For a ball that is thrown vertically upwards, what is the shape of the potential energy curve for the ball-earth system? - a downward sloping line. - a flat line that has a non-zero intercept. - it is a u-shaped parabola. - an upward sloping line that passes through the origin.

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?

In one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.