The resistance of a copper wire increases if it is heated and decreases if it is cooled. what will happen to a circuit made of copper wire if the temperature drops from 40°c to 20°c?
a. the current, voltage, and resistance will all increase.
b. the voltage and the resistance will remain constant.
c. the current will increase and the resistance will decrease.
d. the resistance will increase and the voltage will remain constant.

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?