You drive a car 2.0 h at 40 km/h, then 2.0 h at 80 km/h. (a) What is your average velocity? km/h (b) Do you get the same answer if you drive 120 km at each of the two speeds above? no yes

A force of 100N was necessary to lift a rock. A total of 150J of work was done. How far was the rock lifted?

Waves that move by replacing particles

What does a Halogen atom give off when it gains an electrons?

To prevent contamination laundered linens should be kept A. the closet B. In the locker room C. In the restroom D. Under an open stairwell

Which term describes substances that absorb some wavelenths of light

A commercial jet flies at 550mi/hr for 3000mi. For how much time does the jet fly?

If almost any system in stable equilibrium is slightly disturbed, it will then exhibit simple harmonic motion because 1. the change in potential energy is proportional to the cube of the displacement from the equilibrium position. 2.

Is the following statement true or false? Nuclear fission occurs naturally in stars.

Why is it useful to calculate average speed?

Which describes freefall