How fast must a 4 kg ball be thrown vertically upward so that it achieves a potential energy of 631 Joules. (g

Which body is in equilibrium? (1) a satellite orbiting earth in a circular orbit (2) a ball falling freely toward the surface of earth (3) a car moving with a constant speed along a straight, level road (4) a projectile at the highest point in its trajectory

Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.

2select the correct answer. javed suffers from a severe food allergy. which device should javed always carry? a. inhaler b. epi pen c. nebulizer d. insulin pen