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UNO [17]
3 years ago
6

Your friend's car is stuck in the snow. You push very hard and become very 1 tired but the car won't move. Did you do work?

Physics
1 answer:
crimeas [40]3 years ago
7 0

Answer:

Yes you  worked

Explanation:

You may have not seen a good outcome but you did put effort in.

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Define moment of momentum. at which condition is it's magnitude zero?​
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Let's start with the concept of momentum. What is it? Linear momentum in physics is mathematically written as a product of mass and velocity of an object. Now let us suppose a body of mass m is moving in an inertial frame of reference with velocity v. Consider the fact that no external force is acting on the system. The momentum of this body is given by mv, where m is the mass and v is its velocity. In case of simple real world problems not delving into the realms of relativity, mass is a conserved quantity and it cannot be zero. Hence the velocity of the body must be zero and hence the momentum.

However, photons are considered to have a rest mass zero.

However note the point carefully "rest mass". A body in motion cannot have mass to be zero.

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Three identical resistors are connected in parallel to a battery. If the current of 12. A flows from the battery, how much curre
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Answer:

4 A

Explanation:

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Using the formula

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V=12\times \frac{4}{3}=16 V

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Hence, current flows through any one of the resistors is 4 A.

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