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Preliminary Questions
1. Give the relationship between a wave's velocity, frequency, and wavelength. Show that this equation is dimensionally correct. Note that a graph of lambda vs. L/f should be a straight line. What are its slope and y-intercept?
2. Sketch the waves (using the method outlined in the Physical Principles section) corresponding to the lowest three frequencities of vibration of the 30 cm air column shown below. What is the wavelength of the standing wave in each case? If the speed of sound in air is 331 m/s, what frequency is heard from each pipe?
Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angle of 25.7° above the horizontal, What is the magnitude of the net torque exerted on the branch by the children
A 400g mass on a spring has a speed of 95.4cm/s when it's displacement is 3.0cm and 71.4 cm/s when it's displacement is 6.0 cm what is the maximum speed of the mass?
So as to simulate weightlessness for astronauts in training, they are flown in a vertical circle. If the passengers are to experience weightlessness, how fast must an airplane be moving at the top of a vertical circle with a radius of 1545 m.
A bird sits on a high-voltage power line with its feet 5.2 cm apart. What is the potential difference between the bird's feet
Tendons are strong elastic fibers that attach muscles to bones. To a reasonable approximation, they obey Hooke's law. How much energy is stored in it at that point
Object A of mass 1 kg and velocity 10 m/s east collides with object B of mass 2 kg and veocity 8 m/s south. What is the velocity of object B after the collision
An Atwoods machine is made with masses M1=100g, M2= 120g, and pulley mass of 100g. What is the percent error in acceleration
question1a relaxed biceps muscle requires a force of 25.0n for an elongation of 3.0 cm below maximum tension the same
In a location where the speed of sound is 354 m/s, a 2000 Hz sound wave impinges on two slits 30cm apart. At what angle is the first maximum located? If the sound wave is replaced by 2.00cm microwaves, what slit separation gives the same angle for th..
A sprinter running a 100 m dash leaves the starting block and accelerates to a maximum velocity of 11m/s at 6s into the race. What was the sprinter's average acceleration during the first 6s of the race
Compare the speed of sound following from that slope to the calculated speed of sound from the gas properties
A generator driven by a diesel engine that develops 12 hp delivers 28 A at 240 V. What is the efficiency of the generator
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