PHYSICS MIDDLE SCHOOL

A kitten has a mass of 0.8 kg. It is moving forward with a momentum of 0.5 kg • m/s. What is the kitten’s velocity?

Answers

Answer 1

Answer:

The kitten's velocity is V=0.625 m/s

Explanation:

Solving the problem,

Given

Mass=0.8 kg

Momentum=0.5 kg.m/s

Velocity=?

We have the formula,

P=M*V

V=P/M

V=0.5 kg.m/s/0.8 kg

V=0.625 m/s

The kitten's velocity is V=0.625 m/s

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What does it mean to say that the forces acting on an object are balanced?

Answers

Answer:

that would be for force and motion and it would be newtons laws and that would be like inertia

Explanation:

it would be the law of inertia: every action has a equal ad opposite reaction.

hope this helps :)

Answer:

If these are your answer choices:

A. The sum of the horizontal forces is zero.

B. All the forces combine to give zero net force.

C. The forces occur as pairs of forces with equal magnitude and direction.

D. The forces all have the same magnitude.

The correct answer is B. All the forces combine to give zero net force.

How is Ohm's Law related to house fires?

Answers

I got my bachelor's degree in Electrical Engineering in 1973, and
I have worked with electricity and electronics during the 43 years
since then. Maybe I'm missing something obvious, but I can't think
of any connection between Ohm's Law and house fires. I'm really sorry.

This experiment is to see if water flows faster out of a smaller can or a larger can. You will need:

• two cans (one quite small like a soup can and the other large, like a juice, can.)

Follow these steps:

A. Remove the top of each can. Punch a hole in the side of each can, very close to the bottom, making sure the holes are equal in size. Cover each hole with a piece of tape, and place the cans next to the sink.
B. Put water in both cans, making sure the water is at the same level - different amounts, but the same level. Turn the cans so the holes are facing into the sink, and remove the tape at the same time. Answer these questions: Do the streams of water shoot out at the same distance? Why or why not?
C. Try the same experiment, but this time put one cup of water in each can. What happens to the streams of water now?
D. Try the same experiment, but this time fill both cans to the top. What happens to the streams of water?

ANSWER A B C AND D CORRECTLY!!!

Answers

the water flows faster out of a smaller can than it does a larger can.

Answer:

A&B: The stem of the water does not shoot out the same distance because one can have less water and the other can have more water and the can with less water have more pressure that making the can shoot out further than the can with more water.

C: Less water will come out of the two cans because they are compressed together so all of the water is trying to come out all at the same time.

D:All of the water in the can started coming out all in one small stream.

Explanation:

You travel 25 meters east and then travel 48 meters south. What is your total displacement

Answers

Answer:

54.1 m at $-62.5^(\circ)$ (south of east)

Explanation:

Displacement is a vector connecting the initial position with the final position of motion.

In this problem, the motion consists of two parts:

- A first movement 25 m east

- A second movement 48 m south

We can therefore write a vector representing the displacement as

$d=(25i-48j)$

where i is the unit vector indicating the east direction and j the unit vector indicating the north direction.

Therefore, the total displacement is just the magnitude of this vector:

$d=√(25^2+(-48)^2)=54.1 m$

And the direction is given by

$\theta=tan^(-1)((d_y)/(d_x))=tan^(-1) ((-48)/(25))=-62.5^(\circ)$

When applying the process of science which of theseis tested 1.a question, 2.an observation, 3.a conclusion, 4.a prediction

Answers

4. a prediction

Explanation:

According to the scientific method, an experiment is conducted to test a prediction/hypothesis stemming from the previous question.

A conclusion ... usually called a "theory" ... is tested. (3)

One great way to test a conclusion is to follow up on its predictions, and see how they turn out.

Dark cooler areas on the sun's surface are called what? (Prominences, solar flares, coronas, or sunspot)

Answers

Darker, cooler areas on the sun's surface are called sunspots.
Hope that helped =)

The answer in sunspot.

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