The head of a state government in the United States is referred to as which of the selections below?

As heat is added to a substance undergoing a phase change, the temperature remains constant because the energy is being used to

Phase change requires ... A. an increase in energy B. a decrease in energy C. an increase or decrease in energy D. the destruction of energy E. the creation of energy

Why it is important to eat a full healthy meal before an afternoon of playing sports?

A bucket of water of mass 14.7 is suspended by a rope wrapped around a windlass, that is a solid cylinder with diameter 0.280m with mass 11.6 kg. the cylinder pivots on a frictionless axle through its center.

Galileo Galilei is one of the most revered scientists of all time. What descoveries did he make with his simple telescope?

The act, process or state of the change in place or position oa a body with respect to time and relative to the observer is said to be : - 1. Rest 2. Stationary 3. Motion 4. None of the above

During a snowball fight two balls with masses of 0.4 kg and 0.6 kg, respectively, are thrown in such a manner that they meet head on and combine to form a single mass of 1 kg. the magnitude of intial velocity foreach is 15 m/s.

Which phases of matter do molecules have the lowest amount of energy?

How many Oxygen (O) atoms are in the following? H2O + CO2 4 3 2

How does surface roughness affect friction