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Kay [80]
3 years ago
7

Calculate the energy in kilowatt hours used by a heater that operates continuously for 30 minutes. The heater has a power rating

of 3000 W.
Physics
1 answer:
maria [59]3 years ago
5 0
3kW X 0.5hours
= 1.5 kWh
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Determine the inductance l of a 0.55-m-long air-filled solenoid 2.7 cm in diameter containing 9000 loops.
faltersainse [42]

Self inductance of a solenoid does not depend on magnetic field or current. When deriving the equation you can see that its self inductance is only dependent on geometric factors

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Which of these is NOT needed to sustain life on a planet? *
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I think it’s proximity of the sun
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2) Which of the following characteristics is associated
Anestetic [448]

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The correct answer should be high amplitude : )

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2 years ago
A quartz crystal vibrates with a frequency of 35,621 Hz. What is the period of the crystal's motion?
oksano4ka [1.4K]

Period = 1 / frequency

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4 0
3 years ago
There are roughly 3 × 10−6 g of uranium per liter of seawater. Assuming there are 3.535 × 1020 gallons of seawater on earth, cal
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4 x 10^12 kg Uranium

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1 L of sea water contains =  3 x 10^-6 g Uranium

13.38 x 10^20 L of sea water contains = 13.38 x 10^20 x 3 x 10^-6 g Uranium

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3 0
3 years ago
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