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Finding acceleration and height given two times. one rock is dropped from a height 'h' and it takes 4.15s to reach the ground from a cliff and the second rock is thrown up 2m and then takes 6.3s to reach the ground, what is the hight of the cliff?
A 173-kg sculpture hangs from a horizontal rod that serves as a pivot about which the sculpture can oscillate. How far is the pivot from the sculpture's center of mass
A square loop of wire with sides of length 42 cm is in a uniform magnetic field perpendicular to its area. If the field's strength is initially 100 mT and it decays to zero in 0.015 s, what is the magnitude of the average emf induced in the loop? Wh..
A 1500 kg car traveling at a speed of 20 m/s skids to a halt on wet concrete where kinetic friction= 0.20. How far are the skid marks.
A CD rotating at 1200 rpm starts slowing down at a constant rate such that, after the first two seconds, it has made 10 rotations. Find the time needed for the CD to come to rest
A spherical mirror is polished on both sides. When used as a convex mirror, the magnification is +1/7. Find the magnification when used as a concave mirror
a geologist finds that a moon rock whose mass is 9.79 kg has an apparent mass of 6.50 kg when submerged in water. what
A silver wire has resistivety p = 1.62x10^-8 ?m ana cross sectional area of 5.00 mm^2. what is the displacement current in the wire
Two blocks of mass m = 11.8 kg each are fastened to the ceiling of an elevator, the elevator accelerates upward at a = 2.12 m/s2. Find the tension in the bottom rope
In a two-slit interference pattern, the intensity at the peak of the central maximum is I_zero. I/I_zero = 0.772 if this helps Part B What is the path difference for light with a wavelength of 477 nanometers from the two slits at a point where the ph..
A 2 kg book resting on a flat table requires an applied force of 4 N to make it move. Draw a free body diagram illustrating this situation and find the coefficient of static friction between the book and the table.
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. An 920-kg helicopter rises from rest to a speed of 8.0 m/s in a time of 4.5 s. During this time it climbs..
A 0.75 mm diameter copper wire carries a small current of 3.5 µA. What is the drift speed of the electrons in the wire
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