Answer:A solenoid is a simple electromagnetic device consisting of a coiled electric wire, wrapped in a 3D circular pattern. When electric current is passed through the wire, the solenoid acts like a magnet with N and S poles at the ends of the coil.
When a ferromagnetic material rod is permanently placed inside the solenoid, the metal greatly increases the magnetic effect and becomes a permanent electromagnet. Moreover, it can also be used as an electrical switch by drawing in or pushing out a ferromagnetic material like an iron rod. Depending on the directions of the rod and the electrical current the switching action takes place.
Given figure represents the solenoid as electromagnet and the switching action.
Explanation:
Answer:
A. absorption of ultraviolet rays from the Sun
Explanation:
The thermosphere helps protect and regulate Earth's temperature by absorbing much of the UV radiation and X-rays emitted by the Sun. When the Sun is most active, the thermosphere heats up and increases in size, increasing its protective power.
Just like in the oceans, the Earth's atmosphere experiences waves and tides that help move energy within it. The winds and the general circulation of the thermosphere are strong drivers of these tides and waves.
Answer:
Explanation:
Hi!
If the crate is not sliding, its trajectory is the arc with 36.1 m radius. Then the crate has a centripetal acceleration:
The centripetal force acting on the crate is the static friction force between crate and truck. The maximum value of this force is:
The normal force has a magnitude equal to the weight of the crate:
Then the condition for not sliding is:
Does it have to do with evaporation
Answer:
Explanation:
Given that,
If the mass of a body is 15 kg and produced an 4.2 m/s², we need to find the acceleration if the mass is 10 kg and the same force is applied.
Force is given by :
F = ma
Since force is same
So, if the mass is 10 kg, acceleration is
