If a spaceship travels near the speed of light away from the Earth, an observer on Earth would see the length of the spaceship ________
Fill in the blank(s) with correct word
shrink
You might also like to view...
What type of galaxies do astronomers believe to be the most common?
a. elliptical b. spiral c. irregular d. Astronomers have no idea which type of galaxy is most common.
The energy required to ionize a hydrogen atom whose electron is in the ground state (energy level 1 ) is:
A) 10.2 eV. B) 12.1 eV. C) 12.75 eV. D) 13.1 eV. E) 13.6 eV.
In Joule's paddle-wheel experiment (shown here), why won't the weight rise when we heat the water?
a. The random motion of water molecules hitting both sides of each paddle wheel does not result in a net force on one side of each paddle. b. Energy conservation would be violated because no external force is applied. c. The heat supplied by the flame does not provide sufficient energy to raise the weight.
Which is a reasonable restatement of the second law of thermodynamics?
a. The orderliness of the universe increases. b. All heat engines exhaust heat to their surroundings. c. Force equals mass times acceleration. d. Single-temperature heat engines can be built. e. Heat sometimes flows spontaneously from colder to warmer objects.