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An ore sample weighs 17.50 N in air. When the sample issuspended by a light cord and totally immersed in water, thetension in the cord is 11.20 N. Find the total volume and the density of the sample.
A) Find v so that the rod swings up and is horizontal at the max height of the bob. B) Find the minimum v so that the rod will make a complete circle C) Find v so that the tension in the rod is zero at the top of its swing.
suppose a solid disk of radius r3.64 cm is given an angular velocity omega54.83 rads about an axis through its center
A student sits at rest on a piano stool that can rotate without friction. The moment of inertia of the student-stool system is 4.4. find the resulting angular speed of the student and the stool
A 52.6-kg skateboarder starts out with a speed of 2.16 m/s. He does 89.2 J of work on himself by pushing with his feet against the ground. Calculate the change (PEf - PE0) in the gravitational potential energy
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
It rolls at a steady speed for 1.9 s, then one wheel begins to stick. The train comes to a stop 6.0 m from its starting point. Illustrate what is the train's acceleration after its wheel begins to stick?
A 60 kg woman stands on a very light, rigid board that rests on the bathroom scale at each end. She is 1.5m away from one side and 0.5 m from the other.
You are driving to grocery store at 21. You are 100 from an intersection when the traffic light turns red. Presume that your reaction time is 0.75 and that your car brakes with constant acceleration. How far from the intersection are you when you ..
A muon and an antimuon are moving in opposite directions with velocities of -0.4 c and 0.4 c, respectively. What is the wavelength of each photon
Two masses of 4.00 kg each, connected by a string, slide down a ramp making an angle of 45° with the horizontal. Find the magnitude of the acceleration of the masses
A 2000 kg statue falls into a circular jacuzzi with a diameter of 5 m, What is the average density of the statue
You have a 1.0 m long copper wire. You want to make an N -turn current loop that generates a 1.0 mT magnetic field at the center when the current is 1.0 A, What will be the diameter of your coil
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