PART - 1 CH - 5Work, Energy and Power — Physics STD 11 Science — Question

Backward dragging force of viscosity acting on a spherical body of radius r moving with velocity v through a fluid of viscosity n is equal to _________________.

A vector which have zero magnitude and arbitrary direction is known as ______.

Fill in the blanks:
The volume of a cube of side 1cm is equal to .....m³.

The maximum displacement of a particle moving in oscillatory or vibratory motion from its mean ____________ position is called.

Phase difference ____________X path difference.

Instantaneous acceleration of a particle moving along x-axis with displacement x = 18t + 5r²; is ______.

The velocity of efflux of a liquid through an orifice in the bottom of the tank depends on _______________ and ______________.

'Heat cannot itself flow from a body at lower temperature to a body at higher temperature' is a statement in consequence of ­­________________.

Maximum constant velocity attained by a spherical body while falling through a viscous medium is known as _________________.

The time-displacement graph of two cars is shown by two parallel lines. The relation in their velocities is ................ .