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The length of a beam increases by 1.35mm when its temperature is raised from 37.83oC to 96.34 oC. What is the length of the beam at the initial temperature? The thermal expansion coefficient of the material is 0.00005 /oC.
A paperweight, when weighed in air, has a weight of W = 7.4N. When completely immersed in water, though, it has a weight of Win water = 4.40 N. Find the volume of the paperweight.
A car in stop-and-go traffic starts at rest, moves forward 19 in 8.0 , then comes to rest again. The velocity-versus-time plot for this car is given in the figure. What distance does the car cover in the first 4.0 seconds of it motion?
A boy uses a slingshot to launch a pebble straight up into the air. The pebble reaches a height of 24.0 m above the launch point 2.3 seconds later, What was the pebble's initial speed
The speed of sound in air at 20 C is 344m/s. How many milliseconds does each vibration take
compute the electric flux through a rectangular plane.
A certain musical instrument is a tube with one end open and the other end closed. The second-lowest frequency that it can play is 1500 Hz. What is the fundamental frequency
A sodium surface, which has a work function of 2.46eV is illuminated with a wavelength = 300nm light. What is the deBroglie wavelength of these electrons
A 60-V generator supplies 4.5 kW of power. How much current does the generator produce
Two shuffleboard disks of equal mass, one orange and the other green, are involved in a perfectly elastic glancing collision. Determine the speed of each disk after the collision
An Escort and a Camaro traveling at right angles collide and stick together. The Escort has a mass of 1200 kg and a speed of 30 km/h in the positive x direction before the collision. What was the speed of the Camaro
The Crab Nebula is a supernova remnant 6500 light years away from Earth. Records from the Chinese indicate that they observed this supernova to occur in the year 1054.
Calculate the pressure on the top lid of a chest buried under 3.65 meters of mud with density 1.75 103 kg/m3 at the bottom of a 11.5-m-deep lake
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