A small smooth object slides from rest down a smooth inclined plane inclined at 30 degrees to the horizontal. What is (i) the acceleration

4 examples of soft rocks

The world's fastest elevator is in Taipei, Taiwan. It can lift passengers 1,010 m in 39 s. What is the speed of this elevator?

Why does fluid pressure exist?

A quantum system has three energy levels, so three wavelengths appear in its emission spectrum. The shortest observed wavelength is 218 nm; light with a 454 nm wavelength is also observed. What is the third wavelength?

What kind of friction exists between solid objects moving in water?

In a baseball game, a batter hits the 0.150-kg ball straight back at the pitcher at 180 km/h. If the ball is traveling at 160 km/h just before it reaches the bat, what is the magnitude of the average force exerted by the bat on it if the collision

The long, deep canyon running along the equator is called

Which of the following explains what is meant by the statement "scientific knowledge is universal"? The rules cannot be determined. The rules only apply in certain parts of the universe. The rules depend on experiments from different countries.

The force of friction on a sliding object is 10n. the applied force needed to maintain a constant velocity is:

Which of the following methods of improving air quality does not require advanced technology?