As shown in the figure, a laser positioned on a ship is used to communicate with a small research submarine resting on the  bottom of a lake. The laser is positioned 12 m above the surface of the water, and it strikes the water 20 m from the side of the ship. The water is 58 m deep and has an index of refraction of 1.33. How far horizontally is the submarine from the side of the ship? (Assume all numbers are accurate to three significant figures.)

A beam of light traveling in air strikes a glass slab at an angle of incidence less than 90°. After entering the glass slab, what does the beam of light do? (There could be more than one correct choice.)

Two electric charges Q A = + 1.0 μC and Q B = – 2.0 μC are located 0.50 m apart. How much work is needed to move the charges apart and double the distance between them?

A rectangular loop of wire carrying a 4.0-A current is placed in a magnetic field of 0.60 T. The magnitude of the torque acting on this wire when the plane of the loop makes a 30° angle with the field is measured to be 1.1 N ∙ m. What is the area of this loop?

When two or more capacitors are connected in series to a battery,

A negatively charged rod is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charged

A vertical wire carries a current straight down. To the east of this wire, the magnetic field points

A solenoid with 400 turns has a radius of 0.040 m and is 40 cm long. If this solenoid carries a current of  what is the magnitude of the magnetic field near the center of the solenoid? ( μ 0 = 4 π × 10 -7 T ∙ m/A)

The phase angle of an  LRC series circuit with a capacitive reactance of 40 Ω, a resistor of 100 Ω and a certain inductor at 1000 Hz is 40.0°. What is the value of the inductance in this circuit? [BLANK-1]

A circular loop of wire of radius 10 cm carries a current of 6.0 A. What is the magnitude of the magnetic field at the center of the loop? ( μ 0 = 4 π × 10 -7 T ∙ m/A)