A singer raises his pitch one octave. what quality of the sound wave has changed? the frequency has increased. the wavelength has increased. the amplitude has increased. the speed has increased.

Why dont all particles of a substance have the same kinetic energy?

The power of a machine mesures

What is the wavelength of a proton traveling at a speed of 6.21 km/s? what would be the region of the spectrum for electromagnetic radiation of this wavelength?

Particle A of charge 3.06 10-4 C is at the origin, particle B of charge - 5.70 10-4 C is at (4.00 m, 0), and particle C of charge 1.08 10-4 C is at (0, 3.00 m). We wish to find the net electric force on C.

A rocket ship leaves the Earth's atmosphere. Its initial velocity is less than its final velocity. Which is this an example of

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?