Which of these is not an example of a physical change?

a. a nail rusting

b. a rock cracking

c. blowing up a balloon

d. stretching a piece of clay

As the bullet flies through the air it is affected by which of the following forms of force? A. Balanced forces B. Unbalanced forces C. Equal forces D. Unequal forces

What does total distance represent?

When electric current is flowing in a metal, the electrons are movinga. at nearly the speed of light. b. at the speed of sound in air. c. at the speed of sound in the metal. d. at none of the above speeds. e. at the speed of light.

What is the opposite force to pushing off the ground to jump

List two examples of situations were neutral object is charged by conduction, induction and friction

Write 5 questions about how energy is used with answers (Ex-What does a toaster use to toast bread?" A: Mechanical - - > Thermal

It is desiredto FDM 30voice channels (each with a bandwidth of 4.5KHz) along with a guard band of 0.8KHz.

Solve each problem. Be sure to show your work and give a final answer with units rounded to the given number of significant figures. 1) Find the voltage on a circuit with a resistance of 12.5 Ω if it has a current of 2.35 A. 2) If a circuit with a 9.

How do you best determine whether j/m2 and m*s2/n are equivalent units?

Which is the most important radiation conduction or convection? Explain