Ted walked 2.0 m west, 3.0 m west, and then 4.0 m east. what is the vector sum of his displacements, shown below?

The light-producing element in a fluorescent bulb is the

a ball is fired vertically into the air. Its height in feet t seconds later is given by the formula: h (t) = - 2t^2+80t a) what is the height of the ball after 3 sec? b) what is the velocity of the ball after 5 sec?

What percent of the energy used in the United States comes from burning fossil fuels?

When can a truck have less momentum than a bike? A. only when the truck is not moving B. only when it's moving faster than the bike C. only when it's moving more slowly than the bike D.

How does the pressure of an ideal gas at constant volume change as the temperature increases?

Which of the following can be thought of as either a wave or a particle? a. light b. an electron c. a proton d. all of the above

Universal law in effect at all times?

Elements in an blank or blank of the periodic table have similar characteristics

A pendulum is raised 1.5 cm and allowed to fall. if air resistance is negligible, how high will the pendulum rise on the other side?

In which of the following situations or place would you want to reduce the force of friction (multiple answers) A.) moving your mouse along the mousepad B.) the axle of your car wheels while you are driving C.) you are climbing a steep ladder D.