Explanation:
The primary function of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load. As a result, power supplies are sometimes referred to as electric power converters. Some power supplies are separate standalone pieces of equipment, while others are built into the load appliances that they power. Examples of the latter include power supplies found in desktop computers and consumer electronics devices. Other functions that power supplies may perform include limiting the current drawn by the load to safe levels, shutting off the current in the event of an electrical fault, power conditioning to prevent electronic noise or voltage surges on the input from reaching the load, power-factor correction, and storing energy so it can continue to power the load in the event of a temporary interruption in the source power (uninterruptible power supply).
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A scalar quantity is one in which there is no direction given.
30 Lbs would be the answer, since there is no indicator of direction.
<span>Sun at the center of the solar system is known as a
</span><span> heliocentric model
the model in which earth and planets revolve around the sun which is at the center
so i conclude option B is correct
hope it helps</span>
Answer: A
Explanation: Since particles in solids are more tightly bound together than the particles in gases, mechanical waves can propagate more quickly through solids. ... Since electromagnetic waves do not require a medium to pass through, they are faster in matter that has fewer particles.
Answer:
The size of the mirror must be half of the size of your face.
Explanation:
As we know that pocket mirror is a plane mirror, for the plane mirror, distance of a person from the mirror does not affect the image formed by mirror. But the height of the mirror must be half of the height of the person to see the whole face. It is because pocket mirror is between your head and the virtual image formed, to see the virtual image, your face rays must strike the reflecting surface, for that purpose the size of the mirror must be large enough so that your face rays can strike the reflecting surface easily.
