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A block of unknown mass is attached to a spring of spring constant 6.2 N/m and undergoes simple harmonic motion with an amplitude of 14.3 cm. When the mass is halfway between its equilibrium position and the endpoint,its speed is measured to be 35.6 cm/s. Calculate the mass of the block. Answer in units of kg.
Waves travel along a 100-m length of string with a mass of 55 g, which is held taut by a tension of 75 N. What is the speed of the waves
A heat engine operates between two reservoirs at temperatures of 19.5oC and 313oC. What is the maximum efficiency possible for this engine
A solid, uniform ball rolls without slipping up a hill, asshown in the figure . At the top of the hill, it is moving horizontally; then it goes over the vertical cliff. How fast is it moving just before it lands
A subway train starts from rest at a station and accelerates at a rate of 1.55 m/s2 for 11.0 s. Find the total distance covered
Wool is rubbed against a plastic ruler. how many electrons have been transferred to the ruler
A thin spherical shell of mass 0.450 kilogram and diameter 0.230 meter is filled with alcohol (ρ = 806kg/m3). Evaluate the acceleration of the alcohol-filled shell
Many communications satellites orbit the earth in geostationary orbits. (They appear to remain in the same positions in the sky for observers on the earth's surface.) If such a satellite orbits at a height of 40,000 km, estimation the time delay in a..
A rectangle has a length of 5.50m and a width of 12.0m. What are the perimeter and area of this rectangle
A 0.45-kg crow lands on a slender branch and bobs up and down with a period of 1.1 s. An eagle flies up to the same branch, scaring the crow away and lands.
A father pushes his child on a swing so that the child's speed is 9.00 m/s at the lowest point of his path. What force does the child exert on the seat if his mass is 18.0 kg
A tank whose bottom is a mirror is filled with water to adepth of 20.4 cm. A small fish floats motionless 6.60 cm under the surface of the water. What is the apparent depth of the fish when viewed at normalincidence to the water
question a uniform 1200n beam that is 3.50 m long is suspended horizontally by two vertical wires at its ends. a small
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