Answer:
Explanation:
As we know that current density is ratio of current and area of the crossection
now we have
so the current through the wire is given as
now we have
here we have
now plug in the values in above equation
now we have
now plug in both limits as mentioned
here R = 2.11 mm
Refraction is simply the bending of light when it moves from one material into another. If light is beamed at 90° to a surface, no bending happens. But if you shine the light at an angle it will bend one way or another.
Diffraction is a process in which a beam of light travels through a gap or around a barrier, and spreads out as a result.
<span> Dispersion is the property that the speed of light in a transparent material is different for different wavelengths. Thus the index of refraction is likewise different.</span>
<u>Answer: </u>Chemical energy, electrical energy, and Mechanical energy (Kinetic energy).
<u>Explanation:</u>
When Simon puts new batteries in his radio controlled car and its controller, the<u> chemical energy to electrical energy</u> which activates the controller. The controller sends a radio signal and the car starts moving. This means that the <u>electrical energy </u> is received by the car and car starts moving. <u>The electrical energy converts into mechanical energy </u>(kinetic energy).
Answer:
Explanation:
If the maximum height attained by the rock is equal to the range of the rock
then we will say
so from this we can say
now original range is given as
now we know that for maximum possible range we need to throw at 45 degree
Answer: 384,300,000 m
Explanation:
Speed is mathematically expressed as:
Where:
is the speed of light
is the distance traveled
since is the time it takes to the pulse to go the moon and return.
Finding :
Finally: