In which of the following is the speed of sound maximum?

Helium

Air

Aluminium

Water

What will be the acceleration of a 40-kilogram object that is pushed with a net force of 80 newtons?

A closed system consisting of 4 lb of gas undergoes a process in which the relation between pressure and volume is pVn = constant. The process begins with p1 = 15 psi, v1 = 1.25 ft3/lb and ends with p2 = 53 psi and v2 = 0.5 ft3/lb.

A transformer is to be used to provide power for a computer disk drive that needs 6.4 V (rms) instead of the 120 V (rms) from the wall outlet.

Which type of star cluster forms from tightly packed groups of older stars? O binary O eclipse O globular O open

What is temperature? Question 10 options: A. An indirect measure of heat energy B. The same thing as heat energy C. A direct measure of internal kinetic energy D. The amount of calories in a substance E. A direct measure of external kinetic energy

How long does it take a car to travel 450 km at 75 km/hr

A free-falling golf ball strikes the ground and exerts a force on it

What are the main activities involved in studying physics?

What is the energy that moves your arms and legs

A moving object can be in equilibrium. Explain.