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zmey [24]
3 years ago
12

;-; please help me....​

Physics
1 answer:
sineoko [7]3 years ago
5 0
The answer is 24N. Since the body is moving with constant velocity all the forces must balance (equal & opposite)
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Even when shut down after a period of normal use, a large commercial nuclear reactor transfers thermal energy at the rate of 150
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Answer:2.89\approx 2.9^{\circ}C/s

Explanation:

Given

Power\left ( P\right )=150 MW

mass of core\left ( m\right )=1.60\times 10^5 kg

Average specific heat \left ( C\right )=0.3349 KJ/kg^{\circ}C

And rate of increase of temperature =\frac{\mathrm{d}T}{\mathrm{d} t}

Now

P=mc\frac{\mathrm{d}T}{\mathrm{d} t}

150\times 10^6=1.60\times 10^5\times 0.3349\times \frac{\mathrm{d}T}{\mathrm{d} t}

Thus \frac{\mathrm{d}T}{\mathrm{d} t}=[tex]\frac{1.60\times 10^5\times 0.3349}{150\times 10^6}

\frac{\mathrm{d}T}{\mathrm{d} t}=2.89\approx 2.9^{\circ}C/s

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3 years ago
Centripetal force is a centering force related to acceleration. The centripetal force when driving prevents which of the followi
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C. The car from driving off the road on a curve

Explanation:

A centripetal force actually causes circular motion. This occurs when an object moves in a circular path or a circle,a force will definitely act on it.

For instance, a car travelling in a circular path must definitely experience this force acting on it, even when the car moves at a constant speed. If it does not exist the object will definitely spin off in a direction tangential to the circular path or curve.

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Atomic nuclei are made of protons and neutrons. This fact by itself shows thatthere must be some other type of force in addition
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Protons and neutrons are packed together in a very small region called nucleus. Protons are positively charged and we know that like charges repel. Then how is it that protons are not repelling each other and flying away from nucleus?

You may think that gravitational force is holding all the protons together but it is not so. Gravitational force is many times weaker than repulsive force.

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tiny-mole [99]

Answer:

–1.1 × 10^11 N

Explanation:

I did the assignment

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Which discovery did Galileo make to support the theory that the planets, including Earth, orbit the Sun?
const2013 [10]

The answer to your quesiton is,

A) Venus has phases.

-Mabel <3

7 0
3 years ago
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