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In our physics lab we fired our spring loaded launcher using the yellow ball which had mass of 9.8 grams. If the spring is compressed 20.1 cm and the ball travels horizontally 2.51 m from a height of 1.25 m, determine the spring constant of the spring.
On an exo-planet, a 70-kg astronaut steps on a scale and finds that the scale reads 246 N. A survival pack is dropped a distance 85 m to the ground. How fast will the survival pack be moving just before it hits the ground
A diffraction grating has a line density of 580 . This grating produces a 1st order maximum at a distance of 2.52 from the central maximum on a screen which is 5.40 away
The Olympic Flame at the 1992 Barcelona Olympics was lit by a flaming arrow shot from a point 60 meter horizontally and 24 meter vertically from the flame. Compute the initial speed necessary for the arrow
a 43 mg sample of pure gold 197au is irradiated in a reactor with a steady neutron flux of 51010 neutronss-cm2 long
Calculate the radial acceleration of the ball during its circular motion.
A speedboat moving at 33.0 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat by a constant acceleration of -3.9 m/s2 by reducing the throttle. How long does it take the boat to reach the buoy?
The wind resistance on the package can be neglected. When releasing the package, at what angle?(in degrees)down from the horizontal must the pilot see the target for the package to land on the target?
A loudspeaker of mass 24.0 {rm kg} is suspended a distance of h = 1.40 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.70 {rm m}.
An ultralight plane and pilot have a total mass of 150 kg. what is the net force acting on the plane and pilot
a 3.00-m long rod is hinged at one end. THe rod is initially held in the hozizontal position, what is the angular acceleration as it is released
A ball is thrown straight upward with an initial speed of 25 m/s. how high does the ball go before falling back down
A car is rounding a curve with a radius of 12.0 m at 8.2m/s when it hits a slippery patch. What is the minimum coefficientof static friction between the car and the slick patch of road that will allow the car to round the corner safely?
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