Sound wave A delivers 2 J of energy in 2 s. Sound wave B delivers 10 J of energy in 5 s. Sound wave C delivers 2 mJ of energy in 1 ms. Rank in order, from largest to smallest, the sound powers of Pa, Pb, Pc of these three waves.

It is a common practice to put oil in a car and to change the car's oil once in while. Why do cars need oil

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?

Suppose there is a policy debate over whether the United States should impose trade restrictions on imported steel rods: Domestic producers of steel rods send a lobbyist to the U. S.

Definition of mechanical weathering

Which of the following is an example of a material that allows electrons to easily move through it? Conductor Neutral Insulator A charged material

A rock is thrown from a cliff and hits the ground five seconds later at a distance of 50 m from the cliff how high was a cliff

A 15.0 m long plane is inclined at 30.0 degrees. If the coefficient of friction is 0.426, what force is required to move a 40.0 kg mass from rest at the bottom on the plane to the top of the plane with a final velocity of 8.00 m/s?

In a pig-calling contest, a caller produces a sound with an intensity level of 60 db. how many such callers would be required to reach the pain level of 120 db? 2 incorrect: your answer is incorrect.

Why is the use of scientific names important in biology?

1) what is a calorie?