Aball rolls of a desk a speed of 3.0m/s and lands 0.40 seconds later

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

Asmall 12.00g plastic ball is suspended by a string in a uniform, horizontal electric field with a magnitude of 10^3 n/c. if the ball is in equilibrium when the string makes a 30 ° angle with the vertical, what is the net charge on the ball?