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Questions in physics

[Done] What effect does adding more loops to the wire coil have on the electromagnet?

[Done] When a net force of 17.0 newtons is applied to a dictionary placed on a frictionless table, it accelerates by 3.75 meters/second². What is the mass of the book?

[Done] Why does an object traveling in a circle at a constant speed always accelerate?

[Done] The chemical formula for water, H₂O, means that each water molecule contains: A. Two hydrogen atoms B. One oxygen atom

[Done] Now let's look at a skydiver who jumps out of a plane that has a forward velocity of 40 m/s. Ignore air resistance. After 1 second, what is the skydiver's forward velocity?

[Done] Aristotle, the ancient Greek philosopher, thought that heavy objects fall to Earth faster than lighter objects. How could Aristotle's hypothesis be supported or disproved?

[Done] What phase of matter is unable to transfer heat by convection?

[Done] What happens when electrical energy is used to power stereo speakers? A. Energy is neither lost nor gained as electrical energy is transformed into the energy of sound. B. Energy is gained as electrical energy transforms into the energy of sound. C. Energy is lost as electrical energy transforms into the energy of sound. D. Energy is neither lost nor gained as sound energy transforms into electrical energy.

[Done] What has more momentum: a baseball traveling at 4 m/s or a baseball traveling at 16 m/s? Which has more energy?

[Done] Could you give me four examples of acceleration?