A light beam approaches a plain mirror at an incident angle of 39

degrees. What is the angle of reflection?

A 111 kg horizontal platform is a uniform disk of radius 1.73 m and can rotate about the vertical axis through its center. A 66.9 kg person stands on the platform at a distance of 1.17m from the center, and a 25.

which has a greater kinetic energy, a bowling ball that has a mass of 5kg travelling at 6m/s, or a ship that has a mass of 120000kg and is moving at 0.02m/s?

Which title best reflects the main idea of the passage? The Role of Convection in the Distribution of Earth's Energy The Role of Heat Transfer Methods in the Distribution of Earth's Energy Conduction, Convection, and Radiation: Methods of Heat

Action at a distance, such as is the case for gravity, was once thought to be illogical and therefore untrue. What is the ultimate determinant of the truth in science, and why was this action at a distance ultimately accepted?

Mp3 player at maximum volume 110db

Whats an example of projectile motion

The fact that the sun rises and sets at different times during the day depending on the time of year is an example of a data trend. True or False

What sample of matter is a single substance

What is a hydraulic machine and what is its purpose? Explain how a simple hydraulic machine performs work.

Is the muzzle velocity a scalar or vector quantity?