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A container of 1m^3 contains one cubic meter of liquid water at a temperature of 0 degrees Celsius. The walls of container are perfectly conductive and are coated with a material that has emissivity equal to 1
a. calculate heat current in radiation leaving the cube
b. how long will it take for one cubic meter of water to freeze completely
c. if volume of cube were cut i hal, would that change the time required for water to completely freeze?
An object with a mass of m = 4.9 kg is attached to the free end of a light string wrapped around a reel of radius R = 0.265 m and mass of M = 3.00 kg. Determine the magnitude of the acceleration of the object
a block is being moved up a 60.0deg incline as shown in the figure above. the block has a mass of 16.0 kg. the block is
A spring whose spring constant is 750 N/m is compressed by 15 cm from. 10 kg ball. How high will the ball go in the air
An iron tower in is 399 meters tall on a cold day (T = -6.7 degrees Celsius). What is its height of the tower on a hot day while the temperature is 31.5 degrees Celsius.
An electron in an oscilloscope is accelerated as a result of the potential difference between the cathode and anode. Find the voltage drop from cathode to anode
How to calculate the efficient canyon albedo
A novice skier, starting from rest, slides down a frictionless 35° incline whose vertical height is 118 m. Explain how fast is she going when she reaches the bottom? Illustrate what was the initial speed of the arrow?
questiontwo hockey players aaron and brunnhilde are pushing two pucks on a frictionless ice rink. the pucks are at
a thin lens of focal length 30.0 cm and is used to form an image that is twice the size of the object. Find the object position
A loudspeaker of mass 25 {rm kg} is suspended a distance of h = 1.60 {rm m} below the ceiling by two cables that make equivalent angles with the ceiling. Each cable has a length of l = 3.50 {rm m}.
Two capacitors, C1 = 4.00 µF and C2 = 13.0 µF, are connected in parallel, and the resulting combination is connected to a 9.00-V battery. Find the equivalent capacitance of the combination
A capacitor is discharged when a wire is connected across its terminals, How much energy is released for a 1.00 uF capacitor with 10.0 V across its plates
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