How much energy is needed to power a 100-watt light bulb for 1 second?
A) 6000 joules
B) 100 joules
C) 1 joule
D) 100 watts
E) 6000 watts
B) 100 joules
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The orbits of halo stars are typically circular and have a low inclination with respect to the disk
a. True b. False Indicate whether the statement is true or false
Find the frequency of X-rays of wavelength 1 Å = 10?10 m.
A. 3 × 1018 Hz B. 3 × 1010 MHz C. 6 × 109 Hz D. 3 × 108 Hz E. 3 × 1020 Hz
A beam of light with a frequency range of 3.01 × 1014 Hz - 6.10 × 1014 Hz is incident on a metal surface. If the work function of the metal surface is 2
20 eV, what is the range of frequencies in this beam of light that will be responsible for ejecting electrons from this metal surface? A) 1.12 × 1014 Hz - 5.31 × 1014 Hz B) 1.12 × 1014 Hz - 3.10 × 1014 Hz C) 3.01 × 1014 Hz - 6.10 × 1014 Hz D) 5.31 × 1014 Hz - 6.10 × 1014 Hz E) None
A boat moves at 10.0 m/s relative to the water. If the boat is in a river where the current is 2.0 m/s, how long does it take the boat to make a complete round trip of 1.00 km upstream followed by a 1.00 km trip downstream?