What happens when two waves hit each other

How do frequency, amplitude, and wavelength affect interference between two waves?

Which are examples of negative feedback? Check all that apply

Find the magnitude of the gravitational force exerted by the sphere and spherical shell on a particle of mass 7 kg located at a distance 1.49 m from the center of the sphere and spherical shell. Answer in units of N.

A block and tackle pulley system, such as the one below, multiplies the effort force that is put into the system. By how much would the block and tackle system below mulitply the effort force?

An electric motor moves a chain that pulls the roller coaster car 180 meters to the top of the first hill. The chain exerts a force of 2,524 newtons on the car.

Explain the work-energy theorem, including the direction energy moves and how it relates to positive and negative work

The passing of heat through a material while the material itself stays in place. A. radiation B. conduction C. convection

What would result from under-coverage? A. a lack of accurate result B. an incorrect independent variable C. an experiment D. accurate result

What can be said about the force of gravity acting on an object that is floating stationary underwater and not moving up or down? A. The buoyant force equals the force of gravity, so there is no net force. B.

A frog in a hemispherical pod finds that he just floatswithout sinking in a fluid of density 1.25 g/cm3. If the pod has a radius of3.00 cm and negligible mass, what isthe mass of the frog?