Magnets will each other when poles are facing.
a. attract, like
c. repel, like
b. repel, unlike
d. none of the above

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)