Answer with Explanation:
We are given that
Force acts on a pebble= N
Position vector= m
a.We have to find the resulting torque on the pebble about origin.
Torque=
Substitute the values then we get
Torque=N-m
By using
b.
Torque about point (2,0,-3)
N-m
Answer:
Magnetic field, B = 0.88 T
Explanation:
It is given that,
The dimension of rectangular surface is 2.80 cm by 3.15 cm. The area of rectangular surface is,
Angle between the uniform magnetic field and the horizontal,
Magnetic flux,
Let B is the magnitude of magnetic field in which the rectangular surface is placed. It is given by :
is the angle between magnetic field and the area
Here,
B = 0.88 T
So, the magnitude of magnetic field is 0.88 T. Hence, this is the required solution.