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Crazy boy [7]
2 years ago
5

7. A 25 N block is lowered 1.2 m by a 20 N force.

Physics
1 answer:
Sauron [17]2 years ago
3 0

Answer:

this answer your question

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PLEASE HELP!! At what temperature will silver have a resistivity that is four times the resistivity of tungsten at room temperat
Svetach [21]
Consider 20 deg.C. as room temperature.

From tables,
Silver has a resistivity of  1.6*10^-8 ohm-m at 20 deg.C, and it increases by 0.0038 ohm-m per deg.K increase.
Therefore if the temperature rise above 20 deg.C is T, then silver will have resistivity of
1.6*10^-8(1 + 0.0038T) ohm-m

At room temperature, the resistivity of tungsten (from tables) is 5.6*10^-8.

The resistivity of silver will be 4 times that of tungsten (at room temperature) when
1.6*10^-8(1 + 0.0038T) = 4*5.6*10^-8
1 + 0.0038T = 14
T = 13/.0038 = 3421 deg.K approx

Answer: 20 + 3421 = 3441 °C
4 0
3 years ago
What is meant by "steam distillation"? choose the correct option from below.
Diano4ka-milaya [45]

Answer:

b is the correct option.

Explanation:

Steam distillation is a distillation in which water is added to the mixture being distilled so that water and the organic compounds vaporize, condense and are collected together. This process is applied for the purification of those materials specially the organic materials which are temperature sensitive. The normal boiling method can not be implemented as these materials starts to decompose on high temperatures. This method has got a lot of applications in industries like petrolium refineries and the oil extraction from some plants etc.

7 0
3 years ago
Cocking your head would be most useful for detecting the ______ of a sound.
statuscvo [17]
Cocking your head would be most useful for detecting the LOCATION of a sound.
5 0
3 years ago
Read 2 more answers
Why does straightening the curve not change the equation that represents the graph
Sphinxa [80]
<span>You cant change the curve of a graph with out changing the equation</span>
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The greatest wind speed recorded on Earth’s surface is 231 miles per hour. What is the speed in kilometers per hour?
Contact [7]
It would be  371.758hole this helps

4 0
3 years ago
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