What’s the difference between the resistance of 1,000 feet of aluminum no. 14 wire and 1,000 feet of no. 14 copper wire? a. the aluminum has 0.84 ohms more resistance. b. the aluminum has 2.66 ohms more resistance. c. the copper has 0.59 ohms more resistance. d. the aluminum has 1.99 ohms more resistance.

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

Una carga puntual de 3 x 10-6 c se coloca a 12 cm de una segunda carga puntual de - 1,5 x 10-6 c. calcular la magnitud fuerza eléctrica entre las cargas

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?