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A uniform stick d = 1 m long with a total mass of 251 g is suspended vertically from a frictionless pivot at its top end. A wad of putty of mass 20 g is moving horizontally with speed v. It strikes and sticks to the stick at a distance 0.75 m from the pivot.What is the minimum speed of the putty such that the stick, with the putty stuck to it, will rise to the horizontal position?vmin= m/s
A student sits on a rotating stool holding two 3.2-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with a
In a time t, N hailstones strike a glass window of area A at angle theta to the window surface. Each hailstone has a mass m and a speed v. If the collisions are elastic, wha
A coil is located in a magnetic field and has a flux through it. The coil is stressed so that the area increases to 75 percent of its original value. determine how must the
A hot-air balloon achieves its buoyant lift with heating the air inside the balloon, which makes it less dense than the air outside. Suppose the volume of a balloon is 1600 m3
Consider a generator with a 300 turn coil on its armature and a uniform magnetic field of 5.4 T. The diameter of the coil is 5.0 cm. how fast do we need to rotate the coil
A typical set of stairs is angled at 38 degrees. You climb aset of stairs at a speed of 3.6 m/s. How much height will you gain in 5.0 s? How much horizontal distance will you
How an aeroplane can move upward? How plane can remain equilibrium in space? How plane can change its altitude? Why sometimes bumping occurs? Why sometimes plane becomes incli
A factory worker moves a 28.0kg crate a distance of 4.80m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction between
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