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sergij07 [2.7K]
3 years ago
12

Why are circuits important?

Physics
1 answer:
padilas [110]3 years ago
6 0
You should draw a diagram of each for this question.
In a series circuit, the resistors experience the same current. In a parallel circuit, they have the same voltage drop. Therefore, the equivalent resistance is calculated differently for a series and parallel circuit.
Ohm's law: V=IR
Resistance keeps a circuit from shorting.
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a driver is going at 120km h and sees a barrier 60.0 m ahead it takes 5secounds to apply the brakes and decelerates at 12m does
Soloha48 [4]

Answer:

yes, if you're going at 120 km and you saw the wall that late then it wouldn't me possible to decrease 12 meters in 5 seconds and not hit the wall that's only 60 meters away

Explanation:

5 0
3 years ago
An electron is released form rest in a region of space where a uniform electric field is present. Joanna claims that its kinetic
Blizzard [7]

Answer:

reviewing the opinion of the two students we see that neither is right, since when the kinetic energy increases the potential energy decreases by the same value

Explanation:

For this exercise we must use the law of conservation of energy.

Starting point. Resting electron

        Em₀ = U = eV

the potential difference and the electric field are related

         V = - E d

Final point. When leaving the electric field

           Em_{f} = K = ½ m v²

           Em₀ = Em_{f}

           e E d = ½ m v²

From this expression we see that when an electron moves from the initial point to the final point, the potential energy must decrease, for the total energy to be constant.

When reviewing the opinion of the two students we see that neither is right, since when the kinetic energy increases the potential energy decreases by the same value

3 0
3 years ago
A boat travels west at 20km/h. The journey lasts 3hours. How far has the boat travelled? *
fomenos

Answer:

B)60km[W]

Explanation:

The boat travels 20km/h. So every hour the boat goes 20 miles. So if one hour equals 20km. Then 3 hours will be 3*20km which equals 60km. The boat is also going west. So you should consider putting that in your answer as well. So the answer would be B)60km[W].

Hope that helps!

3 0
3 years ago
Read 2 more answers
Which stage of sleep usually comes before REM sleep
kumpel [21]
Stage 4





Hope this helps
7 0
4 years ago
Read 2 more answers
We attach two blocks of masses m1 = 7 kg and m2 = 7 kg to either end of a spring of spring constant k = 1 N/m and set them into
SVETLANKA909090 [29]

Answer:

The angular frequency \omega of the oscillation is 0.58s^{-1}

Explanation:

For this particular situation, the angular frequency of the system is given by

\omega=\sqrt{\frac{m_1+m_2}{m_1m_2}k}=\sqrt{\frac{7 kg+5 kg }{7kg *5 kg}1\frac{N}{m}}=\sqrt{\frac{3}{35s^2}}\approx 0.58s^{-1}

6 0
3 years ago
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