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A standing wave pattern on a string is described by y(x,t) = 0.050 sin(9πx) cos(20πt), where all lengths are in meters, and t is in seconds. 1.If there is a node at x = 0, what is x at the second node? 2.What is x at the third node? 3.What is the period of the oscillatory motion for any (nonnode) point on the string? 4.What is the speed of the two traveling waves that interfere to produce this wave? 5.What is the amplitude of the two traveling waves that interfere to produce this wave? 6.What is the earliest nonnegative time at which all the points on the string have zero transverse velocity? 7.What is the next time at which all the points on the string have zero transverse velocity? 8.What is the third time at which all the points on the string have zero transverse velocity?
To recharge a 10 V battery, a battery charger must move 3.7 105 C of charge from the negative terminal to the positive terminal. How much work is done by the charger
A 6-kg bucket of water is being pulled straight up by a string at a constant speed. What is the tension in the rope
A defibrillator is used during a heart attack to restore the heart to its normal beating pattern. How many electrons pass through the wires connected to the patient
A 650 kg weather balloon is designed to lift a 4600 kg package. What volume should the balloon have after being inflated with helium 0 degrees Celsius and 1 atm pressure to lift the total load.
A sample has a activity of 0.0021 Bq per gram of carbon. Find the age of the sample, assuming that the activity per gram of carbon in a living organism has been constant at a value of 0.23 Bq
Choose the correct explanation for why you can determine the maximum load given that theta_min is the minimum angle crane arm can make with the horizontal.
A hot (70 C) lump of metal has a mass of 250 gm and a specific heat of .25 cal/gm-C. John drops the metal into a 500 gm calorimeter (specific heat of .10 cal/gm-C) containing 75 g of water at 20 C. Once they reach equilibrium, what will be the fin..
a fly beats its wings at a frequency of 1200 Hz. if the expansion and contraction of the wing muscles of the fly exhibits simple harmonic motion, what is the time period of a single beat of the flys wings
At the instant before a particle collision at the Belle Experiment, an electron is moving north with a total energy of 8 GeV, find the speed of the electron as seen by the positron
A man is racing with his son has half the kinetic energy of the son, who has half the mass of the father. What is the original speed of the Man
Tarzan, who weighs 900N, swings from a cliff at the end of a 40.0 m vine that hangs from a high tree limb, What is the magnitude of the tension on the vine
Explain how much force must you exert to keep the pole motionless and horizontal?
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