20 POINTS!!
This box of macaroni is used in both parts of this question.
Find the volume of this box of macaroni. Be sure to show your work and label all units.

Answer:

[tex]\boxed {\tt 0.481481481 \ g/in^3}[/tex]

Explanation:

Density can be found by dividing the mass by the volume.

[tex]d=\frac{m}{v}[/tex]

The mass is 13 grams. Let's calculate the volume. This is a cube, so the volume formula is:

The volume is 27 cubic inches.

[tex]m= 13 \ g\\v= 27 \ in^3[/tex]

Substitute the values into the formula.

[tex]d=\frac{13 \ g}{27 \ in^3}[/tex]

Divide.

[tex]d=0.481481481 \ g/in^3[/tex]

The density is 0.481481481 grams per cubic inch.

Answer:

Explanation:

When dealing with optics, there is an incident wave, a reflected wave, and a transmitted wave. An incident wave is the initial wave coming out from the source, like a flashlight.

Then the reflected wave is created when the incident wave encounters an interface like a piece of glass. The reflected wave will reflect like you would expect.

Then, the transmitted wave is the wave which passes through the interface and continues.

So, a good question would be to ask for the value of the reflected wave function given an initial incident wave.

Another example entirely would be to look at the reflected wave on a tensioned string. If you shake a string up and down, a wave will be sent through it. Once hitting the wall, the wave will reflect back. A good question there is asking how the amplitude of the wave changed.

A. Na+ : cation

B. NaCl : compound

C. Na : element

D. NaCl + Ag2O → AgCl + Na2O : chemical reaction

Answer:

11

Explanation:

i've been in k12 and i got an a on this anser

a) It will take 24.4 second the planes to reach takeoff speed.

b) The minimum length of the runway must be  744.2 meter.

Acceleration is the rate at which speed and direction of velocity vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates.

Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.

Given parameters:

Acceleration of the plane: a = 2.5 m/s².

Final speed of the plane: v = 61 m/s.

Initial speed of the plane: u = 0 m/s.

Hence,  it will take the planes to reach takeoff speed = final speed/acceleration

= 61 m/s / 2.5 m/s²

= 24.4 second.

The minimum length of the runway must be = (final speed)²/(2×acceleration)

= ( 61)²/(2×2.5) meters

= 744.2 meter.

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Answer:

to go to get a bike

Explanation:

Answer:

a

The point on the x-axis where the magnetic field will be zero is  [tex] d =  2.8 \ cm [/tex]

b

The point on the x-axis where the magnetic field will be zero is [tex]Z =  5.333 \  cm [/tex]Explanation:

From the question we are told that

   The first  current is [tex]I_1 = 5.5 \ A[/tex]

    The point of x- axis  intersection is  [tex]x =  -2.0 \  cm[/tex]

    The second current is  [tex]I_2  =  2.5  \  A[/tex]

     The point of intersection of the x-axis is  [tex]x =  2 .0  \  cm[/tex]

Generally given that the current of the two wires are same direction it means that the magnetic field in -between the wires will cancel out  giving zero

 So  

       [tex]B_1 -  B_2 =  0[/tex]

=>     [tex]B_1  =  B_2 [/tex]

=>      [tex]\frac{\mu_o *  I_1 }{2 *  \pi *  d }  = \frac{\mu_o *  I_2 }{2 *  \pi *  (4 -d) }[/tex]

Here  d is the of one wire to the point where the magnetic field is 0

and  given that the total distance in-between the wire is  D  =  2 =  2 =  4

Hence the distance of the other wire to the point where magnetic field is zero is  (4 - d)

So

     [tex]\frac{5.5}{ d}  =  \frac{2.5}{4-d}[/tex]

=>   [tex] 8d  =  22 [/tex]

=>   [tex] d =  2.8 \ cm [/tex]

So the point on the x-axis where the magnetic field will be zero is  [tex] d =  2.8  [/tex]

 Generally given that the current of the two wires are opposition direction it means that the magnetic field at a position which is not in-between the wire will be zero  

Let that position be  k

Let  the distance from the middle of both wires to k  be Z  

So

      [tex]\frac{\mu_o *  I_1 }{2 *  \pi *  ( 2 +  Z) }  = \frac{\mu_o *  I_2 }{2 *  \pi *  (Z -2) }[/tex]

=>  [tex]5.5 Z  - 11 =  5+ 2.5 Z[/tex]

=>    [tex]3Z  =  16[/tex]

=>    [tex]Z =  5.333\  cm[/tex]

Answer:

are sure this is a question

Answer:

is to meal

Explanation:

plz mark brainlest

Answer:

F = 0 [N]

Explanation:

To solve this problem we must perform a summation of forces in the direction of the vertical axis. Where the positive force is that of the tension of the upward force, while the force exerted by the weight is directed downward with a negative sign.

ΣF = 0

15 - 15 + F = 0

F = 0 [N]

Answer:

Yes it is possible. An object can have a negative acceleration (deceleration) and change its direction. Take for example a car decelerating from 5 m/s to a speed of 1 m/s and then taking a right turn. It changed its direction while still maintaining a negative acceleration.

Answer:

Strength of the charge.

Explanation:

Distance from the charge.

Friction.

Conduction (Direct Contact)

Induction.

18.1 Assessment.

18.1 Assessment.

Net Charge.

Answer:

The correct solution is "33.62 m/s".

Explanation:

The given values are:

Speed

u = 9.8 m/s

Height

s = 52.8 m

As we know,

⇒ [tex]v^2 = u^2 + 2as[/tex]

On putting the estimated values, we get

⇒      [tex]=(9.8)^2+2\times 9.8\times 52.8[/tex]

⇒      [tex]=96.04+1034.88[/tex]    

⇒      [tex]=\sqrt{1130.92}[/tex]

⇒      [tex]=33.62 \ m/s[/tex]

Answer:

the sun is plasma

Explanation:

it is a hot ball of gas made out of oxygen

Answer:

Plasma

Explanation:

All stars are made of gas, however the sun is so hot that most of that gas is plasma

Answer:

five hundred quadrillion

Answer:

there is roughly 7.5 x 10^18 grains of sand, or even seven quintillion grains of sand on earth

Explanation:

Averaging uses estimation to find the answer and is likely close to the answer, but not exact, especially if it's decimals. Calculating gives exact answers, which gives a difference in the two answers or results.

Answer:

Core: the temperature at the very center of the Sun is about 27 million degrees Farenheit (F). The temperature cools down through the radiative and convective layers that make up the Sun's core.

Explanation:

it is about 27 million degrees Fahrenheit

good luck :D

Answer:

uncle

Explanation:why not

Answer:

2.8 [N] at 163° counterclockwise from F1

Explanation:

To solve this problem we must perform a summation of forces on the X & y axes, these summations of forces must be equal to zero.

ΣFx = 0

- F1 + Fx = 0

- 2.7 + Fx = 0

Fx = 2.7 [N]

ΣFy = 0

- Fy + 0.8 = 0

Fy = 0.8 [N]

Now using the Pythagorean theorem we can calculate the magnitude of the force.

F = √(2.7)² + (0.8)²

F = 2.81 [N]

Now we can determine the angle using the tangent of the angle.

tan (α) = F2/F1

α = tan^-1 (0.8/2.7)

α = 16.5°

The force is in the fourth quadrant, so we need to subtract 180° from the calculated angle.

180 - 16.5 = 163.5°

Therefore the force is going to the 2.8 [N] at 163° counterclockwise from F1

Answer:

B = Frictional force

Answer:

The mass of the second weight is approximately 0.477 kg

Explanation:

The given parameters are;

The acceleration experienced by the two weights = 3.8 m/s²

The mass of the first weight = 1.08 kg

The formula for the acceleration, a, of weights attached to a friction pulley, is given as follows;

[tex]a = \dfrac{g \cdot (M - m)}{M + m}[/tex]

Where;

a = The common acceleration of the two weights

g = The acceleration due to gravity = 9.81 m/s²

M = The mass of the first weight = 1.08 kg

m = The mass of the second weight

Therefore, we have;

[tex]m = \dfrac{M\cdot (g -a )}{g + a} = \dfrac{1.08\times (9.81 -3.8 )}{9.81 + 3.8} \approx 0.477[/tex]

The mass of the second weight = m ≈ 0.477 kg

The mass of the second weight ≈ 0.477 kg.

Answer: The Answer is B. It is directed inward, toward the center of a circle.

Explanation:

Answer:

Pressure and force are related, and so you can calculate one if you know the other by using the physics equation, P = F/A. Because pressure is force divided by area, its meter-kilogram-second (MKS) units are newtons per square meter, or N/m2.

observations and collect data

Make Predictions

Gather Data

Analyze the Data

Draw Conclusions

the scientific method include: 1) asking a question about something you observe, 2) doing background research to learn what is already known about the topic, 3) constructing a hypothesis, 4) experimenting to test the hypothesis, 5) analyzing the data from the experiment and drawing conclusions,

The angular momentum remains constant because there is a changing net torque acting on the system that averages to zero over time.

This principle states that If the external torque acting on a system is zero, then the angular momentum of the system is constant.

When the spheres-rod system is thrown straight upward and it rotates counterclockwise, the net torque acting on the system averages to zero over time.

Thus, we can conclude that, the angular momentum remains constant because there is a changing net torque acting on the system that averages to zero over time.

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Work = Force * Distance = 5N * 10m = 50Nm

Hope it helps!

an arrow

Explanation:

momentum is a vector quantity it has both magnitude and direction.

a vector diagram can be used to represent this principle of momentum conservation such as diagram uses an arrow to represent the magnitude and direction of the momentum vector for the individual objects before the collision and combined after the collision

The best representation of momentum vector is ; ( 4 )  An arrow

A momentum is a vector quantity with both magnitude and direction and it  simply represents  a mass ( object ) in motion. momentum is calculated as ;

P = mV .  where m = mass of object , v = velocity of object .

An arrow is a good representation of momentum vector because it has both mass and velocity when fired from bow.

Hence we can conclude that the best representation of momentum vector is an arrow.

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Answer:

See the explanation below

Explanation:

This problem can be better understood graphically, so in the attached image we will use a diagram of a positive displacement air pump.

We can see that when she pushes the plunger, we see that the volume decreases.

Answer:

1. the particle nature of EM radiation, because it shows how frequency is proportional to quanta of energy referred to as photons

2. Planck's constant divided by the photon's wavelength

3. the wave nature of EM radiation

4. particle nature of quanta

Read the chapter next time bozo

Explanation:

The photoelectric effect is good evidence for

Light has two different nature:

Wave nature of light states that light behaves as an electromagnetic wave.

The phenomenon of emission of electrons from the surface of the metal when the light of suitable frequency falls on it.

Thus , we can say that, The photoelectric effect is good evidence for

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