A proton moves eastward in a region of space where a uniform magnetic field points north and has a magnitude of 5.0 ✕ 10-5 T. What velocity must the proton have for the magnetic force to just cancel the gravitational force?

If you want to change the pitch of a sound, you have to change the

If a stone with an original velocity of 0 is falling from a ledgeand takes 8 seconds to hoybthe ground whays the final velocity of the stone

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )