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When the parachute opens in a sky jump, the forces acting on a sky diver of mass m kg, are his weight of magnitude mg and a resistive force of magnitude kv2, where v ms-1 is his speed and k is a positive constant.
Calculate his terminal speed vT, in ms-1, when m = 70.6 kg and k = 38.29, giving your answer to 3 decimal places. Assume g = 9.81 ms-2.Please provide working and answer for better understanding.
A water balloon is launched at a building 24 m away with an initial velocity of 18 m/s at an angle of 50 degrees above horizontal. At what height will balloon strike building
q1. a person eats a dessert that contains 26o calories. this skin temperature of this individual is 38 degrees celsius
Light with a frequency of 2.95 x 1015 Hz ejects electrons from the surface of calcium, which has a work function of 2.87 eV. What is the minimum de Broglie wavelength of the ejected electrons?
estimate the electrical energy stored in the atmosphere if the earths electric field extends upward for 1700 m. and
A man strikes a long aluminum rod at one end. Another man, at the other end with his ear close to the rod, How long is the rod
A solid wood doors 1 meter wide and 2 meter high is hinged along one side and has a total mass of 50 kilogram. Evaluate what the final kinetic energy of the system
Two 2.0-g pith balls hang in air on essentially weightless cotton threads 50-cm long from a common point of support. Find the magnitude of the charge on each ball
Two identical clocks are synchronized. One is then put inorbit directed eastward around the Earth while the other remains onthe Earth. Which clock runs slower? When the moving clock returnsto the Earth, are the two still synchronized? Photons of l..
A neutron in a reactor makes an elastic collision head on with a nitrogen atom that is initially at rest. Obtain what percent of the neutron kinetic energy is transferred to the nitrogen nucleus
A thin rod of mass M and length L is hinged at the floor as shown. It initially stands vertically and is released from rest. With what angular speed will it strike the floor?
In a film of Jesse Owen's famous long jump in the 1936 Olympics, What minimum speed did he need at launch if he was also noted to be traveling at 6.5 m/s at the top of the arc
Two hockey pucks, A and B, on a frictionless surface are coverd with velcro. Both pucks have a mass of .50kg. puck A is moving south @ a speed of 1.2m/s and B is moving east at a speed of 1.6m/s. the two collide and stick toge
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