Answer:
(a) The least time required for the rotation is 50 seconds
(b) The corresponding value of α₁ is 1.6 rad/s²
Explanation: Please see the attachments below
Answer: The magnetic field is 4×10^-4T
Explanation:
Using the magnetic field equation
B=μI/2πr
B= magnetic field =?
l= current in the wire=2.0A
r= distance from the axis of wire=1.0mm= 0.001m
μ=magnetic permeability =4π×10^-7N/m
B= (4π×10^-7 × 2.0)/(2π × 0.001)
B= 4×10^-4T
Therefore the magnetic field is 4×10^-4T
Answer:
Zero...
Explanation:
When the glass road is rubbed with silk clothes, it get charged positively. When it made contact with the metallic rod, the positive charge is transferred to the metallic rod (The wooden post will have no effect because it doesn't interact with charge on metals). When the metallic rod make contact with ground with intact glass rod, all the charge transfers to the ground because of the high negative potential of Earth, So, in the end all the net charge become zero.
Answer:
Oceanic crust moves easly. Continental crust does not move