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True [87]
3 years ago
7

Which of the following does not change the resistance of a wire?

Physics
1 answer:
ivanzaharov [21]3 years ago
3 0
Number 1. The medium around the wire
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Explain how the theory of the Sun’s dynamo results in an average 22-year solar activity cycle. Include the location and mechanis
horrorfan [7]

Answer:

Explanation:

Sun's dynamo means the process that produce Sun's magnetic field.

The mechanism inside a Sun acts like a generator that produces electric current and magnetic field.

Magnetic field with in the Sun are extended out and around. Magnetic field of lines get twisted due to rotation of Sun.

The material that flows inside the Sun plays an important role in Sun's dynamo. At surface the flow rate is about 20 m/s but as it moves towards equator, it becomes way too slow taking about 11 years of time.

Due to the this magnetic field, several sun spots are formed on the surface.

The number of sunspots keep on changing from minimum to maximum number resulting into change in the magnetic pole. In each cycle polarity get reversed hence the overall magnetic cycle has an interval of 22 years.

5 0
3 years ago
the earth has more rotational kinetic energy now than did the cloud of gas and dust from which it formed. where did this energy
goldfiish [28.3K]

Explanation:

Earth or any planet are actually born from huge clouds of gas and dust. Their stellar mass are fairly distributed at a radius from the axis of rotation. Gravitational force cause the cloud to come together. Now the whole gathered in smaller area. Now, individual particles come close to the roational axis. Thus, decreasing the moment of inertia of the planet.

As

I=mr^2

reducing r reduces I. However, the angular moment of the system remains always conserved. So, to conserve the angular momentum the angular velocity of the planet increases and so did the  otational kinetic energy

3 0
3 years ago
3. At an early age, what happened to Cesar’s home?
Doss [256]

Answer: He died later in 78 BC and was accorded a state funeral. Hearing of Sulla's death, Caesar felt safe enough to return to Rome. Lacking means since his inheritance was confiscated, he acquired a modest house in the Subura, a lower-class neighbourhood of Rome. hope this helps. Can u give me brainliest

Explanation:

3 0
3 years ago
What is surface tension and what phase of matter creates it?
hram777 [196]

Answer:

The property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules.The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension.

If i'm wrong correct me.

4 0
3 years ago
What type of electromagnetic wave does a cloud fall under?
slava [35]
The answer is a cloud
3 0
3 years ago
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