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A 35 child slides down a playground slide at a constant speed. The slide has a height of 3.2 and is 7.2 long. Using energy considerations, find the magnitude of the kinetic friction force acting on the child.
A 50 kg box is being pushed a distance of 7.0 m across the floor by a force whose magnitude is 164 N. The force is parallel to the displacement of the box.
Scientists want to place a 4200.0 kg satellite in orbit around Mars. They plan to have the satellite orbit a distance equal to 1.6 times the radius of Mars above the surface of the planet. obtain the force of attraction between Mars and the satelli..
a neutron star and a black hole are 2.400e12 m from each other at a certain point in their orbit. the neutron star has
Two ice skaters, with masses of 40.0kg and 85.0kg , are at the center of a 60.0m -diameter circular rink. how long does the lighter skater take to reach the edge
An old-style TV set places 50 kV across two plates of a parallel plate capacitor. An electron is released very close to one plate, find the speed of the electron when it exits the hole in the plate
a daredevil is shot out of a cannon at an angle of 53 degrees with respect to the horizontal. the daredevil has an
An upright object is placed a distance in front of a converging lens equal to twice the focal length (f1) of the lens. On the other side of the lens is a converging mirror of focal length f2 separated from the lens by a distance 2(f1+f2).
Explain how could he use technical, human and conceptual skills to maintain an environment that encourages innovation and professionalism among the virus hunters?
An electron is in the ground state of an infinite square well. The energy of the ground state is E1 = 0.72 eV. What is the width of the square well
Throughout a hard sneeze, your eyes may shut for 0.41 s. If you are driving a car at 98 km/h during such a sneeze, how far does the car move during that time.
A girl is jumping on a trampoline and reaches a maximum height of 3.1 meters, h=3.1m. She has a mass of m = 53kg. what is the spring constant k in N/m of the trampoline
A charge +q is located at the origin, while an identical charge is located on the x axis at x = +0.76 m. Where should the third charge be located
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