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Zanzabum
2 years ago
7

Uncertainty in 21.0 C is A. 0.1 B. 0.2 C. 0.05

Physics
1 answer:
san4es73 [151]2 years ago
4 0

it's A.0.1

that's the answer

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Which of these forces are acting within a nucleus? Check all that apply.
zavuch27 [327]

Answer:

Excuse me what?

Explanation:

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3 years ago
Please help for 21! will mark brainliest
Katyanochek1 [597]

The answer for this question is D

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5) What type of substance can seep<br> groundwater and make it unusable?
sergeinik [125]

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I believe <u>chemicals</u>, though I might be wrong.

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2 years ago
A 1.11 kg piece of aluminum at 78.3 c is put into a glass with 0.210 kg of water at 15.0
ValentinkaMS [17]

M = mass of aluminium = 1.11 kg

c_{a} = specific heat of aluminium = 900

T_{ai} = initial temperature of aluminium = 78.3 c

m = mass of water = 0.210 kg

c_{w} = specific heat of water = 4186

T_{wi} = initial temperature of water = 15 c

T = final equilibrium temperature = ?

using conservation of heat

Heat lost by aluminium = heat gained by water

M c_{a} (T_{ai} - T) = m c_{w} (T - T_{wi} )

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T = 48.7 c

7 0
3 years ago
The basic barometer can be used to measure the height of a building. If the barometric readings at the top and the bottom of a b
erma4kov [3.2K]

Answer:

h = 269.6 m

Explanation:

Pressure at the bottom of the building and at the top of the building must be related as

P_{top} = P_{bottom} - \rho g h

P_{top} = 730 mm Hg

P_{bottom} = 755 mm Hg

now we will have

(755 \times 10^{-3})(13.6 \times 10^3)(9.81) = P_{bottom}

P_{bottom} = 1.007 \times 10^5 Pa

P_{top} = (730\times 10^{-3})(13.6 \times 10^3)(9.81)

P_{top} = 0.974 \times 10^5

now we have

(1.007 - 0.974)\times 10^5 = 1.25 (9.81) h

h = 269.6 m

7 0
3 years ago
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