If a cart is accelerating downhill under a net force of 25 N, what additional force would cause the cart to have a constant velocity?

25 N

50 N

no additional force is needed

- 25 N

Identify the energy transformations in the following actions. *Turning on a space heater *Dropping an apple core into the garbage *Climbing up a rope ladder *Starting a car *Turning on a flashlight

Examples of a scalar

For the following series circuit, compute the power in R1, R2, and R3 if the circuit values are E = 24 volts, R1 = 8, R2 = 12, and R3 = 28.

During each cycle, a refrigerator ejects 610 kJ of energy to a high-temperature reservoir, and takes in 505 kJ of energy from a low-temperature reservoir. (a) Determine the work done on the refrigerant in each cycle.

The distance between neighboring singly charged sodium and chlorine ions in crystals of table salt (NaCl) is 2.82*10^-10m. What is the attractive electric force between the ions?

Is a lack of thorns a mutation? (on a plant)

Why is the motion of an athlete moving along the circular path with Constant speed considered to be an accelerated motion?

What is a characteristic of atoms

A doctor uses an instrument (s) that emits light and allows the doctor to view the inside of a patient's intestine. What is the doctor most likely using? - a telescope, a microscope, laser beams, or fiber optics

Find velocity gradient