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Liquid-detecting prism devices may be used in a washing machine or other liquid-containing devices. If no liquid covers the prism's hypotenuse, total internal refletion from the light source produces a large signal in the light sensor. If liquid covers the hypotenuse, some light escapes from the prism into the liquid and the light sensor's signal decreases. Thus, a large signal from the light sensor indicates the absence of liquid in the resevoir. If this device is designed to detect the presence of water, determine the allowable range for the prism's index of refraction n.n of water = 1.33
The prism is a 45/45/90 triangle affixed with the hypotenuse attatched to a rectangular tub of water. The light source and light sensor are underneath the prism on opposing sides.
A moving particle encounters an external electric field thatdecreases its kinetic energy from 9820 eVto 7470 eV as the particle moves fromposition A to position B. The electric potentialat A is -51.0 V, and the electricpotential at B is +28.9 V.Deter..
An electron follows a circular orbit around the nucleus of a hydrogen atom at a radius of 5 *10^11m and with aperiod of 1.4 *10^-16s. What is the magnitude of the orbital magnetic dipole moment of the hydrogen atom
A solenoid is 2.0 m long and with an inner radius of 30 cm and 1000 turns of wire. How large does the current does it carry
A light bulb is connected to a 120 V wall socket. The current in the bulb depends on the time t according to the relation I = (1.414 A) sin[ (125.6 Hz) t ]. What is the average power delivered to the light bulb
Two batteries are connected in parallel to power a wheelchair. find the current provided to the motor
Gracie slides down a frictionless slide of length L that makes an angle (theta) with the ground. (A.) Gracie starts out at rest at the top of the slide.
A loudspeaker in a parked car is producing sound whose frequency is 20930 Hz. what is the minimum speed of the moving car
A vertical spring (spring constant =175 N/m) is mounted on the floor. A 0.470-kg block is placed on top of the spring and pushed down to start it oscillating in simple harmonic motion. Obtain the frequency (in Hz) of the motion
You are in a kayak which can move at a velocity of 4 m/s when in still water. You are attempting to cross a river which is 103 across, How long does it take you to get to the other side
An electromagnetic wave in a vacuum has a magnetic field with a magnitude of 1.4 10-6 T. What is the intensity S of the wave
The maximum acceleration of a fast freight elevator is 4.5 m/s2. The maximum load of the elevator is 6,651 kg, and the elevator has a mass of 466 kg. If a steel cable is to be used suspend the elevator, what should the minimum diameter be? The elasti..
A hot-air balloon is rising upward with a constant speed of 2.68 m/s. When the balloon is 5.62 m above the ground, How much time elapses before the compass hits the ground
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