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3 years ago

What will happen if there is a change in a magnetic field?

2 answers:

8 0

If the magnetic field will change the electric current will also change.
Because the magnetic field relies on magnetic materials. Any deceleration of these two materials it will cause a huge effect. The earth magnetic field is protecting the atmosphere from the solar wind any sudden changes will cause navigational disaster.

enot [183]3 years ago

6 0

based off the above answer i would on plato the option is D because it would collapse.

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If an object has 180 J of PE and a mass of .5kg, what is its height?

Nonamiya [84]

PE=mgh
180=0.5*10*h
180=5h
h=180/5=36 m

7 0

3 years ago

Jasmine and her partner want to test to see if there is a relationship between how much of her solar panel is exposed to sunligh

katen-ka-za [31]

Any one trial might have been done incorrectly.

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2 years ago

if 6000j of energy is supplid to a machine to lift a load of 300N through a vvertical height of 1M calculatework out put

kari74 [83]

Answer:

300J

Explanation:

Work done = Force x the distance travelled in the direction of the force

=300 x 1

=300J

8 0

3 years ago

Two blocks on a frictionless horizontal surface are on a collision course. one block with mass 0.6 kg moves at 0.8 m/s to the ri

Elanso [62]

First we can say that since there is no external force on this system so momentum is always conserved.

$m_1v_{1i} + m_2v_{2i} = m_1v_{1f} + m_2v_{2f}$

$0.6*0.8 + 1.2*0 = 0.6*v_{1f} + 1.2*v_{2f}$

$0.48= 0.6*v_{1f} + 1.2*v_{2f}$

$0.8 = v_{1f} + 2v_{2f}$

now by the condition of elastic collision

$v_{2f} - v_{1f} = 0.8 - 0[\tex]now add two equations[tex]3*v_{2f} = 1.6$

$v_{2f} = 0.533 m/s$

also from above equation we have

$v_{1f} = -0.267 m/s$

So ball of mass 0.6 kg will rebound back with speed 0.267 m/s and ball of mass 1.2 kg will go forwards with speed 0.533 m/s.

8 0

3 years ago

Early LCD backlights use _______________ technology, popular for its low power use, even brightness, and long life.

Gala2k [10]

Answer:

cold cathode fluorescent lamp

Explanation:

A cold cathode fluorescent lamp (CCFL) is a lighting system that uses two phenomena: electron discharge and fluorescence.

CCFLs are mainly used as light sources for backlights, since they are compact and durable than ordinary fluorescent lamps. They exhibit a wide range of brightness and color (color temperature and chromaticity) that can be achieved by varying the pressure and type of the material injected into the glass tube. The thickness and type of the phosphor used to coat the inner wall of the tube also plays a role in altering the color and brightness.

8 0

3 years ago