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The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 3.85 m/s. If non-conservative forces,such as kinetic friction and air resistance, are negligible, whatwould be the height h of the highest point reached by the skateboarder on the right side of the ramp?
A 1.2-kilogram mass is projected from groundlevel with a velocity of 30 m/s at some unknown angle above thehorizontal. A short time later, after being projected, the massbarely clears a 16-meter tall fence. Disregard air resistance andassume the g..
If the uncertainty in the energy of an excited state is a billionth of an electron volt (1 neV), what is the half-life of the state
A 1200 kg ore cart is rolling at 10.8 m/s across a flat surface. A crane dumps 691 kg of ore (vertically) into the cart. How fast does the cart move after being loaded with ore
a meter stick is shot horizontally, from a meter stick projector at a speed of .9c. How large will it be relative to its frame of reference
A car of mass 1200 kg turns a corner inclined at 55 deg at a speed of 20 m/s. What is the maximum radius for the curve at which the car will not slide down the incline
question a block of unknown mass is attached to a spring of spring constant 5.6 nm and undergoes simple harmonic motion
A sledge loaded with bricks has a total mass of 18.9 kg and is pulled at constant speed by a rope inclined at 20.1° above the horizontal. The sledge moves a distance of 19.4 m on a horizontal surface. The coefficient of kinetic friction between th..
A 1.10 kg mass is at the center of a uniform spherical shell of mass 1.07 1020 kg and radius 1.05 106 m. Find the resultant gravitational force on the mass
A 66 trampoline artist jumps vertcally upward from the top of a platform with a speed of 5.4 . A) What is his speed as he lands on the trampoline, 3 m below his jump off point? B) If the trampoline behaves like a spring with spring stiffness constant..
A block with mass m = 2.00 kg is placed against a spring on a frictionless incline with angle ? = 34°. (The block is not attached to the spring). What is the change in the gravitational potential energy of the block-Earth system
questiona the proton-proton chain efficiently converts hydrogen into helium according to 4h rarr4 he. a helium 4
the distance between the eyepiece and the objective lens in a certain compound microscope is 29.0 cm. the focal
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