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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.
One particle has a mass of 3.00 multiplied by 10-3 kg and a charge of+7.80µC. A second particle has a mass of 6.00 multiplied by 10-3 kg and the same charge. The two particles are initially held in place and then released.
A small marble is dropped from a height of 12 m and comes to rest after penetrating2.3 cm into sand. A) Determine the marble's impact speed at the sand's surface. B) Determine the marble's deceleration while impacting with the sand.
When a potential difference of 19 V is applied to a given wire, it conducts 0.30 A of current. What is the resistance of the wire
What is the potential difference across one wire of a 70 m extension cord made of 16 gauge copper wire carrying a current of 9 A at room temperature (20degrees Celsius)
A box of mass 52.0 kg is connected to a second box with a mass of 58.0 kg. Both are sitting on a horizontal surface, find the magnitude of the tension in the string between the two boxes
an air-cored solenoid with length 30 cm area of cross-section 25 cm2 and number of turns 500 carries a current of 2.5
A fibre optic cable or "light pipe" consists of a central strand of material surrounded with an outer coating. The interior portion of the pipe has an index of refraction of 1.55. If all rays stricking the interior walls of the pipe by incident angle..
If the index of refractions of the red light is 1.4925, what is the index of refraction of the blue light?
The work function of a particular substance is 4.53 × 10-19 Joule. Find the photoelectric cutoff wavelength for this material
find the temperature of a cavity having an irradiance at 200 nm that is 3.82 times the irradiance at 400 nm.2. a 2.30
Only two forces act on an object (mass = 3.30 kg), as in the drawing. (F = 79.0 N.) Find the magnitude and direction (relative to the x axis) of the acceleration of the object
The Hubble Space Telescope orbits the Earth at an altitude of approximately 612 km. Its mass is 11,100 kg, What is the Hubble's total energy
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