How much electrical energy is used by a 75 W laptop that is operating for 12

minutes?

How do the units of work and power compare? The unit for work is a watt. The unit for power is a joule, which is a watt-second. The unit for work is a watt. The unit for power is a joule, which is a watt per second. The unit for work is a joule.

Describe the shape of a straw in water

What type of potential energy allows you to throw a ball

Q) How is a conductor different from an insulator. A) A Conductor contains free electrons. B) A conductor contains free protons. C) A conductor contains an equal number of free electrons and free protons.

Which best compares freezing and condensation? a. Both involve changes between liquids and gases. b. Both involve changes between gases and solids. c. Both involve the release of heat. d. Both involve the absorption of heat.

Describe the possible long term impact of a catastrophic event

Calculate the mass defect of the helium nucleus 42He. The mass of neutral 42He is given by MHe=4.002603u.

A transparent film laminated to a fabric is identified in the study material as a. stretch fabric. b. PVC. c. a skin. d. two-faced fabric

Technician A says that all friction and steel plates in a clutch pack should be replaced during and overhaul. Technician B says that the automatic transmission fluid cooler should always be flushed when a unit is rebuilt or replaced.

Cold water (cp = 4180 J/kg·K) leading to a shower enters a thinwalled double-pipe counterflow heat exchanger at 15°C at a rate of 1.25 kg/s and is heated to 60°C by hot water (cp = 4190 J/kg·K) that enters at 100°C at a rate of 4 kg/s.