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3 years ago

A factory worker pushes a box across the rough floor what forces apply

Physics

1 answer:

Ede4ka [16]3 years ago

7 0

Answer:

Friction

Explanation:

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.

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What is the meaning of the word solar in the article "Fire Up the Sun"?

SpyIntel [72]

Answer:

B) Caused by the Sun

Explanation:

If you look at a picture of a solar system, you will see the sun in the middle. The sun is the powerhouse of the solar system. So that means that the sun is the biggest star and can provide enough light to reach earth and keep it lit.

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3 years ago

True or False? A model train traveling at a constant speed around a circular track has a constant velocity.

RSB [31]

For both, remember that velocity is a vector force, meaning that it has both a magnitude and direction. Since direction is part of the vector, if the direction changes so does the velocity in general. The changing of velocity is acceleration, so for 1 the answer is False.
For 2 I'm not sure what you meant, but the answer is the acceleration changes but the velocity does not.

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3 years ago

Read 2 more answers

A spring with a spring constant of 40n/cm has a cage attached to one end. how much work does the spring force do on the cage if

Bumek [7]

Work of a spring:
W = 0.5 × k × x²

k spring constant
x stretch of the spring

make sure to convert all quantities into the correct units before using the equation

4 0

3 years ago

Ayuda!!!!<br> ..........................................................

kobusy [5.1K]

Answer: the answer would be 200v I'm pretty sure :)

Explanation:

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3 years ago

When a certain jet engine is running, 11,500 W of power goes into its deafening roar. How far away from this engine can you stan

makkiz [27]

Answer:

30.25129 m

Explanation:

I = Sound intensity

$\beta$ = Intensity level = 120 dB

$I_0$ = Threshold of human hearing = $10^{-12}\ W/m^2$

r = Distance

P = Power = 11500 W

Intensity of sound is given by

$\beta=10log\dfrac{I}{I_0}\\\Rightarrow 120=10log\dfrac{I}{10^{-12}}\\\Rightarrow \dfrac{120}{10}=log\dfrac{I}{10^{-12}}\\\Rightarrow 10^{\dfrac{120}{10}}=\dfrac{I}{10^{-12}}\\\Rightarrow I=10^{\dfrac{120}{10}}\times 10^{-12}\\\Rightarrow I=10^{0}\\\Rightarrow I=1\ W/m^2$

Intensity is given by

$I=\dfrac{P}{4\pi r^2}\\\Rightarrow r=\sqrt{\dfrac{P}{4\pi I}}\\\Rightarrow r=\sqrt{\dfrac{11500}{1\times 4\pi}}\\\Rightarrow r=30.25129\ m$

The distance is 30.25129 m

7 0

4 years ago

￼ A factory worker pushes a box across the rough floor what forces apply

A factory worker pushes a box across the rough floor what forces apply