An isolated conducting rod of length 8.00 cm is oriented parallel to the x-axis. It moves in the +y-direction at 3.90 m/s in the presence of a uniform magnetic field of magnitude 0.600 T that points in the -z-direction. Find the magnitude of the motional emf in the rod. Express your answer with the appropriate units.

If it takes a planet 2.8 x 10^8 s to orbit a star with a mass of 6.2 x 10^30 kg what is the average distance between the planet and the star

Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.

How much energy will be transferred to your eardrum while listening to this sound for 1.0 min?