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A block of mass 5 kg hangs on a spring. When a second block with an identical mass of 5 kg is tied to the first, the spring stretches an additional ho = 1.5 m. Now the string is burned and the second block falls off.
How far above its original position does the remaining block attain its maximum speed?
What is the maximum speed attained by the remaining block?
A missile is shot straight up into the air. At the peak of its trajectory, it breaks up into three pieces of equal mass, What is the angle of the remaining piece
What should be the spring constant of a spring designed to bring a 1500 car to rest from a speed of 80 so that the occupants undergo a maximum acceleration of 5.
A rectangle has an area of 28.14 cm2. When both the length and width of the rectangle are increased by 1.80 cm, Calculate the length of the longer of the two sides of the initial rectangle
A series of equipotential lines are shown right. Points A- D are shown, An electron travels from A to B, and then to C, and then to D. What is the work done on the electron by the field, as measured in eV
A hot air heating system rated at 84,000 Btu/hr has an efficiency of 65%. The furnace fan can move 225 ft3 of air per minute. If the air enters the furnace at 60.0°F, determine the temperature of the outlet air.
A window of a car is found to be covered with 0.6cm of ice. If the area of the window is 1 m2, and the ice is at -12 degrees Celsius, what is the minimum heat required to melt all the ice
The only two forces acting on a body have magnitudes of 20N and 38N and a directions that differ by 76 degrees. What is the mass of the body
Two sources have sound levels of 104dB and 62.3 dB. what is their combined intensity
A diffraction grating produces a first-order maximum at an angle of 25.0 degree. What is the angle of the second-order maximum
A rigid, well insulated container contains 10 kg of water. A motor connected to a paddle wheel is used to stir the water at a rate of 100 rad/s. How much toque does the motor need to supply (in N-m) in order for the water to heat up by 10?C in one..
What is the internal resistance of a 12.0-V car battery whose terminal voltage drops to 9.5V when the starter motor draws 77A
A ballistic pendulum apparatus has a hinged catcher of mass 250.0 g. What is the muzzle velocity of the gun
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