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If a neutral metal sphere is connected to ground through a wire, when a positively charged glass rod comes close to the sphere, electrons are attracted to the positively charged glass rod. When the wire is then cut, the metal sphere.
A 1200kg automobile travels at 90km/h. What is its kinetic energy? What net work would be required to bring it to a stop
A 1100kg- car rolling on a horizontal surface has speed = 65km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 3.0m. What is the spring stiffness constant of the spring
Use gauss law to find the electtic field E from a spherical +charged sphere of radius r
An electron is accelerated by a constant electric field of magnitude 290 N/C. (a) Find the acceleration of the electron.
A science student is riding on a flatcar of a train travellingalong a straight horizontal track at a constant speed of 10.0 m/s.The student throws a ball along a bath that she judges to make aninitial angle of 60.0 degrees with the horizontal and ..
A vertical spring of spring constant 115N/m supports a mass of 75kg. The mass oscillates in a tube of liquid. Estimate the damping constant b
q1. two packages at ups start sliding down a ramp 40 degrees from the horizontal package a is sliding down in front of
two charged balls one with a charge of 5.0 micro coulombs and the other with a charge of 2.4 micro coulombs are placed
After 1.86 days, the activity of a sample of an unknown type radioactive material has decreased to 88.8% of the initial activity
A 243-g ball falls vertically downward, hitting the floor with a speed of 2.48 m/s, Calculate the magnitude of the change in the ball's momentum
A 3.68-kg fish swimming 1.33 m/s swallows an absent-minded 6.42-kg fish swimming toward it at a velocity that brings both fish to a halt immediately after lunch
Assume that at sea-level the air pressure is 1.0 atm and the air density is 1.3 kg/m3. What would be the height of the atmosphere if the air density were constant
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