There are 2 properties of objects which combine to create a stable orbit of one object around the other. One of the properties is the graviational force between the 2 objects. The other vital property for a stable orbit is . options:

the electromagnetic force between the 2 objects.

the density of the smaller object.

the volume of the smaller object.

the velocity of the object in the orbital path.

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.