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A 7.0cm--diameter disk emits light uniformly from its surface. 20cm from this disk, along its axis, is an 9.0cm--diameter opaque black disk; the faces of the two disks are parallel. 20cm beyond the black disk is a white viewing screen. The lighted disk illuminates the screen, but there's a shadow in the center due to the black disk. What is the diameter of the completely dark part of this shadow?
You swing a 2.80 stone in a circle, using the full length of a thin 60.0 rope. At what speed should you swing it so its acceleration will be 9.8
Evaluate the heat loss per meter for each of the combinations you can figure out. Summarize the result in a graphical way, such as a table, such that they are easy to read and understand.
A small ball is attached to one end of a spring that has an unstrained length of 0.179 m. By how much would the spring stretch if it were attached to the ceiling and the ball allowed to hang straight down
A plane leaves the airport in Galisto and flies 165 at 68.0 east of north and then changes direction to fly 230 at 48.0 south of east, after which it makes an immediate emergency landing in a pasture.
1.at this point in the course you have been partially indoctrinated in the young-earthold-earth debate. in modulesweeks
A 50 g ball is fired horizontally with initial speed v_0 toward a 110g ball that is hanging motionless from a 1.10 m-long string. The balls undergo a head-on, perfectly elastic collision, after which the 110g ball swings out to a maximum angle the..
A skier (m=55.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. If h = 6.90 m and D = 10.4 m, determine H.
Two violinists, one directly behind the other, play for a listener directly in front of them. Both violinists sound concert A (440 Hz), What is the smallest separation between the violinists that will produce destructive interference for the listene..
how much time passes before the police car overtakes the speeder after the speeder passes (assumed moving at constant speed).
3 amperes of current flow through a wire. What net charge flows past a point in the wire each second
The length of an individual's forearm and hand is 30.0 cm and the mass of an individual's hand and forearm is 1.50 kg. Calculate the moment of inertia of the hand and forearm about a mediolateral axis through their combined COM
On a cloudless day, the sunlight that reaches the surface of the earth has an intensity of about 1.5 × 103 W/m2. What is the electromagnetic energy contained in 5.0 m3 of space
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