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A bungee cord is stretched between two poles with a force of 405 N. The length of the cord is 34 meters and it has a mass of 5.7 kg. What is the velocity of a wave on this bungee cord?
An airplane of mass 1.40 x 10^4 kg is in level flight, initially moving at 56.0 m/s. Find the speed of the airplane after it has traveled 4.4 102 m
he 5.0- block is pulled to the right with a force as shown in the figure . The coefficient of static friction between all surfaces is 0.55 and the kinetic coefficient is 0.3, illustrate what is the minimum value of needed to move the two blocks?
A 24.0 kg gold bar at 27.0°C is placed in a large, insulated 0.800 kg glass container at 15.0°C with 2.00 kg of water at 25.0°C. Calculate the final equilibrium temperature
What is the least radius of the circular path? (b) At this radius, what is the force causing the centripetal acceleration of the pilot.
A spring is first stretched 2.0 cm from its unstressed length. It is then stretched an extra 1.8 cm. How does the work required for the second stretch compare to the work needed for the first stretch (give a ratio of second to first)? (Be sure you ar..
Four charges are located in a plane as follows: q1 = -5 uC at (4,0) m; q2 = -3 uC at (4,4) m; q3 = -4 uC at (0,4) m; q4 = -2 uC at (0,0) m. Find the magnitude and direction of the resultant field at (2,2)
A piano wire with mass 2.65g and length 79.0cm is stretched with a tension of 34.0N. Calculate the average power carried by the wave
a 115 granite cube slides down a 40 frictionless ramp. at the bottom just as it exits onto a horizontal table it
An RC circuit, hooked up to a battery as shown in the figure (box with ε to a capacitor, with resistance and an opening on the top of the box), starts with an uncharged capacitor. The resistance in the circuit is R = 828.0 Ω the capacitor has capacit..
A storage tank has a diameter of 80 ft, a height of 25 feet, andcontains oil to a height of 15 ft. The suction pumps, whichcan handle 15, 000 bbl/d are started, but the safety valves areclogged and a vacuum is drawn in the tank.
In 1986 a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 160 km long, What is the mass of this iceberg, given that the density of ice is 917 kg/m3
A car of mass 1200kg is heading east at 10m/s. A second car of mass 1500kg is heading west at 20.0m/s. They meet in an elastic collision. What was the initial kinetic energy of the system
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