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marin [14]
1 year ago
14

Find the acceleration of the 2 kg block in the following diagram. ( Hint find the net force!)​

Chemistry
1 answer:
mario62 [17]1 year ago
7 0
Answer:
2m/s^2
Explanation:
Fnet = F2-F1
ma = 8-4
2a = 4
Dividing both sides by 2
a = 2
Therefore (a) thus acceleration is 2m/s^2
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A balloon filled with helium occupies 21.0ft³ at 55.0°F. Find the temperature of the helium if the volume of the balloon decreas
harkovskaia [24]

Answer:

Assuming pressure is held constant,the question reduces to a ratio and proportion type of question where;

At constant pressure,

21.0ft³-55.0°F

11.0fy³=11.0ft³/21.0ft³×55°F

The temperature is 28.809°F≈29°F

6 0
3 years ago
Please help/show work!
Keith_Richards [23]

Answer:

7.00335g

Explanation:

n=\frac{V}{V_m} \\n = \frac{11.2}{22.4} \\n= 0.5 mol

n=\frac{m}{M} \\m=nM\\m=(0.5)(14.0067)\\m=7.00335g

3 0
1 year ago
The following gases are at STP. Which one will diffuse the fastest? F2, CO2, He, SO2, NO, NH3
Lisa [10]
This can be solve using the grahams law, which states that the rate of diffusion of the gas is inversely proportional the square root of the molar mass of the gas. meaning the gas with smaller molar mass is the fastest to diffuse

molar mass of the following
F2 = 38 g/mol
CO2 = 44 g/mol
He = 4 g/mol
SO2 = 64 g/mol
NO = 30 g/mol
NH3 = 17 g/mol

so the fastest is He
3 0
3 years ago
3
Marina86 [1]

Answer:

  • 3
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  • 3.2
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Explanation:

pls mark brainliest

8 0
3 years ago
Which of the following involves a reaction in which energy is absorbed?
Bingel [31]
A chemical hand warmer because you absorb the heat. Brainliest pls lol
6 0
2 years ago
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