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Biology

1 answer:

ruslelena [56]3 years ago

8 0

Answer:

16.Difference between a Bar Magnet and a Solenoid

The bar magnet is a permanent magnet whereas a solenoid is an electromagnet ie, it acts like a magnet only when an electric current is passed through. ... The poles of the bar magnet are fixed whereas for a solenoid the poles can be altered.

17.When you press a doorbell button, you complete an electrical circuit that allows household electricity to flow through the doorbell's internal electromagnet. The magnetic field generated by the electromagnet is then used to power a mechanism that creates the doorbell sound. Doorbells are low-voltage devices.

Explanation:

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What two processes ensure genetic diversity and offspring cells during meiosis

lianna [129]

Answer:

Crossing Over and Independent assortment

Explanation:

8 0

3 years ago

object forms when a supergiant runs out of fuel?a red giant a black hole a white dwarf a neutron star

LenKa [72]

<u>ANSWER:</u>

When a supergiant runs out of fuel, the object formed is either a black hole or a neutron star.

<u>EXPLANATION:</u>

Supergiant are very large stars in the galaxy that end their lives very quickly.

When a supergiant star loses its fuel, it blows itself by a supernove explosion.

When supernove explosion happens, the supernova outshines other stars in the galaxy and then slowly faded away leaving a dense object called black hole or neutron star.