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Tired of walking down the stairs a 75 kg engineering student designs an ingenious device for reaching his third floor dorm room. A 60 kg block at rest on the ground is attached to a rope that passes over a pulley. The student grabs the other end of the rope and steps out of his window. he falls 5.5 s before reaching the ground.
Consider a series RLC circuit where R = 345 ? and C = 2.25 ?F. However, the inductance L of the inductor is unknown. What is the inductance of the inductor in millihenrys
A nearsighted person cannot see objects clearly beyond 30cm (the far point). what is the power of the lens (in diopters required to correct the patient's vision
A box slides down a 36° ramp with an acceleration of 1.26 m/s2. find the coefficient of kinetic friction between the box and the ramp.
A bullet is fired from at a shooting range. The bullet hits the ground after 0.32 seconds. How far did it travel horizontally and vertically in this time
The balance wheel of a watch oscillates with angular amplitude 0.90? rad and period 0.68 s. Find the maximum angular speed of the wheel
A 7.11-kg box is sliding across the horizontal floor of an elevator. find the kinetic frictional force that acts on the box
two point charges of 20.0 oc and - 8.00 oc are separated by a distance of 20.0 cm. what is the intensity of electric
At what angle is the curve banked? The acceleration due to gravity is 9.8 m/s2.
520-N uniform rectangular sign 4.00 m wide and 3.00 m high is suspended from a horizontal, 6.00-m-long, uniform, 150-N rod as indicated in the figure below. The left end of the rod is supported by a hinge and the right end is supported by a thin c..
A distant observer, observing from far away but in the plane of the Solar System tries to measure the orbital speed of Mercury. How much is light from Mercury redshifted or blueshifted as it orbits the Sun
What was the arrow's initial speed. A small sphere with a mass of 2.00×10^-3g and carrying the charge of 4.80×10^-8C hangs from a thread near a very large, charged insulating sheet. The charge density on the sheet is -2.90×10^-9C/m^2 .
A flat slab of styrofoam, with a density of 32 kg/m^3, floats on a lake. What minimum volume must the slab have so that a 34kg boy can sit on the slab without it sinking
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