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4 years ago

Please help on this one!!

Physics

1 answer:

3241004551 [841]4 years ago

5 0

The answer is C. Power is a measure of how much work is done, or how much energy is transferred, in a certain amount of time.

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One of the problems with nuclear energy is the potential harm caused by nuclear radiation emitted by the materials used to gener

Serhud [2]

Answer:

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why no one is answering??

3 0

3 years ago

What is the direction of a vector that has the following components: x = -44 m y = -59 m

seraphim [82]

Answer:

i dont really nnow the answer so byee

8 0

3 years ago

What is heat a measure of ?A) kinetic energy B) potential energy C) thermal energy

disa [49]

Thermal energy, creates steam or pressure, therefore, if in a small space it creates pressure within its "shell"

5 0

3 years ago

A 0.280-kg volleyball approaches a player horizontally with a speed of 15.0 m/s. The player strikes the ball with her fist and c

Genrish500 [490]

Answer:

Impulse = 10.36 kg m/s

average force = 172.667 N

Explanation:

given data

mass = 0.280 kg

speed = 15.0 m/s

speed = 22.0 m/s

to find out

impulse and magnitude of the average force

solution

we know that Impulse is change in momentum that is

initial momentum = mass × speed ..........1

initial momentum = 0.28 × (15)

initial momentum = 4.2 kg m/s

Final momentum = mass × speed ..........2

Final momentum = 0.28 × (-22)

Final momentum = -6.16 kg m/s

so now we get Impulse that is

Impulse = 4.2 - (-6.16)

Impulse = 10.36 kg m/s

and

average force will be

average force = impulse ÷ time

average force = $\frac{10.36}{0.060}$

average force = 172.667 N

6 0

3 years ago

A merry-go-round is spinning at a rate of 4.04.0 revolutions per minute. Cora is sitting 0.50.5 m from the center of the merry-g

dsp73

Answer:

angular speed of both the children will be same

Explanation:

Rate of revolution of the merry go round is given as

f = 4.04 rev/min

so here we have

$f = \frac{4.04}{60} =0.067 rev/s$

here we know that angular frequency is given as

$\omega = 2\pi f$

$\omega = 2\pi(0.067)$

$\omega = 0.42 rad/s$

now this is the angular speed of the disc and this speed will remain same for all points lying on the disc

Angular speed do not depends on the distance from the center but it will be same for all positions of the disc

7 0

3 years ago