The length of a road roller is 2m and the diameter of its edges is 50 cm.It takes 700 revolutions to level a ground .Find the area of the field.

A wheel rotates making 20 revolutions per second. If the radius of the wheel is 35 cm., what linear distance does a point of its rim traverse in three minutes ?

A rectangular coil of dimensions 40 cm xx25 cm having 1000 turns rotates in a uniform magnetic field of strength 0.08 Wbm^(-2) about an axis perpendicular to the field. If the coil makes 300 revolution per minute, find the instantaneous emf when the plane of the coil make and angle of 0^(@)

A rectangular coil of dimensions 40 cm xx25 cm having 1000 turns rotates in a uniform magnetic field of strength 0.08 Wbm^(-2) about an axis perpendicular to the field. If the coil makes 300 revolution per minute, find the instantaneous emf when the plane of the coil make and angle of 45^(@)

A rectangular coil of dimensions 40 cm xx25 cm having 1000 turns rotates in a uniform magnetic field of strength 0.08 Wbm^(-2) about an axis perpendicular to the field. If the coil makes 300 revolution per minute, find the instantaneous emf when the plane of the coil make and angle of 90^(@) with the magnetic lines of force.

The wheel of a railway carriage is 40 cm in diameter and makes 7 revolutions in a second, find the speed of train.

A wheel makes 180 revolution in 1 minute. The angle in radians through which it will turn in 1 second is:

A wheel makes 360 revolutions in one minute. Through how many radians does it turn in one second?

A wheel makes 720 revolutions in one minute. Through how many radians does it turn in one second?

Let us assume that our galaxy consists of 2.5 xx 10^11 stars each of one solar mass. How long will a star at a distance of 50,000 ly from the galactic centre take to complete one revolution ? Take the diameter of the Milky Way to be 10^5 ly.