Kids are pelting a window with snowballs. On average, two snowballs of roughly 300-g mass hit the window each second, moving horizontally at some 10 m/s. The snowballs drop vertically to the ground after hitting the window.

Required:
Estimate the average force exerted on the window.

Blank liquids and gases exert a buoyant force on objects placed in them

Apair of 10μf capacitors in a high-power laser are charged to 1.7 kv.a. what charge is stored in each capacitor? b. how much energy is stored in each capacitor?

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?