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The fundamental physical constant of quantum mechanics, h, has played an important role in each of the three theoretical advances (those relating to the blackbody spectrum, the photoelectric effect, and the structure of the H atom). Describe how h originated and explain how it served as the basis for new hypotheses in each of the three contexts. Don’t include more than 3 or 4 equations in your response. Use complete sentences.
A second electron directly below it exerts an electrostatic force on the first electron that exactly cancels the gravitational force. What is the distance between the two electron
Assume that the water pressure at the bottom of a tree is -0.1 MPa and that the water pressure at the top of the tree is -1.5 MPa. What will be the maximum height of the tree
A blue ball is thrown upward with an initial speed of 24.3 m/s, from a height of 1 meters above the ground. What is the speed of the blue ball when it reaches its maximum height
define the initial velocity of the ball.
The exhaust temperature of a Carnot heat engine is 250°C, What is the intake temperature if the efficiency of the engine is 27.0%
an electron and a proton are each accelerated through a potential difference pf 10.0 million volts. Find the momentum ( in MeV/c) and the kinetic Energy ( in MeV) of each and compare with the results of using the classical Formular.
A charging RC circuit controls the intermittent windshield wipers in a car. The emf is 12.0 V. What resistance should be used in the charging circuit
Hooke's law describes a certain light spring of unstretched length 33.0 cm. When one end is attached to the top of a doorframe and a 7.31 kg object is hung from the other end, the length of the spring is 42.0 cm.
A 1 kg mass (initially at rest) compresses a spring (spring constant 2500 N/m) by 0.2 m, and is released. What is the maximum height achieved by the two masses
A 0.25 harmonic oscillator has a total oscillation energy of 9.9 J. If the oscillation amplitude is 20.0 cm, what is the oscillation frequency?
A 77.0 kg man floats in fresh water with 3.00% of his volume above water when his lungs are empty, Calculate the volume of air he inhales--called his lung capacity--in liters
A uniform field of magnitude 1500 N/C points north. What is the force on an electron placed in the field
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