A television advertisement claiming that a product is light-years ahead of its time does not make sense because
A) it doesn't specify the number of light-years.
B) it uses "light-years" to talk about time, but a light-year is a unit of distance.
C) a light-year is an astronomically large unit, so a product could not possibly be so advanced.
D) light-years can only be used to talk about light.
B
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A 100.0 kg mass is blown apart into a 95.00 kg piece and a 5.000 kg piece. After the blast, the two masses are moving apart with a relative velocity of 100.0 m/s. The kinetic energy of the 95.00 kg mass after the explosion is
A. 1,190 J. B. 8,600 J. C. 18,750 J. D. 22,560 J. E. 23,750 J.
A given mass of gas is enclosed in a suitable container so that it may be maintained at constant volume. Under these conditions, there can be no change in what property of the gas?
A. Pressure B. Density C. Molecular kinetic energy D. Internal energy E. Temperature
Your radio is tuned to 98 on the FM dial. What electromagnetic wave frequency is your radio receiving, and how fast is this wave traveling?
A) 98 × 106 Hz, at the speed of sound B) 98,000 Hz, at the speed of sound C) 98 Hz, at a speed of 300,000 km/s D) 98,000 Hz, at a speed of 300,000 km/s E) 98 × 106 Hz, at a speed of 300,000 km/s
The observed composition of ordinary matter in the universe—roughly 75 percent hydrogen and 25 percent helium—closely matches theoretical predictions based on the Big Bang model
Indicate whether the statement is true or false