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Zarrin [17]
4 years ago
11

Suppose an experiment is designed to test the durability of batteries in different conditions. All of the batteries tested are d

ouble-A (AA) Brand X. All sets of batteries are preconditioned in different environmental conditions for exactly 168 hours (1 week).
Set 1: 0°C (freezing point of water)
Set 2: 24°C (approximately room temperature)
Set 3: 37°C (approximately body temperature)

The batteries are then continuously used to power identical mechanical drummer toys. As long as the toy keeps drumming the battery is considered functional. The drumming time for each toy is measured as an indication of battery durability. In this experiment, which condition is not controlled?

A.) temperature
B.) brand of batteries
C.) test for durability
D.) type of battery (battery size)
Physics
1 answer:
AveGali [126]4 years ago
4 0

Answer:

I assume its c. Since its talking about testing.

Explanation:

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On a color wheel, colors that are directly across from each other are called _______ colors.
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I believe the answer is : A
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An ant is crawling along a yardstick that is pointed with the O-inch mark to the east and the 36-Inch mark to the west. It start
Drupady [299]

Answer:

33 Inches

Explanation:

The movement of the ant is sketched in the attached image. The ant moved from the 19-inch mark to 27-inch mark covering a distance of 13 Inches (27 - 19). Finally, it moved from the 27-inch mark to 7-inch mark covering a distance of 20 Inches (27 - 7).

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3 years ago
In a balloon adventure, you reach 10 km in height. Find the percentage variation in the weight of the balloon-crew system with r
Dmitriy789 [7]

Answer:

0.31%

Explanation:

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g = GM / R²

where G is the gravitational constant, M is the mass of Earth, and R is the radius of the Earth.

The acceleration due to gravity a height h above sea level is:

g' = GM / (R+h)²

The percent variation is:

(g − g') / g

= 1 − g'/g

= 1 − [GM / (R+h)²] / [GM / R²]

= 1 − R² / (R+h)²

= 1 − (R / (R+h))²

The average radius of the Earth is 6370 km.  The height of the balloon is 10 km.

1 − (6370 / (6370 + 10))²

0.0031

0.31%

8 0
3 years ago
Occasionally, people can survive falling large distances if the surface they land on is soft enough. During a traverse of Eiger'
uranmaximum [27]

Answer:

4611.58 ft/s²

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

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Equation of motion

v^2-u^2=2as\\\Rightarrow v=\sqrt{2as+u^2}\\\Rightarrow v=\sqrt{2\times 32.174\times 516+0^2}\\\Rightarrow v=182.218\ ft/s

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Magnitude of acceleration while stopping is 4611.58 ft/s²

8 0
3 years ago
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