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A block is hung from a vertical spring. The sprint stretches (h = 0.0650 m) as shown for a particular instant in time in Figure. Consider the Earth, spring, and block to be in the system. If m = 0.865 kg and k = 125 N/m, find the change in the system's potential energy between the two times depicted in the figure.
A rifle is meant horizontally at a target 47 m away. The bullet hits the target 2.5 cm below the aim point. What was the bullet's flight time? What was the bullet's speed as it left the barrel?
When 2.1 mol of oxygen (O2)gas is heated at constant pressure starting at 0°C, how muchenergy must be added to the gas as heat to quadruple its volume? (The molecules rotate but donot oscillate.)
Water at 20°C exits a circular tap moving straight down with a flow rate of 10.1 cm3/s. If turbulent flows are characterized by Reynolds numbers above 2300 or so, how far does the water have to fall before it becomes turbulent
A bicycle is turned upside down while its owner repairs a flat tire on the rear wheel. determine the magnitude of the average angular acceleration of the wheel
A Carnot engine has an efficiency of 0.325, and the temperature of its cold reservoir is 414 K. what amount of heat is put into the engine
An electrically neutral thin, square metal slab, measuring 6.00cm on a side is placed in a uniform external field that is perpendicular to its square area. What is the total charge on the negative side of the slab
A cart of mass 500g is running with a speed 0.8m/s to the right; What is the magnitude of the total momentum of the carts
A centrifuge whose maximum rotation rate is 11,000 rev/min can be brought to rest in 3.00 s. What is the average angular acceleration of the centrifuge
A parachutist with a camera descends in free fall at a speed of 11 m/s. The parachutist releases the camera at an altitude of 100 m. How long does it take the camera to reach the ground
an electron is released from rest at a perpendicular distance of 8.2 cm from a line of charge on a very long
A 2.00 meter long horizontal plank whose mass is 3.00 kg is placed so that the very end (the right end) rests on a retaining wall. Find the force acting on the board by the tailgate
An airplane travels 3100km at a speed of 790km/h, and then encounters a tailwind that boosts its speed to 990km/h for the next 2800 km. what was the average speed of the plane for this trip
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