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
padilas [110]
3 years ago
13

What is neccessary for a magnetic field to create electric current in a copper coil?

Physics
1 answer:
Viktor [21]3 years ago
6 0
A, Lenz' Law. There need to be a difference of flux, so if you use AC you will get a current too.
You might be interested in
A tall cylinder contains 30 cm of water. Oil is carefully poured into the cylinder, where it floats on top of the water, until t
Anastaziya [24]

Answer:

The gauge pressure is  P_g  =  2058 \ P_a

Explanation:

From the question we are told that

       The height of the water contained is  h_w  =  30 \ cm  =  0.3 \ m

        The height of liquid in the cylinder is  h_t  =  40 \ cm  = 0.4 \ m

       

At the bottom of the cylinder the gauge pressure is  mathematically represented as

        P_g  =  P_w + P_o

Where  P_w is the pressure of water which is mathematically represented as

      P_w  =  \rho_w  *  g * h_w

Now  \rho_w is the density of water with a constant values of  \rho_w  = 1000 \ kg /m^3

   substituting values

      P_w  = 1000 *  9.8 *  0.3

     P_w  =  2940 \  Pa

While P_o is the pressure of oil which is mathematically represented as

          P_o  =  \rho_o *  g *  (h_t -h_w )

Where \rho _o is the density of oil with a constant value

         \rho _o  = 900 \ kg / m^3

substituting values

       P_o  =  900 *  9.8 * (0.4 - 0.3)

       P_o  =  882 \ Pa

Therefore

      P_g  =  2940 - 882

      P_g  =  2058 \ P_a

6 0
3 years ago
A politician running for office tells a crowd at a rally that the only way to keep the food chain safe is to stop allowing the g
olasank [31]

Answer:

B. No. He presented no scientific data to support his claim.

6 0
3 years ago
What is its maximum altitude above the ground? The answer is the maximum height above the ground
Kisachek [45]

Answer:

Maximum altitude above the ground = 1,540,224 m = 1540.2 km

Explanation:

Using the equations of motion

u = initial velocity of the projectile = 5.5 km/s = 5500 m/s

v = final velocity of the projectile at maximum height reached = 0 m/s

g = acceleration due to gravity = (GM/R²) (from the gravitational law)

g = (6.674 × 10⁻¹¹ × 5.97 × 10²⁴)/(6370000²)

g = -9.82 m/s² (minus because of the direction in which it is directed)

y = vertical distance covered by the projectile = ?

v² = u² + 2gy

0² = 5500² + 2(-9.82)(y)

19.64y = 5500²

y = 1,540,224 m = 1540.2 km

Hope this Helps!!!

3 0
3 years ago
How much energy to be removed to drop the temperature of 5.7kg of wood from 20degrees to 7degrees. #100points
Neporo4naja [7]

see i was trying to figure out the answer but i didn't understand it so i took the time to research and work it out but i still didn't understand i found one that was close to it and i got the same one as the other person which is D but idk if it is that type of question if it is than it is d if not then idk

5 0
3 years ago
Read 2 more answers
T or f :static electricity constantly flows in the same direction
Kazeer [188]

Answer:

False

because I got that question and I gotted right

6 0
3 years ago
Other questions:
  • Complete the sentence. According to the law of reflection, the angle of _____ is equal to the angle of reflection.
    9·2 answers
  • A velocity selector can be used to measure the speed of a charged particle. A beam of particles is directed along the axis of th
    11·1 answer
  • What is the frequency of an ocean wave that is traveling at a speed of 45 m/s if it has a wavelength of 3 meters.
    13·1 answer
  • Which wedge requires the least amount of force to do a job ?
    9·2 answers
  • Most chemical reactions can be divided into how many main groups?
    15·1 answer
  • Areas near baton rouge louisiana recently received 36.2 cm of rain in a single day. how many meters of rain was this?
    5·2 answers
  • I NEED HELP PLEASE, THANKS! :)
    13·2 answers
  • A proposed electric vehicle makes use of storage batteries as its source of energy. Its mass is 1560 kg and it is powered by 20
    5·1 answer
  • You have the following problems and your friend gives you suggestions .work in pairs and have true conversation .Your prounction
    5·1 answer
  • What type of wave is sound?<br> a. longitudnal<br> b. surface<br> c. tranverse,<br> or d.. light ? ?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!