Which materials are the best thermal insulators?

a) metals

b) solids

c) liquids

d) gases

A 580-mm long tungsten wire, with a 0.046-mm-diameter circular cross section, is wrapped around in the shape of a coil and used as a filament in an incandescent light bulb. When the light bulb is connected to a battery, a current of 0.

A photon with a wavelength of 2.29 * 10^-7 meter strikes a mercury atom in the ground state. Determine the energy, in electronvolts, of this photon.

What are the five practices in scientific inquiry

Doorknob larger radius than shaft, why?

A flashing light is controlled by a charging and discharging of an RC circuit. If the light is flashing too rapidly, describe two changes that you could make to the circuit to reduce the flash rate.

Sara is sitting in the back seat as her father drives at a constant speed. If Sara's father presses on the brakes quickly slowing the car down, what slows Sara down? A. air resistance on the inside of the car B.

A box of books has lessequalmore inertia than a box of cotton balls.

A penny is placed on a rotating turntable. Where on the turntable does the penny require the largest centripetal force to remain in place? Give your reasoning.

Is the temperature of a normal healthy old man is less than that of a normal healthy young man?

What does the second law of thermodynamics say about entropy apex?