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2 years ago

What causes charges to move in a circuit?

Physics

2 answers:

ipn [44]2 years ago

7 0

A )voltage
(i.e differance in electricity field)

SashulF [63]2 years ago

6 0

Answer:

a) Voltage

Explanation:

As we know that voltage difference and electric field is related as

$E = \frac{\Delta V}{\Delta x}$

now when we apply voltage across the length of any conductor then it will induce electric field inside the conductor.

Due to this electric field we can say that the free charge inside the conductor will experience electric force on it

$F = qE$

Due to this electric force free charge will start moving inside the conductor and it will form electric current

So here correct answer for electric current will be

a) Voltage

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The human ear is most sensitive to the sounds in what range?

jeyben [28]

Answer:

The human ear is most sensitive to sounds in the range of 2000 to 3000 Hz

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2 years ago

3. How is using a model to study cells helpful?

4vir4ik [10]

Answer:

Yes, it is very helpful.

Explanation:

It's helpful since in a cell, plant or animal, there are a lot of different things. It's hard to memorize everything and know what they look like. Using a model can help you memorize everything better and even understand it better. If someone asked me where or what something was in a cell I think I would be able to recognize it better.

I hope this helps!

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2 years ago

HELP PLEASE BOYLES LAW

kogti [31]

Answer:

3 L

Explanation:

From the question given above, the following data were obtained:

Initial volume (V₁) = 2 L

Initial pressure (P₁) = 0.75 atm

Final pressure (P₂) = 0.5 atm

Final volume (V₂) =?

Using the Boyle's law equation, the new volume (i.e final volume) of the Ne gas can be obtained as:

Initial volume (V₁) = 2 L

Initial pressure (P₁) = 0.75 atm

Final pressure (P₂) = 0.5 atm

Final volume (V₂) =?

P₁V₁ = P₂V₂

0.75 × 2 = 0.5 × V₂

1.5 = 0.5 × V₂

Divide both side by 0.5

V₂ = 1.5 / 0.5

V₂ = 3 L

Thus, the new volume of the Ne gas is 3 L

7 0

2 years ago

A child’s toy that is made to shoot ping pong balls consists of a tube, a spring (k = 18 N/m) and a catch for the spring that ca

UkoKoshka [18]

Answer:

The height is 3.1m

Explanation:

Here we have a conservation of energy problem, we have a conversion form eslastic potencial energy to gravitational potencial energy, so:

$E_e=\frac{1}{2}K*x^2\\E_e=\frac{1}{2}18N/m*(9.5*10^{-2}m)^2\\E_e=0.081J$

then we have only gravitational potencial energy when the ball is at its maximun height.

$E_g=m*g*h$

because all the energy was transformed Eg=Ee

$h=\frac{0.081J}{9.8m/s^2*m}$

searching the web, the mass of a ping pong ball is 2.7 gr in average. so:

$h=\frac{0.081J}{9.8m/s^2*(2.7*10^{-3}kg)}\\h=3.1m$

6 0

2 years ago

What is the phase change called when a liquid changes to gas

Alexandra [31]

When a liquid changes to gas, this phase change is called vaporization or evaporization.

7 0

2 years ago

Read 2 more answers