Calculate the speed of a satellite moving in a stable circular orbit about the earth at a height of 4000 km from the surface of the earth (the mass of the earth is 5.97×1024 kg and the radius of the earth is 6.38×106 m).

Suppose that three astronomical objects, 1, 2, and 3 are observed to lie on a line, and the distance from object 1 to object 3 is d. object 1 has four times the mass of object 3, and seven times the mass of object 2. find the distance between objects 1 and 2 for which the net force on object 2 is zero.

Why are nonmetals more likely to react with eachother by sharing electrons

Suppose the house in question 3 is located in cleveland where the annual average solar flux is 160 w/m2 . if 10 m2 of solar panels operating at 20 percent efficiency were installed on this house to collect and store solar energy in the form of hot water: