Which change would result in a stronger electromagnet?

A) Reducing the number of batteries

B) Increasing the voltage of the battery

C) Substituting another metal for the iron core

D) Decreasing the number of coils around the iron core.

Phils mass is 90 kg experiences 200N of air resistance. What is the acceleration of his fall?

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A bullet is fired vertically upward from a gun with an initial velocity of 225 m/s. How high does the bullet go in meters? [Ignore air resistance]

If the astronaut throws the tool with a force of 16.0 n, what is the magnitude of the acceleration a of the astronaut during the throw? assume that the total mass of the astronaut after she throws the tool is 80.0 kg.

How does the energy of an electron change when the electron moves closer to the nucleus? a. It doubles. b. It increases. c. It decreases. d. It stays 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?