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inna [77]
3 years ago
10

A set is any collection of objects. true or false.

Physics
1 answer:
Semenov [28]3 years ago
3 0
It can be, but set also means many other things.
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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
A4 40 kg girl skates at 3.5 m/s one ice toward her 65 kg friend who is standing still, with open arms. As they collide and hold
salantis [7]

Explanation:

Below is an attachment containing the solution.

8 0
3 years ago
A light-year is a unit of a. time. c. mass. b. distance. d. density. please select the best answer from the choices provided a b
11111nata11111 [884]

Answer:

distance

Explanation:

it is the distance traveled by light in one year

3 0
1 year ago
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_____ you remember to put the lid back on the jar of mayonnaise​
Lilit [14]

Answer:

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Explanation: Hope this helps :)

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