Consider a planet of mass (m) revolving around the sun, the time period (T) of revolution of the planet depends upon the mass of the sun (M), the radius of the orbit (r) and the gravitational Constant (G). Using DIMENSIONAL ANALYSIS, Verify Kepler's third law of planetary motion.​

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b.b. at twice the distance, the magnitude of the field is 2b.c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.