Balloon

A spherical balloon of radius 10 feet is in the open air. If angle of elevation of centre of the balloon from a point on the ground is 45^(@) and spherical balloon subtens on angle of 45^(@) on that point then how high is the centre of the balloon from the ground ?

A spherical balloon contains 1 mole of He at T_(0) . The balloon material is such that the pressure inside is alwaus proportional to square of diameter. When volume of balloon becomes 8 times of initial volume, then :-

A balloon filled with air is just floating in water in a beaker, as shown in fig. If the balloon is submerged more by a small distance and released, then the balloon will move up or move down to bottom or remains at the same location where released. Explain.

A balloon reses from rest on the ground with constant acceleration g // 8. A stone is dropped from the balloon when the balloon has resen to a height of (H). Find the time taken by the stone to reach the ground.

An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be responsible for the attraction between the balloon and the wall?

A balloon is connected to an electric pole by a cable of length 215m inclined at 60^(@) to the horizontal.Determine the height of the balloon from the ground.Also,find the height of the balloon if the angle of inclination is changed from 60^(@) to 30^(@)

An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be responsible for the attraction between the balloon and the wall?

A spherial balloon contains air at temperature T_(0) and pressure P_(0) . The balloon material is such that the instantaneous pressure inside is proportional to the square of the diameter. When the volume of the balloon doubles as a result of heat transfer, the expansion follows the law