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A bunch of cylindrical logs are lying next to the Hudson River. If each log has a diameter of 23cm, a length of 6m, and has a density of 700 kg/m^3 A) how much does 1 log weigh in Newton’s? B) If 6 of them are connected together to form a raft, how many people can stand on it before it sinks? Suppose that an average person weighs 70kg and the density of the Hudson River is 1000kg/m^3
Water is supplied to an office building 41.5 m high through a pipe at ground level. Find the minimum pressure in the supplypipe so that water can reach the top floor of the building.
find the moment of inertia about the z axis of the hemispherical shell of z= (2^2-x^2-y^2)^(1/2), derive the unit normal vector for surfaces given by y=g(x,z_ x=h(y,z)
The Cosmoclock 21 Ferris Wheel in Yokohama City Japan hasdiameter of 100m, Find the speed of the passengers when the Ferris wheel isrotating at this rate
A person wears a hearing aid that uniformly increases the sound level of all audible frequencies of sound by 27.8 dB. What is the intensity delivered to the eardrum
You are designing a pendulum clock whose period can be adjusted by ±10% by changing the length of the pendulum. Determine the range of change of length which provide this flexibility in the period
A diver makes 2.5 revolutions on the way from a 11-m-high platform to the water. find the diver's average angular velocity during a dive
A 63.0kg skier is moving at 6.55m/s on a frictionless, horizontal snow-covered plateau when she encounters a rough patch 3.55m long. How fast is the skier moving when she gets to the bottom of the hill
your sister wants to participate in the yearly science fair at her high school and asks you to suggest some exciting
The rear end of an air conditioner dumps 1.2 * 10^7 J/hr of waste heat into the air outside a building. A fan assists in the removal of this heat. With what temperature does the air emerge
A water pistol aimed horizontally projects a stream of water with an initial speed of 6.50 m/s. How far does the water drop in moving 1.90 m horizontally
A 5.57-kg object passes through the origin at time t = 0 such that its x component of velocity is 4.95 m/s and its y component of velocity is -2.94m/s. What is the kinetic energy of the object at this time
A wire 2.45 m long carries a current of 19.2 A and makes an angle of 48.8° with a uniform magnetic field of magnitude B = 1.18 T. Calculate the magnetic force on the wire
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