All categories

3 years ago

The force of friction on an object is dependent on two things. what are they?

Physics

1 answer:

ruslelena [56]3 years ago

7 0

1.the kinds of surface
2.the amount of force pushing the surfaces together

You might be interested in

The gravitational force between two objects is proportional to the square of the distance between the two objects.

Darina [25.2K]

Answer: True!

Explanation: The force is proportional to the square of the distance between 2 point masses

3 0

3 years ago

A powered winch is used to pull a sailboat to shore. The winch uses a 900 W motor. If the motor is used for 30 s, how much work

kolbaska11 [484]

Answer:

they have given us

power = 900W

time = 30s

$p = \frac{wd}{t} \\ p \times t = wd \\ 900 \times 30 = w.d \\ 27000j$

4 0

3 years ago

Read 2 more answers

Rick is moving a wheelbarrow full of bricks out to the curb. The bricks in the wheelbarrow weigh more than Rick is able to carry

USPshnik [31]

Answer is given below

Explanation:

This is happen because here when Rick walks with full loaded wheelbarriow of bricks, he able to move it because Rick lifts the wheelbarrow handle
So, most of the weight of full loaded wheelbarrow's load goes on that's wheel and due to friction force between wheel and surface it can easy to move
He uses force to rotate the wheel, much more than the force applied to the rim of the wheel on the axis of rotation or torque

3 0

4 years ago

A basketball seems flat after being left out in cold. Once it warms up, it seems fine. Explain why.

Tema [17]

The cold air increases pressure on the basketball, causing it to appear flat. When it warms up that pressure is taken off, so the basketball is at it's normal state.

4 0

3 years ago

The diameter of a copper atom is approximately 2.28×10−10 m. The mass of one mole of copper is 64 g. Assume that the atoms are a

Kamila [148]

Answer : The mass of one copper atom is, [tex1.06\times 10^{-25}kg[/tex]

Explanation : Given,

Mass of one mole of copper = 64 g

First we have to convert the mass of copper from gram to kilogram.

Conversion used :

1 kg = 1000 g

or,

1 g = 0.001 kg

So, mass of copper = 64 g = 0.064 kg

Now we have to calculate the mass of one copper atom.

As, $6.022\times 10^{23}$ atoms of mass of copper = 0.064 kg

So, 1 atoms of mass of copper = $\frac{0.064}{6.022\times 10^{23}}=1.06\times 10^{-25}kg$

Thus, the mass of one copper atom is, [tex1.06\times 10^{-25}kg[/tex]

5 0

3 years ago