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An infinitely large flat electrode is levitating an object that weighs 50 kg. That object has a surface charge of + 75 Coulombs. What is the mass density of the electrode?
A spherical cavity of radius 4.00 is at the center of a metalsphere of radius 18.5 . A point charge 6.00 rests at the very center of the cavity, whereas the metal conductor carries no netcharg Determine the electric field at a point 2.00 from the ..
A 60 skydiver can be modeled as a rectangular "box" with dimensions 21 41 1.8. What is his terminal speed if he falls feet first
A 0.300 kg} glider is moving to the right on a frictionless, horizontal air track with a speed of 0.900 m/s} when it makes a head-on collision with a stationary 0.150kg} glider. Find the final kinetic energy of first glider.
An elderly person with a body mass of 65 kg is walking while using a cane in one hand. what is the magnitude of the vertical ground reaction force
An object with a mass of 1.60kg is at rest on a horizontal, frictionless surface of a rink. What are the positions and speed of the object st the end of that time
A lighthouse sweeps its beam of light around in a circle once every 7.5 s. To an observer in a spaceship moving away from Earth, the beam of light completes one full circle every 15 s. What is the speed of the spacecraft relative to Earth?
Vector A points in the negative x direction. Vector B points at an angle of 60 above the positive x axis, Given A+B+C=0, find the magnitude of A and B
When a 0.2 kg mass is attached to a spring ( k = 196 N / m )on a horizontal frictionless surface and pulled 10.0 cm from equilibrium. The mass is released at time = 0 and undergoes SHM. In order to increase the frequency of the motion, one would have..
A cylinder contains a mixture of helium and argon gas in equilibrium at a temperature of 151? C. Boltzmann's constant is 1.38066 × 10?23 J/K, What is the rms speed of argon
a river has a 5m/s current due east. With respect to the water, the boats velocity is 12m/s at 60 degress north of east. What is the velocity of the boat relative to the earth
The current in a 120-V reading lamp is 2.5 A. If the cost of electrical energy is $0.090 per kilowatt-hour, how much does it cost to operate the light for an hour
In an aortic aneurysm, a bulge forms where the walls of the aortaare weakened. If blood flowing through the aorta (radius 1.0 cm)enters an aneurysm with a radius of 3.0 cm, how much on average is the blood pressure higher inside the aneurysm than ..
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