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Four identical particles, each having charge q and mass m, are released from rest at the vertices of a square of side L. How fast is each particle moving when their distance from the center of the square doubles?
A 13.5?F capacitor is connected to a power supply that keeps a constant potential difference of 26.0V across the plates. By how much did the energy change during the insertion
A 2.16 kg solid sphere (radius = 0.120 m) is released from rest at the top of a ramp and allowed to roll without slipping. what is its total kinetic energy
A particle moves along the x-axis. Its position varies with time according to the expression x(t) = -4t + 2t2, where x is in meters and t is in seconds. a) Determine the displacement of the particle in the two time intervals t = 0 to t = 1 s and t..
The sound level in decibels is typically expressed as ? = 10 log (I/I0), but since sound is a pressure wave, the sound level can be expressed in terms of a pressure difference. Intensity depends on the amplitude squared, so the expression is ? = 2..
A 300 lb bungee jumper wants to jump from the top of a 230 ft high bridge and be able to just touch the water below. what should the bungee cord's relaxed length, l, be for this jump
A solid disk of radius R and mass 2.66 kg is spinning at angular velocity 66.2 rpm about a vertical axis. What is the mass of the second disk
A 1.10 kg mass is at the center of a uniform spherical shell of mass 1.09 1020 kg and radius 1.05 106 m. Find the resultant gravitational force on the mass
The mass of the sled and its two riders in the figure below is 300 kg. find the magnitude of the centripetal force that acts on the sled
Four equal positive point charges, each of charge 5.7?C , are at the corners of a square of side 9.2 cm. What charge should be placed at the center of the square
For the cases in which total internal refection is possible from either the top or bottom surface of a layer, determine the amount by which the angle of incidence exceeds the critical angle.
the dentists chair uses a hydraulic press in which the radius of the smaller piston is 3 cm. the dentist wishes to
a 60 kg skier leaves the end of a ski-jump ramp with a velocity of 24 ms directed 25 degrees above the horizontal.
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