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A source emits sound of wavelength 2.54m an 2.74m in air. Use the speed of sound=343m/s. a) Write the equations of these two traveling waves in complex exponential notation as a function of wave speed and number. b) What is the sum of these two waves? c) How many beats per second will be heard? d) How far apart in space are the regions of maximum intensity? e) plot the sum of these two waves with respect to time and with respect to position and confirm your answers of c) and d).
A 2.00-mol sample of hydrogen gas is heated at constant pressure from 302 K to 414 K. Calculate the energy transferred to the gas by heat
Consider the H beta line of the Balmer series for hydrogen. Calculate the photon energy for this H beta line
A 6.00kg ball is dropped from a height of 11.0m above one end of a uniform bar that pivots at its center. The bar has mass 7.50kg, How high will the other ball go after the collision
Two cars, A and B, travel in a straight line. The distance of A from the starting point is given as a function of time by XA (t)=at+Bt^2, Which car is ahead just after they leave the starting point
What frequency is heard by an observer who hears the 450-Hz siren on a police car traveling at 35 m/s away from her
A drone, flying 300m above ground, observes a man walking on a road in a cold night (0°C). how many photons/sec does it receive from the man and from a similar surface of road
A horizontal 802-N merry-go-round is a solid disk of radius 1.44 m, started from rest by a constant horizontal force of 50.3 N applied tangentially to the edge of the disk
For a patient, a doctor prescribes glasses with a converging lens having a power of 4.0 D What is the location of her eye's near point
A street light is supported by two wires and each makes a different angle from each other. Find the tension in each wire if the street light has a mass of 60.0 kg
A person undergoing radiation treatment for a cancerous growth receives an absorbed dose of 1.8 Gy. All the radiation is absorbed by the gowth. Determine the rise in temperature
A projectile is lauched at some speed at an angle of 58 degrees and travels a range of 211 meters. find the maximum vertical displacement for the second angle
A 71.0 kg skier is pulled up a frictionless ski slope that makes an angle of 15.0 deg. Determine the magnitude of the force exerted by the rope on the skier
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