Answer:
The center of mass for the object is from the origin
Explanation:
From the question we are told that
The mass of the first object is
The position of first object with respect to origin
The mass of the second object is
The position of second object with respect to origin
The mass of the third object is
The position of third object with respect to origin
The mass of the fourth object is
The position of fourth object with respect to origin
Generally the center of mass of the object along the x-axis is zero because all the mass lie on the y axis
Generally the location of the center mass of the object is mathematically represented as
=>
=>
Potential energy U = mgh
Given h = 123 m,
mg = F = 780 N
Then
U = (123)(780)
= 95940
= 9.59 x 10^4
Answer:
Explanation:
The work W required for the transfer is equal to the energy difference
where q is the charge we want to transfer and ΔV is the potential difference.
So, the work needed will be
Now, the average power is:
As the Watt is Joule/second, we need the 45 min multiplied by 60:
Taking all this together:
or