Calculate ground state energy and normalised ground
A particle of mass m is constrained to move between two concentric impermeable spheres of radii r = a and r = b (a < b). There is no other potential. Calculate the ground state energy and the normalised ground state wavefunction.
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Vector B has a magnitude of 43 and is pointing at an angle of 38 degrees south of west. Find the magnitude and direction of A+B.
A 30 g car rolls from a hill 12 cm high and is traveling at 154 cm/s as it travels along a 275 cm horizontal track. What is the momentum of the car?
A hiker shouts toward a vertical cliff 465 m away. The echo is heard 2.75 s later. (a) What is the speed of sound in air there? (b) The wavelength of the sound is 0.75 m. What is the frequency of the wave? (c) What is its period?
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A rifle is aimed horizontally at a target 54 {rm m} away. The bullet hits the target 2.0 {rm cm} below the aim point. What was the bullet's speed as it left the barrel?
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What are the arguments for and against the claim that hunter gatherers were the "original affluent society?" Summarize the arguments on both sides, and be sure to include examples to support your answer.
Describe one possible economic impact of redox reductions. How might that impact be lessened?
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