Physics

The fuel that is used in a nuclear reactor to maintain a nuclear concatenation response is known as Nuclear fuel. These fuels are fissionable, and the most popular nuclear combustibles are radioactive elements such as uranium-235 and plutonium-239.

A drop of liquid assumes spherical shape because a sphere has the least surface area for a given volume.

A Sonometer is a device for demonstrating the relationship between the frequency of the sound produced by a plucked string, and the tension, length and mass per unit length of the string.

Power = work / time_x000D_ = 1000 / 2_x000D_ = 500 W

Nuclear energy, also called atomic energy, energy that is released in significant amounts in processes that affect atomic nuclei, the dense cores of atoms. It is distinct from the energy of other atomic phenomena such as ordinary chemical reactions, which involve only the orbital electrons of atoms.

The direction of torque is perpendicular to the direction of applied force.

Earth-orbiting astronauts are weightless for the same reasons that riders of a free-falling amusement park ride or a free-falling elevator are weightless. They are weightless because there is no external contact force pushing or pulling upon their body.

It is evident that the atmosphere is primarily heated from below by radiation from the heated Earth surface.

A washing machine by spinning at 800-1600 rpm helps soap and dirt with it to leave the surface of the cloth via centrifugal force and into outlet pipes hence utilizing centrifugation to both clean and partially dry the clothes loaded in it.

Let M and m grams be the mass of boat + rock in it. By law of floatation(M+m) grams of water will be displaced. This has a volume of (M+m)cc. That means the level of water in pool has risen up by (M+m)cc with the boat + rock when it is floating. If the rocks in the boat are thrown not into the pool but outside, the weight left is only M grams the weight of the boat. This will have displaced M cc of water only i.e less water than in the case of loaded boat. But if the rocks are put in the water in the pool and not outside, then the water in the pool will rise not only by M cc on account of empty boat but also by a volume of the stone put into it. This volume will be m/d where m is the mass of rock and d density of rock._x000D_ Now m/d is < m. Thus the total rise will be (M+m/d) which is < M + m.