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Slav-nsk [51]
3 years ago
13

How is work involved in stopping a car?

Physics
2 answers:
horrorfan [7]3 years ago
8 0

................................

vichka [17]3 years ago
5 0
You have to move your foot to stop the car so I guess that would be considered work by moving your foot
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An object of mass 8kg moved around the circle of radius 4m. with a constant speed of 15m/s.
Marianna [84]

Answer:

a. Angular velocity = 0.267rad/s.

b. Centripetal acceleration = 56.25m/s.

Explanation:

<u>Given the following data;</u>

Mass, m = 8kg

Radius, r = 4m

Constant speed, V = 15m/s

a. To find the angular velocity

Angular velocity = radius/speed

Substituting into the equation, we have;

Angular velocity = 4/15

Angular velocity = 0.267rad/s

b. To find the acceleration;

Centripetal acceleration = V²/r

Substituting into the equation, we have;

Centripetal acceleration = 15²/4

Centripetal acceleration = 225/4

Centripetal acceleration = 56.25m/s.

4 0
3 years ago
A rope.that is 1.50m long exhibits a standing wave pattern with 6 nodes if the frequency of the waves is 75.0 hz what is the vel
Sonja [21]
I think he answer is 34.32
4 0
3 years ago
Which of think following materials is the best is the best choice for an insulating material?
RSB [31]
You are correct, the answer is C. 

Good insulators are materials that do not allow heat, electricity, light or sound pass through easily. Materials like steel and silver (which are metals) are not good insulators because they make good conductors. They easily allow heat, electricity and the like pass through them. 

Thus, the answer is letter C. Rubber. 
7 0
3 years ago
Who is the father of nuclear physics?​
bija089 [108]

Answer: the father of the nuclear physics is Ernest Rutherford

Explanation:

5 0
3 years ago
An object is moving in the absence of a net force. Which of the following best describes the object's motion? -please help?
Gelneren [198K]
You can solve this by using Newton's First Law or Newton's Second Law.

1) Newton's First Law or Inertia Law states that in the abscense of a net force acting over an object, this will not chage its state of movement, i.e it will  remain at rest (if it is no moving) or with uniform movement (if the object is moving).

2) Newton's Second Law: Net force = mass * acceleration => acceleration = net force / mass = 0 / mass = 0.

Zero accelerations means rest or uniform movement.

First Law is implicit in Second Law.
7 0
2 years ago
Read 2 more answers
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