A simple machine that consists of a flat sloping surface with one end higher than the other

A simple machine can convert one form of energy to the other.

The adjoining figure represents a solid consisting of a cylinder surmounted by a cone at one end and a hemisphere at the other end. Given that common radius =3.5 cm the height of the cylinder =6.5 cm and the total height =12.8 cm , claculate the volume of the solid correct to the nearest cm.

Equal amount of a reactant were taken in two closed flasks of same capacity but even then the rate of reaction in one flask was found to be higher than the other. Under what conditions it is possible?

A small particle of mass m moving inside a heavy, hollow and straight tube along the tube axis undergoes elastic collision at two ends. The tube has no friction and it is closed at one end by a flat surface while the other end is fitted with a heavy movable flat piston as shown in figure. When the distance of the piston from closed end is L = L_0 the particle speed is v = v_0 The piston is moved inward at a very low speed V such that V

The plant part which consists of two generations one within the other, is

"A mass is attached to one end of a spring and by holding the other end in hand, the spring is whirled in a horizontal circle" What happens to the length of the spring ?

A radius of a circle is a line segment with one end point at..... and the other end-point on .....

In this method, a low melting metal like tin can be made to flow on a sloping surface. In this way it is separated from higher melting impurities . This method is known as

Look at the three tuning forks given in Figure B. The longest is I, the middle one is II, and the shortest is III. Looking at the length find out which one has a higher pitch than the others.

A man of mass M stands at one end of a plank of length L Which lies at rest on a frictionless surface . The man walks to the other end of the plank. If the mass of the plank is 3M, the distance that the man moves relative to the ground is