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pentagon [3]
3 years ago
10

When heating a substance a phase change will start to occur when kinetic energy of the particles is _____ attractive forces bewt

ween the particles
low enough to overcome

great enough to combine

great enough to overcome

low enough to combine

equal to
Physics
1 answer:
Sergeu [11.5K]3 years ago
8 0
Great enough to overcome
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Five liters of air at 50 c is warmed to 100c what is the new volume if the pressure remain constant
KonstantinChe [14]
To solve the problem, we can use Charle's law, which states that for an ideal gas at constant pressure the ratio between absolute temperature T and volume V remains constant:
\frac{T}{V}=k
For a gas transformation, this law can be rewritten as
\frac{T_1}{V_1}= \frac{T_2}{V_2} (1)
where 1 and 2 label the initial and final conditions of the gas.

Before applying the law, we must convert the temperatures in Kelvin:
T_1 = 50^{\circ}C + 273 = 323 K
T_2 = 100^{\circ}C+273=373 K
The initial volume of the gas is V_1 = 5 L, so if we re-arrange (1) we find the new volume of the gas:
V_2 = V_1  \frac{T_2}{T_1}=(5 L) \frac{373 K}{323 K}=5.77 L
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3 years ago
Tropism to stimuli could be slow at fast but all plants respond to __?
FromTheMoon [43]
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4 years ago
How do you find the letters to the science weather​
yaroslaw [1]

Answer:

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Explanation:

3 0
3 years ago
A person pushes a block 4 m with a force of 25 N. How much work is being done?
Elina [12.6K]

Answer:

<h2>100 J</h2>

Explanation:

The work done by an object can be found by using the formula

workdone = force × distance

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workdone = 25 × 4

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3 0
3 years ago
John and Caroline go out for a walk one day. This graph represents the distance they traveled over time.
valentinak56 [21]

Answer:

From 0.75 to 1.25 hours

Explanation:

Given

See attachment for graph

Required

Point where they didn't move

This means that we identify the point where the distance didn't change.

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The horizontal line on the graph represents 30km and the time interval is: 0.75 to 1.25 hours.

<em>Hence, (c)  is correct</em>

4 0
3 years ago
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