Two 3-? resistors are connected in series. Another 3-? resistor is then connected in parallel to the two already in series. The resulting combination has what resistance?
1. 1 ?
2. 2 ?
3. 4 ?
4. 5 ?
2
Physics & Space Science
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Briefly discuss dark matter
What will be an ideal response?
Physics & Space Science
Photon A has an energy of 3.3 × 10^–19 J. Photon B has 4 times the frequency of Photon A. What is the energy of Photon B?
a. 8.3E–20 J b. 1.7E–19 J c. 1.3E–18 J d. 6.6E–19 J e. 5.3E–18 J
Physics & Space Science
Why does the density of water vary with temperature?
Physics & Space Science
Which of these is characteristic of an ideal (Carnot) heat engine?
A. It creates more energy than it consumes B. It causes no increase in entropy C. It cannot be used to cool a house D. It does not create waste heat
Physics & Space Science