What does the symbol Li+ represent?

Answers

Answer 1

Answer: it means lithium ion.
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Answer 2

Answer: a request of help for an exam test.

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If you walk across a nylon rug and then touch a large metal object such as a doorknob you may get a spark and a shock. Why does this tend to happen more on dry days than on humid days (Hint: it has to do with the electric dipole of water molecules). Why are you less likely to get a shock if you touch a small metal object, such as a paper clip?

Answers

Answer:

Explanation:

You are more likely to be shocked during dry days than humid days because during humid days more water is in the air, and water being a good conductor helps the air absorb some of those charges from you, while during dry days there is less water in the air and hence the charges build up since they are not absorbed.

You are less likely to be shocked when you touch a small metal object because smaller metal objects like a paper clip have less space to accept net charge.

Explain what happens when you vigorously rub your wool socks on a carpeted floor,touch a metal doorknob and get shocked

Answers

When you are rubbing the wool socks on the carpet, you are transferring electrons. When you touch the metal doorknobs, the electron levels are then going back to normal. The rush of electrons causes the shock.

Final answer:

When you rub your wool socks on a carpeted floor and then touch a metal doorknob, you get shocked. This happens due to the transfer of electrons from the carpet to the socks, resulting in a buildup of negative charge which is discharged when you touch the grounded doorknob.

Explanation:

When you vigorously rub your wool socks on a carpeted floor, you transfer electrons from the carpet to the socks through friction. This creates a buildup of negative charge on the socks. When you then touch a metal doorknob, which is grounded, the excess electrons on your socks quickly flow to the doorknob, resulting in a sudden discharge of static electricity and a shock.

Learn more about Static electricity here:

brainly.com/question/21327455

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Some equipment that was in operation caused continuous amplification of vibrations in a structure being worked on this type of vibration is

Answers

When some equipment that was in operation causes continuous amplification of vibrations in a structure being worked on, this type of vibration is called forced vibration. Forced vibration is the tendency of one object to induce vibration onto another connected or adjoining system of objects.

A 55kg female bungee jumper fastens one end of the cord (made of elastic material) to her ankle and the other end to a bridge. Then she jumps off the bridge. As the cord is stretching it exerts an elastic force directed up on her. Calculate her acceleration at the instant the chord exerts an elastic force of 825N [up] on her.

Answers

Downward force = gorce of gravity (her weight) = 55 x 9.8 = 539 newtons / / / Upward force = 825 newton. / / / Net force = 825 - 539 = 286 newtons upward. / / / F = m a / / / a = f / m = 286 / 55 = 5.2 meters per second squared Upward. / / / Note: We don't know the length of her fall before the bungee kicks in. At the moment we're dealing with, when her acceleration is 5.2 m/s-squared Upward, her velocity can very well be Downward.

When the jumper jumps off , there is always a force of gravity acting on her which is 55*9.8 =539N downwards. (Considering the acceleration due to gravity to be 9.8)
Since the question says that the force exerted by cord is 825N upwards , it is obvious that the pseudo force of acceleration must act downwards and the jumper must be moving upwards.
Assume the acceleration at that instant be 'a' .
Pseudo force = mass * acceleration = 55*a
Since the body is in dynamic equilibrium , all forces must cancel out.
Hence ,
539 +55*a = 825
=> 55*a = 825-539 = 286
=> a = 286/55 = 5.2
So , acceleration at that instant was 5.2 m/s²

What is the first step dealing with an injured relationship

Answers

well there is two if u are badly injured go check it out if u are a bit hurt rest it while having ice on it

Communicate your issues and agree on a solution

A stuntman jumps from the roof of a building to the safety net below. How far has the stuntman fallen after 1.6 seconds?

Answers

how tall is the building?
u need to divide the height by 1.6 to get your answer

Answer:

Explanation:

12.5m

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A 72-tooth gear is connected to a 12-tooth gear. If the large gear makes one complete turn, how many turnsdoes the small gear make?