How could a lightbulb near an electromagnet, but not touching it, be lit? Is ac or dc required? Defend your answer.

Answers

Answer 1

Answer:

Answer:

If the light bulb is connected to a wire loop that intercepts changing magnetic field lines from an electromagnet, voltage will be induced which can illuminate the bulb. Change is key, so to stay lit the electromagnet should be powered with AC.

Explanation:

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A child slides down a slide on the playground and her hair starts to stand on end. What happened?

Answers

It's static electricity from sliding down. Whenever a person goes fast on something, (say a roller coaster/slide/etc...) their hair gets filled with static electricity. Have a good day! :3

possibly static electricity, I'm not so sure you should rely on my answer, but it's a guess.

Which one of the following statements about sulfuric acid is correct? A. Sulfuric acid is a known muriatic acid.
B. Sulfuric acid is a strong oxidizing agent.
C. Sulfuric acid is dangerous to living organisms.
D. Sulfuric acid has little effect on metals

Answers

The answer is C. Sulfuric Acid is dangerous to living organism

Direct contact with your skin and it will cause Chemical Burns , Direct contact with your eyes and it could cause a permanent Blindness.

This chemical also suck the water out of everything, so you can guess what will happen if it get into your body.

A racecar is traveling in uniform circular motion around a racetrack. What happens to the centripetal acceleration of the car if the speed is doubled and the radius of the circle remains constant?

Answers

Answer:

centripetal acceleration becomes 4 times

Explanation:

Given that a car is in the uniform circular motion on a circular track initially and then its speed is doubled.

Now as we know the equation for centripetal acceleration in a circular motion is given as:

$a_c=(v^2)/(r)$

where:

$a_c=$ initial centipetal acceleration

v = initial speed of the car

r = radius of the track (remains constant)

When the speed is doubled:

$a_c'=((2v)^2)/(r)$

$a_c'=(4v^2)/(r)$

$a_c'=4* (v^2)/(r)$

$a_c'=4\ a_c$

i.e. centripetal acceleration becomes 4 times in the later case.

Answer:

4 TIMES

Explanation:

As centripetal acceleration has formula a =v^2/r. as r is constant so a is directly proportional to square of speed so square of 2 is 4 hence 4 times

Choose the best scientific design to test the question “Which soil type results in the highest yield of tomatoes: clay soil or sandy soil?”

Answers

The best answer is a clay soil. Tomatoes are known to be highly adaptable and easy to grow. Tomatoes are said to grow on any types of soil except on heavy clay. For this case, the best option would be in clay soils because gardening in sandy soils is challenging. Plants dry out quickly and doesn't grow that well.

What are different type of plastids explain them?

Answers

Answer:

types of plastids

chloroplasts

chromoplasts

gerontoplasts

leucoplasts

Explanation:

ans

What is acceleration?a. change in velocity/change in time
b. change in distance/change in time
c. change in mass/change in volume
d. change in pressure/change in time

Answers

I'm pretty sure it's A.

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