How can you increase the strength of an electromagnet?

The reciprocal of resistance or measure of a devices ability to conduct is called

A roller coaster has a vertical loop with radius 15.8 m. with what minimum speed should the roller coaster car be moving at the top of the loop so that the passengers do not lose contact with the seats?

What would be the result if the atmosphere was unable to move and exchange gases with Earth's other spheres? The temperature on Earth would remain warm and habitable. The wind would be a lot stronger due to the increase in the Coriolis Effect.

What type of energy is released when fossil fuels are burned? a. electrical energy b. nuclear energy c. kinetic energy d. chemical energy

A cosmic ray electron moves at 7.65 ✕ 106 m/s perpendicular to the Earth's magnetic field at an altitude where field strength is 1.10 ✕ 10-5 T. What is the radius (in m) of the circular path the electron follows?

Two boxes are suspended from a rope over a pulley. each box has weight 50 n. what is the tension in the rope

What happens when you put a galvanized zinc nail in copper solution for an hour? Does is rust or turn different color? What is the outcome? What happens after an hour in vinegar?

Psuedopod in a sentence

Study the scenario. As a spacecraft moves beyond Pluto, its thrusters are turned on for a short time to boost its speed to approximately 32,500 mi/h. The thrusters are then turned off.

What produces an electromagnetic wave? A) An oscillating or accelerating electric charge B) An electric charge moving at constant velocity C) A static electric charge D) A magnetic monopole moving at constant velocity