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dedylja [7]
3 years ago
14

A neutron star has more mass then what and is about the same size as what?

Physics
1 answer:
Alex_Xolod [135]3 years ago
5 0
A neutron star has more mass than a bowling ball,
and is about the same size as Chicago.
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True or false: Everything in the universe works with harmony because of balanced energy
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Answer:

Explanation:

True

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Which of the following is an example of rolling friction?
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A 120 kg tackler moving at 3.0 m/s meets head-on (and tackles) a 91 kg halfback moving at 7.5 m/s. What will be their mutual vel
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Explanation:

It is given that,

Mass of the tackler, m₁ = 120 kg

Velocity of tackler, u₁ = 3 m/s

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v=\dfrac{m_1u_1+m_2u_2}{m_1+m_2}

v=\dfrac{120\ kg\times 3\ m/s+91\ kg\times (-7.5\ m/s)}{120\ kg+91\ kg}

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3 0
3 years ago
calculate the work done in kilo joules in lifting a mass of 20kg at steady velocity through a vertical height of 20m
bulgar [2K]

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\huge\boxed{\sf Work\ done = 4 kJ}

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<h3>P.E. = mgh </h3>

Where,

m = mass = 20 kg

g = acceleration due to gravity = 10 m/s²

h = vertical height = 20 m

So,

<h3>Work done = mgh</h3>

Work done = (20)(10)(20)

Work done = 4000 joules

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\rule[225]{225}{2}

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