If a 4000 gram sample has a half-life of 1 million years and has 500 grams of radioactive parent isotope left how old is it
1 answer:
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The inductance of a solenoid is given by:
where
is the vacuum permeability
N is the number of turns of the solenoid
A is the area of one loop of the solenoid
l is its length
For the solenoid in our problem, N=500, and the radius of one loop is r=0.025 m, so the area of one loop is
and its length is l=0.20 m
So the inductance of the solenoid is
where
N is the number of turns of the solenoid
A is the area of one loop of the solenoid
l is its length
For the solenoid in our problem, N=500, and the radius of one loop is r=0.025 m, so the area of one loop is
and its length is l=0.20 m
So the inductance of the solenoid is
Answer:
Explanation:
Given
mass of crane
distance moved
Since it is moving with a constant velocity therefore net force on it is zero
Tension force=weight
T=mg
Work done by Tension T is
Work done by Gravity will be equal in magnitude but opposite in sign and can be obtained by work energy theorem which states that change in kinetic energy of object is equal to work done by all the forces