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A dentist's chair with a patient in it weighs 2000 N. The output plunger of a hydraulic system begins to lift the chair when the dentist's foot applies a force of 57 N to the input piston. Neglect any height dissimilarity between the piston and the plunger. What is the ratio of the radius of the plunger to the radius of the piston?
In classical electromagnetic theory, an accelerating charge e radiates energy at the rate W=(2/3)(a^2 e^2/c^3)ergs/s, what is the initial frequency of radiation that the atom emits
A pyrex beaker that holds 250 ml of water at 20 degrees celcius is filled to the brim. how much water (if any) will spill out of the beaker
cWe are depositing NiCr fim on a Si wafer for a MEMS device. We measure a stress of the film of 600 MPa using X-Ray diffraction. The film was deposited at 80 C. If there is no externally applied stress ( eg. Deformation), (a)What would the intrinsic ..
A tank of water sits at the edge of a table of height 2m. The tank springs a very small leak at its base, and water sprays out a distance of 1.4 m from the edge of the table. What is the water level h in the tank? (Assume the tank is open to the a..
1 you chose a an arbitary point to begin measuring the postion of the falling object. how fast was it going at the
A convex lens is made of crown glass with index of refraction n=1.5296 at 480.0 nm and n=1.5203 at 656.3 nm. the radius of curvature of each face is 6.500 cm. Find the focal length of the lens at each wavelength.
A mass on a spring bobs up and down over a distance of 27 cm from the top to the bottom of its pathfour times each second. What are its period and amplitude
A resistor and a capacitor areconnected in series to an ideal battery of constant terminalvoltage. At the moment contact is made with the battery, thevoltage across the capacitor is .....
The box of a well-known breakfast cereal states that one ounce of the cereal contains 107 Calories (1 food Calorie = 4186 J). what is the weight of the heaviest barbell
Find positions of four charges in a plane (+1C, -1C, +2C, -2C) that result in an equilibrium (zero net force on each charge). Report positions as four (x,y) pairs.
The ball is pulled to one side and released to swing as a pendulum, reaching a speed of 5.8 m/s as it passes through the lowest point. Illustrate what is the tension in the rope at that point?
A simple pendulum uses a steel wire as the "string." The length of this wire is 1.5 m at room temperature. What is the change in the period of the pendulum
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