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Two students are on a balcony 20.7 m abovethe street. One student throws a ball ver-tically downward at 13.2 m/s. At the sameinstant, the other student throws a ball verti-cally upward at the same speed. The secondball just misses the balcony on the way down. What is the magnitude of the velocity ofthe first ball as it strikes the ground?
Inspector Carol Ketchum is in pursuit of a Midnight Chemical truck that has spread waste solvents, mostly cis-1,2-dichloroethene, in a uniform layer 2 mm thick on the roadway. She arrives 20 min after the truck has finished emptying its load. Is ..
A spherical shell contains three charged objects. The first and second objects have a charge of -19.0 nC and 37.0 nC respectively. What is the charge on the third object
How likely is it the conflicts in the Middle East will be resolved? What do you see as the time frame to resolution and how would that resolution process look?
the index of refraction of the core of a piece of fiber optic cable is 1.76. if the index of the surrounding cladding
A skateboarder shoots off a ramp by a velocity of 7.1 m/s, directed at an angle of 51° above the horizontal. The end of the ramp is 1.2 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as t..
A 0.99-cm-diameter microscope objective has a focal length of 2.6 mm. It is used in visible light with a wavelength of 532 nm. What is the objective's resolving power if used in air
Then, 25 s later, the cyclist is 45 m due north of the flagpole, going due east with a speed of 12 m/s. For the cyclist in this 25 s interval, find out each of the following. (a) displacement (b) average velocity (c) average acceleration
A cart of mass m, moves with a speed v on a frictionless air track and collides with an identical cart that is stationary. what is the final kinetic energy of the system
A single string of length 3.22 meter is made up of two separate shorter strings, C and D, spliced together. Evaluate what is the length of string C
what is the magnitude and direction of the force
a truck is traveling at 11.1 ms down a hill when the brakes on all four wheels lock. the hill makes an angle of 10.0deg
A marble is rolled down a ramp with a height of .15 m. The marble travels a distance of 1.38 m. What is the velocity of the marble
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