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Dima020 [189]
3 years ago
5

What name is used for a high-power variable resistor?

Physics
2 answers:
alexandr1967 [171]3 years ago
6 0
The Answer B:Potentiometer
const2013 [10]3 years ago
3 0
The answer would be C: Rheostat.  :)
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Define electric field intensity​
Nimfa-mama [501]

Answer:

Electric field intensity is a Vector Field. Electric field intensity (E, N/C or V/m) is a vector field that quantifies the force experienced by a charged particle due to the influence of charge not associated with that particle

Explanation:

5 0
3 years ago
A person pushes on a 57-kg refrigerator with a horizontal force of 267 N; the - sign indicates that the force points in the +x d
disa [49]

(a) -267 N

Explanation: if the refrigerator is not moving, it means that the net force acting on it is zero.

We are only interested in the motion along the horizontal direction; there are two forces acting in this direction:

- The pushing force, forward, F=+267 N

- The static frictional force, backward, F_f

Since the net force must be zero, we have

F+F_f =0F_f = -F = -267 N

(b) 363.1 N

The largest pushing force that can be applied to the refrigeratore before it begins to move is equal to the magnitude of the maximum static frictional force, which is given by:

F_f = \mu mg

where

\mu=0.65 is the coefficient of static friction

m = 57 kg is the mass of the refrigerator

g = 9.8 m/s^2 is the gravitational acceleration

Substituting,

F_f = (0.65)(57 kg)(9.8 m/s^2)=363.1 N

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3 years ago
The earth rotates once per day about its axis. where would you have to stand in order to have the smallest tangential speed?
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<span>The earth as a whole rotates with a fixed angular velocity. Therefore, you need to be at the rotation axis to have the smallest tangential speed. This would be at the north or south pole.</span>
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Bromine vapour is heavier than air. even so it's spreads upwards in the experiment above. Why?
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Which of the following controls the normal breathing system ​
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