A force of acts on O, the origin of the coordinate system. The torque about the point (1, −1) is
C.
The rms value of the electric field of the light coming from the Sun is 720 N/C. The average total energy density of the electromagnetic wave is
3.3 × 10−3 J/m3
4.58 × 10−6 J/m3
6.37 × 10−9 J/m3
6.37 × 10−9 J/m3
B.
4.58 × 10−6 J/m3
Angular momentum of the particle rotating with a central force is constant due to
Constant Force
Constant linear momentum
Zero Torque
Zero Torque
C.
Zero Torque
A thin circular ring of mass m and radius R is rotating about its axis with a constant angular velocity ω. Two objects each of mass M are attached gently to the opposite ends of a diameter of the ring. The ring now rotates with an angular velocity ω′
A.