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3 years ago

Question 7 of 10

Physics

2 answers:

Lyrx [107]3 years ago

8 0

Answer:

A. They can transfer energy through a vacuum

C. They vibrate in two directions that are perpendicular to each other

D. They radiate outward in all directions

Explanation:

UNO [17]3 years ago

6 0

Answer:

A,c,d

Explanation:

Did it on A P E X

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Two 8.0 Ω lightbulbs are connected in a 12 V parallel circuit. What is the power of both glowing bulbs?

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Answer:

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Explanation:

p=Iv..where v=12 and I=8.0

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3 years ago

If a fish experiences an a of 9.8m/s2 over a period of 1.84s, what was the 4v?

777dan777 [17]

Answer:

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Explanation:

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3 years ago

Which is the result of using a machine?

Eddi Din [679]

Correct Answers is A.

The machines gives us some mechanical advantage. This means the mechanical average makes the work output greater than the work input
Simple most example is a lever. The force applied is smaller and the output work is larger as compared to input.

Option B cannot be true, as there must be a force to get some work done.
Option C and D are inverse of what a machine is designed for. A small force can be exerted through a large distance to have a large force exerted through a small distance. Common Example of this principle is a screw opener.

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3 years ago

The electric force between two charges A. increases with distance between the charges B. increases if either one of charges gets

beks73 [17]

Answer:

Option (A) , (b) and (d) are correct option

Explanation:

According to Coulomb's law electric force between two charges is given by

$F=\frac{1}{4\pi \epsilon _0}\frac{q_1q_2}{r^2}$

From the relation we can say that force is directly proportional to magnitude of charges and inversely proportional to distance between them '

So if we increase the distance then force will decrease

Increase if any of the charge get larger

If force is attractive then both the charge will be of different sign and is force is repulsive then both the charges of same sign

From above conclusion we can say that (a), (b) and (d) are correct option

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which two gases in earths atmosphere are believed by scientists to be greenhouse gases that are major contributors to global war

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Nitrogen and carbon dioxide??

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