What happens to the velocity of a sound wave in air if the temperature of the air increases?

A

velocity increases

B. velocity does not change

DC. velocity decreases

OD. velocity drops to zero

Air has pressure because a. the stratosphere is thick b. air has mass c. wind moves the air d. temperature warms the air

A vertical rectangular wall with a width of 20 m and a height of 12 m is holding a 7-m-deep water body. The resultant hydrostatic force acting on this wall is (a) 1370 kN (b) 4807 kN (c) 8240 kN (d) 9740 kN (e) 11,670 kN

What is the force between two charged objects

Which part of a mountain would have the lowest temp?

If you are travelling in your Bugatti at 45 m/s (about 100 mi/hr) and step on the brakes, creating an acceleration of - 12.5 m/s^2. How far do you travel before stopping? How far would it be if you were only travelling 22.

You are operating a powerboat at night. You see green and white lights on another boat. What should you do?

How does Newton's second law apply to an "Egg Drop" experiment?

A 4.0-n puck is traveling at 3.0 m/s. it strikes an 8.0-n puck, which is stationary. the two pucks stick together. their common final speed is:

What career has to do with one of these listed ... fossil fuels, nuclear energy, biomass, hydropower, solar energy, geothermal energy, or wind energy.

An object is suspended from the ceiling with two wires that make an angle of 40° with the ceiling. The weight of the body is 150 N. What is the tension in each wire? 41.6 newtons 82.3 newtons 150 newtons 117 newtons