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3 years ago

6

As amplitude of a wave increases, the

1 answer:

agasfer [191]3 years ago

7 0

i think so it is frequency

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A circular loop (radius of 20 cm) is in a uniform magnetic field of 0.15 T. What angle(s) between the normal to the plane of the

Wittaler [7]

Answer:

The angle other than 90 degrees would result in magnetic flux of non zero magnitude.

Explanation:

The magnetic flux through a given closed area is equal to $\underset{B}{\rightarrow}.\underset{A}{\rightarrow}$ .

Where $\underset{B}{\rightarrow}$ is the magnitude of magnetic flux through loop .

$\underset{A}{\rightarrow}$ is the area vector of the given loop .

We know that $\underset{B}{\rightarrow}.\underset{A}{\rightarrow}$ = $\left | A \right |\left | B \right |\cos \theta$ ,

Where $\theta$ is the angle made by magnetic field with area vector.

Area vector of a closed loop is always normal to the plane of the loop .

So from above equation we can deduce that

$\theta = \cos^{-1}\frac{\phi }{\left | A \right |\left | B \right |}$

$\phi$ is the magnitude of magnetic flux which is non zero when $\theta$ not equal to 90 degrees.

8 0

3 years ago

In an oscillating series RLCcircuit, with a 6.13 Ω resistor and a 15.2 H inductor, find the time required for the maximum energy

ivanzaharov [21]

Answer:

time for maximum energy is 1.718 sec

Explanation:

Maximum energy on the capacitor is given as $=\frac{q_{max}^2}{ 2C}$

Maximum energy $= \frac{(1/6) Q_2}{2C}$

The maximum charge is given by

$q_{max} =Qe^{-Rt/2L}$

Or $\frac{q_{max}}{Q} = e^{-Rt/2L}$

Or $ln\frac{q_{max}}{Q} = \frac{-Rt}{2L}$

solving for t

$t = \frac{2L}{R}\frac{1}{2} ln( 2)$

Putting all value to get desired value

$t = ln(2)\times \frac{L}{R}$

$t = 0.693\times \frac{(15.2}{6.13} = 1.71 sec$

8 0

4 years ago

A man 6.00 ft tall approaches a street light 15.0 ft above the ground at the rate of 4.00 ft/s. How fast is the end of the man

klio [65]

Answer:

$\frac{dx}{dt} = 10 ft/s$

Explanation:

As per given figure let say the tip of the shadow is at distance "x" from the base of the lamp

so here we have

$\frac{x}{15} = \frac{x - y}{6}$

so we have

$6x = 15 x - 15 y$

$15 y = 9 x$

now we have

$5\frac{dy}{dt} = 2\frac{dx}{dt}$

$5(4) = 2\frac{dx}{dt}$

$\frac{dx}{dt} = 10 ft/s$

7 0

4 years ago

A very rare type of lightning that appears as a reddish-colored sphere is called _____.

torisob [31]

<span>A very rare type of lightning that appears as a reddish-colored sphere is called </span>A + Ball Lightening

5 0

3 years ago

Four people are pulling on a box with the forces shown below. If there are no other forces on the box, in what direction will it

vladimir2022 [97]

Answer:

go to the website jiksha

Explanation:

4 0

3 years ago