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riadik2000 [5.3K]
3 years ago
9

State some important uses of magnet​

Physics
2 answers:
Anastaziya [24]3 years ago
4 0
Magnets are used in magnetic compass, doorbells, refrigerators. Magnets are used in dynamos, motors, loudspeakers, microphones etc. Ceramic magnets are used in computers. Magnets are used in toys to give a magic effect.
GarryVolchara [31]3 years ago
3 0

Use of magnet:

  • Magnets are used in magnetic compass, doorbells, refrigerators.
  • Magnets are used in dynamos, motors, loudspeakers, microphones etc.
  • Ceramic magnets are used in computers.
  • Magnets are used in toys to give a magic effect.
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a heavy jar sits on top of a 3.4 m shelf with a gravitational potential energy of 180 j. What is the mass of the jar?
sp2606 [1]

Answer:

5.2941176471 kg or 5294.1 grams

Explanation:

g.p.e= mgh

g.p.e/gh=m

180j/10×3.4= m

180/34= m

5.2941 kg= m

6 0
3 years ago
A transformer is intended to decrease the value of the alternating current from 500 amperes to 25 amperes. The primary coil cont
EastWind [94]

Answer:

The number of turns in secondary coil is 4000

Explanation:

Given:

Current in primary coil I_{P} = 500 A

Current in secondary coil I_{S} = 25 A

Number of turns in primary coil N_{P} = 200

In case of transformer the relation between current and number of turns is given by,

     \frac{N_{S} }{N_{P}  } = \frac{I_{P} }{I_{S} }

For finding number of turns in secondary coil,

     N_{S} = \frac{I_{P} }{I_{S} }  N_{P}

     N_{S} = \frac{500}{25} \times 200

     N_{S} = 4000

Therefore, the number of turns in secondary coil is 4000

5 0
3 years ago
Which best compares and contrasts Banking and Investment Planning?
valina [46]

Answer:

Its C i think

Explanation:

makes the most sense

4 0
3 years ago
Define wavelength as it relates to the electromagnetic spectrum.
swat32
The electromagnetic spectrum is traditionally divided into regions of radio waves, microwaves, infrared radiation, visible light, ultraviolet rays, x rays, and gamma rays. ... Wavelength defines the distance between adjacent points of the electromagnetic wave that are in equal phase (e.g., wavecrests)
7 0
4 years ago
Read 2 more answers
Someone help please by providing work and answers please :)
cupoosta [38]
There are two ways to solve this. The longer way is to use those equations to calculate numbers for total distance.

The easier way is to find the area under the graph. That's right, AREA UNDER VELOCITY-TIME graph is the TOTAL DISTANCE travelled!

it's a shortcut.

Let's split up the area into a triangle and rectangle:

Triangle = 0.5(4-0)(10-0) = 20 m
Rectangle = (6-4)(10-0) = 20 m

Total distance = 40 m!
6 0
4 years ago
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