Tag: idea of energy
Questions Related to idea of energy
What type of energy conversion takes place when a compressed spring is released?
The negative of the work done by the conservative internal forces on a system equals to the change in
$1\ hp$ is equal to:
The unit of work is joule $(J)$ in the $SI$ system and erg in the $CGS$ system. Find number of ergs in $1\ joule$.
Which one is not a unit of energy.
How many joules are equivalent to $1$ unit of electricity.
A body of $1000 kg$ moving with $0.3m/s$ in +x direction. A hole is present at the bottom of body such that, mass is dropping at rate of $20 gm/sec$, inn -y direction. Find out force exerted by ejecting mass on body.
Work done charge of mass 2 Kg due to external force against electrostatics force is - 10 J if charge is displaced from A to B. Velocity of charge at point A is 4m/s and at B is 2m/s then find difference is electropotential energy $ (U _s - U _A) $
Taking the unit of work as Joule and the unit of amount of heat as K cal, the magnitude in Joule for mechanical equivalence of heat is:
How many joules is equal to one calorie?