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Questions in physics

[Answered] A mechanical wave moves through a medium, which can be: A. a solid B. a liquid C. a gas D. all of the above

[Answered] You have the numbers 1–25 written on slips of paper. If you choose one slip at random, what is the probability that you will select a number that is divisible by 3?

[Answered] Amusement parks are a great place to see Newton's laws of motion in action. Choose your favorite ride and describe the parts of the ride that illustrate each of Newton's laws of motion.

[Answered] What are the forces acting on a falling leaf?

[Answered] Explain how objects can have the same volume but different mass.

[Answered] Which of the following is an example of pure research? A. Creating new elements to study their properties B. Producing plastics that are heat-resistant to use in ovens C. Determining how to reduce rusting on metal ships and cargo carriers D. Finding alternatives to gasoline to fuel transportation vehicles

[Answered] A person opens a door by applying a 10-N force perpendicular to it at a distance of 0.90 m from the hinges. What is the torque applied to the door?

[Answered] A current-carrying wire wrapped around an iron core is called a(n) _________.

[Answered] Which of the following occurs when the strength of the current flowing through a wire is increased? A. The direction of the field changes. B. The magnetic force is created. C. The magnetic field is increased. D. The magnetic field is decreased.

[Answered] What pressure, in millimeters of mercury (mm Hg), is equivalent to 2.13 atmospheres?