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29.04.2023

If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is lux.

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30.05.2023, solved by verified expert

Mathematics, DAV Post Graduate College

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The answer is 8 lux. Using the formula E= I/s^2, E stands for the illuminance on the surface that we are trying to solving, I stands for the intensity of the light from the sources it is candelas in the problem that we’re solving, and S stands for the distance from the light source to the surface it should be in meters.

E= I/s^2

E= 72/3^2

E=72/9

E= 8

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Mathematics, DAV Post Graduate College

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11 students found this answer

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Chemistry

If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is lux. a. 648 b. 24 c. 8 d. 216

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P Answered by Master

13

I took the test and the answer was C. 8

Chemistry

If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is lux. a. 648 b. 24 c. 8 d. 216

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P Answered by Specialist

13

I took the test and the answer was C. 8

Physics

If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is a. 216 lux. b. 8 lux. c. 24 lux. d. 648 lux

Step-by-step answer

P Answered by Master

30

If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is .

The formula of illuminance is equal to:
Illuminance = distance * light
Illuminance = 3 * 72
Illuminance = 216 lux.

So the correct answer is letter (A) 216 lux.

Mathematics

If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is lux.

Step-by-step answer

P Answered by Master

30

The answer is 8 lux. Using the formula E= I/s^2, E stands for the illuminance on the surface that we are trying to solving, I stands for the intensity of the light from the sources it is candelas in the problem that we’re solving, and S stands for the distance from the light source to the surface it should be in meters.

E= I/s^2

E= 72/3^2

E=72/9

E= 8

Physics

If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is a. 216 lux. b. 8 lux. c. 24 lux. d. 648 lux

Step-by-step answer

P Answered by Master

30

If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is .

The formula of illuminance is equal to:
Illuminance = distance * light
Illuminance = 3 * 72
Illuminance = 216 lux.

So the correct answer is letter (A) 216 lux.

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Imran is paid ?286 per week Every week he puts 20% of his wage into a savings account How much does he put into his savings each week

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P Answered by PhD

The answer is in the image

The answer is in the image

Mathematics

You can buy jars of the same jam in 2 sizes large jar:440g for £1.54 small jar:340g for £1.26 By considering the price per gram, work out which jar is the best value for money. Working must be shown

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P Answered by PhD

Answer: 440 grams for 1.54 is the better value
Explanation:
Take the price and divide by the number of grams
1.54 / 440 =0.0035 per gram
1.26 / 340 =0.003705882 per gram
0.0035 per gram < 0.003705882 per gram

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P Answered by PhD

Cost of 7 gallons=$24.50

Cost of 1 gallon=24.50/7=3.5

Cost of 15 gallons=15*3.5=52.5

Cost of 15 gallons will be $52.5

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P Answered by PhD

The solution is in the following image

The solution is in the following image

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The value of a collectible coin can be represented by the equation y = 2 x + 15, where x represents its age in years and y represents its total value in dollars. What is the value of the coin after 19 years? $2 $23 $38 $53

Step-by-step answer

P Answered by PhD

y=2x+15

where y=Value of coin

x=Age in years

Value of coin after 19 years=2*19+15

=$53

Therefore, Value after 19 years=$53

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