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A banked curve in a road is designed so that it can be safely navigated by cars traveling at 20 m/s in icy conditions (no friction). If the road is banked at angle 15 above the horizontal, what is the horizontal of curvature for this curve?
A 12.1-kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 10.6 m/s, find the rotational kinetic energy about its center of gravity
The middle C string on a piano is under a tension of 882 N. The period and wavelength of a wave on this string are 3.82 10-3 s, Find the linear density of the string
Now suppose the gliders in the previous problem collide completely inelastically so that they stick together rather than rebounding off each other after they collide. Compare the initial and final kinetic energies
Consider an RLC circuit with driving emf amplitude %u0395m = 12 V, Find the amplitude of the voltage across the inductor at resonance
The surface temperature of the start Betelgeuse is 3500K. Assume Betelgeuse radiates as a perfect blackbody. what is the energy of each of these photons
The Calorie (or kcal) is another energy unit and is commonly used to measure food energy (as well as heat). How many Calories would you burn walking up a flight of stairs for an hour
A lead ball, with an initial temperature of 25oC, is released from a height of 101.0 m. It does not bounce when it hits a hard surface. Presume all the energy of the fall goes into heating the lead. Find the temperature (in degrees C) of the ball ..
A bacterium (mass = 2 × 10-15 kg) in the blood is moving at 0.28 m/s. What is the de Broglie wavelegth of this bacterium
A soccer player kicks the ball toward a goal that is 27.0 m in front of him. Find the speed of the ball when the goalie catches it in front of the net
Two bars of identical mass are at 32 °C. One is made from glass and the other from another substance. The specific heat capacity of glass is 840 J/(kg · C°).
In a two-slit interference experiment, with the sits 0.041 mm apart and screen at a distance 75 cm, What is the wave length of the light
a football is kicked at ground level with a speed of 18m/s at angle of 35 to the horizontal. How much later does it hit the ground
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