42.9°
Explanation:
Let's assume that the x-axis is aligned with the incline and the positive direction is up the incline. We can then apply Newton's 2nd law as follows:
Note that the net force is zero because the block is moving with a constant speed when the angle of the incline is set at Solving for the angle, we get
or
To solve this problem we will apply the concepts related to the induced voltage or electromotive force. Said force is equivalent to the variation of the magnetic flux over time, and in turn, said flux could be expressed in terms of the cross-sectional area and the magnetic field. Under these relationships and our values we will find the finally desired value.
The induced emf is,
We have:
And
Then
Here,
r = The distance from the axis
R = Radius of the solenoid
Rearrange for
Replacing,
i believe the answer you're looking for would likely 3.0 g because you don't need to add decimals which could like a singular digit. ex 3g
also applies for .2s i believe (don't quote me on that one)
Heart me if i helped good luck!