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You with mass 70 kilogram decide to walk the plank. A massive uniform plank of length 4 meter and mass 100 kilogram lies flat but extends 1.50 meter beyond the edge of the building. Obtain the maximum distance from the edge of building that you can walk along the plank without falling?
A spaceship of mass 2.00 106 kg is to be accelerated to a speed of 0.820c. What minimum amount of energy does this acceleration require from the spaceship's fuel, assuming perfect efficiency?
A gas containing 9 moles is compressed adiabatically from an initial temperature of 288 K to a final temperature of 463 K, what is the work done by the piston
A 940 kilogram rock is whirled around in a horizontal circle at the end of a 1.3 meter long string. find what is the maximum allowable speed of the rock
the press box at a baseball park is 36.0 ft above the ground. a reporter in the press box looks at an angle of 13.1deg
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. Calculate the mass of the aluminum cup
A charge of +2?C and 6 mg is fired directly upward at a speed of 500 m/s. The charge reaches the top of its trajectory at 30 m. Ignoring gravity, find the magnitude and direction of the electric field necessary to accomplish this.
Calculate the velocity of the object for an elapsed time.
A simple harmonic oscillator has an amplitude of 5cm, a spring constant of 5.0N/m, and a maximum speed of 10 m/s. What is the speed when it reaches half of the amplitude
Three point charges have equal magnitudes, two being positive andone negative. These charges are fixed to the corners of anequilateral triangle, as the drawing shows. The magnitude of eachof the charges is 6.0 μC, and the lengths of the sides of t..
An inexpensive depth gauge used by scuba divers consists of a small diameter tube wrapped around the rim of a dial. An opening or port at one end allows water to enter when submerged.
Three point charges are placed as shown in the figure (Figure 1) . The positive point charge has a value 6.5nC. What is the net electric field at the position of the dot?
A man of mass 86.5 kg and density 970 kg/m3 stands in a shallow pool with 39.1 % of the volume of his body below water
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