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A 283 g aluminum coffee pot is filled with 650 mL of water. If the power output of the coffee pot is 750W, how long will it take room temperature (20oC) water to boil (100oC)? Aluminum has a specific heat of 0.900 J/goC.
A sealed closed tube length=1.5 m of unknown gas, frequency = 210 Hz. what is the speed of sound in that gas
A 55.6 kg child slides down a water slide with a velocity of 0.9 m/sec at the top. At the bottom of the slide, she is moving horizontally, y=1.5 meters above the water. She splashes into the water d=2 meters to the left of the bottom of the slide.
A double slit is opposite the center of a 1.7-m wide screen 1.9 m from the slits. How many fringes are visible on the screen if the slit is illuminated by 648-nm light
An inductor has an inductance of 0.069 H. The voltage across this inductor is 56 V, What is the current in the inductor
A hollow sphere of radius 0.10 m, with rotational inertia I = 0.084 kg m2 about a line during its center of mass, rolls without slipping up a surface inclined at 31° to the horizontal. At a certain initial position, the sphere's total kinetic energy ..
A machine is designed to perform a given amount of work in a given amount of time. Find the power of the second machine
A laser with wavelength d/8 is shining light on a double slit with slit separation 0.400 millimeter. Compute the wavelength of the second laser that would place its second maximum at the similar location as the fourth minimum of the first laser
A neodymium-glass laser emits short pulses of high-intensityelectromagnetic waves. What is the average power ef each pulse that passes through a 2.70 10-5 m2 surface perpendicularto the beam
three identical 6.0-kg cubes are placed on a horizontal frictionless surface in contact with one another. the cubes are
A solid cylinder of radius 'a' and mass M rolls without slipping down an inclined plane of angle α. Show that the acceleration is constant and equal to a = 2/3 g sin α.
Consider a Carnot (reversible) power cycle operating between a hot reservoir of 727°C and a cold reservoir of 27°C. calculate the total entropy change of the universe
A 57.5 kg skateboarder starts out with a speed of 1.75 m/s. He does +80.0 J of work on himself by pushing with his feet against the ground. How much has the vertical height of the skater changed
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