If a 10 N force is acting downward on an object and a 5 N force is acting upward. a. the object will move downward
b. the object will move upward
c. the object has a net force of 15 N
d. the object has a 15 N force downward
e. the object has a 15 N force upward

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

What happens to an isotope during radioactive decay?