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Question: A world record was set for the men's 100 m dash in the 2008 Olympic Games in Beijing by Usain Bolt of Jamaica. Bolt "coasted" across the finish line with a time of 9.69 s. If we assume that Bolt accelerated for 2.82 s to reach his maximum speed, and maintained that speed for the rest of the race, calculate his maximum speed (in m/s) and his acceleration (in m/s2). maximum speed m/s acceleration m/s2 (b) During the same Olympics, Bolt also set the world record in the 200 m dash with a time of 19.30 s. Using the same assumptions as for the 100 m dash, what was his maximum speed for this race (in m/s)?
A thermos contains 150cm^3 of coffee at 85 celsius. To coolthe coffee, you drop two 11-g ice cubes into the thermos. What is the final temperature of the coffee
What is an angular speed about the center of mass
A microscope has an objective lens with a focal length of16.22mm and an eyepiece with a focal length of 9.60mm. what is the actual diameter of the red blood cell
What is the time constant of a 9.50 thick membrane surrounding a 4.0×10-2 diameter spherical cell? Suppose the resistivity of the cell membrane as and the dielectric constant is approximately 9.00.
A disk and a hoop of the same mass and radius are released at the same time at the top of an inclined plane. The height of the incline is 0.71m, Calculate the speed of the disk at the bottom of the inclined plane
Determine the stopping distances for an automobile with aninitial speed 90 km/h and human reaction tim of 1.0s for anaccerleration a=-4.0 and a=8.0
a cylindrical steel pressure vessel with volume 1.32m3 is to be tested. the vessel is entirely filled with water then a
An Atwood machine consists of two masses, = 6.5 and = 8.5 , linked by a cord that passes over a pulley free to rotate about a fixed axis. The pulley is a solid cylinder of radius = 0.40 and mass 0.80 .
If N is 25mm, the focal length of a certain microscope's eyepiece is 12.5 mm and the magnification of its objective lens is 50, what is the overall magnification of the microscope
A series combination of a 11 k resistor and an unknown capacitor is connected toa 11 V battery. One secondafter the circuit is completed, the voltage across the capacitoris 8 V. Determine thecapacitance of the capacitor.
darius the dare devil plans to launch his rocket car at the top a ramp inclined at 20.0 degrees to the horizontal over
The lenses of a particular set of binoculars have a coating with index of refraction n = 1.38, and the glass itself has n = 1.52. what is the minimum thickness of the coating
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