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

degrees. What is the angle of reflection?

The total potential and kinetic energy of all the microscopic particles in an object make up its A. chemical energy. B. thermal energy. C. electric energy. D. nuclear energy.

A bottle dropped from a balloon reaches the ground in 20 s. determine the height of the balloon if (a) it was at rest in the air and (b) it was ascending with a speed of 50 m/s when the bottle was dropped.

The planet should move around the elliptical orbit, and two segments of the orbit should become shaded in green. What aspect (s) of the orbit and shaded segments are the same?

How much heat is absorbed by a 31g iron skillet when it's tempature rises from 8c to 81c

A tornado warning means that the current weather conditions could produce a tornado. True or False

Summarize Newton's First Law

13. How is 0.00069 written in scientific notation? A. 69 x 10-5 B. 6.9 x 104 C. 0.69 x 10-3 D. 6.9 x 10-4

A 1300 kg sports car accelerates from rest to 95 km/h in 7.4 s. What is the average power delivered by the engine?.

Two children playing on a frictionless garden gate invent a new game called "gate". The idea is that they will get on opposite sides of the gate and each push such that the gate does not move.

What is the frequency of 20 mm microwaves? A) 100 MHz B) 400 MHz C) 15 GHz D) 73 GHz E) 98 GHz