What materials in a torch are conductors and insulators?

If Janie does the same amount of work as Jose, but Janie does it faster than Jose, who produces more power?

A magnetic compass is placed near an insulated copper wire. When the wire is connected to a battery and a current is created, the compass needle moves and changes its position.

Does riding a bike up a hill in higher gear burn more calories than a lower gear

A traveling wave has displacement given by y (x, t) = (2.0cm) * cos (2πx-4πt), where x is measured in cm and t in s. what is the speed of the wave?

One 10.0 amp resistor is wired in a series with two 10.0 amp resistors in parallel. A 45.0 C battery supplies power to the circuit. What is the total current through the circuit?

How are mass and weight different? a. Mass is the space an object takes up and weight is the effect of gravity on mass. b. Mass is the amount of matter and weight is the effect of gravity on mass. c.

What were the discoveries of astronomers like Copernicus and Galileo?

A major obstacle to developing good human relations is that

4.) An apartment building is on fire and a guy is trapped on the fire escape ladder. There is a dumpster that is 6.3m away and is filled full of trash, and he is 7m above it.

Calculate the temperature of and power-per-area radiated from a blackbody if the spectral intensity density peaks at (a) gamma rays, λ = 1.50*10-14 m; (b) x rays, 1.50 nm; (c) red light, 640 nm; (d) broadcast television waves, 1.