Answer:
TO POWER ELECTRIC GADGETS AND SAVE EARTH FROM POLLUTION
Explanation:
Answer:
Inductor should be placed the circuit to raise its power factor.
Explanation:
Inductor:
- It is passive component that is used in most electrical circuits to store energy in the form of magnetic energy when electric current flows through it.
- It has the function of developing electromotive force in the direction that reduces fluctuation when a fluctuating current flows.
Capacitor:
- It is a device for storing electrical energy, consisting of two conductors in close proximity and insulated from each other.
we know that,
Power factor:
cosα = R / Z
cosα = R^2/ (sqrt(R
To increase the power factor, denominator should decrease.
from the equation we can say that, the power factor is inversely proportional to X(L)
Hence X(L) should increase.
Therefore, an inductor is required to be connected.
learn more about power factor here:
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Answer:
T = 27.92 N
Explanation:
For this exercise let's use Newton's second law
T - W = m a
The weight
W = mg
The acceleration can be found by derivatives
a = dv / dt
v = 2 t + 0.6 t²
a = 2 + 0.6 t
We replace
T - mg = m (2 + 0.6t)
T = m (g + 2 + 0.6 t) (1)
Let's look for the time for the speed of 15 m / s
15 = 2 t + 0.6 t²
0.6 t² + 2 t - 15 = 0
We solve the second degree equation
t = [-2 ±√(4 - 4 0.6 (-15))] / 2 0.6
t = [-2 ±√40] / 1.3 = [-2 ± 6.325] / 1.2
We take the positive time
t = 3.6 s
Let's calculate from equation 1
T = 2.00 (9.8 + 2 + 0. 6 3.6)
T = 27.92 N
5,758.5 miles or thr moon is a quarter of the diameter of the earth