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A black thin-walled cylindrical can, 10.0 cm in diameter and 20.0 cm tall is filled with water at 100°C and suspended in a 20°C room. Determine the initial rate of heat transfer due to radiation, and the initial rate of change of temperature of the water. (Neglect any calorimetric effects of the can)
An opera singer in a convertible sings a note at 419 Hz as cruising down the highway at 81.0 km/hr. What is the frequency (in Hz) heard by a person standing beside road in front of the car? suppose that the speed of sound is 343 m/s.
A playground merry-go-round has a radius of 4.60 {rm m} and a moment of inertia of 250 kg m^2 and turns with negligible friction about the vertical axle through its center.
The position function x(t) of a particle moving along an x axis is x = 4.0 - 4.5t2, At what positive time does the particle pass through the origin
A typical Major League fastball is thrown at about 99 mph and with a spin rate of 103 rpm. If the distance between the pitcher's point of release and the catcher's glove is exactly 65.5 ft, how many full turns does the ball make between release and c..
Illustrate what is the average emf that is induced in this coil if it is in a region where B=2.0 T upward, and the coil's plane is perpendicular to B?
A jeweler examines a diamond with a magnifying glass. find the angular magnification when the diamond is held 5.39cm from the magnifying glass
A shot fired with a velocity 100 m/s on a direction making an angle 60 degree with vertical. Calculate the time of flight
A uniform magnetic field B is confined to the square region with side of length 2L.
A 6 kg block, starting from rest, slides down a frictionless incline of length 2 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block 0.5 vf.
Chromium is produced by reacting with its oxide with aluminium. If 304 g of Cr2O3 and 108 g of Al completely react to form 204 g of Al2O3 how many grams of Cr are formed.
Two rectangular pieces of plane glass are laid one upon the other on a table. A thin strip of paper is placed between them at one edge, Find the angle of the wedge
The centers of a 15kg lead ball and a 50g lead ball are separated by 10cm, What is the ratio of this gravitational force to the weight of the 50g ball
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