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A 71 kg person escapes from a burning build- ing by jumping from a window 28 m above a catching net. The acceleration of gravity is 9.81 m/s2 . Assuming that air resistance is simply a constant 91 N force on the person during the fall, determine the person’s velocity just be- fore hitting the net.
How high up a frictionless incline could mass climb? How far could the mass skid on a level table with a static mu of 0.70 and a kinetic mu of 0.50.
Two sinusoidal waves, identical except for phase, travel in the same direction along a string, producing the net wave y(x,t)=(6.5 mm)sin(28.0x -4.0 s-1 * t+0.350 rad),with x in meters and t in seconds. what is the resultant amplitude of the two wa..
What is the lift (in newtons) by reason of Bernoulli's principle on a wing of area 77 m^2 if the air passes over the top and bottom surfaces at speeds of 270 m/s and 140 m/s, correspondingly.
Explain how Gestalt psychologists understand perceptual organization, including the discussion of form perception, depth perception, and perceptual constancy.
Conservation of energy tells us that energy cannot be created or destroyed. Clearly, energy is required for radioactivity to occur. Where is this energy coming from?
A flywheel having constant angular acceleration requires 4.6-{rm s} to rotate through 162 rad. Its angular velocity at the end of this time is 100 rad/s. Find out the angular velocity at the beginning of the 4.6s interval; the angular acceleration..
Three equal positive point charges of magnitude Q = 6.00? C are located at three corners of a square of edge length d = 2.9 cm. A negative charge -18.00? C is placed on the fourth corner.
A small .500 kg object moves on a frictionless horizontal table in a circular path of radius 1 m. The angular speed is 6.28 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of..
The 40 kg man in the roller coaster car is sitting on a bathroom scale. If he is travelling at 35.3 m/s at the point shown and the radius of vertical coaster track is 53 meters, to the nearest newton what does the scale read?
What is the magnitude of the acceleration caused by magnetic force? Ignore the gravitational force acting on the electron.
A block weighing 60.0 N rests on a plane inclined at 25.0° to the horizontal. A force F is applied to the object at 44.0° to the horizontal, pushing it upward on the plane. The coefficients of static and kinetic friction between the block and the pla..
find out where the coyote lands in the canyon.
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