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BAED-PHYC2121 General Physics 1
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11.4 Stress, Strain, and Hooke's Law
A uniform pressure of 21 × 105 N/m2 is applied to all six sides of a copper cube. What is the percentage change in volume of the cube? (for copper, B = 14 × 1010 N/m2)100%
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Iced tea is made by adding ice to 1.7 kg of hot tea, initially at 80°C. How many kg of ice, initially at 0°C, are required to bring the mixture to 10°C? (Lf = 3.33 × 105 J/kg, cw = 4 186 J/kg⋅°C)
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11.1 General Features of Harmonic Motion
If a simple harmonic motion is described by100%
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A ventilation fan with a moment of inertia of 0.034 kg·m2 has a net torque of 0.14 N·m applied to it. What angular acceleration does it experience?0%
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Water is being sprayed from a nozzle at the end of a garden hose of diameter 2.5 cm. If the nozzle has an opening of diameter 1.0 cm, and if the water leaves the nozzle at a speed of 14 m/s, what is the speed of the water inside the hose?
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Water pressurized to 3 × 105 Pa is flowing at 6.0 m/s in a pipe which contracts to 1/3 of its former area. What are the pressure and speed of the water after the contraction? (Density of water = 1 × 103 kg/m3.)
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A spool of thread has an average radius of 1.00 cm. If the spool contains 135 m of thread, how many turns of thread are on the spool? "Average radius" allows us to not need to treat the layering of threads on lower layers.0%
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A Ferris wheel, rotating initially at an angular speed of 0.50 rad/s, accelerates over a 4.0-s interval at a rate of 0.10 rad/s2. What angular displacement does the Ferris wheel undergo in this 7.00-s interval?0%
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A 0.40-m radius automobile tire accelerates from rest at a constant 2.0 rad/s2 over a 5.0 s interval. What is the tangential component of acceleration for a point on the outer edge of the tire during the 5.0-s interval?0%
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The surface of the Sun has a temperature of about 5,780 K. If the radius of the Sun is 7 × 108 m, determine the power output of the sun. (Take e = 1, and σ = 5.67 × 10−8 W/m2⋅K4).
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