A 1500-W heater is connected to a 120-V line. How much heat energy does it produce in 2.0 hours?
A) 1.5 kJ
B) 3.0 kJ
C) 0.18 MJ
D) 11 MJ
E) 18 MJ
Answer: D
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What is the capacitance of this capacitor if a dielectric material with a dielectric constant of 2.4 is placed between the plates, completely filling them? (?0 = 8.85 × 10-12 C2/N ? m2) A) 1.3 × 10-10 F B) 1.3 × 10-12 F C) 15 × 10-14 F D) 64 × 10-14 F E) 15 × 10-12 F
The temperature of the Sun's interior is estimated to be about how many kelvins?
a. 1500 b. 15 million c. 5 billion d. 60,000
A farmer is using a tank of 20°C nitrogen pressurized to 540 kPa absolute. It exits the tank out a hose. The hose snaps and the farmer is hit with the expanding nitrogen. Air is primarily nitrogen so assuming it is air flowing with no losses, the temperature of the exiting nitrogen is nearest:
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