Answer:
Number of days needed = 57
Explanation:
Depth of well = 115 feet
Distance traveled in day = 3 feet up
Distance traveled in night = 1 feet down.
Total displacement in 1 day = 3 - 1 = 2 feet up
When the snail reaches 112 feet up, the next 3 feet up motion on day will make it reach the top.
After 56 days the displacement of snail is 112 feet.
On the next day it moves up by 3 feet and reaches out of well.
Number of days needed = 57
Answer:
The magnetic field required is
Explanation:
From the question we are told that there was a change in electric field with respect to time , this change can be mathematically represented as
from the question
Now substituting this into the equation
Maxwell state mathematically that
=>
Where is the length which is mathematically represented as
And S is the the surface area which is mathematically represented as
And
i.e and the value of the speed of light is
Now substituting these into the equation
From the question we are told that the diameter
The radius would be
Substituting in to the formula for B