PHYSICS HIGH SCHOOL

what is the difference in the charges on a balloon rubbed in your hair and a glass  rod rubbed with silk? why?

Answers

Answer 1
Answer: The balloon steals electrons from your hair, leaving the hair positively charged, and the balloon negatively charged. It causes the hair to be apart from each other, because they have the same charge. Glass has a weaker hold on electrons, and silk absorbs the lost electrons.
Answer 2
Answer:

Answer:The balloon steals electrons from your hair, leaving the hair positively charged, and the balloon negatively charged. It causes the hair to be apart from each other, because they have the same charge. Glass has a weaker hold on electrons, and silk absorbs the lost electrons.

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from his observations of cannon drilling, Count Rumford concluded that heat could not be a form of what?

Answers

Answer:

Matter is the correct answer for this question.

I did this test recently and it was correct.

Explanation:

Current can also be calleda. voltage.
b. electricity.
c. moving charges.
d.
b. and
c.

Answers

Electrical current is the flow of moving charges.
D. It is electricity and moving charges

An opaque material absorbs some light frequencies that shine on it and reflects others. True False please help me

Answers

The answer is true because everything obsorbes light.

A 10-kilogram bicycle is traveling at a speed of 2 m/s. what is the bikes kinetic energy?

Answers

We have: K.E. = 1/2 mv²
Here: m = 10 Kg
v = 2 m/s

Substitute their values, 
K.E. = 1/2 * 10 * 2²
K.E. = 1/2 * 10 * 4
K.E. = 20 J

In short, Your Answer would be 20 Joules

Hope this helps!

Rob measures the solubility of three different salts in water at 22°C.

Answers

The correct answer for this question is this one: "B. line graph." Rob measures the solubility of three different salts in water at 22°C. The data can be best presented in a line graph.
Here are the following choices.
A. bar graph
B. line graph
C. histogram
D. scatterplot

The correct answer is "Bar Graph"

Clouds, wind, and rain are part of the _____. stratosphere
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troposphere
thermosphere

Answers

A its Stratosphere, Sorry I didn't see your answer, its bilogy I think not physics.. :)

Answer:

troposphere

Explanation:
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