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How long would it take a 750W electric heating plate to bring one liter of water to boil from 20 degrees celcius? If energy costs $0.15/kWhr, how much does it cost to boil the water?
Scientists plan to release a space probe that will enter the atmosphere of a gaseous planet. What is the approximate temperature at this altitude
A concave mirror has a focal length of 16 cm. The mirror forms an image located 36 cm in front of the mirror. What is the magnification of the mirror
question an aluminum baseball bat has a length of 0.81 m at a temperature of 20degc. when the temperature of the bat is
question a -4.0-microc charge is situated at the origin of an xy-coordinate system. what is the magnitude and direction
The right-side rearview mirror of Mike's car says that objects in the mirror are closer than they appear. What is the focal length of the rearview mirror
A vertical spring of spring constant 140N/m supports a mass of 80g. The mass oscillates in a tube of liquid. Estimate the damping constant b
at an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. people sit in
the distance between the slits in the two-slit experiment is 1.50 x 10^ -5 m. What is the distance on the screen between the central bright fringe and the 4th order bright fringe
Suppose Fuzzy, a quantum-mechanical duck, lives in a world in which h = 2?J · s. Fuzzy has a mass of 1.80 kg and is initially known to be within a pond 1.00 m wide. What is the minimum uncertainty in the duck's speed
Luigi wishes to suspend a lantern of mass m between his store and a telephone pole. THe cable attached to his store makes an angle (theta) to the wall. The cable to the telephone pole is horizontal.
The punter on a football team tries to kick a football so that it stays in the air for a long "hang time". If the ball is kicked with an initial velocity of 25.0 m/s at an angle of 60.0 degrees above the ground, illustrate what is the "hang time"?
Suppose that the aluminum cup inside a calorimeter has a mass of 48 g and contains 84 g of water. Both the cup and water are initially at a temperature of 5.6 degrees C, what is your best estimate of the specific heat of the aluminum
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