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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.)
find the highest distance throughout which his center of gravity can fall without his breaking a bone.
A proton moving with a velocity of 4.0 *10^4 m/s enters a magnetic field of 0.20 T. what is the magnitude of the force on the proton
An engine with an output of 300 W has an efficiency of 35.0 %. It works at 13.00 cycles/s. How much work is done in each cycle
A curve is banked at an angle of 30 degrees with respect to the horizontal. what is the ideal speed for a motorist to take the curve when it is covered by glare ice
A thin soap film (n = 1.33) has the uniform thickness. When white light strikes the film at normal incidence, blue light (b = 440 nm) is constructively reflected.
Four point charges have the same magnitude of 2.6 x10-12 C and are fixed to the corners of a squarethat is 6.0 cm on a side. Three of the charges are positive and oneis negative. Determine the magnitude of the net electric field that exists at the..
Rocket-powered sleds are used to test the human response to acceleration. what is the distance that the sled travels
What is the probability density equation as a function of angle for a simple pendulum using the small angle approximation
A 41 kg crate, starting from rest, is pulled across a floor with the constant horizontal force of 250 N. For the first 10m the floor is frictionless, and for the next 11.00 m the coefficient of friction is 0.17. What is the final speed of the crat..
Compute the final equilibrium temperature.
A projectile is launched with an initial speed of40.0 m/s at an angle of 35.0° above the horizontal. What is the projectile's velocity at the highest point of its trajectory
A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. how many antinodes are in the standing wave
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