which of the following are good conductors under normal conditions? A. Penny B. copper wire C. a dime D. plastic E. aluminum foil F. water

Amy has a mass of 30 kg, and she is riding a scateboard traveling 5 m/s. what is her momentum?

A light ray is traveling in a diamond (n = 2.419). If the ray approaches the diamond-air interface, what is the minimum angle of incidence that will result in all of the light reflected back into the diamond? The index of refraction for air is 1.000.

A toy floats in a swimming pool. The buoyant force exerted on the toy depends on the volume of none of these choices. all the water in the pool. the toy under water. the pool.

The burning of 1.0 g of coal produces 35 000 joules of energy. How many kcals are produced?

Mark's uncle is about to have a procedure to treat his prostate cancer. The treatment involves placement of small pellets close to the tumor to deliver a localized dose of radiation.

Consider a 150-w incandescent lamp. the filament of the lamp is 5-cm long and has a diameter of 0.5 mm. the diameter of the glass bulb of the lamp is 8 cm.

According to Special Relativity, which statement is true: 1. The linear dimension of an object is the same in any two inertial systems 2. The linear dimension of an object is shorter in a system that uses two clocks 3.

which of the following are good conductors under normal conditions? A. Penny B. copper wire C. a dime D. plastic E. aluminum foil F. water

Which example involves the transformation of chemical energy directly into light energy? A) a wind mill B) a glow stick C) photosynthesis D) a hydroelectric dam (I'm pretty sure it's b, but just want to make sure)

What is heat? A. A measure of the movement of molecules inside an object B. The transfer of energy from a hot object to a cold object C. The force exerted on an area by an object D. A measure of mass per unit volume of an object