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with a constant tension of 100 N.A 5.0 kg block is attached to one end of a spring with a spring constant of 80 N/m. the other end pf the spring is anchored to the wall. a rope
question1friend of yours travels by you in his fast sports car at a speed of 0.550 c. it is measured in your frame to
You are designing an air delivery system to supply three hand-held rock drills requiring 110 cu ft/min (3.1 m3/min) each. The receiver of the air compressor.
Treating the siren as a point source of sound, and ignoring reflections and absorption, How far away can the siren be heard
An electron with amass of 9.11*10 -31 kg has a velocity of 4.3*10 6m/s in the innermost orbit of a hydrongen atom. What is the de Broglie wavelength of the electron?
An 8 nC point charge is at the center of a 1.6 m x 1.6 m x 1.6 m cube. What is the electric flux through the top surface of the cube
The wavelength of red helium–neon laser light in air is 632.8 nm. What is its frequency? What is its speed in the glass?
Why do we write F=Gm1m2/d2 for the gravitational force on an object when it is far from the Earth but F=mg for the gravitational force on it when it is near the Earth's surface?
How much does the load need to be increased/decreased to avoid first ply failure, assuming all components are increased/decreased proportionally?
A woman who can row a boat at 7.3 km/h in still water faces along, straight river with a width of 6.8 km and a current of 3.3km/h. Let point directly across the river and point directly downstream. If she rows in a straight lineto a point directly..
a log is floating on swiftly moving water. a stone is dropped from rest from a 78-m-high bridge and lands on the log as
A 80 g, 33-{rm cm}-long rod hangs vertically on a frictionless, horizontal axle passing by its center. A 11 g ball of clay traveling horizontally at 2.5 m/s hits and sticks to the very bottom tip of the rod.
An astronaut of mass 73 kg pushes off a satellite of mass 420 kg, exerting a force of 120 N for the 0.82 s they are in contact. What is the speed of the astronaut after they have separated
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