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The isotope lithium-7 has a mass of 7.0160 atomic mass units, andthe isotope lithium-6 has a mass of 6.0151 atomic mass units. Given that 92.58 percent of all lithium atoms found in nature arelithium-7, and 7.42 percent are lithium-6, calculate the average atomic mass of lithium.
A home run is hit in such a way that the baseball just clears a wall 13 m high, located 135 m from home plate. Find the time it takes the ball to reach the wall
The fastest pitched baseball was measured at 46 m/s, what force did he produce on the ball during this record-setting pitch
A block of mass m starts from rest at the top of a ramp of vertical height h . The block slides down frictionless ramp and reaches a speed v at the bottom . if the same bock were to reach a speed 3v at the bottom , it would need to slide down a fr..
A normal electric power cord consists of two parallel conductors about 4 mm apart. Estimate the magnetic field strength (in N/C) about 30 cm from a linear 25 m power cord connected to a 100 W lamp
You have a 0.421-kg sample of gas containing 1.99 moles. Calculate the rms, average, and most probable speeds of the gas\'s molecules
Consider a transverse wave were represented by function y= 2.3 sin(1.9x-25t), where y,x, and t are in units of m,m, and seconds respectively. Determine the wavelength in meters.
Two liquids, A and B, are mixed together, and the resulting temp is 22C. If liquid A has mass m and was initially at temp 35C, and liquid B has mass 3m and was initially at temp 11C, cacluatle the ratio of the specific heats of..
sound of a single frequency is sent into the system of pipes, one straight, the other consisting of two semi-circular paths of radii 20cm and 30cm. what is the lowest frequency that produces an intensity maximum on the output side
A cylinder contains a mixture of helium ans argon gas inequlibrium at a temperature of 150 degrees. What is the average kinetic energy of each type of molecule? What is the rms speed of each type of molecule?
A 300 hp car engine can deliver that maximum power at 6000 rpm. What is the engine's torque at that speed
In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide extra loudness. For example, the note at 1.10 102 Hz has two strings at this frequency. If one string slips from its normal tension of 5.90 102 N to 5..
A 658-kg boulder is dropped into a mine shaft that is 2.1 x 103 m deep. During the boulder's fall, the system consisting of the Earth, Determine the binding energy (in Joules) of the Earth-boulder system
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