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Suppose we have an isotropic substance, for which the coefficient of linear expansion, α(alpha), is the same in all directions. Show the volume expansivity β(beta)=3α.
Hint: You may assume ΔV <<V and you will find it useful to take advantage of the approximation,
(1 + ε)^p ≈ 1 + pε, provided pε << 1.
An electron is accelerated from rest through through a potential difference of 35,000 V. What is the electron's kinetic energy in Joules
You measured the speed of sound to be 384.9 m/s. Your lab partner measured it to be 342.2 m/s. What was the percent difference between these values
A roller coaster (370 kg) moves from A (5.00 m above the ground) to B (25.0 m above the ground). What is the change in the car's kinetic energy
Three identical metal spheres are charged so that sphere A has a charge of 220 ?C, sphere B has a charge of -370 ?C, What is the final charge on each sphere
A 20.0 cm long organ pipe is filled with air and is open at one end and closed at the other. What is the frequency of the third mode
Two 34 charges are attached to the opposite ends of a spring of spring constant 150 and equilibrium length 50. By how much does the spring stretch
A curve of radius 35 m is banked for a design speed of 64 km/h. If the coefficient of static friction is 0.34 (wet pavement), at what range of speeds can a car safely make curve.
Find the two locations where an object can be placed in front of a concave mirror with a radius of curvature of 37cm such that its twice its size
A1.20-m-long wire has a resistance equal to0.320?. A second wire made of identical material has a length of1.90m and a mass equal to the mass of the first wire. What is the resistance of the second wire?
A large beach ball "weighs" 560g when there is no air inside. Fully inflated, it has a circumference of 252cm. A) Estimate the mass of the air inside the fully inflated beach ball. B) How much will the fully inflated beach ball "weigh"?
You stand at the center of a carousel spinning at rate w. You throw a ball horizontally with some velocity v from height h. How long does it take for the ball to hit the ground?
A volleyball is spiked so that its incoming velocity of +4.79 m/s is changed to an outgoing velocity of -12.0 m/s. find the magnitude of the impulse that the player applies to the ball
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