You have a 1.55 kg block of silver at room temperature of 20 °C. Silver melts at 962°C. How much heat energy would be needed to just melt the silver? (Hf (silver) = 111 kJ/kg). Show all work. Answer:

on his fishing trip justin takes the boat 10km south the fish arent biting so he goes 4km back north he follows a school of fish 1km further north what distance did he cover

beam of light, traveling in air (the index of refraction for air is 1), strikes the surface of mineral oil at an ngle of 30° with the normal to the surface. (the index of refraction for this mineral oil is 1.

What is the mass of a pure platinum disk with a volume of 113 cm3? the density of platinum is 21.4 g/cm3

A parallel-plate capacitor is connected to a battery until it is fully charged. Then, teh capacitor is disconnected from the battery and connected to two uncharged parallel plates that make up a capacitor.

Which of the following depend upon the amount of matter in an object? Only its mass Only its weight Both its mass and its weight Neither its mass nor its weight

If you could see the electric field coming off a proton you would notice that electric field lines are

We wrap a light, nonstretching cable around a 10.0 kg kg solid cylinder with diameter of 38.0 cm cm. The cylinder rotates with negligible friction about a stationary horizontal axis. We tie the free end of the cable to a 14.

A 0.5kg baseball experiences a 10N force for a duration of 0.1s. What is the change in velocity of the baseball

A beam of light passes from air into a cube of zirconium if the angle of incidence is 40"what is the angle of refraction?

Which element combines chemically with sodium to form ordinary table salt? A) aluminum B) argon C) carbon D) chlorine