What is conductivity in relation to resistivity?

Answers

Answer 1

conductivity and resistivity are two closely related properties that describe how materials conduct electricity. Conductivity and resistivity are two properties of materials that describe how they behave in response to an electric field.

Resistivity is the inverse of conductivity, and it is defined as the resistance of a material of unit length and unit cross-sectional area. In other words, resistivity is a measure of the intrinsic property of a material to oppose the flow of electric current. It depends on the type and amount of impurities in the material, its crystal structure, temperature, and other factors. Resistivity is commonly measured in ohm-meters.

Conductivity, on the other hand, is a measure of the ease with which a material can conduct electric current. It is the reciprocal of resistivity and is expressed in units of Siemens per meter (S/m). The higher the conductivity of a material, the easier it is for electric current to flow through it. Conductivity depends on the same factors as resistivity, but in the opposite way.

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Related Questions

A construction worker pushes a 25 kg load in a wheelbarrow for a distance of 5.0 m, using a horizontal force of 50.0 N. How much work is done by the worker on the wheelbarrow?
Group of answer choices

a. 55 J

b. 250 J

c. 1250 J

d. 10 J

Answers

B. The amount of work done by the worker on the wheelbarrow is 250 J.

Work done by the worker

The amount of work done by the worker on the wheelbarrow is calculated as follows;

W = Fd

where;

F is applied forced is displacement

W = 50 x 5

W = 250 J

Thus, the amount of work done by the worker on the wheelbarrow is 250 J.

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In a given neuron, the current membrane potential is 60 mv. what does this tell you about the current potential compared to the resting membrane potential of 70 mv?

Answers

The membrane is depolarized compared to the resting membrane potential.

Through conformational changes from closed, nonconducting states to an open, current-conducting state, membrane depolarization activates sodium channels. Na+ channels open slowly and change from an open state to a nonconducting, rapidly inactivated state as a result of delayed openings, which contribute to the declining fraction of INa induced by prolonged depolarization. Additionally, sodium channels can move swiftly from the closed state to the fast-inactivated state. When the membrane is depolarized, inactivated channels are prevented from opening.

The distribution of channels between the closed and slow-inactivated states, however, limits the number of excitable sodium channels as a function of the membrane potential since slow inactivation acts at greater negative potentials than fast inactivation.

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A 60 g golf ball is dropped from a level of 2 m high. It rebounds to 1.5 m. How much energy is lost? Group of answer choices 0.5 J 0.88 J 0.29 J 1 J

Answers

Answer: A 60 g golf ball is dropped from a level of 2 m high. It rebounds to 1.5 m. Energy loss will be 0.29J

Explanation: To find the correct answer, we have to know more about the Gravitational potential energy.

What is gravitational potential energy?The energy possessed by a body by virtue of its position in gravitational field of earth is called gravitational potential energy.The gravitational potential energy of a body at a height h with respect to the height h will be,

                                          [tex]U=mgh[/tex]

Expression for gravitational potential energy loss will be,

                                        [tex]E=U_i-U_f[/tex]

How to solve the problem?The total energy before the ball dropped will be,

                 [tex]U_i=mgh_i=60*10^-3kg*9.8m/s^2*2m=1.176 J[/tex]

The total energy after when the ball rebounds to 1.5m will be,

                 [tex]U_f=mgh_f=60*10^-3kg*9.8m/s^2*1.5m=0.882J[/tex]

The total energy loss will be,

                [tex]E=1.176-0.882=0.294J[/tex]

Thus, we can conclude that, the energy loss will be,0.294J.

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A military surveillance satellite is in circular orbit around the Earth at an altitude of 1,000 km above the surface. If the Earth's mass is 5.97 x 1024 kg and its radius is 6,370 km, what is the satellite's orbital speed in m/s

Answers

The orbital speed of the satellite is 7.35*10^3 m/s.

What is orbital speed?

The speed of the satellite in its orbit is termed the orbital speed.

The orbital speed is given by the formula,

[tex]v=\sqrt{\frac{GM}{r}}[/tex]

where G is the universal gravitational constant, M is the mass of the planet and r is the distance of the satellite from the center of the planet.

Here the distance of the satellite from the center of the planet is the sum of the planet's radius and the height attained by the satellite above the ground. So

r=6370 + 1000

r=7370 km

Given the mass of the planet is 5.97*10^24 kg and the value of the gravitational constant is 6.67*10^(-11) N m^2 kg^(-2), substitute these values in the formula of the orbital speed.

Note: 1 km=1000 m

[tex]v=\sqrt{\frac{6.67\times10^{-11}\text{ N m}^2\text{kg}^{-2}\times5.97\times10^{24} \text{ kg}}{7370 \text{ km}}} \\ v=\sqrt{\frac{6.67\times10^{-11}\text{ N m}^2\text{kg}^{-2}\times5.97\times10^{24} \text{ kg}}{7370\times 1000 \text{ m}}} \\ v= 7.35\times 10^3 \text{ m/s}[/tex]

Hence the orbital velocity of the satellite is 7.35*10^3 m/s.

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At a point in space an electric force acts vertically upward on an electrion, the directon of the electric field at that point is:____

Answers

Answer:

F = Q E      force acting on charge Q due to field E

A positive electric field is directed from positive to negative.

An electron will be attracted to the positive terminal.

Thus if the electric force is upwards the direction of the field must be directed downwards, or

if F is positive and Q is negative E must also be negative or downwards.

(taking upwards as positive)

A vehicle that weights 400 n on the surface of the earth is traveling in outer space at a speed of 400 m/s. It can be stopped by applying a constant force of 20 n for:_____.

Answers

A vehicle that weights 400 n on the surface of the earth is traveling in outer space at a speed of 400 m/s. It can be stopped by applying a constant force of 20 n for 800 secs.

Newtons 3 law whilst one object exerts pressure on any other object, the second object exerts a force on the first item this is identical in significance, but opposite in course; for each movement, there is an identical, but opposite response; referred to as the law of action-reaction.

You can use the equal formulation d = rt because of this distance equals the price instance's time. To solve for speed or rate use the components for pace, s = d/t this means that pace equals distance divided by way of time. To clear up for time use the components for time, t = d/s this means that time equals distance divided by way of velocity.

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Consider a pipe of length l that is open at both ends. What are the wavelengths of the three lowest-pitch tones produced by this pipe?.

Answers

The correct option  is D.

The three lowest-pitch tones generated by this pipe have wavelengths of = 2 L, L, 2 L/3

What is meant by wavelength?

Measuring a wave's size from one peak to the next is all that is required. The wavelength is only the separation between the crests of the successive waves, if one thinks of a sound wave as being similar to a water wave.

According to the given Information:

The length of a pipe with an opening at either end and a length l is given by:

[tex]l=\frac{n \lambda}{2}[/tex]

or

[tex]\lambda=\frac{2 l}{n}[/tex]

Initial pitch tone: n = 1.

[tex]\lambda_{1}=2 l[/tex]

The first pitch tone has n = 2

[tex]\begin{aligned}\lambda_{2} &=\frac{2 l}{2} \\\lambda_{2} &=l\end{aligned}[/tex]

The initial pitch tone has n = 3.

[tex]\begin{aligned}&\lambda_{3}=\frac{2 l}{3} \\&\lambda_{3}=\frac{2 l}{3}\end{aligned}[/tex]

The three lowest-pitch tones generated by this pipe have wavelengths of 2 L, L, and 2 L/3, respectively.

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I understand that the question you are looking for is :

Consider a pipe of length L that is open at both ends. What are the wavelengths of the three lowest-pitch tones produced by this pipe?

Answer

A. 2L, L, L/2

B. 2L, L, L/2

C. 4L, 2L, L

D. 2L, L, 2L/3

E. 4L, 4L/3, 4L/5

d. e. Study the given diagram and calculate the following: i. work done by load ii. work done by effort iii. M.A iv. V.R v. efficiency [Friction is neglected] ​

Answers

i. The work done by the load is load x distance moved by load.

ii. The work done by effort is effort applied x distance moved by effort.

iii. The mechanical advantage of the simple machine is Load/effort.

iv. The velocity ratio of the simple machine is 2.

v. The efficiency of the machine is M.A/V.R x 100%.

Work done by the load

The work done by the load is the product of the load and the distance through which the load is moved. The magnitude is calculated as follows;

Work done by the load = load x distance moved by load

Work done by effort

The work done by the effort is the product of the effort and the distance through which the effort is applied. The magnitude is calculated as follows;

Work done by effort = effort applied x distance moved by effort

Mechanical advantage of the simple machine

M.A = Load/Effort

Velocity ratio of the simple machine

V.R = distance moved by effort / distance moved by load

V.R  = 30 cm/15 cm

V.R = 2

Efficiency of the machine

E = (M.A/V.R) x 100%

Thus, the work done by the load is load x distance moved by load.

The work done by effort is effort applied x distance moved by effort.

The mechanical advantage of the simple machine is Load/effort.

The velocity ratio of the simple machine is 2.

The efficiency of the machine is M.A/V.R x 100%.

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Find the minor measurement of the vernier scale by taking 49, 1mm divisions of the main scale and dividing it into 50 vernier divisions.​

Answers

♨ANSWER♥

length of V-50 = 49mm

length of V-1 = 49/50mm

= 0.98mm

so,

minor measurement = (M-1) - (V-1)

= 1mm -0.98mm

= 0.02mm

☆ Therefore,

The minor measurement of the vernier scale is 0.02mm.

...hope this helps...

_♡_mashi_♡_

Which of these can happen to energy in a system? Select all that apply.

Group of answer choices

a. It can be converted.

b. It can remain constant.

c. It can be destroyed.

d. It can be created.

Answers

A. What can happen to energy in a system is that it can be converted.

What is the principle of conservation of energy?

The principle of conservation of energy states that energy can neither be created nor destroyed but can be converted from one form to another.

The energy of a system can be converted from one form to another.

Thus, what can happen to energy in a system is that it can be converted.

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Two forces of magnitude 10n and 20n acting at an angle of 30 degree. what will be the x component of their resultant force?

Answers

The resultant of the forces is 29 N. Option D

What is the resultant force?

The resultant force is the force that acts in a given direction. Now we have two forces as enumerated in the question.

Thus;

Resultant = √(10)^2 + (20)^2 - [2 * 10 * 20 * cos (60 - 30))

Resultant = 29 N

Thus, the resultant of the forces is 29 N.

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Missing parts;

Two forces of magnitude 10N and 20N act on a body in directions making angles 30° and 60° respectively with x-axis what is the resultant force

A.17N

B. 19N

C. 23N

D. 29N

E. 37N​

The measure of arc ed is 68°. what is the measure of angle efd? 34° 68° 112° 132°

Answers

The measure of the angle EFD = 34°. That is option A.

Calculation of an angle of an intercepted arc

The radii of the given circle are CE and CD.

The measure of the given angle of the arc is = 68°

But the central angle of an intercepted arc measure the double of the inscribed angle by the same arc.

Therefore, the measure of angle of an intercepted arc is 68/2 = 34°

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Answer:

34

Explanation:

edge 2023

an interplantetary speedcarft moving at 20000m/s.how far will it travell in one day?(give your answer in km)

Answers

Explanation:

Step I: 1 day means 24 hours * 60 minutes * 60 seconds.

So 1 day have 86400 seconds.

Step I:

Now,

To calculate the travel distance 20,000m/s* 84600 is 1728000000m

Step Ill:

Now convert the meter in kilometer

Because 1 km = 1000 m

So, = 1728000000/1000 = 172800OKm

A 1500 pound car is stopped in traffic on a hill that is at an incline of 10. Determine the force that is required to keep the car from rolling down the hill.

Answers

A 1500 pound car is stopped in traffic on a hill that is at an incline of 10. The force that is required to keep the car from rolling down the hill will be 1133.53 N.

When all the forces that act upon an object are balanced, then the object is said to be in equilibrium motion. The forces are considered to be balanced if the rightward forces are balanced by the leftward forces and the upward forces are balanced by the downward forces.

It can be observed from the diagram that in order resist the car to rolling down the hill we need to apply an equal and opposite force against the inclined force( that is mgsin(x)) to form an equilibrium position because rolling is associated with horizontal forces hence we need to apply force against the force which can drive down the car .

mass = 1500 pound = 680.39 kg

sin(10) = 0.17

F (counter force ) = m*g*sin(x)

                             = 680.39  * 9.8 * 0.17

                             = 1133.53 N

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If you will be rinsing your regulator after removing it from the cylinder, you must make sure that the ______ ______ is firmly in place. Select one: Mouthpiece plug Alternate-air-source retainer Dust cap None of the above

Answers

If you will be rinsing your regulator after removing it from the cylinder, you must make sure that the dust cap is firmly in place.

What is Dust cap?

A dust cap is a gently curved dome mounted either in concave or convex orientation over the central hole of most loudspeaker diaphragms.

Thus, if you will be rinsing your regulator after removing it from the cylinder, you must make sure that the dust cap is firmly in place.

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a bat emitts a sonar sound wave (343 m/s) that bounces off a mosquito 8.42 m away

Answers

The time lapse between when the bat emits the sound and when it hears the echo is 0.05 s.

From the question given above, the following data were obtained:

Velocity of sound (v) = 343 m/s

Distance (x) = 8.42 m

Time (t) =?

We can obtain obtained the time as illustrated below:

v = 2x / t

343 = 2 × 8.42 / t

343 = 16.84 / t

Cross multiply

343 ×  t = 16.84

Divide both side by 343

t = 16.84/343

t = 0.05 s

Thus, the time between  when the bat emits the sound and when it hears the echo is 0.05 s.

How does a bat know how far away something is?

A bat emits a sound wave and carefully listens to the echoes that return to it. The returning information is processed by the bat's brain in the same way that we processed our shouting sound with a stopwatch and calculator. The bat's brain determines the distance of an object by measuring how long it takes for a noise to return.

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Correction question:

A bat emits a sonar sound wave (343 m/s) that bounces off a mosquito 8.42 m away. How much time elapses between when the bat emits the sound and when it hears the echo? (Unit = s)

. A coil is wrapped with 400 turns of wire on the perimeter of a circular frame of radius 8.5cm. Each turn has the same area, equal to that of the frame. A uniform magnetic field is turned on perpendicular to the plane of the coil. This field changes at a constant rate from 10.0 to 80.0mT in a time of 20.0ms. What is the magnitude of the induced emf in the coil at the instant the magnetic field has a magnitude of 50.0mT

Answers

The emf in the coil when the magnetic field is 50.0 mT is 31.78 V.

What is emf?

According to Faraday's law of electromagnetism, the emf of a coil  

is the negative of the rate of change of magnetic flux with respect to time.

The emf of a coil is given by the formula,

[tex]E=-\frac{d\phi}{dt}[/tex]

where E is the emf, dΦ is the change in flux and dt is the change in time.

Magnetic flux: The scalar product of the magnetic field B and the total area vector A perpendicular to it is called the magnetic flux. The magnetic flux for a circular coil with n number of turns is given by,

[tex]\phi=n\pi r^2B[/tex]

where r is the radius of the coil.

Substitute [tex]\phi=n\pi r^2B[/tex] in the above equation and solve it.

[tex]E=-\frac{d(n\pi r^2 B)}{dt}\\E=-n\pi r^2 \frac{dB}{dt}[/tex]

Where dB/dt is the rate of change in the magnetic field with respect to time.

Note: 1mT/ms= 1 T/s, 1 cm= 0.01 m and 1mT=0.001 T

Given the magnetic field changes from 10.0mT to 80.0mT, the change in magnetic field dB = 80-10=70mT. The time interval dt= 20.0ms. Therefore,

dB/dt = 70/ 20 =3.5mT/(ms)

dB/dt = 3.5 T/s

Substitute dB/dt= 3.5T/s,  n=400, r=8.5 cm or r=0.085 m in the formula of E and solve it. Since the value of magnitude is positive, ignore the negative sign.

E=400*π*(0.085)^2*(3.5)

E=31.78 V

Since the rate of change of magnetic field is constant, so the magnitude of the emf of the coil will remain the same at all instants. Hence E=31.75 V when the magnitude of the magnetic field is 50.0 T

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For vibrational motion, what term denotes the maximum displacement from the equilibrium position?.

Answers

For vibrational motion, the amplitude denotes the maximum displacement from the equilibrium position.

What is vibrational motion?

The motion in which there are some vibrations about the fixed position called mean position is termed vibrational motion. For example, the motion of a wave on the string has perpendicular vibration.

What is amplitude?

The amplitude is defined as the maximum displacement of the vibration from its mean position. For vibrational motion, the mean position is the equilibrium position. So amplitude is the term that denotes the maximum displacement from the equilibrium position. For example, the displacement of the string wave from its equilibrium position is the amplitude of the string wave.

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A sky-diver jumps from a stationary balloon. His initial downwards acceleration is 10m/s².

Fig. 1.1 shows the directions of the air resistance and the weight of the sky-diver.

The mass of the sky-diver is 60 kg and his weight is 600 N.

(a) Explain, using ideas about the forces, why his initial downwards acceleration is 10m/s².​

Answers

Explanation:

a. The force acting down is gravity, on Earth gravity is 10 m/s^2. When the skydiver jump, the acceleration will start out as -10 m/s^2, but it will eventually equals the air resistance , which is called terminal velocity.

A 540 gram object is attached to a vertical spring, causing the spring’s length to change from 70 cm to 110 cm.

What is the change in the object’s gravitational potential energy?

Group of answer choices

-2.1 J

-0.84 J

2.1 J

0.84 J

Answers

The change in the object’s gravitational potential energy is 2.11 J.

Change in the object's gravitational potential

ΔP.E = mg(hf - hi)

where;

m is mass of the objecthf is final height hi is initial height

ΔP.E = 0.54 x 9.8(1.1 - 0.7)

ΔP.E = 2.11 J

Thus, the change in the object’s gravitational potential energy is 2.11 J.

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Draw a vector representing the direction of the electric field. The orientation of the vector will be graded. The location and length of the vector will not be graded.

Answers

1. E is a vector pointing to the right.

2. E is a vector pointing to the left.

3. E is a vector pointing to the right.

4. E is a vector pointing to the left

What is a Vector ?

A vector is an object that has both a magnitude and a direction

Geometrically, we can picture a vector as a directed line segment, whose length is the magnitude of the vector and with an arrow indicating the direction. The direction of the vector is from its tail to its head.Examples of vectors in nature are velocity, momentum, force, electromagnetic fields, and weight.

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A 5 cm radius conducting sphere has a charge density of 2.0x10-6 C/m2 on its surface. Find the electric potential of the sphere.

Answers

noob anyways I can't get u vape because first reason I lost ur money and second I felt bad for losing ur and I will not on yourself as I am thinking of a number my number is a multiple of 6.What other numbers must my number is a multiple of 6.What other numbers

Why is it so much easier to determine the length of the day on mars than on venus?

Answers

The thick cloud cover of Venus makes it difficulty in visibility  because of impenetrable in visible light which has made it tough for astronomers to measure the length of the planet's day . Whereas Mars have clear atmosphere which do not hinder visibility

The most important reason of why is it difficult to measure the length of the day on Venus is tougher than in mars is that Mars' atmosphere is generally clear because of which their is no visibility issue on mars but due to the thick cloud covering of Venus makes it impenetrable in visible light , due which visibility is not that clear  and it become tough to observe the length of the day on Venus.

Mars is much larger than Venus in size which makes easier to observe

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____________ is the unit that measures the pressure or force that pushes the flow of electrons forward through a conductor.

Answers

Volt is the unit that measures the pressure or force that pushes the flow of electrons forward through a conductor.

When there is a circuit having a cell / battery , that cell/battery forms an electric field due to difference in voltages , and set a voltage of value equals to the difference in the voltage of two end of that cell/ battery . Because of which a electric field got set up in the conductor , which pushes electron to move inside the conductor . Unit of voltage is volt .

VOLT - A unit of electrical pressure (or electromotive force) which causes current to flow in a circuit. One volt is the amount of pressure required to cause one ampere of current to flow against one ohm of resistance. VOLTAGE - That force which is generated to cause current to flow in an electrical circuit.

Voltage is the pressure from an electrical circuit's power source that pushes charged electrons (current) through a conducting loop, enabling them to do work such as illuminating a light. In brief, voltage = pressure, and it is measured in volts (V).

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Voltage is the unit that measures the pressure or force that pushes the flow of electrons forward through a conductor.

Voltage is the electrical potential, potential difference and electromotive force in meter , kilogram, second system.The standard unit of measurement used for the expression of voltage is volt which is represent by symbol "V".

High voltage cable is used for electric power transmission at high voltage.A cable that includes conductor and insulation. cable which are considered to be fully interested. That means that they have fully rated insulted system that will consist of insulation , semi-con layers.

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The galaxy M33 is the third largest galaxy in the Local Group after M31 and the Milky Way. The galaxy M33 has a moderate-sized central bulge and two spiral arms that emerge directly out of the bulge and wrap around in rather poorly defined arcs with many cross-connections between the arms. Thus, M33 is classified as a _____ normal spiral.

Answers

Galaxy M33 is classified as a Triangulum normal spiral.

The galaxy M33 is the third largest galaxy in the Local Group after M31 and the Milky Way. The galaxy M33 has a moderate-sized central bulge and two spiral arms that emerge directly out of the bulge and wrap around in rather poorly defined arcs with many cross-connections between the arms.

This spiral galaxy is located in the triangle shaped constellation earning a pet name as triangular galaxy. This galaxy star formation rate is ten times higher than average found in Andromeda galaxy.  It has relatively bright apparent. This galaxy was given by Charles Messier and he classified it as Triangulum normal spiral.

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If a car increases its velocity from +6 m/s to +30 m/s in 6 seconds, its acceleration in m/s2 is__________.

Answers

Answer:

4m/s^2

Explanation:

v = 30m/s, u = 6m/s, t = 6s

Change in velocity = v(final velocity) - u (initial velocity)

v-u = 30-6 = 24m/s

acceleration = (v-u)/t

(24m/s)/6s = 4m/s^2

A 150 g piece of metal has a specific heat capacity of 0.845 J/g°C. If it takes 3.30x 103 J to heat the metal to 120°C, the initial temperature of the metal was

Answers

The initial temperature of the metal was 94.24⁰C.

Initial temperature of the metal

The initial temperature of the metal is calculated as follows;

Q = mcΔθ

where;

Δθ is change in temperature

Δθ = Q/mc

Δθ = (3,300) / (0.854 x 150)

Δθ = 25.76⁰C

Δθ = T₂ - T₁

T₁ = T₂ - Δθ

T₁ = 120 - 25.76

T₁ = 94.24⁰C

Thus, the initial temperature of the metal was 94.24⁰C.

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6 latter word and it has a s and a I and it has mass (9.______________liquids, and gases all have mass.)

Answers

Answer:

Solids

Explanation:

Solids, liquids, and gases all have mass.

An airplane is flying on a bearing of 170° at 495 mph. Find the component form of the velocity of the airplane. Be sure to show and explain your work.

Answers

The horizontal component of the plane's velocity is 85.96 mph and the vertical component of the plane's velocity is 487.5 mph.

Component form of the velocity of the airplane

The component form of the velocity of the airplane includes both horizontal and vertical velocity and it is calculated as follows;

Vx = V cosθ

Vy = V sinθ

where;

Vx is horizontal component of the velocityVy is vertical component of the velocityθ is the angle of the velocity measured with respect to horizontal axis

θ = 170 - 90 = 80⁰

Horizontal component of the velocity

Vx = 495 mph (cos 80)

Vx = 85.96 mph

Vertical component of the velocity

Vy = 495 mph (sin 80)

Vy = 487.5 mph

Thus, the horizontal component of the plane's velocity is 85.96 mph and the vertical component of the plane's velocity is 487.5 mph.

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A bungee jumper jumps from a bridge and starts accelerating towards a lake below. What energy transfer is he experiencing?

Group of answer choices

a. Elastic potential to kinetic

b. Kinetic to elastic potential

c. Kinetic to gravitational potential

d. Gravitational potential to kinetic

Answers

D. The energy transfer he is experiencing is Gravitational potential to kinetic.

Energy transferred experienced by the bungee jumper

The bungee jumper possesses gravitational potential energy due to his position above the ground level (on a bridge).

As he starts accelerating towards a lake below, his gravitational potential energy will be converted into kinetic energy.

Thus, the energy transfer he is experiencing is Gravitational potential to kinetic.

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Other Questions
Consider the following. f(x) = x x - 7, a = 8 Verify that f has an inverse function. Ofis one-to-one O the domain of fis all real numbers O fhas exactly one minimum O the range of fis all real numbers O fhas exactly one maximum Then use the function f and the given real number a to find (t-1)(a). (Hint: Use Theorem 5.9.) (-1)(a) = an employee has total gross wages of $7,000, federal unemployment expense, and state unemployment expense. what is the correct journal entry for the employers payroll taxes and other expenses? an access point that is unauthorized and allows an attacker to bypass network security configurations is considered to be what type of access point? Select the matrix that represents the parallelogram A sound wave travels 990-m in exactly 3 seconds. What is the speed of the sound wave in meters persecond Describe the pattern in each table write your answers on the line. what is the primary entry point into the body for true pathogenic fungi? what is the usual outcome of exposure to these fungi in the human host ? it contends that the modernization of the underdeveloped countries will happen once they abandon the association of conjugal family system with progress and economic development. true or false? determine the number of electron groups around the central atom for each of the following molecules. part a ch2cl2 a particle of mass m follows the spacetime trajectory x() = (a, b , c cos , c sin ,), where is its proper time. (a) What is its 4-velocity u(tau)? (b) What is the physical meaning of A? Explain why A is not independent of the other constants, and show that A = (c^2 + B^2 + omega^2 C^2)^1/2. (c) Describe the motion of the particle, as seen by an observer at rest in the frame in which the trajectory is given. What is the physical meaning of B and C? (d) What oscillation frequency (in cycles/sec) does this observer see? Find the surface area of the part of the plane z=4+6x+5y that lies inside the cylinder x2+y2=16 The population of wild horses in a particular country t years after the year 2000 can be modeled by the function h(t)=45, 495 (0. 89)t. By approximately what percent is the population decreasing each year? Which type of authentication would require a user fingerprint or facial recognition for a user to get past the screen lock on a mobile device and gain access to the device? Which of the following is NOT a type of permanent insurance? A. Whole life. B. Straight life. C. Ordinary life. D. Term life. E. Cash value life. a 500-w heater carries a current of 4.0 a. how much does it cost to operate the heater for 30 min if electrical energy costs 6.0 cents per kwh? T/F : the mental disorder most closely associated with violent and serious offenses is schizophrenia. Freud proclaimed that the mission of psychoanalysis is toa. Enhance self-actualizationb. Learn new behaviorsc. Strengthen the egod. Define and strengthen goals A. Given the values of Hrxn, Srxn, and T below, determine Suniv.Part 1Hrxn= 84 kJ , Srxn= 144 J/K , T= 303 KExpress your answer using two significant figures. the central atom in ________ violates the octet rule. sf2 br2co sh2 o2 krf2 which of the following defines code? a set of instructions, written by a programmer, that is used by computers to perform tasks data that a program expects to be supplied a procedure that returns a value as a result data that is passed to a parameter in a program