Answer:
6.88 m/s
Explanation:
The Conservation of Energy states that:
Initial Kinetic Energy + Initial Potential Energy = Final Kinetic Energy + Final Potential Energy
So we can write
We can cancel the common factor of 
which leaves us with
Lets solve for 
Subtract 
from both sides of the equation.
Multiply both sides of the equation by 2.
Simplify the left side.
Apply the distributive property.
Cancel the common factor of 2.
Take the square root of both sides of the equation to eliminate the exponent on the right side.
We are given 
.
We can now solve for the final velocity.
Anything multiplied by 0 is 0.
To solve this problem we will start from the given concept in which the number of turns is equivalent to the length of the thread per circumference of spool. That is:
Where,
l = length of the thread
= circumference of spool
For \phi we have that,
For l we have that
l = 62.8m
Finally the number of Turns would be,
Therefore the number of turns of thread on the spool are 1000turns.
Answer:
Explanation:
12 degree = (π / 180) x 12 radian
= .2093 radian
position of third bright fringe = 3λ D/ d where λ is wave length of light , D is screen distance and d is slit separation
given
3λ D/ d = 30 x 10⁻²
angular separation
3λ / d = .2093
from the two equation
.2093 D= 30 x 10⁻²
D = 30 x 10⁻² / .2093
= 1.43 m
Answer:
1-The study of the electromagnetic force, a sort of physical interaction that happens between electrically charged particles, is a branch of physics.
2-It is responsible for electromagnetic radiation such as light and is conveyed by electromagnetic fields made up of electric and magnetic fields. Together with the strong interaction, the weak interaction, and gravitation, it is one of the four fundamental interactions (often referred to as forces) in nature.
Explanation:
