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Xelga [282]
3 years ago
13

I need help because I don't get it​

Physics
1 answer:
e-lub [12.9K]3 years ago
4 0
Oh honey I don’t know how to do it either
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Showing results for a 4 olm and 8 ohm resistor are connected in series. The current through the 4 olm resistor is 2 amps. What i
kirill115 [55]

Answer:

Let R1= resistance of 4ohms

R2= resistance of 8ohms

Equivalent resistance R will be

R=R1 + R2

=> 4+8=12ohms

The current through the two resistors will be the same since they are connected in series. Notwithstanding, the voltage will drop to appreciate the change.

Explanation:

7 0
3 years ago
Which is measured by the power of a machine?
Anton [14]

the word done by the machine

3 0
4 years ago
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a car is moving at a constant velocity of 20 m/s. A) plot a velocity vs time graph for a 10s interval. B) make a table of the di
ahrayia [7]

Answer: Graphing Velocity as a Function of Time. Earlier, we examined graphs of position versus time. Now, we are going to build on that information as we look at

Explanation:

7 0
3 years ago
A 15.0-mW laser puts out a narrow beam 2.00 mm indiameter.
UkoKoshka [18]

Explanation:

It is known that formula for energy per unit area per unit time is as follows.

             S = \frac{P}{A}

                = \frac{P}{\pi \times r^{2}} = \frac{4P}{\pi d^{2}}

      c \epsilon_{o} E^{2} = \frac{4P}{\pi d^{2}}

              E = \sqrt{\frac{4P}{\pi d^{2} c \epsilon_{o}}}        

Now, putting the values we will calculate the electric field as follows.

            E = \sqrt{\frac{4P}{\pi d^{2} c \epsilon_{o}}}

               = \sqrt{\frac{4 \times 15 \times 10^{-3} W}{3.14 \times (2mm \times \frac{1m}{1000 mm})^{2} \times 3 \times 10^{8} \times 8.85 \times 10^{-12}}}  

               = 1341.03 V/m

Now, we will calculate the average magnetic field as follows.

                   B = \frac{E}{c}

                      = \frac{1341.03 V/m}{3 \times 10^{8} m/s}

                      = 4.47 \times 10^{-6} T

                      = 4.47 \mu T

Thus, we can conclude that the average (rms) value of the magnetic field is 4.47 \mu T.

3 0
3 years ago
How can gases have such a large impact on earths atmosphere
kozerog [31]

Answer:

well, the air in our atmosphere stays there and nothing can get past the last layer. Think of is as a car. if there gets to be too much gas in it, it can harm you. I would also say it is one of the causes of global warming. Also air pollution is a big problem.

Explanation:

8 0
3 years ago
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