A laser is mounted on a table 1.06 m above the ground, point…

A laser is mounted on a table 1.06 m above the ground, pointed at a vertical mirror a horizontal distance 3.5 m away. The laser beam strikes the mirror 1.62 m above the ground. Behind the laser is a wall, 2.8 m from the aperture where the laser beam emerges. At what height above the ground does the reflected beam strike the wall.

A magnetic field is directed perpendicular to the plane of a…

A magnetic field is directed perpendicular to the plane of a 0.15 m × 0.3 m rectangular coil consisting of 240 loops of wire. To induce an average emf of –2.5 V in the coil, the magnetic field is increased from 0.1 T to 1.8 T during a time interval Dt. Determine Dt.