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Four identical charges (+2.9 µC each) are brought from infinity and fixed to a straight line. The charges are located 0.59 m apart. Decide the electric potential energy of this group.
A nail gun fires a nail into a piece of wood. The nail is going a velocity of 9.0 m/s right before entering the wood. From entering the wood, how long does it take the nail to come to a stop
A light spring of force constant k = 156 N/m rests vertically on the bottom of a large beaker of water. A 5.55-kg block of wood (density = 650 kg/m3) is connected to the spring, and block-spring system is allowed to come to static equilibrium. Wha..
A 2.8 kg solid sphere (radius = 0.20 m) is released from rest at the top of a ramp and allowed to roll without slipping, When the sphere reaches the bottom of the ramp
The cheetah can reach a top speed of 114 km/h (71 mi/h). While chasing its prey in a short sprint, a cheetah starts from rest and runs 49 m in a straight line, Determine the cheetah's average acceleration during the short sprint
A 1100kg automobile travels at 80km/h. What net work would be required to bring it to a stop
A point on the rim of a 0.25-m-radius rotating wheel has a centripetal acceleration of 4.0 m/s^2. What is the angular speed of the wheel
an automobile battery has an emf of 12.60 v and an internal resistance of 0.076 0?. the headlights together have an
a current of 0.97a flows through a copper wire 0.44mm in diameter when it is connected to a potential difference of
A 31.2cm diameter coil consists of 17 turns of circular copper wire 1.70mm in diameter. The resistivity of copper is 1.68×10-8 Ohm m. Determine the current in the loop
An idealized voltmeter is connected across the terminals of a 12.5-{\rm V} battery, and a 73.5-\Omega appliance is also connected across its terminals. What is the internal resistance of the battery?
A block of mass m=3.15kg is pushed a distance d=2.05m along a frictionless horizontal table by a constant applied force of magnitude F=16.0N directed at an angle Theta=38.0 degrees below the horizontal
A coin is placed 15.0 centimeter from the axis of a rotating turntable of variable speed. Find the coefficient of static friction between coin and turntable
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