3 years ago

A book on a 2 meter high shelf has 20 Joules of potential energy.

Physics

1 answer:

Sever21 [200]3 years ago

4 0

Mass of this book is 1 kg.

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a 2-kg object is dropped from a height of 1000 m. What is the force of air resistance on the object when it reaches terminal vel

strojnjashka [21]

It stops accelerating when the air resistance is equal to its weight.
That's (m•g)

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= 19.6 newtons

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3 years ago

A 4.0 kg shot put is thrown with 30 N of force. What is its acceleration?

weeeeeb [17]

7.5 m/s

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Consider two ideal gases, A & B, at the same temperature. The rms speed of the molecules of gas A is twice that of gas B. Ho

uysha [10]

Answer:

option (d)

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v proportional to \frac{1}{\sqrt{M}} keeping the temperature constant

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$\frac{v_{A}}{v_{B}}=\sqrt{\frac{M_{B}}{M_{A}}}$

$\frac{2v_{B}}{v_{B}}=\sqrt{\frac{M_{B}}{M_{A}}}$

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3 years ago

If a car is moving backward and has negative acceleration, what can be said about the speed of the car?

KATRIN_1 [288]

I think its A let me know its wrong or not

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3 years ago

Read 2 more answers

guapka [62]

Answer:

Pressure, P = 32666.66 Pa

Explanation:

It is given that,

Surface area of foot of Bimaba is 150 cm² or 0.015 m².

Her weight is 50 kg

We need to find the pressure does she exert on the ground, as she stands on her one foot. The force acting per unit area is called pressure. It can be given by :

$P=\dfrac{F}{A}\\\\P=\dfrac{mg}{A}\\\\P=\dfrac{50\times 9.8}{0.015}\\\\P=32666.66\ Pa$

So, the pressure is 32666.66 Pa.

7 0

3 years ago