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Suspend the meter stick from two spring scales at the 15 centimeter mark and the 95 centimeter mark, and suspend a 500 gram mass from the 75 centimeter mark. Compute what the scale readings will be for both spring scales.
You are designing a pendulum clock whose period can be adjusted by ±10% by changing the length of the pendulum. Determine the range of change of length which provide this flexibility in the period
Hydroelectric power plants convert gravitational potential energy into more useful forms with flowing water downhill during a turbine system to generate electric energy. The Hoover Dam on the Colorado River is 211 m high and generates 4.00 x109 kW · ..
A swimmer, capable of swimming at a speed of 1.50 m/s in still water (i.e., the swimmer can swim with a speed of 1.50 m/s relative to the water), How long does it take the swimmer to cross the river
You brake your Porsche with constant acceleration from a velocity of 23.6 m/s to 12.5 m/s over a distance of 105 m. How much time elapsed during this interval
A block of mass 3kg is pulled along a flat surface with acord, which makes an angle of 250 above the horizontal.The tension in the cord is 16N, and the coefficient if kineticfriction between the block and the surface is 0.4. Dertermine the accelera..
Water impinges on a fixed turbine blade with velocity v. The blade is curved so that it deflects the water by 180 degrees from its original direction with no loss in speed. The mass of the water striking the blade per unit time is m. What is the forc..
A mass m is connected to the bottom of a vertical spring whose force constant is k. Attached to the bottomof the mass is a string that is connected to a second mass m, as shown in the figure.
A 31g ball rolls around a 46cm -diameter L-shaped track, shown in the figure, at 56rpm. Rolling friction can be neglected. find the magnitude of the net force of the track on the ball
The electric field component of a sinusoidal electromagnetic wave traveling through a plastic cylinder is given by the equation E = (5.35(V/m))cos[(1.39x10^7 (rad/m))x-(3.02x10^15(rad/s))t]
An airplane is flying with a velocity of 260 m/s at an angle of 30.0° with thehorizontal, as the drawing shows. When the altitude of the plane is2.0 km, a flare is released from theplane. The flare hits the target on the ground. What is the angleθ?
A steel aircraft carrier is 364m long when moving through the icy North Atlantic at a temperature of 2.4°C. By how much does the carrier lengthen as it is traveling in the warm Mediterranean Sea at a temperature of 21° C.
When there's a 277 Vrms across a device, the peak value of the alternating current is 4.1 A. How much power does the device comsume
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