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3 years ago

an rlc series circuit has a 40.0 resistor,a 3.00 mH inductor, and a 5.00 capacitor, (a find the circuits impendance at 60.0 Hz

Physics

1 answer:

Gelneren [198K]3 years ago

7 0

Answer:

Z = 530.89 ohms

Explanation:

Given that,

Resistor, R = 40 ohms

Inductor, L = 3 mH

Capacitor, C = 5 μF

We need to find the impedance of the circuit at frequency of 60 Hz. For a series LCR circuit, its impedance is given by the formula as follows :

$Z=\sqrt{R^2+(X_L-X_c)^2} \\\\Z=\sqrt{R^2+(2\pi fL-\dfrac{1}{2\pi fC})^2} \\\\Z=\sqrt{(40)^2+(2\pi \times 60\times 3\times 10^{-3}-\dfrac{1}{2\pi \times 60\times 5\times 10^{-6}})^2} \\Z=530.89\ \Omega$

So, the impedance of the circuit is 530.89 ohms.

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A system initially has an internal energy U of 504 J. It undergoes a process during which it releases 111 J of heat energy to th

Likurg_2 [28]

Answer:

615 J

Explanation:

internal energy (U) = 504 J

heat lost (q) = 111 J = - 111 J (negative sign is because heat is lost)

work done = 222 J

what is the final energy in the system

total energy = final energy - initial energy

final energy = total energy + initial energy

where

initial energy = 504 J

total energy = 222 - 111 = 111 J

final energy = 504 + 111 = 615 J

6 0

3 years ago

A hot-air balloon is rising straight up with a speed of 4.6 m/s. a ballast bag is released from rest relative to the balloon at

kherson [118]

The time taken by the ballast bag to reach the ground is 2.18 s

The ballast bag at rest with respect to the balloon has the upward velocity (u) of 4.6 m/s , which is the velocity of the balloon. When it is dropped from the balloon, its motion is similar to an object thrown upwards with an initial velocity u and it falls under the acceleration due to gravity g.

Taking the upward direction as positive and the downward direction as negative, the following equation of motion may be used.

$s=ut+\frac{1}{2}at^2$

The bag makes a net displacement s of 13.4 m downwards, hence

$s=-13.4 m$

Its initial velocity is

$u=+4.6 m/s$

The acceleration due to gravity acts downwards and hence it is negative.

$g=-9.8 m/s^2$

Use the values in the equation of motion and write an equation for t.

$s=ut+\frac{1}{2} at^2 \\ -13.4=4.6t-\frac{1}{2}(9.8)t^2\\ 4.9t^2-4.6t-13.4=0$

Solving the equation for t and taking only the positive value for t,

t=2.18 s

4 0

3 years ago

I need help please please

Brut [27]

Answer:

See the explanation for the answer.

Explanation:

Question 1: Both

Question 2: E

Question 3: P

Question 4: E

Question 5: E

Question 6: Both

Question 7: E

Question 8: Both

Question 9: E

Question 10: E

Question 11: E

Question 12: Both

Question 13: The three statements that the modern cell theory made were how in all organisms the cell is the smallest living unit, how all living things consist of cells, and that all cells are "created" from already pre-existing cells.

I think that these answers are correct. I'm sorry if they aren't, I tried my best with the assignment.

Have a lovely day!

6 0

3 years ago

List three ways a a home may become more energy efficient.

Natali [406]

Answer:

1. Installing solar panels on the roof. This is an example of renewable energy, and solar panels help provide electricity for a home.

2. Using LED lights instead of traditional lightbulbs. The modern LED lights use much less electricity and function up to 90% more efficiently than the traditional lightbulbs.

3. Using rain barrels to collect water from the roof. Installing rain barrels to collect rainwater to water your plants and garden is a great way to save water and cut down on your water bill.

Hope this helps! :)

4 0

3 years ago

Which statement best describes what happens when people declare bankruptcy?

Gala2k [10]

Answer:

I believe that the answer is 4

Explanation:

When someone is bankrupt they agree not to take on more debt, Once your debt is discharged, your creditors cannot contact you or attempt to collect the debt in any way.

6 0

2 years ago