What temperature is required to transfer waste heat to the environment for a heat engine to be 100 percent efficient?

a) 0°C

b) 0 K

c) 273 K

d) 212°F

Diamond has an index of refraction of 2.419. What is the critical angle for internal reflection inside a diamond that is in air? A) 155° B) 105° C) 48.8° D) 24.4° E) 131°

6. A 73-kg woman stands on a scale in an elevator. The scale reads 810 N. What is the magnitude and direction of the elevator's acceleration? A. 0.23 m/s2 up B. 1.3 m/s2 up C. 6.5 m/s2 down D. 11 m/s2 down

What is the momentum of a 1300-kg car traveling with a speed of 33 m/s?

When two frequencies are added together, the beat frequency and the average frequency are an octave apart?

Absolute differences between each observed mass and the accepted value, divided by the accepted value, multiplied by 100%

An atom with 19 protons and 18 neutrons is an

Where does the "2" come from in the expression for paverage? why is there no time dependence? } questions 55 - 56 consider alternating current. 55.

Indicate whether the statement is true or false. A scientific fact is something that is absolute and unchanging.

What is common to all light sources, including incandescent, fluorescent, neon, halogen, laser, and sodium-vapor devices?

Total peripheral resistance is related to all of the following except the