A person yells at a canyon wall 200 m away. How long after they yell will they hear their echo

If the medium moves perpendicular to the direction of the wave motion, the wave is classified as a longitudinal wave. True or False?

A ramp is a simple machine called the a. wedge b. pulley c. inclined plane d. lever

A locomotive is pulling 11 freight cars, each of which is loaded with the same amount of weight. The mass of each freight car (with its load) is 37,000 kg. If the train is accelerating at 0.

Where are some of Earth's youngest rocks found? A. high in the Himalayas B. deep within ocean trenches C. at seafloor spreading centers D. at convergent plate boundaries

Write the names of the metalloids in order from lowest to highest atomic number.

The average speed of a runner who runs 500 m in 96 s is what?

What is the net force on a 2-kg skateboard accelerating at a rate of 2 m/s2?

Which is a consequence of the third law of thermodynamics

Difference between Heterozygous and homozygous?

A wave has a speed of 50 m/s and a frequency of 10 Hz. Calculate its wavelength.