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A 98 kg waterskier is being pulled at a constant velocity. The horizontalpulling force is 270N.
(a) Find the magnitude of the total resistive force exerted on the skier by the waterand air.
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b) Find the magnitude of theupward force exerted on the skier by thewater.
A cart for hauling ore out of a gold mine has a mass of 447 kg, including its load. Calculate the work done on the cart during the process by friction
A covex lens of focal length 10 cm placed 40 cm in front of aconcave lens of focal length 25 cm.A small object is placed 20 cmin front of the convex lens calculate the location of the finalimage relative to the second lens. Include a ray diagram
A cylindrical solenoid of 0.4m length has a diameter of 10mm and 250 tightly wound turns of wire uniformly distributed along its length. Around the middle of the solenoid is a 2-turn rectangular loop 3 x 2 cm2 in size, entirely made of resistive w..
At a height of fifteen meters above the surface of a freshwater lake, a sound pulse is generated. How deep is the lake
A superconductor in a magnetic field obeys the relationship B(T) = B(0) [1 – (T/Tc)2]. If the superconductor has a Tc of 20K and it is operated at T = 4.2K the critical field is 30T. Determine the maximum operating temperature if the material is used..
In the figure below, block 1 of mass m1 slides along an x axis on a frictionless floor with a speed of v1i = 2.40 m/s. Then it undergoes a one-dimensional elastic collision with stationary block 2 of mass m2 = 0.200m1.
A positive charge of Q = 5.40 uC is fixed in place. From a distance of ri = 4.20 cm a particle of mass m = 5.50 g, What is the minumum distance rf between the two charges
A fire helicopter carries a 520-kg bucket of water at the end of a 20.0-m long cable. Flying back from a fire at a constant speed of 40.0 m/s, Determine the force exerted by air resistance on the bucket
A 55g ball of clay traveling at speed v 0 hits and sticks to a 1.3kg kg block sitting at rest on a frictionless surface, What percentage of the ball's initial energy is "lost"
Find an expression for acceleration a of a stationary observer in Schwarzschildspacetime and show that generally it does not vanish (as it would for a stationaryobserver in Newtonian gravitation).
A compressed-air cylinder stands 96.0 cm tall and has internal diameter 21.0cm cm . At room temperature, its pressure is 161 atm. How many moles of air are in the cylinder
The average density of a fish can be found by first weighing it in air and then finding the scale reading for the fish completely immersed in water, what is the average density of the fish
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