Atest charge is introduced into the electric field of a charge. it feels a force of 2f where the electric field is 2e. what would the force on the test charge be where the electric field is 8e? somebody explain how you would get the answer.

Which instrument is used to measure air temperature

When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?