If a star 100 light-years away explodes, the time for the gravitational waves to reach Earth is 100 years as measured from
A) any uniformly moving reference frame.
B) any accelerating reference frame.
C) any reference frame, accelerated or not.
D) the reference frame of the waves.
E) Earth.
Answer: E
You might also like to view...
The energy that flows in a sound wave is:
1.kinetic energy only. 2.potential energy only. 3.both kinetic and potential energy. 4.heat energy. 5.thermal energy. 6.all of the above.
All main-sequence G stars have approximately the same mass
Indicate whether the statement is true or false
A 5.0-? resistor and a 9.0-? resistor are connected in parallel. A 4.0-? resistor is then connected in series with this parallel combination. An ideal 6.0-V battery is then connected across the series-parallel combination of the three resistors
What is the current through (a) the 4.0-? resistor? (b) the 5.0-? resistor? (c) the 9.0-? resistor?
Why is the air over an open flame always moist?
A) The hot flame vaporizes the water in the air above the flame. B) One of the products of combustion is water vapor. C) Warm air contains more humidity than cold air. D) None of the above is true.