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A stellar atmosphere consists almost entirely of hydrogen. Assume that 50% of the hydrogen molecules are dissociated into atoms and that the pressure is 100 Pa. Given that the binding energy of the hydrogen molecule is 4.48 eV, estimate the temperature.
A monochromatic ray of light is refracted by an angle of 72.0 degrees as it enters ice(1.31) from a piece of diamond(2.42), if the frequency of the light Ray is 2.96x10^4 cycles/second when it is in ice, then what was the light rays wavelength wh..
in a modified tug-of-war game two people pull in opposite directions not on a rope but on a 23.9-kg sled resting on a
You have a 250-? resistor and a 0.410-H inductor. Suppose you take the resistor and inductor and make a series circuit with a voltage source that has a voltage amplitude of 30.0V, What is the voltage amplitudes across the inductor
A machine part rotates at an angular speed of 0.24 rad/s; its speed is then increased to 2.06 rad/s using an angular acceleration of 0.49 rad/s2. Find the angle through which the part rotates before reaching this final speed. Answer in units of ra..
A 41.7 kg seal at an amusement park slides from rest down a ramp into the pool below. what is the work done by kinetic friction
A mass-spring system completes 7 full oscillations in a time of 14.4 seconds. What is the angular frequency of oscillation
If, as is typical, each of them breathes about 500 {rm{ cm}}^3 of air with each breath, approximately what volume of air (in cubic meters) do these astronauts breathe in a year.
A log splitter uses a pump with hydraulic oil to push a piston, which is attached to a chisel. find the power needed to operate the log splitter's pump
The rectangular loop in the drawing consists of 75 turns and carries a current of I = 4.9 A. compute the magnitude of the net torque exerted on the loop
The spring constant k = 700 N/m, mA=14 kg, and mB=18 kg. The collar Aslides on the smooth horizontal bar. The system is released from rest with the spring unstretched. Use conservation of energy to determine the velocity of the collar when it has ..
A square wire loop 11.0 cm on each side carries a clockwise current of 16.0 A. Find the direction of this magnetic field
A car travels at an average speed of 88.0 km/h for 1.00 h and then at an average speed of 40.4 km/h during a second hour. What is the car's average speed through the 2.00 h interval?
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