Answer:
An object could be determined as solid:
-It doesn't change shape easily.
-when lots of heat applied till melting point, it would melt or thaw (basically turn into liquid).
-turn to pieces or bent when enough force applied to it.
-the molecules attached with each other by strong forces, creating strong bonds.
An object could be determined as liquid:
-It changes shaped based on the container.
-when lots of heat applied till boiling point, it would vaporize
-the molecules have weak bonds, creating a lot of spaces.
-when heat extracted from the liquid till freezing point, it would freeze/hardened (turn into solid)
An object could be determined as gas:
-it doesn't have any shape or form.
-if fills in the container.
-if lots of heat applied, its molecules are going to move, vibrate,and transist faster; increasing pressure and volume.
-The molecules have very weak bonds, creating spacious space.
-when the heat are being extracted till certain freezing point, it is going to turn into liquid, then solid.
Which set of terms is in the proper order, from left to right, for labeling the
reactants and products in this reaction?
23. Which of the following substances could
be expected to provide the greatest relief
for an acid stomach?
(1) bottled spring water
(2) baking soda in water
(3) lemonade
(4) salt water
(5) strong coffee
Answer:
(2) baking soda in water
Explanation:
The substance could be expected to provide the greatest relief for an acid stomach is baking soda in water. The correct option is (2).
What is baking soda?Baking soda, also known as sodium bicarbonate is a popular ingredient for baking purpose. It helps giving foods like bread, cakes, muffins, and cookies a light and fluffy texture.
When a person has a bloated stomach, he has to take in some soda in anyways to relief.
Soda can be taken as ENO or soda flavored from soda shops.
So, one must take baking soda in water to provide the greatest relief
for an acid stomach
Thus, the correct option is (2).
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challenge
3. A car accelerates at a constant rate from 15 m's to 25 m/s while it
travels a distance of 125 m. How long does it take to achieve the final speed?
Answer:
6.25 second
Explanation:
we know that
s= (u+v)/2*T
125=20t
t=6.25 second
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10. A cyclist travels at 15m/s for 4 minutes. How far does she go?
Answer:
15*4=60
Explanation:
you would multiply
15 PLEASE HELP
Nora rides a bicycle for 5 min on a curvy road
at a constant speed of 10 m/s. Describe Nora's
ride in terms of position, velocity, and
acceleration. Compare the distance she rides
and her displacement.
Answer:
Ok, her position changed over time since the road is curved.
The velocity changed since the direction is changing
AccelerTion: theres a change in velocity since the direction changes
Direction: changed over time
Displacement : difference between 1st and final position
Explanation:
Displacement : difference between 1st and final position
What is Displacement?Displacement is defined as the change in position of an object. It is a vector quantity and has a direction and magnitude.
Ok, her position changed over time since the road is curved.
Accelertion: theres a change in velocity since the direction changes
Nora's ride in terms of position is 10*5*60 = 3000 meter is position
Displacement : difference between 1st and final position.
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A 1000 kg mass car moved in a straight, horizontal motion, with a speed of 20m / s, when it was involved in an accident. It was subjected for 0.1s to an intense force, coming to rest after that time interval, any time. is the mean value of the modulus of this resulting force?
Answer:
average value of the resulting force
Explanation:
The average module value of this resulting force is equivalent to 2.0. 10⁵ N.
The impulse of a force can be calculated by the product of the intensity of the force applied by the time interval in which it is applied -
I = F.Δt
Where,
F = Strength in Newtons
Δt = time interval in seconds
I = Impulse in N.s
The impulse of a force is equivalent to the variation of the amount of movement it causes in the body.
I = ΔQ
The amount of movement is a vector quantity that results from the multiplication of the mass of a body by its speed. Its direction and direction are the same as the velocity vector of the body.
Q = m-V
As the car goes to rest after the application of force, the amount of final movement of the car is equivalent to zero.
I = 0 - mV
F. Δt = - mV
F. 0,1 = - 1000. 20
F = - 20000/0,1
F = 200,000 N
F = 2,0. 10⁵ N
Flashcards should focus on a. Key points c. Both of these b. Bits of information d. None of these Please select the best answer from the choices provided A B C D.
Answer:
c
Explanation:
Define heat capacity of a substance.
Write the S.I unit of heat capacity.
Define heat capacity of a substance:
The heat capacity of a substance can be defined as the amount of heat required to change its temperature by one degree.Write the S.I unit of heat capacity:
Joule per Kelvin[tex] \: \: \: [/tex]
Joule per Celsius[tex] \: \: \: [/tex]
[tex] \: \: \: [/tex]
[tex] \: \: \: [/tex]
[tex] \: \: \: [/tex]
[tex] \: \: \: [/tex]
[tex] \: \: \: [/tex]
[tex] \: \: \: [/tex]
[tex] \: \: \: [/tex]
-,-
Rows on the periodic table are known as
Columns
O Families
O Rows
O Periods
Answer:
periods
Explanation:
The answer is periods i googled it
What are the Fundamental units involved in pressure
Answer:
density and volume
Explanation:
density and volume
Find the uniform acceleration that causes a car's velocity to change from 20.0 m/s to 105 m/s in and 12.0 s
period.
Answer:
7.08 m/s²
Explanation:
Given:
v₀ = 20.0 m/s
v = 105 m/s
t = 12.0 s
Find: a
v = at + v₀
105 m/s = a (12.0 s) + 20.0 m/s
a = 7.08 m/s²
What is the gravitational potential energy of the tennis ball at position A?
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what is the relationship between magnets and emf
Answer:
Movement of a magnet relative to a coil produces emfs as shown. The same emfs are produced if the coil is moved relative to the magnet. The greater the speed, the greater the magnitude of the emf, and the emf is zero when there is no motion.
Hope this helps!
A Ford is traveling with a velocity of 15m/s, east, and is 200 m ahead of a Chevy traveling in the same direction at 20 m/s. How far will the Chevy travel before catching up to the Ford? Edit: nvm lol I found it
Answer:
Distance covered by Chevy before catching up to the Ford = 800 meters
Explanation:
From the graph attached,
A Ford starts with a velocity = 15 meter per second
Therefore, slope of the line representing the relation between the distance and time = [tex]\frac{\triangle s}{\triangle t}[/tex] = Velocity
Let the equation of the blue line,
y = m₁t + b
Where m₁ = slope of the blue line = speed of a Chevy
= 20 meter per second
b = y-intercept
y = 20t + 0 [Since, Chevy starts from the origin, b = 0]
y = 20t
Let quation of the red line,
y = m₂t + b
Where m₂ = Slope of the red line = 15 meter per sec
b = y-intercept = 200 m [Since Ford is 200 meters ahead of Chevy]
y = 15t + 200
Point where these lines will meet or the point where both the cars meet.
20t = 15t + 200
5t = 200
t = 40 seconds
Distance traveled by Chevy in 40 seconds = Velocity × Time
= 20 × 40
= 800 meters per seconds
Calculate the momentum on an object that has a mass of 150 kg and a velocity of 24 m/s no decimal in your answer
Question :-
Calculate the Momentum of an object that has a mass of 150 Kg and a Velocity of 24 m/s .Answer :-
Momentum is 3600 Kg m/s .Explanation :-
As per the provided information in the given question, we have been given that the Mass of the object is 150 Kg . Its Velocity is given as 24 m/s . And, we have been asked to calculate the Momentum of object .
For calculating the Momentum , we will use the Formula :-
[tex] \bigstar \: \: \boxed{ \sf{ \: Momentum \: = \: Mass \: \times \: Velocity \: }} [/tex]
Therefore , by Substituting the given values in the above Formula :-
[tex] \dag \: \: \: \sf { Momentum \: = \: Mass \: \times \: Velocity } [/tex]
[tex] \longmapsto \: \: \sf { Momentum \: = \: 150 \: \times \: 24 } [/tex]
[tex] \longmapsto \: \textbf {\textsf { Momentum \: = \: 3600 \: Kg m/s }} [/tex]
Hence :-
The Momentum of the object is 3600 Kg m/s .[tex] \underline {\rule {180pt} {4pt}} [/tex]
How can an electrical current produce a magnetic field, and how can a magnetic field produce an electrical current?.
Answer:
As Ampere suggested, a magnetic field is produced whenever an electrical charge is in motion. The spinning and orbiting of the nucleus of an atom produces a magnetic field as does electrical current flowing through a wire. The direction of the spin and orbit determine the direction of the magnetic field.
Explanation:
hope this helps
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Please help me with this
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Answer:
A
Explanation:
Car A started at 15 Mph but took 20 seconds to get to 35 Mph. Car B only took 15 seconds to get to 35 Mph even though it started slower.
Answer:
A
Explanation:
Car A had the best initial acceleration by more than 5 mph, while Car B reached the desired speed in 15 seconds, compared to 20 seconds.
Name the three types of musical instruments. How is sound produced in each type?
Answer:
keyboard , guitar and violin
A toy car of mass 2-kg travels along a horizontal surface with negligible friction at a speed of 1.0 m/s. The car then collides with a vertical wall. The wall applies a force of magnitude 20 N for 0.2 s on the toy car. Which of the following predicts the motion of the toy care immediately after the collision?
A: The speed of the car will increase, and the car will travel in the opposite direction.
B: The speed of the car will decrease, and the car will travel in the opposite direction.
C: The speed of the car will remain the same, and the car will travel in the opposite direction.
D: The car will stop and remain motionless.
Please show your work in finding the direction of motion - ie. please don't use common sense but rather show the applicable physics principles along with formulas to find the direction of motion.
Answer:
An experiment is conducted in which a cart travels across a horizontal surface and collides with a wall. Data collected from the experiment are used to create the graph of the cart's velocity as a function of time. All frictional forces are considered to be negligible. Which data from the graph should the student use to determine the direction of the net force exerted on the cart and the direction of the change in momentum of the cart from the time intervals of A to B?
Explanation:
As we know that
Force=dp/dt(Change in momentum/time)So
20N=dp/2dp=10N/sHence the speed of car will remain the same it won't affect the speedAs momentum from wall is more the ball will travel in opposite directionOption C is correct
An object accelerates from rest to 35m/s over distance of 36 m . What acceleration did it experience
Acceleration : 17.01 m/s²
Further explanationLinear motion consists of 2: constant velocity motion with constant velocity and uniformly accelerated motion with constant acceleration
• An equation of uniformly accelerated motion
vf = vo + at
vf² = vo² + 2a (x-xo)
x = distance on t
vo / vi = initial speed
vt / vf = speed on t / final speed
a = acceleration
[tex]\tt vf^2=vo^2+2ax\rightarrow vo=0\rightarrow rest\\\\35^2=0^2+2.a.36\\\\1225=72.a\\\\x=17.01~m/s^2[/tex]
Resistor 1 has twice the resistance of resistor 2. They are connected in parallel to a battery. The ratio of the thermal energy dissipation by 1 to that by 2 is:
The ratio of the thermal energy dissipation by resistor 1 to that by resistor 2 will be 1 : 2
The Resistance of a ResistorResistors can be arranged in series or parallel
The resistors arranged in parallel will have the same potential difference across each every one of them.
Given that Resistor 1 has twice the resistance of resistor 2. They are connected in parallel to a battery. That is
[tex]R_{1}[/tex] = 2[tex]R_{2}[/tex]
Power P = lV
from Ohm's law
V = lR
Make l the subject of formula
l = V/R
Substitute l into power formula
P = [tex]V^{2}[/tex] / R
For the Resistor 1,
P = [tex]V^{2}[/tex] / 2[tex]R_{2}[/tex]
For the Resistor 2
P = [tex]V^{2}[/tex] / [tex]R_{2}[/tex]
The ratio of the thermal energy dissipation by 1 to that by 2 will be
[tex]V^{2}[/tex]/2[tex]R_{2}[/tex] x [tex]R_{2}[/tex]/[tex]V^{2}[/tex]
The [tex]V^{2}[/tex] and the [tex]R_{2}[/tex] will cancel out.
Therefore, the ratio of the thermal energy dissipation by 1 to that by 2 will be 1:2
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How many energy levels do elements in Period 6 have?
Answer:
food
Explanation:
A sound wave is produced when a medium begins to.
Explanation:
Sound is produced when an object vibrates, creating a pressure wave. This pressure wave causes particles in the surrounding medium (air, water, or solid) to have vibrational motion. As the particles vibrate, they move nearby particles, transmitting the sound further through the medium.
I hope you understand...
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Answer:
vibarate
Explanation:
What is the relationship between amplitude and frequency of a wave?.
Answer:
The relationship between the wave's amplitude and frequency is such that it is inversely proportional to the frequency. The amplitude decreases as the frequency increases. The amplitude increases as the frequency decreases. The higher the energy of a wave, the higher the amplitude. The lower the energy, the lower the amplitude. Energy has no effect on wavelength, speed, or frequency, only the amplitude.
Explanation:
john and caraline go out for a drive one day. this graph reprresents the distance they travlled over time during what part of time are they not moving.
Explanation:
where is the graph mate ??????
Answer:
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Explanation:
jjjkkk
john and caraline go out for a drive one day. this graph reprresents the distance they travlled over time during what part of time are they not moving.
A force that resists two objects rubbing together is called _____.
OA) heat
OB) friction
OC) kinetic energy
OD) potential energy
Answer:
B
Explanation:
Friction is the force used to prevent 2 objects from rubbing against each other. This would mean if you rubbed your hands together you would feel the heat from the force of friction against the 2 objects namely your hands. Some things mitigate friction like water and soap. Water commonly used in waterslides reduces friction since the properties of water reduces the friction so much that you would be able to slide smoothly. This happens since wet object don't makes hard surfaces smooth. Soap does the same thing since the two objects are more slippery and can seem to get a grip on each other for friction. I hope this helps with your question thanks you and cya!
One of two lorries is half the weight of the other, but is moving at twice the speed of the other. Which of the lorries has more kinetic energy?
Need urgently help and please someone offer to help me with this exercise.. Thank you ^-^
Answer:
1 /2 (W / g) V^2 = KE1
1/2 *(W / 2) / g * (2V}^2 = KE2 = 1/2 (W / 2 ) g * 4 V^2
KE2 / KE1 = 2
The lorry traveling at twice the speed has twice the KE
4 times energy due to speed but 1/2 the mass
Lorry 2 has more kinetic energy than Lorry 1.
To compare the kinetic energy of the two lorries, we use the formula for kinetic energy:
Kinetic Energy (KE) = 1/2 * mass * [tex]velocity^2[/tex]
Let's assume the following:
Lorry 1 (L1) has a mass of M kg and a velocity of V m/s.
Lorry 2 (L2) has a mass of half of L1's mass, so its mass is (1/2)M kg, and it has a velocity of 2V m/s.
Now, let's calculate the kinetic energy for each lorry:
For Lorry 1 (L1):
KE1 = 1/2 * M * [tex]V^{2}[/tex]
For Lorry 2 (L2):
KE2 = 1/2 * (1/2)M * [tex](2V)^2 = 1/2 * (1/2)M * 4V^2 = 2 * (1/2 * M * V^2) = 2 * KE1[/tex]
From the calculations, we can see that the kinetic energy of Lorry 2 (KE2) is double the kinetic energy of Lorry 1 (KE1).
So, even though Lorry 2 is moving at twice the speed of Lorry 1, its kinetic energy is higher because it also has half the weight (mass) of Lorry 1. The increased speed of Lorry 2 contributes more to its kinetic energy than the decrease in mass.
Therefore, Lorry 2 has more kinetic energy than Lorry 1.
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What is the relationship of gas pressure to it temperature?
Explanation:
By Gay-Lussac's law
Pressure is directly proportional to its temperature at given volume.
When the temperature of a system goes up, the pressure also goes up, and vice versa.
Answer:
So, as pressure increases, temperature will increase as well or vice- versa
Explanation:
The Ideal Gas Equation is PV = nRT, where :-
P = Pressure
V = Volume
n = number of moles
R = Molar Gas Constant
T = Temperature
In this, P ∝ T
=> So, as pressure increases, temperature will increase as well or vice- versa
Love, which can’t be observed or measured directly, is an example of a psychological construct.
Please select the best answer from the choices provided
T
F
why does heat flows from hot body to cold body?
Answer:
The atoms in the hot bodies have higher kinetic energy than those of the cold bodies. Thus to maintain thermal equilibrium, the atoms of higher kinetic energy tries to move and collide with the atoms of low kinetic energy. Thus heat transfers from a hot body to a cold body.
Explanation:
Explanation:The atoms in the hot bodies have higher kinetic energy than those of the cold bodies. Thus to maintain thermaler kinetic energy tries to move and collide with the atoms of low kinetic energy. Thus heat transfers from a hot body to a cold body.