Aelectric field propagating in air is incident onto an perfectly conducting interface has the following phasor field in terms of the amplitude eo and the wavevector components: 1. find a phasor expression for the reflected magnetic field 2. find a phasor expression for the total magnetic field in air item find a phasor expression for the total electric field in air. 3. find a phasor expression for the current induced on the surface of the conductor. 4. find a space-time expression for the current induced on the surface of the the conductor. ind a phasor expression for the induced electric charge on the conductor 6. find a space-time expression for the induced electric charge in the conductor.

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

You and a friend (alex) are at a a tree-top adventure park .. . part of the course requires you to climb up a rope. you both climb the same rope in the same amount of time. however, the tension in the rope is greater when alex climbs. who did the most work? alex did - more tension means more force - more force means more work was done you did - less tension means less force - less force means more work was done to find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? when more work was done, the couch was moved less. when more work was done, the couch was moved further. when more work was done, the couch wasn't moved at all. when more work was done, the couch was moved the same distance.

Ameter stick is pivoted at the 0.50-m line. a 3.0-kg object is hung from the 0.15-m line. where should a 5.0-kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?