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3 years ago

Three science questions help please!

Physics

1 answer:

Nimfa-mama [501]3 years ago

4 0

6. D
7. D
8. B
let me know if you need clarification

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You venture out on a cold winter morning to warm up your vehicle. You have layers of cotton/polyester blend clothes on and from

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Answer:

There is a localization of negative charge near the door handle.

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2 years ago

A circuit has a current of 2.4 A. The voltage is increased to 4 times its original value, while the resistance stays the same. H

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Answer:

Resistance will become 4 times the previous value

Explanation:

We have given current in the circuit i = 2.4 A

According to ohm's law current in the circuit is given by $I=\frac{V}{R}$

So $2.4=\frac{V}{R}$ ............eqn 1

Now voltage is increased to 4 times so new voltage = 4 V

And current in the circuit is same as 2.4 A

We have to fond the resistance so that after increasing voltage current will be same

So $2.4=\frac{4V}{R_{unknown}}$ ..........eqn 2

Dividing eqn 1 and 2

$1=\frac{V}{R}\times \frac{R_{unkown}}{4V}$

$R_{unknown}=4R$

So resistance will become 4 times the previous value

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3 years ago

Read 2 more answers

Which two spheres are interacting when there is a rainbow ? Please help make you brainiest.

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3 years ago

A capacitor is charged to 8.0×10−4 C , then discharged by connecting a wire between the two plates. 35us after the discharge beg

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Answer:

The average current is 19.567 A

Solution:

As per the question:

Charge, Q = $8.0\times 10^{- 4}\ C$

Time, t = $35\times 10^{- 6}\ s$

Now,

We know that current is constituted by the rate of transfer of the charge per unit time. Thus we can write:

I = $\frac{Q}{t}$ (1)

Now, the charge that was transferred is 86 % of the original value.

Therefore,

We replace Q by 0.86Q in eqn (1):

I = $\frac{0.86\times 8.0\times 10^{- 4}}{35\times 10^{- 6}} = 19.657\ A$

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3 years ago

A thermometer measures its own temperature ? What does it mean?

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When you put a thermometer in your mouth , it becomes the same temperature as you then it starts to measure the temperature of itself

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2 years ago