A 85.0 kg skateboarder starts from rest at the top of a hill 300. meters in length at an angle of 7.00 degrees. The wheels and the air produce 70.0 N of friction. Find the speed of the skateboarder at the bottom of the hill. a Answer value

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

15.3 cos 65 degrees trig

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.