Amotorist pulled over for running a red light claims that because, of his speed, the 630 nm red light appeared to be 530 nm green light. the traffic cop, who happens to have a physics degree, cites the motorist both for running the red light and for another traffic violation. what is the other traffic violation? your answer should be supported by a quantitative calculation with a correct result.

After the near spacecraft passed mathilde, on several occasions rocket propellant was expelled to adjust the spacecraft's momentum in order to follow a path that would approach the asteroid eros, the final destination for the mission. after getting close to eros, further small adjustments made the momentum just right to give a circular orbit of radius 45 km (45 × 10^3 m) around the asteroid. so much propellant had been used that the final mass of the spacecraft while in circular orbit around eros was only 545 kg. the spacecraft took 1.04 days to make one complete circular orbit around eros. calculate what the mass of eros must be.

An artificial satellite circles the earth in a circular orbit at a location where the acceleration due to gravity is 6.03 m/s^2. determine the orbital period of the satellite.

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.