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Angelina_Jolie [31]
4 years ago
5

If you use a stick to push an object, the muscular force acting on it is a non contact force. True or false? Explain

Physics
2 answers:
Ede4ka [16]4 years ago
5 0
False, this push or force is caused by the action of our muscles in our body. this muscular force is a contact force
Licemer1 [7]4 years ago
5 0

False, because contact forces are those forces in which contact between two bodies is required. Even though we use a stick to push an object, the stick is in contact with our body, so it is not going to be a non-contact force.

Hope it helps...

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When a roller coaster gets to the bottom of a descent, describe the energy transfers and changes to energy stores that happen if
Feliz [49]

Answer:

its B

Explanation:

It's B & A at the same time because A. a roller coaster uses brakes to slow down and stop. B is the most reasonable answer. Because all roller coasters go up and over a second time over the hill, but they also slow down. But go with B.

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6 0
3 years ago
Air escaping out from an air hose at a gas station always feels cool. Why? ​
kati45 [8]

Answer:

The air is contained at a high pressure in the tube. When it escapes from a small orifice, it suddenly expands. A large amount of its heat is absorbed in the process of expansion resulting in considerable fall in its temperature. This is why the escaping air feels cold.

8 0
2 years ago
PLZZZ HELP
Doss [256]

Answer/Explanation:

The weight of an object is defined as the force that is exerted due to the gravitational force.

Mathematically, it can be written as :

W = m g

Where

m is the mass of the object

g is the acceleration due to gravity

Also,  

We know that the value of g varies with respect to the location. At the equator, the value of g is less as compared to the poles.

The feature of an object that affects its weight are :

Mass of the object

Location of the object

How much force Earth exerts on the object

4 0
3 years ago
If the airman had a mass of 80 kg, find the magnitude of the air drag acting on him when he reached terminal velocity of 54 m/s
Vlad1618 [11]

The magnitude of the air drag is 784 N

Explanation:

An object falling down reaches the terminal velocity when the magnitude of the air drag acting on it becomes equal to the weight of the object. Mathematically, this condition can be written as:

F_D = mg

where

F_D is the magnitude of the air drag

m is the mass of the object

g is the acceleration of gravity

In this problem, we have

m = 80 kg is the mass of the airman

g=9.8 m/s^2 is the acceleration of gravity

Substituting into the formula, we find:

F_D = (80)(9.8)=784 N

Learn more about forces here:

brainly.com/question/8459017

brainly.com/question/11292757

brainly.com/question/12978926

#LearnwithBrainly

4 0
3 years ago
More than 5 points and will pick brainliest answer plus I will give thanks❗️❕❗️(Don’t answer if you don’t know the answer)
Setler79 [48]
The answer is 2 and 3 because light bulbs dont produce uv rays and uv rays are very dangerous to people.
5 0
4 years ago
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