Gravity and friction are two kinds of

a. inertia

b. forces

c. masses

d. gravity

What will be the kinetic energy of a pile driver ram that starts from rest and undergoes a 10kj decrease in potential energy?

This is a unit of electrical resistance

What determines if an object is moving?

Which of the following best describes alternating current? current that increases and decreases in temperature current that constantly turns on and off current in which charges change direction current that gains and loses electrons

Which statement does not correctly describe a theory? A. It is based on scientific evidence. B. It can be used to make predictions. C. It can be modified as new discoveries are made. D. It is directly testable.

Which statement correctly compares infrared light to ultraviolet light?

Name the regions of a electromagnetic spectrum from the shortest wavelength to the longest wavelength

a worker climbs a ladder and does 8 J of work on a 2 N object. What is the distance they lift the object

Discuss how electric current is able to flow.

What techniques allow us to identify the presence of different elements?