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An object attached to a horizontal spring is oscillating backand forth along a frictionless surface. The maximum speed is 1.25m/s, and its maximum acceleration is 6.89 m/s2 . How much time elapses between an instant when the object's speed is ata maximum and the next instant when its acceleration is at amaximum?
two small plastic spheres are given positive electrical charges. when they are 20.0cm apart the repulsive force between
questionin an x-ray machine electrons are accelerated and then fired so that they are incident on a metal target. which
If a particular metal surface is hit by a photon of 4.3eV, and electron is ejected with the maximum velocity of 563,050 m/s. What is the work function of the metal, give answer in eV
An orchestra is tuning its instruments using a tone at a frequency of 440 Hz. A man comes zipping by on a very quiet, electric scooter at a speed of 28 m/s. What tone does the man hear as he approaches the orchestra
two protons are 3.0fm apart. 1fm 1 femtometer 1 x 10-15 m a. what is the magnitude of the electric force on one
A person who weighs 620 N is riding a 98-N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires
a copper piece of mass 10g is suspended by a vertical spring. The spring elongates 1 cm over its natural length to keep the piece in equilibrium. Find the elongation of the spring
parallel conducting tracks separated by 2.18 cm run north and south. there is a uniform magnetic field of 1.47 t
A 1.0-C charge is 15 m from a second charge, and the force betweenthem is 1.0 N. What is the magnitude of the second charge?
A car travels due east with a speed of 44.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. Find the velocity of the rain
Two girls decide to jump off a diving board. Katherine steps off the diving board. Anna runs straight off the diving board so that her initial velocity is solely horizontal. They both leave the diving board at the same time. Which one lands in the..
A car (mass = 1170 kg) is traveling at 42 m/s when it collides head-on with a sport utility vehicle (mass = 2330 kg) traveling in the opposite direction
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