4 years ago

What is nuclear radiation?

1 answer:

4 0

Answer:

noun. Physics. radiation in the form of elementary particles emitted by an atomic nucleus, as alpha rays or gamma rays, produced by decay of radioactive substances or by nuclear fission.

Explanation:

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What other angle would give the same range at 19 degrees?

yaroslaw [1]

Answer:

I think it is acute angle.

Explanation:

Because it is an angle between 0° and 90°. Hope this answer wil help you.

8 0

3 years ago

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How much would a man on Mars weigh if he had a mass of 75 kilograms and the acceleration due to gravity on the surface of Mars i

blsea [12.9K]

Answer:

F = 75(3.7) = 277.5 ≈ 280 N

Explanation:

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3 years ago

Sam heats an 8kg sample of sand, with a specific heat of 664 J/kg·C°, from 20° to 40°. What is the change in thermal energy?

zysi [14]

Answer:

106.24 kJ.

Explanation:

Given that,

Mass of sample of sand, m = 8 kg

Specific heat of sand, c = 664 J/kg-°C

The temperature changes from 20° C to 40° C. We need to find the change in thermal energy. It is given by :

$Q=mc\Delta T\\\\Q=8\times 664(40-20)\\\\=106240\ J\\\\=106.24\ kJ$

So, the change in thermal energy is 106.24 kJ.

7 0

3 years ago

A basketball rolls to a stop along a gym floor without anyone touching it. What answer choice BEST explains why this occurred?

Alex777 [14]

<h3><em>Frictional forces are exerting force against the basketball, causing it to stop.</em></h3>
<h3>If USATestPrep, I think answer choice B is correct </h3>

<u><em>Tell me if i'm wrong </em></u>

4 0

4 years ago

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A biker travels at an average speed of 18 km/hr along a 0.30 km straight segment of a bike path. How much time (in hours) does t

lawyer [7]

Answer: 0.016 h

Explanation:

$\text{Average speed} = \frac{\text {Total Distance}}{\text {total time taken}}$