Is the number of protons and electrons the same for a neutral atom of a given element?

What form of energy is stored in food? Light energy Kinetic energy Chemical energy Mechanical energy

A magnetic dipole placed in a magnetic field Explain why the potential U can be written as.

A 200 watt t. v. is used for 20 hours in a week. If it is used for four weeks then what is cost of electricity if rate is 5rs/kwh

Calculate the spectral half-width at room temperature of an infrared LED of peak wavelength 550 nm.

Explain the runaway refrigerator effect and the role it may have played in the evolution of Mars.

A Blu-ray disc is approximately 11 centimeters in diameter. The drive motor of a Blu-ray player is able to rotate up to 10,000 revolutions per minute. (a) Find the maximum angular speed (in radians per second) of a Blu-ray disc as it rotates

A body has translatory motion if it moves along a

What is Nothing. (sorry i have been wondering this for a very long time)

What is the weight of a 15kg dog on earth?

Identify the scenario below as to whether they increase, decrease, or not change the frequency in which a string vibrates and thus change its pitch. Assume that no other changes are happening. 1. Tightening a string for greater tension 2.