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The electric field of a capacitor remains unchanged, if the plates change their separation, but the charges remain the same. Show with equations the new energy of the capacitor relative to the initial energy, if the separation is doubled.
A positive charge +q1 is located to the left of a negative charge -q2. On a line passing though the two charges, there are two places where the total potential is zero. What is the distance between the charges
A wheel accelerates from rest to 12 rad/s at a rate of 78 rad/s^2. Through what angle (in radians) did the wheel turn while accelerating
A glass flask whose volume is 1000cm^3 at a temperature of 0.400^ C is completely filled with mercury at the same temperature. When the flask and mercury are warmed together to a temperature of 52.0 C, a volume of 8.25cm^3 of mercury overflows the..
water is flowing through a channel that is 12 m wide with a speed of .75ms. the water then flows into four identical
A large circus ride has a centripetal acceleration at 6.0 m/s2. If the circular ride has a radius of 11.0 m, what is its velocity at the edge
A particle of mass m moves in a conservativ force field. Find the Lagrangian function and the equation of motion in cylindrical coordinates (ρ,φ,z).
As part of a carnival game, a 0.503-kg ball is thrown at a stack of 15.8-cm tall, 0.383-kg objects and hits with a perfectly horizontal velocity of 10.8 m/s. what is the moment of inertia of the object
The electric potential at a position located a distance of 18.3 mm from a positive point charge of 8.50×10-9C and 13.3 mm from a second point charge is 1.10 kV
A Nichrome wire is used as a heating element in a toaster. From the moment the toaster is first turned on to the moment the wire reaches it maximum temperature, What is the temperature change in the wire
a 43.5 kg boy and a 56.0 kg girl are on the surface of a frozen lake 15.0 m apart. using a rope the boy exerts a
An 18-year-old runner can complete a 10.0 km course with an averagespeed of 4.57 m/s. A 50-year-old runnercan cover the same distance with an average speed of 4.42 m/s. How much later (in seconds) should theyounger runner start in order to finish ..
a bobsled slides down an ice track starting at zero initial speed from the top of an 44.9 m high hill. the acceleration
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