What is an advantage of using coal power over solar power to generate electricity

What does the law of reflection mean?

Which are the most common producers in aquatic ecosystems? a - bacteria b - algae c - fish d - plants

A sound wave has a frequency of 684 Hz in air and a wavelength of 0.53 m. What is the temperature of the air? Assume the velocity of sound at 0◦C is 327 m/s. Answer in units of ◦C.

You visit the Grand Canyon on a particularly hot day, and like all good tourists, you yell "Hello!". Would you expect to hear the echo sooner or later than on a cooler day? Why?

I traveled 6.00 km to school in 0.250 hours. What was my average speed

Which of the following best illustrates chemical potential energy a dog Plane, gasoline gasoline, water moving down hill, a skydiver about to jump out of a plane

What are two ways to increase the acceleration of an object?

On the moon, all free-fall distance functions are of the form s (t) = 0.81t^2 where t is in seconds and s is in meters. An object is dropped from a height of 200 meters above the moon. After 9 sec, consider parts (a) through (d) below.

Why fan rotates in a clockwise direction and why not in a anti clockwise direction

If the force of gravity increases, which mearsurement will change and how? A.) weight decreases B.) mass increases C.) mass decreases D.) weight increases