Answer:
option D
Explanation:
Sunspots are the spot that appears on the sun, this spot appears darker than the surrounding surface of the sun.
Sun magnetic field goes through a cycle and this cycle is called the Sunspot cycle. Every 11 years the magnetic field of the sun completely flips. This sunspot cycle affects activity on the surface of the sun.
Sunspot cycle is the pattern of solar activity where an average number of sunspot gradually increase and decrease.
Hence, the correct answer is option D
False, rubber is a poor conductor but is a good insulator.
It increases
Explanation:
A circuit's resistance increases as more resistors are added to it in series.
Series connection of circuit provides an additive increase in the resistance offered by the overall circuit.
A resistor is a device in a circuit that impedes the flow of electric current. It simply uses electric current.
Examples are bulbs, radio, television.
The more of these devices connected one to another in series, the more the resistance increases.
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Answer:
0.78333 m/s in the opposite direction
1.566 m/s in the same direction
Explanation:
= Mass of penny = 0.0025 kg
= Mass of nickel = 0.005 kg
= Initial Velocity of penny = 2.35 m/s
= Initial Velocity of nickel = 0 m/s
= Final Velocity of penny
= Final Velocity of nickel
As momentum and Energy is conserved
From the two equations we get
The final velocity of the penny is 0.78333 m/s in the opposite direction
The final velocity of the nickel is 1.566 m/s in the same direction
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Physics is an important element in the education of chemists, engineers and computer scientists as well as practitioners of the other physical and biomedical sciences .
