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4 years ago

HURRRRRRRRRYYYYYYYYYYYYYYYYYYYY!!!!!!

2 answers:

4 0

Friction resists motion.
Friction is a contact force.
Friction is caused by microscopic bumps and ridges on surfaces.

They all correct, just took the quiz.

Tresset [83]4 years ago

3 0

Answers:

3 Friction is a contact force.

4 Friction is caused by microscopic bumps and ridges on surfaces.

Explanation:

Friction is a force that opposes the motion of an object. For example, when you are sliding a box along a surface, there is a friction force that resists the motion.

The friction force is caused by the contact between the molecules of the external surfaces of the object and the molecules of the surface where the object is sliding over. Therefore, it is a contact force (statement 3) and also it is caused by the bumps and ridges on the surfaces (statement 4): in fact, if the surfaces were perfecly smooth, in theory there would be no friction (but this is impossible in reality).

You might be interested in

you push a 51 kg box with a force of 485 N. the friction force on the box is 232 N. calculate the acceleration of the crate.

vichka [17]

Answer:

a = 4.96 m/s²

Explanation:

Given,

The mass of the box, m = 51 Kg

The magnitude of the applied force, Fₐ = 485 N

The friction force on the box, Fₓ = 232 N

The net force acting on the box is,

F = Fₐ - Fₓ

Substituting the given values in the above equation

F = 485 - 232

= 253 N

The acceleration of the crate is given by

a = F/m

= 253 / 51

= 4.96 m/s²

Hence, the acceleration of the crate is, a = 4.96 m/s²

3 0

3 years ago

Assume your computer has a power rating of 50.0 W, and you use your computer for 7.0 hours a day for a normal school day. If the

Vlad [161]

Answer is in the link

HTTPS:/www.word doc.com

6 0

3 years ago

Help! Will Mark Brainliest!

boyakko [2]

Answer:

D 5m/s

Explanation:

6 0

3 years ago

Our Sun is considered a(n) _____ star. A. small B. large C. giant D. average

faltersainse [42]

Checking a table of star sizes, we'll see that our Sun is a medium sized star, so the answer is D, average.

5 0

3 years ago

Facts about conolizing into mars?

Leto [7]

Answer:

xxxx

Explanation:

Mars also has a thin atmosphere. Because of this it has potential to host humans and other organic life. That makes Mars the best choice for thriving colony off the earth. The moon has also been proposed as the first location for human colonization but it not known to have air or water.

Hope this helps!

Have an amazing day/night

7 0

3 years ago