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Two small plastic spheres each have a mass of 2.0 g and a charge of -50.0 nC. They are placed 2.0 cm apart.
What is the magnitude of the electric force between the spheres?
Express your answer using two significant figures.
A cube of ice is taken from the freezer at -7.7°C and placed in a99g aluminum calorimeter filled with297g of water at room temperature of 20°C. What was the mass of the ice cube
The flywheel of a gasoline engine is required to give up 510J of kinetic energy while its angular velocity decreases from 630rev/min to 480rev/min, What moment of inertia is required
An 8.0 m, 100 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.40, what is the minimum angle that ladder can make with the floor before it slips.
A) Find v so that the rod swings up and is horizontal at the max height of the bob. B) Find the minimum v so that the rod will make a complete circle C) Find v so that the tension in the rod is zero at the top of its swing.
A force of 5.25 newtons acts on an object of unknown mass at a distance of 6.9..*.10^8 meters from the center of Earth. how far should the object be from the center of Earth
A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. How deep is the well
a piece of balsa wood with density 0.12gcm3 with mass of 30g in air is affixed to alead sinker with a mass of 400g.
A ball is thrown vertically upward with a speed of 11.0 m/s. How long does it take to reach its highest point
A bicycle wheel of radius 25 cm rolls a distance of 3.0 km. How many revolutions does the wheel make during this journey
Which best describes the total mechanical energy of a system in simple harmonic motion? A. zero as it passes the equilibrium point B. zero when it reaches the maximum displacement C. a maximum when it passes through the equilibrium point D. consta..
Find out separation between the two sources
A level pipe contains a nonviscous, incompressible fluid with a density 1200 kg/m3 that is flowing steadily. What is the speed of the flow at this second position
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