From a train moving with constant velocity 'V' a carriage on a road parallel to the track at distance'd' from it is observed to move so as to appear always in line with a more distant fixed object whose distance from the track is 'D'.What is velocity of the carriage

A mass m is moving with a constant velocity along a line parallel to the x-axis, away from the origin. Its angular momentum with respect to the origin.

A body of mass m is moving with a constant velocity along a line parallel to the x-axis, away from the origin. Calculate its angular momentum with respect to the origin?

A train blowing its whistle moves with a constant velocity v away from an observer on the ground. The ratio of the natural frequency of the whistle to that measured by the observer is found to be 1.2 . If the train is not rest and the observer moves away from it at the same velocity, this ratio would be given by

A train accelerates from rest at a constant rate alpha for some time and then it retards to rest at the constant rate beta . If the total distance covered by the train is s, then the velocity of the train is

A train is moving at a constant speed V when its driverobserves another train in front of him on the same track and voing in the same direction with constant speed v . If the distance berween the trains is x . Trains is x then what should be the minimum retardation of the train so as to avoed collision?.

The locus of a point which moves difference of its distance from two fixed straight which are at right angles is equal to the distance from another fixed straight line is

A stationary observer receiver a sound of frequency f_(0) = 2000 Hz .Sourece is moving with constant velocity on a road at some non-zero prependicular distance from observer . The apparent frequncy f varies with times as show in figure . Speed of sound = 300 m//s . Find the maximum apparent frequency.

A positive charge +Q is fixed at a point A. Another positively charged particle of mass m and charge +q is projected from a point B with velocity u as shown in (Fig. 3.103). Point B is at a large distance from A and at distance d from the line A C. The initial velocity is parallel to the line A C. The point C is at a very large distance from A. Find the minimum distance (in meter) of +q from +Q during the motion. Take Q q = 4 pi epsilon_0 m u^2 d and d (sqrt(2) - 1) m . .

The apparent wavelength of light from a star moving away from earth is observed to be 0.01% more than its real wavelength. The velocity of star is

As an object is moved from the surface of a thin converging lens to a focal point, over what range does the image distance very?