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John's mass is 86 kg, and Barbara's is 55 kg. He is standing on the x axis at xJ = +9.0 m, while she is standing on the x axis at xB = +2.0 m. They switch positions. How far and in which direction does their center of mass move as a result of the switch?
A 120 gram ball moving to the right at 4 m/s catches up and collides with a 440 gram ball that is moving to the right at 1.2 meter per second. If the collision is perfectly elastic, determine what is the speed of the 120 gram ball after the collisi..
question a group of swimmers is resting in the sun on an off-shore raft. they estimate that 3.44 m separate a trough
A man wants to swim across a river that is flowing north to south at 5 m/s. He can swim at a speed of 7 m/s.The river is 1/4 of a km wide. find the vector components of the swimming man's net velocity
A flashlight on the bottom of a 3.70 m deep swimming pool sends a ray upward at an angle, What angle (in air) does the emerging ray make with the water's surface
A 200 kg object and a 500 kg object are separated by 1.2 m. A 150 kg object is placed half way between the two objects, What is the gravitational potential energy of the three masses
A dedicated sports car enthusiast polishes the inside and outsidesurfaces of a hubcap that is a section of a sphere. When he looksinto one side of the hubcap, he sees an image of hisface 26.0 cm in back of thehubcap.
Resistivity measurements on the leaves of corn plants are a good way to assess stress and overall health. What is the resistivity of the leaf tissue
A series LC circuit contains a 100 mH inductor, a 36.0 mF capacitor and a 12 V battery. The period of the electromagnetic oscillations in the circuit is
two infinitesimally small point charges of 2.0 microc each are initially stationary and 5.0 m apart. a how much work is
A horizontal power line carries a current of 4880 A from south to north. Earth's magnetic field (75.1 µT) is directed toward the north and is inclined downward at 52.0° to the horizontal. Discover the magnitude of the magnetic force on 110 m of the l..
A 1.0 N force is applied to the plunger of a hypodermic needle. The diameter of the plunger is 1.0 cm and that of the needle is 0.30 mm. With what force does the fluid leave the needle?
An object is placed to the left of a convex lens and on the optical axis. What is the magnification of the image formed by the lens
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