The volume of the room is the product of its dimensions:
Now, from the equation
where d is the density, m is the mass and V is the volume, we deduce
So, multiply the density and the volume to get the mass of air in the room.
If the 20-mm-diameter rod is made of A-36 steel and the stiffness of the spring is k = 61 MN/m , determine the displacement of e
1 answer:
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Explanation:
A positive point charge Q is fixed on a very large horizontal friction less tabletop. A second positive point charge q is released from rest near the stationary charge and is free to move.
As per the law of conservation of energy the change in kinetic energy is equal to the change in potential energy.
The mathematical expression for the conservation of energy is given by :
On solving the above equation, we get the value of v as :
In the above expression, as the term increase, as
increases, the value of
decreases. So, the correct option is (B) "As it moves farther and farther from Q, its speed will increase".