A 60 W bulb is left on from 8:00 a. m. to 3:00 p. m. Calculate the energy usage of the bulb.
k...
Physics, 21.04.2020 05:16 datzmypupppup
A 60 W bulb is left on from 8:00 a. m. to 3:00 p. m. Calculate the energy usage of the bulb.
kWh
Answers: 2
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The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.
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Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?
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Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.
Answers: 2
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