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The greatest height reported for a jump into an airbag is 99.4 m by stuntman Dan Koto. In 1948 he jumped from rest from the top of the Vegas World Hotel and Casino. He struck the airbag at a speed of 39 m/s (88 mi/h). To assess the effects of air resistance, determine how fast he would have been traveling on impact had air resistance been absent.
The work function for Tin is 4.42 eV. Ultraviolet light with \lambda =50 nm is shone upon a Tin electrode
The main of a transformer has 100 turns and its secondary has200 turns. If the power input to the primary is 100W, we can expect the power output of the secondary to be (neglecting frictional losses).....
A hypodermic syringe contains a medicine with the density of water. The barrel of the syringe has a cross-sectional area A = 2.60 10-5 m2, and the needle has a cross-sectional area a = 1.00 10-8 m2. In the absence of a force on the plunger, the pr..
a thin rod, of length L = 0.80 m and negligible mass that can pivot about one end to rotate in a vertical circle. what is the change in the gravitational potential energy of the ball-Earth system
2.0 kg of water at 14 C is mixed with 2.0 kg of water at 53 C in a well-insulated container. Estimate the net change in entropy of the system
two ships a and b leave port at the same time. ship a travels northwest at 20 knots and ship b travels at 28 knots in a
An ideal spring of negligible mass is 11.00cm long when nothing is attached to it, If you wanted to store 10.0 J of potential energy in this spring, what would be its total length? Assume that it continues to obey Hooke's law
an air-filled lead balloon of radius r is totally submerged in a tank of water. a show that the thickness of the skin
The Question is how do you find the time when given distance and acceleration.(A car starts from rest accelerates uniformly at a rate 5.78m/s^2 for a distance of 115m.what is the final velocity?) so from that question how do you start and end the..
an observer stands 25 m behind a marksman practicing at a rifle range. the marksman fires the rifle horizontally the
A 245 ball is tied to a string. It is pulled to an angle of 5.20 and released to swing as a pendulum. A student with a stopwatch finds that 10 oscillations take 10.5.
A cart of mass 360 g is placed on a frictionless horizontal air track. A spring having a spring constant of 9.0 N/m is attached between the cart and the left end of the track.
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