There are 2 gates to enter a school and 3staircases from first floor to the second floor.How many possible ways are there for a studentto go from outside the school to a classroomon the second floor and come back?

A school has three gates and four staircases from the first floor to the socond floor. How many ways does a student have to go from outside the school to his classroom on the second floor?

A cylinder containing a gas is lifted from the first floor to the second floor. (a) What is the amount of work done on the gas? (b) What is the amount of work done by the gas?

In hotel Trident, the rooms are numbered from 101 to 130 on the first floor, 221 to 260 on the second floor and 306 to 345 on the third floor. In the month of June 2012, the room occupancy was 60% on the first floor, 40% on the second floor and 75% on the third floor. If it is also known that the room charges are 200, 100 and 150 on each of the floors, then find the average income per room for the month of June 2012.

There are 20 steps to go to the first floor of a building from the ground floor . A child starts climbing up from the first step of the ground level . Mother starts coming down from the fourth step from the floor level of the first floor . If both have started at the same time with same speed, at which step would they meet counting from the first steps from the floor level of the first floor ?

Two balls of same mass are dropped from the same height onto the floor. The first ball bounces upwards from the floor elastically. The second ball stricks to the floor. The first applies an impulse to the floor of I_(1) and the second applies an imupulse I_(2) . The impulses obey :-

Two balls of same mass are dropped from the same height onto the floor. The first ball bounces upwards from the floor elastically. The second ball stricks to the floor. The first applies an impulse to the floor of I_(1) and the second applies an imupulse I_(2) . The impulses obey :-

Two balls of same mass are dropped from the same height onto the floor. The first ball bounces upwards from the floor elastically. The second ball stricks to the floor. The first applies an impulse to the floor of I_(1) and the second applies an imupulse I_(2) . The impulses obey :-

A cylinder containing a gas is lifted from the first floor to the second floor. What is the amount of work done on the gas? What is the amount of work done by the gas? Is the internal energy of the gas increased ? Is the tempreture of the gas increased?