Time Dilation: Someone in Earth's rest frame says that a spaceship's trip between two planets took 10.0 y, while an astronaut on the space ship says that the trip took 5.78 y. What is the speed of the spaceship, assuming the planets are at essentially at rest?
A. 0.816 c
B. 0.735 c
C. 0.975 c
D. 0.384 c
Answer: A
You might also like to view...
Exploration of this part of the atmosphere was conducted in the nineteenth century with hot-air balloons
a. Stratosphere b. Troposphere c. Mesosphere d. Thermosphere
An electron and a proton are each released from rest in the same uniform electric field. The electron moves a distance delectron and the proton moves a distance dproton as each particle's kinetic energy increases by 1.6 eV. How do delectron and dproton compare?
a. delectron > dproton b. delectron = dproton c. delectron < dproton d. The answer depends on the direction of the electric field.
What is the specific surface of a heat exchanger?
What will be an ideal response?
Opacity is
a. the balance between the pressure and force of gravity inside a star. b. the force that binds protons and neutrons together to form a nucleus. c. the force that binds an electron to the nucleus in an atom. d. a measure of the resistance to the flow of radiation (photons) through a gas. e. the temperature and density at which a gas will undergo thermonuclear fusion.