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Tems11 [23]
3 years ago
7

Yoon Ki investigates electromagnetic induction by moving a bar magnet into a coil of wire. His experimental setup is shown.

Physics
2 answers:
Karolina [17]3 years ago
4 0

A change that would most improve his results would be; D) Connecting the galvanometer to the coil

Snezhnost [94]3 years ago
4 0

Answer: The correct answer is "connecting the galvanometer to the coil".

Explanation:

Electromagnetic induction is the phenomenon of the production of the electromagnetic force across the conductor by changing the magnetic field.

The current can be induced by moving the conductor in the magnetic field. The current can also be induced by changing the magnetic field across the conductor.

The current will be induced into a coil of wire by moving a bar magnet into a coil of wire. It can be observed by connecting the galvanometer to the coil. The galvanometer is an instrument which shows the deflection when the current is flowing in the conductor.

Therefore, the correct option is (D).

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If you make multiple measurements of your height, you are likely to find that the results vary by nearly half an inch in either
Lisa [10]

Answer:

Height h= 1.7 m

Explanation:

Supposing we have to find height in meter.

1 feet = 0.3048 m

1 inch = 0.0254 m

Given that:

5 feet

= 5×0.3048

= 1.524 m

and 7 inch = 7×0.0254= 0.1778 m

Therefore total height of a man in meter

5 feet 7 inch = 1.5424+0.1778 =1.7 m

Height h= 1.7 m

8 0
3 years ago
Describe the wavelength of a longitudinal wave.
Lilit [14]
In Longitudinal waves, particles of the medium vibrate around their mean positions. Their amplitude of vibration is in the direction of the propagation of the wave. In transverse wave of longitudinal wave, <em>the wavelength is always the distance between two particles which are in the same phase.</em>

If we take pressure waves, (sound waves), we have pressure variations created by sound wave along its path. Pressure is maximum at compression regions and pressure is minimum at rarefaction region. In between the two, pressure of air remains as the pressure when there is no wave.

<em>The wave length is then the distance between two consecutive rarefactions or two consecutive compression regions.</em>

<em>It is also the distance traveled by the wave in one time period.</em> Time period is the time the particles in the medium take to vibrate towards the end, turn back to reach the other end of their oscillation and then reach back their position.


6 0
3 years ago
The mass of an object is 10 kg and the velocity is 4 m/s, what is the momentum?
eduard

The answer is 40 kg. m/s.

Formula for momentum:

p=mv

p=(10 kg.)(4 m/s)

So, therefore, the final answer is p=40 kg. m/s.

I hope this helped answer your question. Enjoy your day, and take care!

3 0
3 years ago
A 50kg hiker is standing on the edge of a cliff. Find the hiker’s gravitational potential energy if the cliff is 30m high.
Yuri [45]

Answer:

14700 J

Explanation:

The gravitational potential energy of an object is given by:

U=mgh

where

m is the mass

g is the gravitational acceleration

h is the height of the object above the ground

In this problem:

m = 50 kg is the mass of the hiker

g=9.8 m/s^2

h = 30 m is the heigth of the cliff

Substituting, we find

U=(50)(9.8)(30)=14700 J

3 0
4 years ago
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