How do you make a electromagnet repel medal

Which statements describe diffraction? Check all that apply. Diffraction occurs when waves interact with a barrier. Diffraction occurs because waves pass into a new medium. Diffraction occurs when waves interact with a gap.

List the following events in the order that they happen as a sound wave is generated and transmitted through the air. 1. The object's energy transfers to the surrounding air particles. 2. Something causes an object to vibrate. 3.

An ideal gas is maintained at a constant pressure of 70,000 Pa during an isobaric process and its volume decreases by 0.2m^3. What work is done by the system on its environment? a. 14,000 Jb. 350,000 Jc. - 14,000 Jd. - 35,000 J

Which statement best describes how today's scientific community views light? Light behaves only like waves. Light behaves only like particles Light behaves like both waves and particles.

What made Aristotle's idea of matter differ from that of scientists?

Un móvil parte del reposo y, al cabo de 5 s, alcanza una velocidad de 5 m/s; a continuación, se mantiene con esa velocidad durante 4 s, y en ese momento frena uniformemente y se detiene en 3 s.

A 2.0-kilogram mass is located 3.0 meters above the surface of Earth. What is the magnitude of Earth's gravitational field strength at this location? (1) 4.9 N/kg (3) 9.8 N/kg (2) 2.0 N/kg (4) 20. N/kg

How long did the astronauts stay on the moon?

Brenda is standing on the beach; the sea is choppy. she observes that the crests of distant waves appear not only smaller, but also closer together than do the crests of waves nearer the beach. this example illustrates a depth cue known as:

If two waves in the same space interfere completely destructively, which of the following occurs? A. The amplitude decreases. B. The amplitude increases. C. The wave speed increases. D. The wave speed decreases.