Asolenoid with an inductance of 8 mh is connected in series with a resistance of 5 ω and an emf forming a series rl circuit. a current of 4.0 a is flowing clockwise in the solenoid at time t = 0. the current in the solenoid then grows from 4.0 a to 10.0 a in 0.2 ms. what are the value and the direction of the induced emf?

Ahollow metal sphere has 6 cm and 11 cm inner and outer radii, respectively. the surface charge density on the inside surface is −100nc/m2. the surface charge density on the exterior surface is:

The ballistic pendulum was invented in 1742 by english mathematician benjamin robins. it consists of an initially stationary pendulum that moves after being struck by a bullet, and it is used to measure the original velocity of the bullet. the known variables are the bullet's mass m, the pendulum's mass m, and the height to which the block and bullet swing, determined by the length of the pendulum l and final angle θ. two principles of physics are necessary to solve for the bullet's original velocity. what are these principles? conservation of momentum and newton's third law conservation of energy and conservation of angular momentum grade summary deductions 0% potential 100% conservation of momentum and newton's second law. newton's second law and conservation of angular momentum. conservation of energy and newton's third law conservation of momentum and conservation of angular momentum. conservation of momentum and conservation of energy conservation of energy and newton's second law.

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec