How much energy is released when 0.60 ?g of 3H have decayed to 3He? The mass of 3He is 3.0160293 u, the mass of 3H is 3.0160492 u, 1 u = 931.5 MeV/c2, 1 eV = 1.60 × 10-19 J, and NA = 6.022 × 1023 molecules/mol
What will be an ideal response?
360 J
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An AC generator with peak voltage 100 volts is placed across a 10-? resistor. What is the average power dissipated?
A. 100 W B. 150 W C. 500 W D. 1000 W E. 2000 W
Rigel has an apparent magnitude of + 0.18 and Betelgeuse an apparent magnitude of +0.45. What can you conclude from this?
A) Betelgeuse must be closer to Earth. B) Rigel is brighter than Betelgeuse. C) Rigel must be closer to Earth. D) Betelgeuse is brighter than Rigel. E) Both stars are brighter than the full moon.
The resistance of a conducting material depends on its composition, length, diameter, and temperature
a. True b. False Indicate whether the statement is true or false
You observe the peak brightnesses of two white dwarf supernovae. Supernova A is only 1/4 as bright as Supernova B. What can you say about their relative distances?
A) Supernova A is twice as far away as Supernova B. B) Supernova A is four times as far away as Supernova B. C) Supernova B is four times as far away as Supernova A. D) Supernova B is twice as far away as Supernova A. E) We can't say anything about their relative distances because we do not have enough information.