Most people can detect frequencies as high as 20 000 Hz. Assuming the speed of sound in air is 345 m/s, determine the wavelength of the sound corresponding to this upper range of audible hearing.

You do work on something when you lift if against gravity. Explain how work relates to gravitational potential energy using at least two complete content related sentences. If the lifted object is released, describe the change in energy.

When atoms are split, they release energy. this concept applies to

Which of these would have particles with the highest kinetic energy

Which of the following is a true statement? Rivers are not considered landforms. Plateaus are not considered to be landforms. Not all mountains are considered to be landforms. Not all volcanoes are considered to be landforms.

A man is pushing a piano across the floor. What four forces are acting on the piano?

In a classroom, why can we hear the sound waves produced by the teacher talking?

What is the general defination of parallax?

Change in speed over a given period of time is

A car takes 15 minutes to travel along a road that is 20 km long. What is the average speed of the car? A. 75 km/h B. 5.0 km/h C. 80 km/h D. 300 km/h

A 4.2 cm diameter circular loop of wire is in a 1.14 T magnetic field. The loop is removed from the field in 0.18 s. Assume that the loop is perpendicular to the magnetic field. What is the average induced emf?