2 years ago

2. What is equal to the kinetic energy of a car with a mass of 0.5t (tonne) if it travels

Physics

1 answer:

GalinKa [24]2 years ago

7 0

Answer:

7.14kg/h

Explanation:

=500kg/70h

=7.14kg/h

You might be interested in

Review please help.

iragen [17]

Answer:

1 and 3

Explanation:

because they are going up from 0

7 0

3 years ago

How do you draw an ear

Neporo4naja [7]

Answer:

drawing of ear step by step

8 0

3 years ago

When you do work on an object some of your energy is ____ to that object

HACTEHA [7]

Maybe the word could be converted?

8 0

3 years ago

Which of the following is NOT a mental process?

sergij07 [2.7K]

Answer:

Its A. Walking on the beach

4 0

3 years ago

Read 2 more answers

A sinusoidal wave traveling on a string has a period of 0.20 s, a wavelength of 32 cm, and an amplitude of 3 cm. The speed of th

Finger [1]

Answer:

$v = 1.6 \frac{m}{s} *\frac{100cm}{1m}= 160 \frac{cm}{s}$

Explanation:

If we have a periodic wave we need to satisfy the following basic relationship:

$v = \lambda f$

From the last formula we see that the velocity is proportional fo the frequency.

For this case we have the following info given by the problem:

$T= 0.2 s, \lambda =32 cm* \frac{1m}{100cm} =0.32 m, A= 3cm*\frac{1m}{100 cm}=0.03 m$

We know that the frequency is the reciprocal of the period so we have this formula:

$f = \frac{1}{T}$

And if we replace we got:

$f =\frac{1}{0.2 s}= 5Hz$

Now since we have the value for the wavelength we can find the velocity like this:

$v = 0.32 m * 5Hz = 1.6 \frac{m}{s}$

And if we convert this into cm/s we got:

$v = 1.6 \frac{m}{s} *\frac{100cm}{1m}= 160 \frac{cm}{s}$

6 0

3 years ago