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lyudmila [28]
3 years ago
7

An electroscope is a device that detects charge on objects that touch it or are brought near it. John rubs a piece of cotton fab

ric on a plastic rod and then touches the rod to the electroscope.
What methods of charging does John use?
Physics
2 answers:
Nimfa-mama [501]3 years ago
8 0
The answer is Static Electricity. When you say static electricity, there is a certain imbalance in the particles present on the surface of the material. That is why the electroscope was able to detect static electricity from the piece of cloth and plastic rod
iogann1982 [59]3 years ago
4 0

Answer:

John charges the rod through friction, then charges the electroscope through conduction. D on edg2020

Explanation:

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3 years ago
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A cube that has a volume of 1.00 m³ contains N distinguishable particles.
grandymaker [24]

Answer:

1 P = 0.5

2 P = 0.3

3 P = 0.01

Explanation:

The probability formula is

          P =V^N

Where P is the probability  V is the volume while N is the number of distinguishing particles

So for N = 1 and V = 0.500m^3

           P = (0.500m^3)^1\\

               = 0.5

For  N = 1 and V =  0.300m^3

           P = (0.300m^3)^1

               = 0.3

For   N = 1 and V = 0.0100m^3

     P =(0.0100m^3)^1

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6 0
3 years ago
Why must objects be cooled before their mass is determined on a sensitive balance?
zubka84 [21]
Objects should be cooled before their mass is determined on a sensitive balance because it could damage the balance. Also, because it would give you wrong reading of the mass. Hot objects would warm the air around it. A warm air would expand and would produce convection as it rises causing to give the object a mass that is less than the actual. Another reason would be it would cause instability in the readings, the mass would fluctuate every now and then due to the convection currents around the object. It is always recommended to weigh the masses of objects that are in room temperature.
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3 years ago
Can u help me. thank you​
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First, foremost, and most critically, you must look at the graph, and critically
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Without that ability ... since the graph is nowhere to be found ... I am hardly
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7 0
4 years ago
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