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ExtremeBDS [4]
3 years ago
7

One of the factors that determines the ? of a capacitor is the frequency measured in hertz.

Physics
2 answers:
Amanda [17]3 years ago
5 0

Answer:

<h2>One of the factors that determines the <u>reactance</u> of a capacitor is the frequency measured in hertz.</h2>

Explanation:

<em>Capacitive reactance is  the opposition offered to the passage of alternating current.</em>

<em />

The capacitive reactance is defined as

X_{C}=\frac{10^{6} }{2 \pi f C}

Where X_{C} is the capacitive reactance in ohms, f is the AC frequency in hertz and C is the capacitance in microfarads.

This mathematical definition stablish a relation between capactivie reactance and frequency, actually these two are inversely proportional, that is, more frequency means less capacitive reactance.

Therefore, the word that completes the statement is reactance.

olchik [2.2K]3 years ago
4 0

Answer:

The reactance of the capacitor

Explanation:

In an AC circuit containing different elements (capacitors, resistors and inductors), we cannot simply calculate the equivalent resistance of the circuit, so another quantity is used, which is called reactance.

For a capacitor, the reactance is given by:

X=\frac{1}{2 \pi f C}

where:

f is the frequency of the AC current in the circuit

C is the capacitance of the capacitor

The reactance has a similar meaning to that of the resistance for a DC current. In fact, we notice that:

- When f=0 (which means we are in regime of DC current, because the current never changes direction), the reactance is infinite. This is correct: in a DC circuit, the capacitor does not let current pass through it, so it like it has infinite resistance (=infinite reactance)

- When f tends to infinite, the reactance becomes zero: in such situation, the current in the circuit changes direction so quickly that the capacitor has no enough time to "block" the current in the circuit, so it like it has almost zero resistance (zero reactance).

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A bicyclist travels 4.5 km west, then travels 6.7 km at an angle 27.0 degrees South of West. What is the magnitude of the bicycl
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Answer:

<em>10.90km</em>

Explanation:

Magnitude of the total displacement is expressed using the equation

d = √dx²+dy²

dx is the horizontal component of the displacement

dy is the vertical component of the displacement

dy = -6.7sin27°

dy = -6.7(0.4539)

dy = -3.042

For the  horizontal component of the displacement

dx = -4.5 - 6.7cos27

dx = -4.5 -5.9697

dx = -10.4697

Get the magnitude of the bicyclist's total displacement

Recall that: d = √dx²+dy²

d = √(-3.042)²+(-10.4697)²

d = √9.2538+109.6146

d = √118.8684

<em>d = 10.90km</em>

<em>Hence the magnitude of the bicyclist's total displacement is 10.90km</em>

<em></em>

6 0
3 years ago
A motor-cycle rider going 90km/hr around a curve with a radius of 100m must lean at an angle to the vertical. The angle at which
BartSMP [9]

Answer:

The angle of inclination of the rider to the vertical is 32.5⁰.

Explanation:

Given;

linear speed of the motor cycle, v = 90 km/hr = 25 m/s

radius of the circle, r = 100 m

The angle of inclination of the rider to the vertical is calculated using banking angle formula;

\theta = tan^{-1}(\frac{v^2}{rg} )\\\\\theta = tan^{-1} (\frac{25^2}{100 \times 9.8} )\\\\\theta = 32.5 ^0

Therefore, the angle of inclination of the rider to the vertical is 32.5⁰

3 0
3 years ago
Which medium is more denser diamond or water
kenny6666 [7]
Diamond, it's just asking if it's heavier than water
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3 years ago
The Hoover Dam produces electricity which powers parts of Nevada and California. It is made up of 17 generators, each of which p
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Given voltage and current, the power may be calculated by multiplying them. 
                                     P = V x I
Substituting the given values above,
                                     P = (1.60 x 10^4) x (7.40 x 10^3)
The numerical value of the operation above is 118400000 watts. Thus, the answer is letter C. 
6 0
3 years ago
Read 2 more answers
A rock is thrown with a force of 500 N and an acceleration is 75 m/s^2. What is its mass?
lora16 [44]

Answer:

<h2>6.67 kg</h2>

Explanation:

The mass of the rock can be found by using the formula

m =  \frac{f}{a}  \\

f is the force

a is the acceleration

From the question we have

m =  \frac{500}{75}  =  \frac{20}{3}  \\  = 6.66666...

We have the final answer as

<h3>6.67 kg</h3>

Hope this helps you

7 0
2 years ago
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