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jarptica [38.1K]
3 years ago
8

Rearrange the equation current = voltage/resistance to express resistance in terms of current and voltage. Then solve the follow

ing: A certain device in a 130-V circuit has a current rating of 10 A . What is the resistance of the device (how many ohms)?
Physics
1 answer:
MissTica3 years ago
3 0

Answer:

Resistance, R = 13 ohms

Explanation:

The Ohm's law gives the direct relationship between the voltage, current and the resistance of the device. The relation is as follows :

V=IR

Where

I is the current

r is the resistance

The value of resistance is given by :

R=\dfrac{V}{I}

According to given data,

Voltage of the circuit, V = 130 V

Current rating of the circuit, I = 10 A

Resistance of the device,

R=\dfrac{130\ V}{10\ A}

R = 13 ohms

So, the resistance of the device is 13 ohms. Hence, this is the required solution.

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How do you increase the amount of electrical energy produced from running water?
azamat

Answer:

To increase the volume of moving water, impoundments or dams are used to collect the water. An opening in the dam uses gravity to drop water down a pipe called a penstock. The moving water causes the turbine to spin, which causes magnets inside a generator to rotate and create electricity.

Explanation:

Hope this helped, Have a Great Day!!

8 0
3 years ago
Read 2 more answers
In 1991 at smith college, in massachusetts, ferdie adoboe ran 1.00 × 102 m backward in 13.6 s. suppose it takes adoboe 2.00 s to
Alik [6]

as it is given that it covers a total distance 1 * 10^2 m

total time taken by it = 13.6 s

now the average speed is given as ratio of total distance and total time

v = \frac{d}{t}

v = \frac{1* 10^2 }{13.6}

v = 7.35 m/s

so the average speed will be 7.35 m/s

now if it starts from rest and achieve the final speed as 7.35 m/s

now we can use kinematics

v_f = v_i + at

7.35 = 0 + a* 2

a = 3.68 m/s^2

so its acceleration will be 3.68 m/s^2

4 0
4 years ago
Juan and Kuri are on a carousel. Juan is closer to the center of the carousel than Kuri. Which statement describes their tangent
Licemer1 [7]

Answer:

Juan and Kuri complete one revolution in the same time, but Juan travels a shorter distance and has a lower speed.

Explanation:

Since Juan is closer to the center and Kuri is away from the center so we can say that Juan will move smaller distance in one complete revolution

As we know that the distance moved in one revolution is given as

d = 2\pi r

also the time period of revolution for both will remain same as they move with the time period of carousel

Now we can say that the speed is given as

v = \frac{2\pi r}{T}

so Juan will have less tangential speed. so correct answer will be

Juan and Kuri complete one revolution in the same time, but Juan travels a shorter distance and has a lower speed.

6 0
3 years ago
Read 2 more answers
Suppose a skydiver (mass = 75 kg) is falling toward the Earth. When the skydiver is 100 m above the Earth he is moving at 60 m/s
Andrej [43]

Answer:

  Potential energy = 73.575 kJ

  Kinetic energy = 135kJ

  Total mechanical energy = 208.575 kJ

Explanation:

   The potential energy of a body is given by the expression, PE = mgh, where m is the mass of the body, g is the acceleration due to gravity value and h is the height of the body.

  The kinetic energy of a body is given by KE=\frac{1}{2} mv^2, where v is the velocity and m is the mass of body.

  Total mechanical energy = Kinetic energy + Potential energy

  KE=\frac{1}{2} mv^2=\frac{1}{2} *75*60^2= 135000J = 135kJ

  PE = mgh = 75*9.81*100 = 73575 J = 73.575 kJ

  Total mechanical energy = Kinetic energy + Potential energy = 135+73.575

                                             = 208.575 kJ    

4 0
3 years ago
What is the best description of the chromosomes by the end of metaphase of mitosis?
s344n2d4d5 [400]
I did the test and the anwser is d- the chromosome pairs collect in a line across the middle of the cell
8 0
3 years ago
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