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A 500kg pig is standing at the top of a muddy hill on a rainy day. The hill is 100.0m long with a vertical drop of 30.0 m. The pigslips and begins to slide down the hill. What is the pig's speed at the bttom of the hill? Use the law of conservation enrgy.
Two wires are tied to the 500 sphere. The sphere revolves in a horiIzontal circle at a constant speed of 6.8.
After 2.02 days, the activity of a sample of an unknown type radioactive material has decreased to 88.2% of the initial activity. What is the half-life of this material
What was the initial negative charge on one of the spheres, and what was the initial positive charge on the other? (Hint: Use charge conservation and solve for one of the initial charges. You would end up with a quadratic equation. The solutions g..
Two identical blocks of mass m are connected by a cord of length l that runs over a massless frictionless pulley, as shown below. One mass sits on a frictionless horizontal table. Now suppose that the string has a total mass M, which is distributed u..
How long does it take the projectile to reach the top of its trajectory? Explain how high does the projectile go before it begins to fall?
What is the angular momentum of a figure skater spinning at 2.0rev/s with arms in close to her body, assuming her to be a uniform cylinder with a height of 1.5 m, a radius of 15cm , and a mass of 48kg ? How much torque(in magnitude) is required to sl..
An object 1.40 cm high is held 3.00 cm from a person\'s cornea, and its reflected image is measured to be 0.167 cm high. Find the magnitude of the radius of curvature of the convex mirror
An ice skater has by herself a moment of inertia of 5.5 kg m^2 with her arms out, with her arms in it is 5.0 kg m^2. how fast will she be spinning if she brings her arms in a distance of .7 m
A thick copper wire of length 10 m is observed to stretch 0.10 cm. What is the strain? If the applied force is 50,000 N, what is the diameter of the wire
A toaster uses a Nichrome heating wire. When the toaster is turned on at 20° C, the initial current is1.50 A. A few seconds later, the toaster warms up and the currentnow has a value of 1.24 A. The averagetemperature coefficient of resistivity for..
q1. two speakers one directly behind the other are each generating a 374-hz sound wave. what is the smallest parting
Three capacitors are connected in series. The equivalent capacitance of this combination is 2.70 ?F. Two of the individual capacitances are 6.70 ?F and 8.30 ?F. What is the third capacitance (in ?F)?
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