Through what media does mechanical waves move

One car travels east for 360 m over a period of 15 seconds. a second car travels west for 120 m over a period of 5 seconds. what is true about their speeds? their velocities?

What causes current to alternate in ac circuit

A maroon plane has a takeoff speed of 88.3 m/s and requires 1635 m to reach that speed. Determine the acceleration of the plane

A 60 kg rower is paddling a 30 kg canoe with a 2 kg paddle at a constant speed of + 10 m/s. If she loses her grip on the paddle and it flies backward with a velocity of - 20 m/s, what is the final momentum of the boat and rower?

Which of these parameters is directly related to sound frequency?

A hydrogen atom has one proton, two neutrons, and no electrons. Is this atom neutrally charged? Explain your answer.

A small rock with mass 0.12 kg is fastened to a massless string with length 0.80 m to form a pendulum. The pendulum is swinging so as to make a maximum angle of 45 ∘ with the vertical. Air resistance is negligible. A.

What does the model below represent? 200 + 02 → 2002

Efficiency of a standard 60 W lightbulb

1913.0-14.6 * 10^2= Give the answer in scientific notation