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3 years ago

6

A 12.0 v storage battery is connected to three resistors, 6.75 ?, 15.3 ?, and 21.6 ? respectively. the resistors are joined in p

arallel. what is the equivalent resistance?

1 answer:

sukhopar [10]3 years ago

3 0

I hope this helps......

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Which type of waves from the electromagnetic spectrum are used in heat lamps and heat sensing devices?

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Infrared waves are used in heat lamps and other heat sensing devices. Infrared waves or commonly known as Infrared radiations (IR) is the type of electromagnetic radiation we encounter most in our everyday life. Heat lamps are electrical devices which emit infrared radiation.

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If a microwave oven produces electromagnetic waves with a frequency of 2.30 ghz, what is their wavelength?

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Answer: wavelength is $1.30 \times 10^8 nm.$

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To Find frequency use the formula:

$c=f$ λ

Where, c is the speed of electromagnetic wave or light. f is the frequency, and λ is the wavelength of light.

Rearranging, $\lambda = \frac{c}{f}$

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A 5.00 L air sample at a temperature of -50 °C has a pressure of 107 kPa. What will be the new pressure if the temperature is ra

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3 years ago

Which object has the most gravitational potential energy?

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Answer: An 8 kg book at a height of 3 m has the most gravitational potential energy.

Explanation:

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So, formula to calculate gravitational potential energy is as follows.

U = mgh

where,

m = mass of object

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h = height of object

(A) m = 5 kg and h = 2m

Therefore, its gravitational potential energy is calculated as follows.

$U = mgh\\= 5 kg \times 9.81 m/s^{2} \times 2 m\\= 98.1 J (1 J = kg m^{2}/s^{2})$

(B) m = 8 kg and h = 2 m

Therefore, its gravitational potential energy is calculated as follows.

$U = mgh\\= 8 kg \times 9.81 m/s^{2} \times 2 m\\= 156.96 J (1 J = kg m^{2}/s^{2})$

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Therefore, its gravitational potential energy is calculated as follows.

$U = mgh\\= 8 kg \times 9.81 m/s^{2} \times 3 m\\= 235.44 J (1 J = kg m^{2}/s^{2})$

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Therefore, its gravitational potential energy is calculated as follows.

$U = mgh\\= 5 kg \times 9.81 m/s^{2} \times 3 m\\= 147.15 J (1 J = kg m^{2}/s^{2})$

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