3 years ago

Please help step by step 15 points

Physics

1 answer:

BartSMP [9]3 years ago

3 0

3.87 i think but if its not correct then let me know.

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What heavy element was the chernobyl nuclear accelarators supposed to make?

Gala2k [10]

Answer

plutonium

Explanation:

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2 years ago

4. Uncle Harry weighs 180 pounds. What is his mass in kilograms?

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180 pounds (lb) converts to 81.647 kilograms (kg).

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A uniform, spherical, 1900.0 kg shell has a radius of 5.00 m. Find the gravitational force this shell exerts on a 1.80 kg point

Mandarinka [93]

Answer:

$F=9.09\times 10^{-9} N$

Explanation:

We are given that

Mass of spherical shell, $m_1$ =1900 kg

Mass= $m_2=1.80 kg$

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$F=G\frac{m_1m_2}{r^2}$

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Hence,the gravitational force = $F=9.09\times 10^{-9} N$

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2 years ago

A stone is thrown straight downward with a speed of 20 m/s from the top of a tall building. If the stone strikes the ground 3.0

Lady_Fox [76]

Do you remember this formula for the distance traveled while accelerated ?

<u>Distance = (initial speed) x (t) plus (1/2) x (acceleration) x (t²)</u>

I think this is exactly what we need for this problem.

initial speed = 20 m/s down
acceleration = 9.81 m/s² down
t = 3.0 seconds

Distance down = (20) x (3) plus (1/2) x (9.81) x (3)²

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3 years ago

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Answer:

yes

Explanation:

because it is independent of eachother

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1 year ago