Download Practice Exam 3 Qs | PHYS 140 - How Things Work and more Quizzes Classical Physics in PDF only on Docsity!
As long as a pendulum does not swing too high the time it takes the pendulum to complete one full oscillation will be independen both the amplitude of the motion and the weight of the ball. TERM 2 two sound generators are configured so that each one produces a pure tone, but the frequency of the two tones are not identical DEFINITION 2 The pitch will begin to modulate and sound like beating TERM 3 How does the global positioning system measure your location? DEFINITION 3 Your GPS receiver uses precise timing to measure the distance to three GPS satellites and infers your position from the distance to the three satellites. TERM 4 How are standing waves and traveling waves different? A particle riding a traveling wave can... DEFINITION 4 have a nonzero average velocity perpendicular to the wave displacement. TERM 5 Closing one end of an organ pipe makes the frequency of the note it produces DEFINITION 5 go down by an octave (its frequency will decrease by a factor of 2)
What is the frequency of a vibration with period 0.01 second? 100 Hertz Frequency = 1/period TERM 7 You stick two pieces of adhesive tape on a glass window and then pull them off suddenly. If you now hold the tape pieces near e DEFINITION 7 repelled because they have like charges. TERM 8 A positively charged object is able to attract DEFINITION 8 both negatively charged and neutral objects. TERM 9 Radio waves travel through empty space.. DEFINITION 9 At the speed of visible light TERM 10 You are walking on a carpet in your socks during the winter. What can you do to keep yourself from getting shocked when you tou DEFINITION 10 Hold a pin in your hand so that the corona can dissipate charge into the air.
When you send current through a resistor, that current always experiences a voltage drop, never a voltage rise. One way to unde it is easy to turn electric energy into thermal energy but not the other way around. TERM 17 A rocking chair has damaged the cord of your desk lamp. One of the two wires in the cord is completely cut in half and cannot ca DEFINITION 17 no current will flow through either wire and the lamp will remain dark. TERM 18 what happened when you put a radio inside a Faraday Cage, and why DEFINITION 18 The radio signal went away because the copper cage blocked all incoming radio waves. TERM 19 When you drop the north pole of a permanent magnet onto an aluminum sheet, it falls slightly slower than normal. The magnet is b DEFINITION 19 current induced in the aluminum by the approaching north pole produces a repelling north pole on the aluminums surface. TERM 20 Edison was unable to use transformers in his direct current (DC) electric power systems because DEFINITION 20 a transformer requires changing currents in its coils in order to transfer power between those currents.
A tank circuit switches energy stored between electric in the.. capacitor and magnetic in the inductor. TERM 22 A guitar string that normally vibrates with a fundamental frequency of 110 Hz is also capable of vibrating at 330 Hz. When that DEFINITION 22 as 3 strings that are each one third as long as the overall string. TERM 23 Magnetism is created by DEFINITION 23 moving electric charges. TERM 24 A transformer can keep the _______ constant while changing the _______ and ______. DEFINITION 24 power, current and voltage TERM 25 A mile away your friend simultaneously turns on three transmitters, one radiating ultraviolet waves, one radiating infrared wave DEFINITION 25 They all arrive at the same time
As you crank a generator in a circuit with a lightbulb, what will happen if the light bulb is removed? It became easier to crank because no current was flowing in the circuit leaving the magnet to move with less resistance. TERM 32 How does an electromagnet work? DEFINITION 32 Current flowing through a coil induces a magnetic field. TERM 33 What is necessary for simple harmonic motion to take place? DEFINITION 33 A restoring force that is proportional to displacement is necessary for simple harmonic motion. TERM 34 You shuffle your feet on the carpet on a winter day and build up charge on your body. Where does that charge reside? DEFINITION 34 The charge resides on the surface of your body because like charges repel one another. TERM 35 You have two oppositely charged balloons that are close to one another. Without changing the charge, you move the balloons fart DEFINITION 35 The voltage increases because you did work on the balloons to separate them.
One tone is 200Hz and another tone is 800Hz. The two tones are _____ octaves apart. 2 each time you go up an octave you multiply the tone by 2.. so 200Hz * 2 = 400Hz * 2 = 800Hz.. 2 octaves TERM 37 Why can a bird land safely on a power line? DEFINITION 37 The resistance of the bird is much higher than the resistance of the power line. TERM 38 A sound wave is DEFINITION 38 a longitudinal pressure wave TERM 39 Which material is piezoelectric? DEFINITION 39 quartz TERM 40 In further studying physics, you learn that light and particles have a dual nature, with light behaving like particle and vice v DEFINITION 40 photon
