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A hammer of mass 200g is dropped from the top of a roof of the two storey building to the ground. Another hammer of equal mass fell from a coffee table to the ground. Given than the height of the two storey building and the coffee table are 10 m and 5 m respectively.
a. Show that a hummer dropped from two storey building roof does more work than a hammer falling from a coffee table.
b. Calculate the potential energy from the two heights.
A sledge loaded with bricks has a total mass of 17.5 kg and is pulled at constant speed by a rope inclined at 20.3° above the horizontal.
Two very large charged parallel metal plates are 10.0 apart and produce a uniform electric field of 2.80×106 between them. How much work has the electric field done on this proton
One way to measure on another planet or moon by remote sensing is to measure how long it takes an object to fall a given distance. A lander vehicle on a distant planet records the fact that it takes 3.17 for a ball to fall freely 11.26.
A uniform ladder 7.30 long weighing 435 rests with one end on the ground and the other end against a perfectly smooth vertical wall. What force does the wall exert on the ladder
the heating coil of a hot-water heater has a resistance of 20 and operates at 210 v. if electrical energy costs
Picture yourself in the castle of Helm's Deep from the Lord of the Rings. You are on top of the castle wall and are dropping rocks on assorted monsters that are 15.35 m below you. How long after you release the rock does this happen
A geiger counter registers a count rate of4,000 counts per minute from sample of a radiosotope. twelveminutes later the count rate is 1000 counts per minute.what is thehalf-life of the radiosotope?
Search the web for methods of power production, both commonly used and projected. Discuss the sources of energy and the efficiencies of using them for power production. How do these relate to what you've learned about Thermodynamics? Consider p..
A square coil of wire of side 3.00 cm is placed in a uniform magnetic field of magnitude 2.50 T directed into the page, find the average current induced in the coil during this rotation
A step-down transformer has 2000 turns on the primary and 300 turns on the secondary, what is the secondary voltage amplitude
A 30 gram particle undergoes SHM with amplitude of 2.0 mm and a maximum acceleration of magnitude2.0 multiplied by103 m/s2, and an unknown phase constant, Estimate what is the maximum speed of the particle
The resistivity of the copper is 1.7x10^(-8)Ω.m. Calculate the number of turns of wire needed if the radius of the solenoid is to be 0.52 centimeter and calculate the length of the solenoid in centimeter
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