Recent content by jojo14

I just need help on how to solve these problems. I am so confused with the directions that i just don't get it... 1) A long straight wire is aligned north-south and carries current in the northerly direction. What is the direction of the magnetic field created directly abvove the wire...

Earth's gravitational field is 7.95 N/kg at the altitude of the space shuttle. What is the size of the force of attraction between a student of mass 48.9 kg and Earth? answer in units of N. please help, i don't get how to do this! thanks..

An astronaut on a newly discovered planet wants to determine the acceleration due to gravity. In his experiment, he fires a small cannon from the edge of a mesa that is 125m high. The initial horizontal velocity of the cannon ball is 64m/s. The projectile travels 261m horizontally before it...

oh, ok thanks i got it from here. :]

a dart player, standing 3.2m away from the darboard... thorws a dart horizontally... A dart player, standing 3.2m away from the dartboard, throws a dart horizontally at a speed of 12.4m/s. How far from the bull's eye(where the player aimed) did the dart stirke? Answer: dy=0.326m (give a...