Compute the specific power of tritium. (b) Calculate the activity lin Bąj of trititum needed to supply 25 W of electric power to a tablet computer if the thermal-to-electric energy conversion efficien...
Compute the specific power of tritium. (b) Calculate the activity lin Bąj of trititum needed to supply 25 W of electric power to a tablet computer if the thermal-to-electric energy conversion efficiency is 4% of tritium
Homework Answers
Required power is 25W.
Conversion efficiency is 4%, therefore, before converting into electrical energy, the required power is (25/4) x 100 W = 625 W.
The power in milliwatts emitted by one curie of radiation can be calculated by taking the number of MeV (17.6 MeV) for the radiation times approximately 5.93.
Therefore, 1 curie is capable of producing 17.6 x 5.93 mW.
For 625W, we need 625/(17.6 x 5.93m) curie of radiation.
1 curie / gram = 37 x 109 becquerels / gram.
Therefore, required activity is (625 x 37 x 109)/(17.6 x 5.93m) = 221.57 x 1012 Bq/g
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Compute the specific power of tritium. (b) Calculate the activity lin Bąj of trititum needed to supply 25 W of electric power to a tablet computer if the thermal-to-electric energy conversion efficien...
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Problem 2: Pedal Power
Many villages in the developing world lack access to electricity.
One proposed solution is the ‘Free Electric’ bicycle, which is a
stationary bike hooked up to a generator and battery. Pedaling the
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Need help on part D & E Problem 2: Pedal Power Many villages in the developing...
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Problem 2: Pedal Power
Many villages in the developing world lack access to electricity.
One proposed solution is the ‘Free Electric’ bicycle, which is a
stationary bike hooked up to a generator and battery. Pedaling the
bike powers the generator, which creates electricity that is stored
in the battery. The inventor claims that 1 hour on the bike can
produce a whole day of electricity. Let’s put it to the test!
Assume the...
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Many villages in the developing world lack access to electricity.
One proposed solution is the ‘Free Electric’ bicycle, which is a
stationary bike hooked up to a generator and battery. Pedaling the
bike powers the generator, which creates electricity that is stored
in the battery. The inventor claims that 1 hour on the bike can
produce a whole day of electricity. Let’s put it to the test!
Assume the following: The human body is 25%...
Need help on part D & E
Problem 2: Pedal Power
Many villages in the developing world lack access to electricity.
One proposed solution is the ‘Free Electric’ bicycle, which is a
stationary bike hooked up to a generator and battery. Pedaling the
bike powers the generator, which creates electricity that is stored
in the battery. The inventor claims that 1 hour on the bike can
produce a whole day of electricity. Let’s put it to the test!
Assume the...
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