Answer:
(d) 2930 lbs
Explanation:
Given:
Force acting in the westerly direction is,
Force acting in the northerly direction is,
Now, as the two given directions are at right angles to each other, the angle between the two force vectors is 90 degrees.
So, when two vectors are at right angles, their resultant magnitude is given as:
Plug in the given values and solve for resultant 'R'. This gives,
Therefore, the magnitude of the resultant force upon the piling is 2930 lbs.
So, option (d) is correct.
As we know that induced EMF is given by rate of change in magnetic flux
so here we can say
here we know that
so here we can say
now by relation of EMF and electric field we can say
now plug in all values
r = 2.5 cm
f = 17 Hz
so electric field is given as E = 0.085 N/C
"The potential on the surface of a conductor is always zero."
This statement is false. A good number of times we define a point's potential to be the amount of work that must be done to move 1 coulomb of charge from infinitely far away to that point. So if, let's say, the conductor had a net positive charge, then you would need to do a net positive amount of work to move 1 coulomb of charge from infinitely far away to any point on the conductor's surface. We have just provided a case for which the potential on the surface of the conductor is not 0.
You should check A, and D.
Power can be defined as the rate at which work is accomplished.
Option D is the correct answer.
<h3>
</h3><h3>
Power </h3>
The work done by an object in a given time interval is called the power of that object.
Suppose an external force F is applied to any object for the time interval T seconds. Due to this external force, the object will perform some amount of work for the time T seconds. This work W done by the object for the time interval T seconds is called the power of that object.
Power can be defined in mathematical term which is given below.
Thus the power can also be defined as the work done by the object per unit time interval.
Hence we can conclude that option D is the correct answer.
To know more about power, follow the link given below.
brainly.com/question/1618040.