a marble rolls down the ramp and attains velocity of 1m/s if that falls from a height of 3m how far from the base of the ramp would you expect the marble to land

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?

What is a subatomic particle with a negative charge and very little mass?

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same