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An electron starts from rest 15.0 cm from the center of a uniformly charged insulating sphere of radius 10.0 cm and total negative charge -3.00 μC. What is the maximum speed (in m/s) the electron can reach after releasing it? (Note: suppose a reference level of the potential V = 0 at r = ∞)
A 500 kg polar bear of average density 950 kg/m3 is stranded on a melting chunk of ice in the ocean. What is the smallest volume of ice that will keep the bear entirely above water
A drawing shows three identical springs hanging from the ceiling. Nothing is attached to the first springs, determine the weight of the block hanging from the third spring
A container holds 1.9 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 7.7x10-3 kg bullet with a speed of 630 m/s
An object fired at an angle of 39 degrees above horizontal takes 1.10 s to travel the last 12.5 m of its vertical distance, determine With what velocity was the object launched
A ball of mass M and radius R starts from rest at a height of h = 1.73 m and rolls down a ? = 25.8° slope, What is the linear speed of the ball when it leaves the incline
A meter stick and a two-meter stick have the same thicknesses and density. They are both placed upright and balancing on one end. Which one hits the ground first
An electron is traveling through a region of space in which the electric field is along the +x direction and has a magnitude of 2313 N/C. What is the acceleration of the electron? magnitude m/s2 direction
you are trying to determine the wavelength of a particular line of a samples emission spectrum using a diffraction
If you fire a cannonball straight upward with a startingspeed of 20m/s. how high does it go, and how long will it be in theair? What is the velocity before it strikes to the ground?
the drawing shows three particles far away from any other objects and located on a straight line. the masses of these
A 75 kg man is riding an escalator in a shopping mall. Theescalator moves the man at a constant velocity from ground level tothe floor above, What is the work done on the man
A sled is dragged along a horizontal path at a constant speed of 1.5 m/s by a rope that is inclined at an angle of 30.0° with respect to the horizontal, How much work is done by the rope on the sled
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