Does calm water have a regular reflection or a diffuse reflection

Harry is reading an online summary of the law of reflection. The site states that after light hits a mirror, the angle of reflection is the angle between the reflected ray and the normal, which is the surface of the mirror.

a fire truck drives 3 miles to the east, then 1.2 miles to the west. what is the displacement of the fire truck

A crane lift a cargo 10 m off the ground. If the the crane lifts the cargo box twice as high the potential energy will increase by

Which of the following is a property of an acid? Caustic Corrosive Decreases concentration of hydrogen ion Slippery feel

In an open system, the vapor pressure is equal to the outside air pressure. true false

Why is copper a pure substance

Over the course of a martian year, what are the ranges of the rms speeds of the co2 molecules.

Why is it important that all scientists use the metric system?.

Whay is moon non-lominous body

How many (whole number of) 91 kg people can safely occupy an elevator that can hold a maximum mass of exactly 1 metric ton? A metric ton is 1.000 * 103 kg. Answer in units of people.