The law of reflection states that if the angle of incidence is 78 degrees, the angle of reflection is ___ degrees.

Why is it so hard to see planets around other stars and so easy to see them around our own?

How much mass must an object have to gravitationally infuence another body?

A car of mass 900 kg drives around a circle with a centripetal acceleration of 2.1 m/s2. What is the centripetal force acting on the car?

Electrical metallic tubing would be used in an electrical installation because it

How many moles of oxygen are produced when 26.5mol of aluminum oxide are decomposed

Two firefighters are fighting a fire with identical water hoses and nozzles, except that one is holding the hose straight so that the water leaves the nozzle in the same direction it comes, while the other holds it backward so that the water makes a

What is the relationship between the mass of the counterweight and the amount of work done on the projectile?

The steps in the formation of sedimentary rocks are listed below in an incorrect order. 1. Rocks are weathered. 2. The sediments are compacted together. 3. They are deposited in layers. 4. Small pieces of rocks are carried by water.

Which method would you use to find the volume of an irregular shaped object?

A step up transformer has a primary coil with 100 turns and a secondary coil with 25 turns if the input voltage in the primary coil is 40 volts what is the output voltage reduced to in the secondary coil A) 20 volts B) 35 volts C) 4 volts D) 10