In any food chain or web, the original source of energy is

A substance with a definite shape and volume is in which state of matter?

Which part of the electromagnetic spectrum have the highest level of photon energy

Resistance training is sometimes called what training

An atom of sodium has a larger mass than an atom of neon. How is this possible when neon has so many more valence electrons? What particles make up most of the mass of an atom? What takes up most of the volume of an atom?

Which properties should an object, system, or process have in order for it to be a useful standard of measurement for a physical quantity such as length or time?

You push a piano 5 meters across the floor with a force of 400 n. how much work have you done?

Monochromatic electromagnetic radiation illuminates an area of a surface. The electric and magnetic fields of the waves are then doubled in magnitude.

The measure of the force of gravity on an object, expressed as mass of the object times acceleration due to gravity is called

Which of the following jobs does not require good swimming ability

An object has an emissivity of 0.725. At temperature T, it radicates heat at a rate of 10 W. What is its rate of heat radiation at temperature 2 T