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A modern sculpture has a large horizontal spring, with a spring constant of 279 N/m, that is attached to a 58.0 kilogram piece of uniform metal at its end and holds the metal at an angle of 51.0 degree above the horizontal direction. The other end of the metal is wedged into a corner. Evaluate by how much has the spring stretched?
Calculate the change in internal energy for each of the following systems: 100 joules of energy is added to a system that does 40 joules of external work
q1. a thunderstorm drops 6.0cm of rain on a city that covers an area of 33 km by 45 km. approximation the number of
A trap door, of length and width 1.65 m, is held open at an angleof 65.0 degrees with respect to the floor. what is the torque exerted on the trap door by the rope
when two identical ions are separated by a distance of 2.1times10-10 m the electrostatic force each exerts on the
A piano tuner sounds two strings simultaneously. One has been previously tuned to vibrate at 283.0 Hz. The tuner hears 5.0 beats per second. What was the original frequency of the untuned string
A 65.0 kg person jumps from rest off a 3.19 m-high tower straight down into the water. Determine the magnitude of the average force that the water exerts on the diver
A Pilot ejects from a jet raveling horizontally at 361 m/s. The combined mass of the pilot and their ejection seat is 200 kg. Whats the drag force exerted on the pilot
A 66 kilogram skier coasts up as now-covered hill that makes an angle of 25 degree with the horizontal. The initial speed of the skier is 6.6 m/s. Determine the work done by the kinetic frictional force that acts on the skis
The frequency of a steam train whistle as it approaches you is 538Hz. After it passes you, its frequency is 486Hz. How fast was the train moving
A pair of cylindrical shoes each having a radius of 1 m and height of 5 cm are designed to allow a person to stand on water without getting their feet wet. What is the largest mass the person can have
A 2.0 kg ball swings in a vertical circle on the end of an 80cm long string. Calculate the speed, magnitude and direction of acceleration
The vertical displacement y(x,t) of a string stretched along the horizontal x-axis is given by y(x,t) = (6.00 mm) cos[(3.25 m-1)x - (7.22 rad/s)t]. What is the distance between adjacent crests of the wave
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