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Lana71 [14]
3 years ago
11

David wants to experiment with the device, so he connects an ammeter into the circuit and measures 11.5 AA when the device is co

nnected to the car's battery. From this, he calculates the time to boil a cup of water using the device. If the energy required is 100 kJkJ , how long does it take to boil a cup of water?
Physics
1 answer:
Mandarinka [93]3 years ago
4 0

Answer:

2.42hours

Explanation:

To calculate the time taken to boil the cup of water, we will use the formula

Q = It where

Q is the total energy required to boil the water = 100KJ = 100,000Joules

I is the current = 11.5A

t is the time taken to boil the water

t = Q/I

t = 100,000/11.5

t = 8695.65seconds

t = 2.42hours

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The Balmer series in hydrogen atom produces only infrared emission. O True O False
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Answer:

False

Explanation:

As we know that, the Balmer series gives the n values as,

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Now the value of wavelength can be calculated as,

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Here, R=109677 cm^{-1}.

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Now,

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3 years ago
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To solve the problem it is necessary to apply the concepts related to the voltage in a coil, through the percentage relationship that exists between the voltage and the number of turns it has.

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PART B) To express the number value we proceed to replace with the previously given values, that is to say

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