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A horizontal board weighing 232.0 Nis supported at points A and B in the figure below. The plankserves as a platform for a painter, who weighs 571.0 N. Find the maximum distance D, such that the plank will not tip, no matter where the painter stands.(Let L = 4.10 m.)
At a certain distance from the center of the Earth, a 4.0- object has a weight of 3.0 . If the object is now moved twice as far from the Earth, by what factor does its weight change?
A 120- crate, starting from rest, is pulled across a floor with a constant horizontal force of 380. What is the final speed of the crate
Suppose a patient having an MRI is immersed in a 3.0 T field along the axis of his body. He then quickly tips his head to the side, toward his right shoulder, tipping his head by 30 degrees in the rather short time of 0.15 s.
An electic dipole has charges of +or- 4.10pC that are separated by 6.25cm. Determine the net force on the dipole
A pot of hot water is boiling on your stove. The pot is in the shape of a round cylinder made of aluminum which is 10 cm in radius. find the temperature of the inner surface of the bottom of the pot
A horizontal turntable is made from a uniform solid disk and is initially rotating with angular velocity of 7.5 rad/s about a fixed vertical axis through its center. What is the mass of the turntable
The vertical deflecting plates of a typical classroom oscilloscope are a pair of parallel square metal plates carrying equal but opposite charges. Typical dimensions are about 3.4cm on a side, with a separation of about 4.6cm . The plates are close e..
Suppose white light falls on two slits separated by a shortdistance. One slit is covered by a red filter (700 nm) andthe other by a blue (450 nm) filter. Describe the pattern on the screen
A rectangular block of copper has sides of length 10 cm, 20 cm and 40 cm. what is the maximum current the block can carry
A curve in a highway has radius of curvature 110 m and is banked at 3.3°. On a day when the road is icy, what is the safest speed to go around the curve
Arthur and Betty start walking toward each other when they are 100 m apart. Arthur has a speed of 3.0 m/s and Betty has a speed of 2.0 m/s. Their dog, Spot, starts from Arthur's side at the same time and runs back and forth between them. By the time ..
An Olympic skier whose mass is 50 kg is moving at 25 m/s down a 20degree slope encounters a region of wet snow of coefficient of frictio Uk=0.55 which reduces her speed. Find the acceleration of the skier
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