What must be true about two objects for conduction to take place?

A tradesman sharpens a knife by pushing it against the rim of a grindstone. The 35 cm diameter stone is spinning at 200 rpm and has a mass of 28 kg. The coefficient of kinetic friction between the knife and the stone is 0.20.

Dimensional formula of elasticity

Which of the following is a colligative property? A. viscosity B. solubility C. surface tension D. osmotic pressure

Which statement about ammeters and voltmeters is true? A. Current and voltage are the same throughout a circuit so where you place the ammeter and voltmeter doesn't matter. B.

A 76 kg pilot at an airshow performs a loop de loop with his plane. at the bottom of the 52-m radius loop, the plane is moving 48 m/s. determine the normal force acting upon the pilot.

What are two possible uses of genetic engineering

How many joules are expended by a 70 kg man climbing up 6m of stairway? How much work is done if the climbing takes place on the surface of the moon? (Assume that the acceleration due to gravity on the moon's surface is 1.6 m/s2

A baseball flying through the air has kinetic energy because of its motion. true or false?

How many poles does Jupiter's magnetosphere have? a. 2 c. 8 b. 4 d. 9

Which describes nuclear fusion? The nuclei of two atoms combine to form a larger nucleus. The nucleus of one atom splits to form two smaller nuclei. The electrons of two atoms combine to form a cluster of electrons.