1. Suppose that two point charges, each with a charge of +1 Coulomb are separated by a distance of 1 meter. (a ) Will they attract or repel ?(b) Determine the magnitude of the electrical force between them.

The total amount of energy contained in an object

You have been hired to design a spring-launched roller coaster thatwill carry two passengers per car. the car goes up a 10-m highhill, then descends 15m to the track's lowest point. you'vedetermined that the spring can be compressed a maximum o 2.0m andthat a loaded car will have a maximum mass of 400kg. for safetyreasons, the spring constant should be 10% larger than the minimumneeded for the car to just make it over the top. a) what spring constant (k) should you specify ? b) what is the maximum speed of a 350 kg car if the spring iscompressed the full amount.

Acid rain is caused by human activity. select the best answer from the choices provided t f