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The New River Gorge bridge in West Virginia is a 518 meter long steel arch. Determine how much will its length change between temperature extremes -15°C and 31°C?
___________cm
An ideal gas at 20 ?C consists of 2.2×1022 atoms. 5.9J of thermal energy are removed from the gas. What is the new temperature in ?C
A car moving at 36 m/s passes a stationary police car whose siren has a frequency of 500 hz. What is the change in the frequency (in Hz) heard by an observer
Calculate the mass of a solid gold rectangular bar with dimensions 3.50 cm x 14.0 cm x 27.0 cm. Density of gold is 1.93E4 kg/m^3
Every of the eight conductors in Figure 29-68 carry 2.70 A of current into or out of the page. Two paths are indicated for the line integral. What is the value of the integral for (a) path 1 and (b) path 2?
A circuit contains six 240 ohm lamps with 60 W bulbs and a 10 ohm heater connected in parallel. the voltage across the circuit is 120 V. If the circuit has a fuse rated at 12 A, would it melt if everything is on.
when one mirror of a michelson interferometer is moved a distance of 0.5 mm 2000 fringes are observed find the
Petrus takes a cold glass of cola from fridge. He puts 3 cubes of ice into it. He laeves the glass on a table in a warm room for 5 minutes. He notices that the ice cubes have become smaller. The outside of the glass is now wet. What is the reason ..
A coin placed 30.4 cm from the center of a rotating, horizontal turntable slips when its speed is 48.8 cm/s. (b) What is the coefficient of static friction between coin and turntable?
A block of mass m = 0.875 kg is fastened to an unstrained horizontal spring whose spring constant is k = 81.3 N/m. The block is given a displacement of +0.134 m, where the + sign indicates that the displacement is along the +x axis, and then released..
while walking between gates at an airport you notice a child running along a moving walkway. estimating that the child
A water pipe decreases in diameter from 16 cm to 8 cm. In the wider section the average velocity is 30.0cm/s. determine the volume rate in the narrow section
how to Calculate the acceleration of the system. Assume the magnitude of the acceleration is the same during starting and stopping.
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