Chance has taken a metal rod and wrapped a wire around it and attached it to a battery. Chance's device can produce which two forces?A

electrical force and frictional force

B

electrical force and magnetic force

C

frictional force and gravitational force

D

magnetic force and gravitational force

Which of the following is not am example of a polymer? protein nylon kevlar concreta

Write a hypothesis about the effect of increasing resistance on the current in the circuit. use theformat and be sure to answer the lesson question. “how do changes in voltage or resistance affect current in an electric circuit? ”

Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.