Work

A couple moment is a ________ vector.

Which of the following is correct for the moment of couple $\mathrm{M}$ caused by two forces of same magnitude $\mathrm{F}$ and are separated by a distance $\mathrm{r}$?

The distance between the forces acting in the couple is-

Couple is having a combination of two forces. They are different in magnitude-

 The dimensional formula of speed is-

If $\mathrm{L}$ and $\mathrm{R}$ denote inductance and resistance; respectively, then the dimension of $\raisebox{1ex}{$\mathrm{L}$}\!\left/ \!\raisebox{-1ex}{$\mathrm{R}$}\right.$ is given by

The distance covered by a particle in time $\text{'}\mathrm{t}\text{'}$ is given by $=\mathrm{at}+{\mathrm{bt}}^2$, where $\mathrm{a}$ and $\mathrm{b}$ are two constant. The dimensional formula of $\text{'}\mathrm{b}\text{'}$ is

The dimensions of kinetic energy is-

Choose the physical quantity having same dimensions formula as that of energy.

Select the correct statement for work, heat and change in internal energy.

The unit $\mathrm{N}-\mathrm{s}$ is equivalent to:

The C.G.S. unit of work is

The CGS unit of work is-

A block of mass $50 \mathrm{kg}$ just slides over a distance of $1 \mathrm{m}$. If the coefficient of friction between their surfaces is $0.2$, the work done against friction is

A cubical vessel of height $1 \mathrm{m}$ is full of water. What is the amount of work done in pumping water out of the vessel?

[Take $g=10 {\mathrm{ms}}^{-2}$]

When a force is applied on a moving body, its motion is retarded. Then the work done is

A block of mass $50 \mathrm{kg}$ just slides over a distance of $1 \mathrm{m}$. If the coefficient of friction between their surfaces is $0.2$, the work done against friction is

A cubical vessel of height $1 \mathrm{m}$ is full of water. What is the amount of work done in pumping water out of the vessel?

[Take $g=10 {\mathrm{ms}}^{-2}$]

When a force is applied on a moving body, its motion is retarded. Then the work done is

Whenever a force is applied, work is done.