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A wooden block with mass 1.15kg is placed against a compressed spring at the bottom of a slope inclined at an angle of 28.0? (point A). When the spring is released, it projects the block up the incline. At point B, a distance of 4.75m up the incline from A, the block is moving up the incline at a speed of 5.10m/s and is no longer in contact with the spring. The coefficient of kinetic friction between the block and incline is ?k = 0.40. The mass of the spring is negligible.
Part A Calculate the amount of potential energy that was initially stored in the spring.
David is driving a steady 24 when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.70 at the instant while David passes. How far does Tina drive before passing David.
examine the strengths and weaknesses of the various measures of investment attractiveness as used by Euro land Foods. Will all of the measures rank the projects identically? Explain why of explain why not?
A 5.2 x10^2-newton girl takes 10. Seconds to run up two flights of stairs to a landing, a total of 5.0 meters vertically above her starting point. What power does the girl develop during her run.
A tuning fork vibrating at 516 Hz falls from rest and accelerates at 9.80 m/s2. How far below the point of release is the tuning fork while waves with a frequency of 489 Hz reach the release point? Take the speed of sound in air to be 340 m/s.
A wheel consists of 20 thin spokes, each with mass 0.070kg , attached to a rim of mass 4.4kg and radius 0.85m. Find its rotational inertia
What is the friction force that acts on the firefighter. find Max wavelength and Min wavelength.
Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Assume that the masses of the chains, pulleys, and ropes are negligible and the crate is rising with an acceleration of 3.3 m/s..
What is the angular speed of the bar at the moment the bug jumps?
A man strides across a bed of embers. Assume the glowing charcoal is covered with a thin layer of ash 0.50 mm thick and is at a temperature of 650C. The thermal conductiviity of ash and charcoal is 1.5 W/ (mxK). (a) Estimate the heat transferred t..
The magnitude of earth's magnetic field is 50.0 µT and makes an angle of 30° with the plane of the coil. Assume a patient takes 1.50 s to inhale, find the magnitude of average induced emf in the coil during that time.
Consider three resistors with unequal resistances connected in series to a battery. Which of the following statements are true? 1. The current flowing through each of the resistors is the same and is equal to the current supplied by the battery.
2.00 mole of an ideal gas at 330k, 3.50 atm and 3.0L are isothermically compressed causing a change of entropy in the system equal to -25.0 J*K^-1. determine the final volume of the system
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