Suppose you are sitting at the origin of an inertial reference frame. You see (that is, you receive the light from) an event E occurring near a clock at x = -30 ns at a time t = 80 ns. When do you observe that event to occur?
A. tE = 0
B. tE = 30 ns
C. tE = 50 ns
D. tE = 80 ns, of course
E. tE = 110 ns
F. Some other time (specify)
C. tE = 50 ns
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The processes of giant-planet migration and the formation of the Oort Cloud caused the Uranus to move both inward and outward in the solar system. Which motion was most important? Why?
What will be an ideal response?
A rocket of length 80 m sits on a launch pad. The center of mass of the rocket is located 32 m above the ground. The rocket is launched to an altitude of 100 km. Where is the location of the center of mass of the total rocket-fuel system at the altitude of 100 km?
A. at ground level B. 32 m above ground level C. 40 m above ground level D. 80 m above ground level E. 50 km above ground level
When examining the electrical and thermal conductivity of a metal, you find that only the "conduction" electrons truly contribute to these conductivities. Choose the statement below that most specifically details the property of atomic electrons that allows them to become conduction electrons and to contribute to these conductivities
Power: The net force that an animal exerts on a large fruit it has found is observed over a 10-s interval and is shown in the graph in the figure. What was the average power delivered to the fruit by the animal over this time interval?
A. 0.00 W B. 1.3 W C. 2.5 W D. 2.2 W E. 5.0 W