Answer:
Down.
Explanation:
In the given question, the charged particle is moving towards the east direction. Suppose east direction towards the positive x-axis.
And the magnetic field directed towards to the north direction. Suppose north direction towards the positive y-axis.
Therefore force of magnetic field can be calculate by the formula,
Therefore force of the magnetic field is in positive z-axis means in an upward direction.
Now the force on the electric field must be in the opposite direction means it is in a downward direction.
Answer:
Explanation:
The minimum total work is the work needed to counteract the work associated with the weight:
Answer:
D.) All people can mate with one another and have children
Explanation:
Answer:
Answered
Explanation:
A) The work done by gravity is zero because displacement and the gravitational force are perpendicular to each other.
W= FS cosθ
θ= 90 ⇒cos90 = 0 ⇒W= 0
B) work done by tension
W= Tcosθ×S= 5cos30×2.30= 10J
C) Work done by friction force
W= f×s=1×2.30= 2.30 J
D) Work done by normal force is Zero because the displacement and the normal force are perpendicular to each other.
E) The net work done= Work done by tension in the rope - frictional work
=10-2.30= 7.7 J
