3 years ago

How high up is a 3 kg object that has 300 joules of energy?

Physics

1 answer:

valkas [14]3 years ago

4 0

Use the Formula PE=mgh to solve for height.

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maria [59]

She is
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3 years ago

When you break a magnet in half how many poles does each piece have.

Anastaziya [24]

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3 years ago

A car starts from rest and after 20 seconds it's velocity becomes 108km find the acceleration of the car

andre [41]

Answer:

1.5 km/s²

Explanation:

Given that:

a car starts from rest; it means the initial velocity (u) = 0 km/hr = 0 m/s

after time (t) = 20 seconds

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The acceleration (a) of the car can be determined by using the formula:

$a = \dfrac{v-u}{t}$

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a = 1.5 km/s²

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3 years ago

What is the frequency of a wave that has a period of vibration of 2 seconds?

34kurt

Answer:

The answer is 0.5 Hz

Explanation:

Its pretty easy to get the answer. One hertz (Hz) is equal to one cycle or period per second. So, just divide the period by the number of seconds.

1 period/2 secs = 1/2 Hz or 0.5 Hz

7 0

3 years ago

If the mass of a 1.8 g paperclip was able to be completely converted to energy, how much energy would you obtain?

Anton [14]

Answer:

$E=1.62\times 10^{14}\ J$

Explanation:

Given that,

The mass of the paperclip, m = 1.8 g = 0.0018 kg

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Where

c is the speed of light

So,

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So, the energy obtained is $1.62\times 10^{14}\ J$ .

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3 years ago