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A 2.2 kg brick is dropped from a height of 1.0 m onto a small nail stuck vertically in a piece of wood. Assuming the nail does not move in very much, how much heat is produced in the system when the block hits and sticks onto the top of the nail. (You can assume all of the energy becomes thermal energy gained by the nail.)
You are studying guitar strings and are able to measure a few of (but not all) the standing wave frequencies for a particular string. what is the highest possible value for the fundamental frequency
A U-shaped tube open to the air at both ends contains some mercury with a density of 13,600 kg/m3. Calculate the gauge pressure at the water-mercury interface
A body slides down a plane inclined at 40 degrees to the horizontal, with an acceleration of 2.3 meters/second^2. Determine the coefficient of kinetic friction
As a parallel-plate capacitor with circular plates 19 cm in diameter is being charged, the currentdensity of the displacement current in the region between the plates is uniform and has a magnitude of 16 A/m2.
A potential difference of 5.80 V will be applied to a 35.00 m length of 18-gauge tungsten wire, Calculate the rate at which thermal energy will appear in the wire
An elevator has a mass of 1170kg and carries a maximum load of 786 kg. A constant frictionalforce of 4260 N retards its motion upward. The accelerationof gravity is 9.8 m/s2.
Nichrome wire of cross-sectional radius 0.791 mm is to be used inwinding a heating coil. If the coil must carry a current of9.25 A when a voltage of 1.20x102 V is applied acroosits ends, find a) the required resistance of the coil and b) the lengt..
A glass surface (n = 1.65) has a layer of water (n = 1.33) on it. Light in the glass is incident on the glass-water interface. Find the critical angle for total internal reflection
Calculate the minimum angle above the horizontal at which Hiawatha must aim in order to outrun the arrow.
Calculate the efficiency of a fossil-fuel power plant that consumes 450 metric tons of coal each hour to produce useful work at the rate of 900 MW
Let's say you measure an average acceleration to be 0.4045 ms-2. What is the height (in centimeters) of the riser block
stronomers discover an exoplanet (a planet of a star other than the Sun) that has an orbital period of 3.13 Earth years in its circular orbit around its sun, Find the radius of the exoplanet\'s orbit
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