Answer:
The answer is A sorry if i'm wrong
Explanation:
Answer:
Please refer to the figure.
Explanation:
The crucial point here is to calculate the enclosed current. If the current I is flowing through the whole cross-sectional area of the wire, the current density is

The current density is constant for different parts of the wire. This idea is similar to that of the density of a glass of water is equal to the density of a whole bucket of water.
So,

This enclosed current is now to be used in Ampere’s Law.

Here,
represents the circular path of radius r. So we can replace the integral with the circumference of the path,
.
As a result, the magnetic field is

Weather is caused by different levels of humidity and the difference in the temperature of air which causes wind patterns. Energy from the sun evaporates the water on land. Air also heats up which brings up the water vapor to the atmosphere. This increases the humidity and the chance of rain. When hot is found near the land, this will create a high pressure which will prevent the formation of clouds and produce a fair weather.
Answer:
= 6 cm/s
Explanation:
<u><em>Given:</em></u>
Acceleration = a = 2 cm/s²
Time = t = 3s
Initial Velocity =
= 0 cm/s
<u><em>Required:</em></u>
Velocity =
= ?
<u><em>Formula:</em></u>
a = 
<u><em>Solution:</em></u>
2 = 
=>
= 2*3
=>
= 6 cm/s