How are electromagnetic waves different from sound waves?

Which method would be best to separate a mixture of iron and lead pellets (of the same approximate diameter) ?

A tennis player receives a shot with the ball (0.0631 kg) traveling horizontally at 53.7 m/s and returns the shot with the ball traveling horizontally 40.5 m/s in the opposite direction. a. What is the impulse delivered to the ball by the racquet? b.

In charging by rubbing, electrons move from one material to another because A. substances with very few neutrons have a net positive charge, so they get the extra electrons. O B. heavier substances get rid of electrons so they don't weigh as much.

How does the distance from an eye chart affect the number of letters that are recognized on a line

A spacecraft is in empty space. it carries on board a gyroscope with a moment of inertia of ig = 18.5 kg m2 about the axis of the gyroscope. the moment of inertia of the spacecraft around the same axis is is = 5.00 105 kg m2.

Will make Brainlest! <3 Metals are considered to be good conductors of heat. How do the specific heat values indicate this?

Which example identifies a change in motion that produces acceleration? choices are: 1. a speed skater moving at a constant speed on a straight track 2. a ball moving at a constant speed around a circular track 3.

Which of the following diagnostic procedures uses ultrasound?

Why is it easier to read black text on a white background than to read green text of any light color?

If object A has more mass than object B, does object A contain more matter? Explain.