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Motion In Straight Line

Question
CBSEENPH11017454
Wired Faculty App

Find the gravitational force between two neutrons whose centres are 3 x 10-14m apart. Mass of neutron is 1.67 x 10-27kg.

Solution

Given,
Mass of neutron, straight m equals 1.67 cross times 10 to the power of negative 27 end exponent kg 
Distance between the centres of two neutrons,straight r equals 3 cross times 10 to the power of negative 14 end exponent straight m

The gravitational force between two neutrons is, 
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               = 2.07 cross times 10 to the power of negative 37 end exponent straight N 

Some More Questions From Motion in Straight Line Chapter

Can a body be always at rest in some frame?

Can a body be in motion in the frame associated with the body itself?

When an object in motion can be considered as particle or point object?

Can you think of physical phenomena involving the moon in which moon cannot be treated as particle?

A train is crossing the bridge. Can it be taken as a particle?

Can a train be taken a particle? Give an example in support of your answer.

 A particle is moving along curved line in space. Is the motion one dimensional?

State which of the following are examples of one, two or three dimensional motion: 

(a) A kite flying in the sky.

(b) The earth revolving around the sun. 

(c) A train moving along the equator of the earth in clockwise direction. 

(d) Accelerated motion of a particle in a straight line.

Define distance.

Define displacement.

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