A ball is thrown upward with a velocity of Vi. The ball reaches a height of 39 meters. Determine the initial velocity of the ball and the time of the entire trip.

If isomerization requires breaking the pi bond, what minimum energy is required for isomerization in j/mol?

A soap film is illuminated by white light normal to its surface. the index of refraction of the film is 1.50. wavelengths of 480 nm and 800 nm and no wavelengths between are intensified in the reflected beam. the thickness of the film is:

What force is needed to accelerate an object 5 m/s if the object has a mass of 10kg?

In fig. 2-27, a red car and a green car, identical except for the color, move toward each other in adjacent lanes and parallel to an x axis. at time t 0, the red car is at xr 0 and the green car is at xg 220 m.

A dump truck accelerates uniformly from a resting position to a velocity of 35 m/s north in 20 seconds. What is the displacement? a.) 1.75 m north b.) 61.25 m north c.) 350 m north d.) 700 m north

Suppose the initial kinetic energy and final potential energy in an experiment are both zero. What can you conclude?

Which of of the following is a physical change ice melting into a puddle of water, Leaves changing color in fall, Or baking a cake

An oxidation reaction requires which of the following for most common fires?

Change in sound vibration into electromagnetic waves is

Which componet of a loudspeaker produces soundwaves?