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A 0.400 kg object is swung in a vertical circular path on a string0.460 m long. If its speed is3.60 m/s at the top of the circle, what is the tension in the string there?
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Gayle runs at a speed of 3.20 m/s and dives on a sled, initially at rest on the top of a frictionless snow covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together th..
A block is pushed up a 20.0 (degrees) frictionless incline with an initial speed 12.0 m/s. How much time does it take to return to its starting position
A uniform steel beam has a mass of 1640 kg. On it is resting half of an identical beam. What is the vertical support force at each end.
A stone is thrown upward from the top of a building at an angle of 30.0° to the horizontal and with an initial speed of 19.0 m/s, Find the horizontal range of the stone
Oil with index of refracton n=1.25 floats on water with index n=1.33. For normal incidence, what maximum film thickness will reflect red light of wavelength 650nm most strongly
a cubic cardboard box of side a 0.430 m is placed so that its edges are parallel to the coordinate axes. there is no
A beam of protons, each with kinetic energy of 40MeV, approaches a step potential of 30MeV. What fraction of the beam is reflected and transmitted
What is the integral from s to p of B dot dL, where an integral is taken along the dotted path shown, first from point P to point R at (x,y) = (0.707d, 0.707d), and then to point S at (x,y) = (0.6d, 0.6d).
The current through two identical light bulbs connected in series is 0.25 amps. The voltage across both bulbs is 100 volts. Find the resistance of a single light bulb.
Two steel guitar strings have the same length. String A has a diameter of 0.59 mm and is under 450.0 N of tension. Find the ratio of the wave speeds
A disk has a moment of inertia of (3.0E-4) kg.m^2 and rotates with an angular speed of 3.5 rad/sec. What net torque must be applied to bring it to rest within 3s
Consider a thick spherical shell of inner radius R/2 and outer radius R. Calculate the total electrostatic potential energy of the thick shell
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