2. You decide to flip a coin to determine whether to do your physics or English homework first. The coin is flipped straight up. a. What is the velocity of the coin at the top of its trajectory? 0m/s
b. If the coin reaches a high point of 0.25 m above where you released it, what was its initial speed?
c. If you catch it at the same height as you released it, how much time did it spend in the air?

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc