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A 150g block is launched up a 50.0 degree ramp using a spring compressed a distance of 5.0cm from its equilibrium position. The spring requires a force of 16.5N to compress it 15cm. If the coefficient of kinetic friction between the block and the ramp is 0.40, how far up the ramp will the block go as measured from its starting position?
The runner turns around and runs in the -x direction at the same speed. Now what is the kinetic energy of the runner
A 400kg soccer ball approaches a player horizontally with aspeed of 15.0 m/s. What impulse was delivered to the ball by the player
The roof of the student dining hall at your college would be supported by high cross-braced wooden beams attached in the shape of an upside-down L. Each vertical beam is 10.0 ft high and 2.0 ft wide.
You fly your 15 m spaceship, parallel to the ship's length with a speed of c/3 to your friend. How long is your spaceship as observed by your friend
A roller-coaster vehicle has a mass of 506 kg when fully loaded with passengers, If the vehicle has a speed of 19.0 m/s at point A, what is the force of the track on the vehicle at this point
One mole of an ideal gas at 27 °C is expanded isothermally from an initial pressure of 3 atm to a final pressure of 1 atm in two ways. (a) reversible, and (b) against a constant external pressure of 1 atm. find q, w, ΔU, ΔH, ΔSsys, ΔSsurr, ΔStotal..
For the infinite square well problem an electron spends 40% of its time in the n=3 state and 60% of its time in the n=5 state. Write down an expression for its wave function in terms of the eigenfunctions [(2/L)^1/2]*sin(n*pie*x/L) . What is the aver..
In fair weather, over flat ground, there may be a downward electric field of 155 N/C. Calculate the charge density of the air
A chemistry student with a mass of 75 kg is riding a steadily moving Ferris wheel. What would the normal force be on the student at the top of the wheel if the wheel's velocity were doubled
machine part rotates at an angular speed of 0.46 rad/s; its speed is then increased to 2.0 rad/s at an angular acceleration of 0.59 rad/s2
A rope with mass mr is attached to a block with massmb. The block rests on a frictionless horizontal surface. The rope does not stretch. The free end of the rope ispulled to the right with a horizontal force F.
The density of ice is 0.92 g/cm^3, and the density of seawater is 1.03 g/cm^3. A large iceberg floats in Artic waters. What fraction of the iceberg is exposed
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