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How much does accounting for rotational energy matter? Consider allowing a hollow cylinder to roll down a ramp that flattens out at the end, leading to a ledge that is some height above the ground. Suppose you start the cylinder off from rest at at the top of the ramp. The rotational inertia of a cylinder rotating around its central axis is MR2. Compare how far you would predict the cylinder lands horizontally from the ledge when you take into account that it rolls without slipping versus if you just treat it as though it slides down the ramp without rolling. Give your answer as a ratio of the case where rolling is considered over the case where it is neglected.
An insulated Thermos contains 150cm3 of hot coffee at 83°C. You put a 12g ice cube at its melting point to cool the coffee. By how many degrees has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as although..
What is the speed of the projectile immediately before it hits the ground if air friction does one and a half times as much work on projectile when it is going down as it did when it was going up.
A heart defibrillator is charged to 350V. It is connected to a patients chest and allowed to discharge through the heart. how much charge resides on the capacitor?
The spring balance is reasonably accurate for determining the load mass, Explain how to use the Workin = Workout principle to verify the mass of the spring balance
In travelling to the Moon, astronauts aboard the Apollo spacecraft put themselves into a slow rotation to distribute the sun's energy evenly. At the start of their trip, they accelerated from no rotation to 1.0 revolution every minute through a 12-mi..
Please explain in detail and step by step a 1.0kg block is held at rest against a spring with a force constant k = 740N/m. Find d such that the block's speed after crossing the rough patch is 2.4m/s
Starting from rest, a 98 kg firefighter slides down a fire pole. The average frictional force exerted on him by the pole has a magnitude of 800N, and his speed at the bottom of the pole is 3.2 m/s. How far did he slide down the pole.
find the angle between the position vectors to the points 3 -4 0 and -2 1 0 and find the direction cosines of a vector
a a wire 1 m long is perpendicular to a magnetic field of 0.01 t. what is the force on the wire when it carries a
A diverging lens (f = -12 cm) is located 20.0 cm to the left of a converging lens (f = 35.0 cm). find the distance of the final image relative to the converging lens
A spring is hanging vertically in an unstretchedcondition. The spring stretches 20 cm when a 500 g mass ishung from it. What is the angular frequency of the oscillation
A 1000 kg car approaches an intersection traveling north at 20 m/s. A 1200 kg car approaches the same intersection traveling east at 22 m/s. The two cars collide at the intersection and lock together. Ignoring any external forces that act on the c..
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