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In February 1955, a paratrooper fell 370 m from an airplane withoutbeing able to open his chute but happened to land in snow,suffering only minor injuries. Assume that his speed at impact was59 m/s (terminal speed), that his mass (including gear) was 65 kg,and that the magnitude of the force on him from the snow was at thesurvivable limit of 1.0 x 105 N. What are
(a) the minimum depth of snow thatwould have stopped him safely and
(b) the magnitude of the impulse on him from the snow?
A truck can move up a road having a grade of 1.0-ft rise every 50-ft with a speed of 15 mi/h. The resisting force is equal to one twenty-fifth the weight of the truck. If its power output is the same, how fast will the same truck move down the hill? ..
A cannon tilted upward at = 31 fires a cannonball with a speed of 94 . At that instant, what is the component of the cannonball's velocity
A 72.3 kg man carrying a 5.23 kg box gets on an elevator. As the elevator accelerates upwards at 0.224 m/s^2, he feels the box is heavier, During this time, what is the weight on the floor from his feet
a river of width 32 m flows in a straight line the x direction with a speed of 0.25 ms. a boat is rowed such that it
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. What is the mass of the wheel
calculate the speed of sound and uncertainty of the speed of sound for a lab report. The equation for the speed of sound is V=4LS
Create a visual display for a tennis ball rolling horizontally along a table and as it goes off the table. Sketch and label all forces acting on the ball in as a minimum three different locations of its motion.
A majorette in a parade is performing some acrobatic twirlings of her baton. Assume that the baton is a uniform rod of mass 0.120kg and length 80.0m With a skillful move, the majorette changes the rotation of her baton so that now it is spinning abou..
Light of wavelength 0.50 ?m illuminates a soap film (n = 1.33). What is the minimum thickness of film that will give an interference when the light is incident normally on it
An electron is released from rest at the negative plate of aparallel plate capacitor and accelerates to the positive plate (seethe drawing). The plates are separated by a distance of 1.4 cm, andthe electric field within the capacitor has a magnitu..
The radius of the GM tube's window is 3.5 cm. The source is 3 cm from the GM tube. Compare the surface area of a sphere 3 cm from the source to the area of the GM tube's window.
A buzzer generates a sound by vibrating with a frequency of 440 Hz in air. If this buzzer is placed under water, What frequency would a fish hear
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