1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vinvika [58]
3 years ago
7

An ac series circuit contains a 20 ohm resistor, a capacitor of 0.75 micro farad, and an inductor of 120 mH. What frequency shou

ld be used to create a resonance condition
Physics
1 answer:
Blababa [14]3 years ago
5 0

Answer:

530.5 Hz

Explanation:

Given :

C=0.75 micro

L=120 mH

Reactance capacitor can be determined by

=\frac{1}{ wC}

where c =capacitor

= \frac{1}{w*0.75*10^-6}

Reactance inductor can be determined by

= w*L\\ = w*120*10^-3

As they are in series so ,

\frac{1}{w*0.75*10^-6}  =w*120*10^-3

On solving these value we get

w=3333.33

As we know that

f = \frac{w}{2*3.14} =

530.5 Hz

You might be interested in
A motorcycle accelerates uniformly from rest at 7.9\,\dfrac{\text{m}}{\text{s}^2}7.9 s 2 m ​ 7, point, 9, space, start fraction,
8090 [49]

Answer:

t = 3.516 s

Explanation:

The most useful kinematic formula would be the velocity of the motorcylce as a function of time, which is:

v(t) = v_0 +at

Where v_0 is the initial velocity and a is the acceleration. However the problem states that the motorcyle start at rest therefore v_0 = 0

If we want to know the time it takes to achieve that speed, we first need to convert units from km/h to m/s.

This can be done knowing that

1 km = 1000 m

1 h = 3600 s

Therefore

1 km/h = (1000/3600) m/s = 0.2777... m/s

100 km/h = 27.777... m/s

Now we are looking for the time t, for which v(t) = 27.77 m/s. That is:

27.777 m/s = 7.9 m/s^2 t

Solving for t

t = (27.7777 / 7.9) s = 3.516 s

6 0
4 years ago
One hazard of space travel is debris left by previous missions. There are several thousand objects orbiting Earth that are large
Eva8 [605]

Answer:

6666.67 Newtons

Explanation:

The formula F=ma (force is equal to mass multiplied by acceleration) can be used to calculate the answer to this question.

In this case:

  • mass= 0.1mg= 1*10^-7 kg
  • velocity= 4.00*10^3 m/s
  • time= 6.00*10^-8 s

Using velocity and time, acceleration can be calculated as:

  • a= 6.667*10^10 m/s²

Substituting these values into the formula F=ma, the answer is:

  • F= (1*10^-7)kg * (6.667*10^10) m/s²
  • F= 6666.67 Newtons of force
5 0
3 years ago
A rectangular piece of​ cardboard, whose area is 352 square​ centimeters, is made into an open box by cutting a 2​-centimeter sq
Usimov [2.4K]

Answer:

Dimension of cardboard is 22 m by 16 m

Explanation:

Given that,

Area = 352 cm²

Side of each square cutting from corner = 2 cm

Volume of box = 432 cm³

Let the two sides are x and y.

The area of the rectangular piece is

xy=352

y=\dfrac{352}{x} -------- (1)

The volume of the rectangular piece

2(x-4)(\dfrac{352}{x}-4)=432

x^2-38x+352=0

(x-16)(x-22)=0

x=16,22

Put the value of x in the equation (I)

For x = 16

y=\dfrac{352}{16}=22

For x = 22

y=\dfrac{352}{22}=16

Dimension of cardboard is 22 m by 16 m

8 0
4 years ago
How does seismic waves cause earthquakes?
Allisa [31]

Answer:

Seismic waves cause Earthquakes by shaking the ground aggressively and dangerously. These waves are usually calculated on a seismograph to calculate how hard the earthquake hit that area. A transform Boundary creates the tension when the tectonic plates gets stuck. It stays stuck for a long period of time. Then, at one point, the tectonic plates become unstuck which releases the tension into waves which are called seismic waves. Hope I answered you question.

7 0
4 years ago
Read 2 more answers
The outer shell electrons in metals are not tightly bound to the nuclei of their atoms they are free to roam throughout the mate
Yuliya22 [10]

The pumps which supplies energy to move the water from the ground to a high elevation. The charges that flow throughout the wires.

6 0
3 years ago
Other questions:
  • Identify the false statement: Select one:
    12·2 answers
  • What kind of image does the lens in a camera produce?
    14·1 answer
  • A horse pulls forward on a carriage with a given force. By Newton's Third Law, the carriage must be pulling on the horse backwar
    5·1 answer
  • An object with a mass of 78 kg is lifted through a height of 6 meters how much work is done
    8·1 answer
  • A rod of mass M and length L can rotate about a hinge at its left end and is initially at rest. A putty ball of mass m, moving w
    10·1 answer
  • A 5000-kg freight car crashes into a 10,000-kg freight car at rest. They couple upon collision and move with a speed of 2 m/s. W
    13·1 answer
  • How do waves shape Earth’s surface? HELP PLS 10 POINTS PLUS BRAINLEST
    13·1 answer
  • When drawing up liquid into a micropipette, put the tip in the liquid at a Choose... degree angle, push the plunger to the Choos
    5·1 answer
  • a test tube has a diameter of 3cm . how many turns would a piece of thread of length 90.42 make round test tube​
    15·1 answer
  • While in empty space, an astronaut throws a ball at a velocity of 9 m/s. What will the velocity of the ball be after it has trav
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!