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storchak [24]
3 years ago
6

Bradley drops a rock in a well. It falls for 12 seconds. How deep is the well?

Physics
1 answer:
erik [133]3 years ago
3 0
It’s 12 seconds long
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The illuminance due to a 60.0-w lightbulb at 3.0m is 9.35 lx. What is the total luminous flux of the bulb
Furkat [3]
The equation for luminous flux is given as P = 4\pir^{2}E
where P is the luminous flux, r is the distance and E is the illumination. The unit for P is lumen, E is lux and r is in meters. Substituting the given to the equation:

P = 4\pir^{2}E 

P= 4\pi(3)^{2}(9.35) = 1057.46 lumens (lm)

The total luminous flux is equal to 1057.46 lumens (lm).
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3 years ago
___ is produced when grains of quartz in sandstone are welded together when the rock is subjected to high temperatures.
Galina-37 [17]
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3 years ago
What is another word for a change in velocity/change in time
inna [77]

Answer:

acceleration

Explanation:

acceleration =velocity final-velocity initial /time

5 0
2 years ago
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A soccer player kicks a ball at rest on the
scoundrel [369]

The kinetic energy and gravitational potential energy changes during its movement from ground to the top height.

<h3>What happens to kinetic and potential energy while motion?</h3>

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Learn more about kinetic energy here: brainly.com/question/20658056

5 0
2 years ago
The weight of a box is found to be 30 N. What is the approximate mass of the box?
KengaRu [80]
The mass of the box would be 30!
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3 years ago
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