If you leave the refrigerator door open in a closed room, the room temperature will
A) increase.
B) decrease.
C) be unaffected.
Answer: A
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Diffraction Gratings: When a diffraction grating having 5000 lines/cmis illuminated by monochromatic light, the angle between the central maximum and the fourth order maximum is 47.2°. What is the wavelength of the light?
A. 138 nm B. 183 nm C. 367 nm D. 637 nm
A cube-shaped box is sitting on the floor. The pressure the box exerts on the floor is 235 Pa. If the density of the box is 21.0 kg/m3, what is the length of each side of the box?
a. 0.00910 m b. 1.14 m c. 110 m d. 11.2 m
Which one of the following lists gives the correct order of the electromagnetic waves from longer wavelength to shorter wavelength?
A) radio waves, infrared, microwaves, ultraviolet, visible, x-rays, gamma rays B) radio waves, ultraviolet, x-rays, microwaves, infrared, visible, gamma rays C) radio waves, microwaves, visible, x-rays, infrared, ultraviolet, gamma rays D) radio waves, microwaves, infrared, visible, ultraviolet, x-rays, gamma rays E) radio waves, infrared, x-rays, microwaves, ultraviolet, visible, gamma rays
In Galileo's thought experiment about rolling balls, Galileo argued that:
a. a ball rolling up the tilted surface speeds up. b. a ball rolling down the tilted surface slows down. c. a ball rolling on a level surface speeds up. d. a ball rolling on a the level surface continues at the same speed. e. a ball rolling on a level surface slows down.