Tag: substances, objects and energy
Questions Related to substances, objects and energy
Select the best definition of mechanical energy?
What is the relationship between the kinetic energy($K$), potential energy($P$) and total energy($E$) of a system?
Total energy of body is the sum of:
A body of mass $15\ kg$ is raised from certain depth. If the work done in raising it by $10m$ is $1620J$, its velocity at this position is$(g=10 { ms }^{ -2 })$:
A body of mass 5 kg falls from a height of
30 metre. If its all mechanical energy is changed into heat, then heat produced
will be:-
The conservation principle of mechanical energy requires that
Mechanical Energy is conserved under
A mass of $0.5$ kg is suspended from wire, then lemgth of wire increase by $3$ mm then find out work done:
The work done by all the forces (external and internal) on a system equals the change in
In a hydroelectric power plant ___ energy is converted into ____ energy.