Determine the distance between centers of two planets whose masses are 1.1 x 10^24 kg and 1.4 x 10^21 kg and the force of gravity that one
planet feels due to the other is 2.2 x 10^20 Newtons. *

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?

How to tell if two objects are in thermal equilibrium 1.the objects have the same temperature 2.the objects are the same size 3.the objects are touching each other 4.the objects temperatures are changing