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You are designing a delivery ramp for crates containing exercise equipment. The crates of weight 1411 will move with speed 1.83 at the top of a ramp that slopes downward at an angle 26.5. The ramp will exert a 629 force of kinetic friction on each crate, and the maximum force of static friction also has this value. At the bottom of the ramp, each crate will come to rest after compressing a spring a distance . Each crate will move a total distance of 7.98 along the ramp; this distance includes . Once stopped, a crate must not rebound back up the ramp
Calculate the maximum force constant of the spring that can be used in order to meet the design criteria.
q1. an electron with a speed of 3.28 times 108 cms in the positive direction of an x axis enters an electric field of
You have a lens whose focal length is 12.7 cm. You place an object on the axis of the lens at a distance of 6.25 cm from it. How far is the object\'s image from the lens
A 75 g piece of ice at an initially unknown temperature is placed into a glass of 350 g of water sitting at room temperature when it is 75ºF in the room. The glass and ice come to thermal equilibrium at 4ºC.
Using a block of transparent, unknown material, What is the index of refraction of this material
A 30 charge is moved from a point where = 150 to a point where = -70. How much work is done by the force that moves the charge
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At a certain location, the horizontal component of the earth's magnetic field is 2.2 10-5 T, due north. Find the speed of the proton
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A rocket moves upward, starting from rest with an acceleration of 33.4 m/s2 for 3.47 s. It runs out of fuel at the end of the 3.47 s but does not stop. How high does it rise above the ground.
A toroid of mean radius 24 cm and circular cross section of radius 1.5 cm is wound with a superconducting wire of length 1000 m that carries a current of 350 A. calculate the magnetic energy density
A reflecting telescope is built with a 10-cm-diameter mirror having a 1.00 m focal length. What is the magnification of the telescope
A pair of eyeglasses has an index of refraction nglass = 1.52. It is covered with an antireflection layer that has a thickness of 120 nm, what is its index of refraction
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