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adoni [48]
3 years ago
8

In a given circuit, the supplied voltage is 1.5 volts. One resistor is 3 ohms and the other is 2 ohms. Use Ohm's law to determin

e the current in the circuit.
0.3 amps
1.5 amps
7.5 amps
3.3 amps
Physics
2 answers:
Umnica [9.8K]3 years ago
6 0

Answer:

the answer is 0.3 yw XD

Explanation:

ozzi3 years ago
5 0

You haven't said whether the two resistors are connected
in series or in parallel.  It makes a difference.

--  If they are in series, then their combined effective resistance is

                 (3 + 2) = 5 ohms.

Current in the circuit is    (voltage)/(resistance) = 1.5/5 = 0.3 Amp.


--  If they are in parallel, then their combined effective resistance is

               (3 x 2) / (3 + 2) = (6/5) = 1.2 ohms.

Current in the circuit is  (voltage)/(resistance) =  1.5/1.2 = 1.25 Amp.
 
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klemol [59]

Answer:

Speed:

2.01x10^{8}m/s

Wavelength:

4.24x10^{-7}m

Frequency:

4.74x10^{14}Hz

Explanation:

The speed of the laser as it travels through polystyrene can be determine by means of the equation of the refraction index:

n = \frac{c}{v} (1)

Where c is the speed of light and v is the speed of the laser in the medium.

Therefore, v will be isolated from equation 1

v = \frac{c}{n}

v = \frac{3x10^{8}m/s}{1.490}

v = 2.01x10^{8}m/s

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Frenquency:

Since, wavelength is the only one who depends on the media. Therefore the frequency in both medium will be the same.  

To determine the frequency it can be used the following equation

c = \nu \cdot \lambda  (2)

Where c is the speed of light, \nu is the frequency and \lambda is the wavelength

Then, \nu wil be isolated from equation 2.

\nu = \frac{c}{\lambda}  (3)

Before using equation 3 it is necessary to express \lamba in units of meters.

\lambda = 632.8nm . \frac{1m}{1x10^{9}nm} ⇒ 6.328x10^{-7}m

\nu = \frac{3x10^{8}m/s}{6.328x10^{-7}m}

\nu = 4.74x10^{14}s^{-1}

\nu = 4.74x10^{14}Hz

Hence, the frequency of the laser has a value of 4.74x10^{14}Hz

Wavelength:

To determine the wavelength it can be used:

v = \nu \cdot \lambda

\lambda = \frac{v}{\nu}

Where v is the speed of the laser through the polystyrene.

\lambda = \frac{2.01x10^{8}m/s}{4.74x10^{14}s^{-1}}

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3 years ago
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Answer:

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Ni sin i = Nr sin r

Judging from the question the source of the ray is in the water (directed up)

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From inside the pond:

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Explanation:

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