How do musical instruments vary pitch

If i were to produce a louder sound, what part of the wave would be affected? Would the size be increasing or decreasing?

A collision in which kinetic energy is transferred only as kinetic energy from one object to another and is not converted in any other amount to any other form of energy A static friction. B kinetic energy C elastic collision D bouyant force

Which of the following organisms would most likely be found at the top of a food web? a Flowers b Bees c Birds d Foxes

A skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 7.1° with the horizontal. The rope moves parallel to the slope with a constant speed of 0.60 m/s.

A motorboat and a pwc are meeting head-on. which one is the stand-on vessel?

What are the steps that produce electricity from this fuel

Adrian read about a new antimicrobial in a popular magazine. The advertisement claimed that the product Bactokil prevents bacterial growth. So, Adrian conducted a controlled experiment to test the product claims.

A world-class sprinter can burst out of the blocks to essentially top speed (of about 11.5 m/s) in the first 15.0 m of the race. what is the average acceleration of this sprinter, and how long does it take her to reach that speed?

How are primary and secondary succession similar and how are they different?

What relates the net force exerted on an object to its mass and acceleration?