Which circuit component usually acts as a switch or amplifier? O A. A transistor
O B. A capacitor
O C. A resistor
D. A battery

How much energy will be transferred to your eardrum while listening to this sound for 1.0 min?

If a car is traveling on the highway at a constant velocity, the force that pushes the car forward must be a. equal to the weight of the car. b. less than the force of friction exerted upon the car. c. equal to the force of friction exerted upon the car. d. greater than the weight of the car.

An object that weighs 75n is pulled on a horizontal surface by a horizontal pull of 50 n to the right. the friction force on this object is 30 n to the left. what is the acceleration of the object?