Physics

When a person on a turn table will raise his hands, there will be increase in the momentum of inertia. Hence, the angular velocity of the turntable will decrease.

The law of conservation of energy states that energy can neither be created nor destroyed.

When connected in series, the voltages divide in them in the ratio of their resistances. The voltage of 440 V devides in such a way that voltage across 25 w bulb will be more than 220 V. Hence 25 w bulb will fuse.

Cover of the solar cooker is made of glass because glass allows the sunlight to pass through it and concentrate at one focal point, it also prevents heat to escape out of the cooker.

Syrup has the highest viscosity.

The size of the gear is usually specified by the pitch circle diameter. It is also called as pitch diameter.

A cantilever is a beam anchored at only one end. The beam carries the load to the support where it is resisted by moment and shear stress. Cantilever construction allows for overhanging structures without external bracing. Cantilevers can also be constructed with trusses or slabs. This is in contrast to a simply supported beam such as those found in a post and lintel system. A simply supported beam is supported at both ends with loads applied between the supports. Cantilevers are widely found in construction, notably in cantilever bridges.

The centre of mass lie outside the body for a ring.

The red colour in the sky at sunset (and sunrise) is due to an effect called Rayleigh scattering. There is a similar form of scattering called Mie scattering which is responsible for the white colour of clouds.

Megahertz is a measurement of frequency.