Answer:
15.Radiowave
16.laser is device that generates an intense beam of other electromagnetic radiation by emission of photons from excited atoms.
17.this is a laboratory instrument commonly used to display and analyse the waveformof electronic signals.
19. this is a space entirely devoid of matter.
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Answer:
D. ) The force would be zero newtons
Explanation:
Because
If you are at the center of the earth, gravity is zero because all the mass around you is pulling "up" (every direction there is up!)
So F=mg so if g is zero F is also zero
Isostasy is the concept used to explain the dynamics of the earth's upper layers. It is considered that there is a gravitational equilibrium that exists between the earth's upper most layer, the crust, and the next layer, the mantle. The crust is said to "float" on the mantle.
Therefore, in this model, the block of wood represents the crust and the water represents the earth's mantle.
A high-voltage spark is delivered to the plugs via the primary winding. The principal magnetic field of the coil increases. Zero volts are reached by the secondary voltage.
The fundamental ideas are inductance and electromagnetism. Two sets of wire windings, or coils—get it—that make up an ignition coil can be found inside. An iron core is encircled by the two windings, referred to as a primary set and a secondary set. A magnetic field is created when the battery current enters the primary windings. The magnetic field collapses over the secondary windings when a switch—the distributor points opening or an electronic trigger—interrupts the flow of battery current.
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