What must a magnet always have?

A. Two like poles

B. Two opposite charges

C. Two like charges

D. Two opposite poles

Assume that the complete combustion of one mole of stearic acid, a fatty acid, to carbon dioxide and water liberates 11400 kJ of energy (Δ?°′=-11400 kJ/mol).

Describe what might happen if Earth's magnetic field continues to lose strength.

Why is a block of gold more dense than a block of iron of equal size?

What is the net force acting on the child? 0 - 100 N O ON O100 N O 200 N

A clerk can lift cylindrical packages 1 meter vertically, or can roll them up a 2-meter-long ramp to the same elevation. With the ramp, the applied force required is aboutA. twice as much. B. half as muchC. four times as muchD. the same

The malfunction indicator light in an OBD II system is flashing. Technician A says that this simply indicates a soft failure. Technician B says this means the problem could be damaging the catalytic converter. Who is right? A. Technician A only B.

What are some methods humans have used to control flooding and what has been done to worsen the effects of flooding?

Suppose an electron is moving with a constant velocity until it encounters a positively charged sphere on its right. How does the sphere alter the trajectory of the electron? a. It has no effect on the trajectory of the electron b.

Most of the mass of the Milky Way exists in the form of: a.) starsb.) gasc.) dustd.) dark matter

A 55kg cart is pushed by a force of 225 n. what is the carts acceleration?