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A 109-kg horizontal platform is a uniform disk of radius 1.69 m and can rotate about the vertical axis through its center. A 61.5-kg person stands on the platform at a distance of 1.15 m from the center and a 27.5-kg dog sits on the platform near the person, 1.33 m from the center. Find the moment of inertia of this system, consisting of the platform and its population, with respect to the axis.
A 10.0 kg crate is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling force is 100. find the work done by the Earth's gravity on the crate
A solid wood door 1.00 m wide and 2.00 m hight is hinged alone one side and has a total mass of 40.0 kg, whats the final angular speed of the door
The greatest ocean depths on the Earth are found in the Marianas Trench near the Philippines. Calculate the pressure due to the ocean at the bottom of this trench
Tarzan, in one tree, sights Jane in another tree. He grabs the end of a vine with length 20 m that makes an angle of 45, Calculate Tarzan's speed just before he reaches Jane
You are entered into a bicycle race on a circular at track with a radius of 39.8 m. You get set at the starting line and wait for the starting signal. What was your angular acceleration
A solution has a hydronium-ion concentration of 1.0 x 10^-3 mol per liter. What is the hydroxide-ion concentration of this solution
Objects of masses m1 = 4.00 kg and m2 = 9.00 kg are connected by a light string that passes over a frictionless pulley, Determine the acceleration of each object
If a man is capable of lifting a 121 lb stone on land, how heavy a stone could he lift under water
A block of mass 0.78 kg is suspended by a string which is wrapped so that it is at a radius of 0.069 m from the center of a pulley. Calculate the amount of energy dissipated up to that point
Volcanoes on the Earth eject rocks at speeds of up to 160 m/s. Consider a 1260 m high volcano that ejects rocks in all directions. What is the maximum height above sea level reached through rocks.
Visitors at a science museum are invited to sit in a chair to right of a full-length diverging lens (f1 = -3.06 m) and observe a friend sitting in a second chair, 1.84m to the left of the lens.
Determine the voltage at the motor terminals - mesh analysis with one loop including the source
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