A\lady walking towards.east on a road with,velocity of 10m/s-„encounters rain falling. vertically with a, velocity of ,30 .m/s. At what angle she- should hdd hep umbrella to protect herself from the rain?

Two equal drops of water are falling through air with a steady velocity of 0.1m/s. if the drops coalese, what will be its velocity?

A pump extracts water from 50m depth and ejects per sec 10 kg water with a velocity of 10m/s.Calculate is power.

A 14.5 kg mass, fastened to the end of a steel wire of unstretched length 1.0 m, is whirled in a vertical circle with an angular velocity of 2 rev/s at the bottom of the circle. The cross-sectional area of the wire is 0.065 cm^2 . Calculate the elongation of the wire when the mass is at the lowest point of its path.

27 identical drops of water are falling down vertically in air with a terminal velocity 0.15 m//s . If they combine to from a single bigger drop, what will be its terminal velocity.

A source of sound of frequency 500 Hz is moving towards an observer with velocity 30 m/s.The speed of the sound id 330 m/s.The frequency heard by the observer is

A [He^(2+)] ion travels a velocity of 10^5 m/s at right angles to a magnetic field of 0.80 T. What is the magnitude of the magnetic force on the ion ?

A particle is moving with a velocity 5m/s towards east and its velocity changes to 5m/s north in 10 second. Its acceleration is

A stone is allowed to fall from the top of a tower 100 m high and at the same time another stone is projected vertically upwards from the ground with a velocity of 25 m/ s. calculate when and where the two stones will meet.

A body of mass 2kg moving with velocity 10 m/s collides another body of mass 500 g and moving with velocity 4 m/s. After collision if the 2nd body attains velocity of 8m/s, what will be the velocity of first body?

Two drops of water of same size are falling through air with terminal veloity 10m/s. if the two drops coalese to form a single drop, what will be the new ternimal velocity?