You and a friend are playing with a Hoop to demonstrate some ideas of Rotational Physics. First, though, you want to calculate the Rotational Kinetic Energy of the Hoop as it rolls down a sidewalk without slipping. This means it has both linear kinetic energy and rotational kinetic energy. See a video of Hoop Rolling here. A Hoop can be modeled as a Hoop rotating about its axis through the center of the cylinder. This Hoop has a mass of 0.39 kg and a radius of 0.270 m. You'll need to look up the equation for the Moment of Inertia in your textbook. It is rotating with an angular velocity of 17.0 radians / second in the counter-clockwise (or positive) direction. You can use this to determine the linear velocity of the hoop (since it is rolling without slipping). What is the Total Kinetic Energy of the Hoop
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Physics, 21.06.2019 22:30
Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?
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Physics, 22.06.2019 02:30
The particle in a two-dimensional well is a useful model for the motion of electrons around the indole ring (3), the conjugated cycle found in the side chain of tryptophan. we may regard indole as a rectangle with sides of length 280 pm and 450 pm, with 10 electrons in the conjugated p system. as in case study 9.1, we assume that in the ground state of the molecule each quantized level is occupied by two electrons. (a) calculate the energy of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels. 9.27 electrons around the porphine ring (4), the conjugated macrocycle that forms the structural basis of the heme group and the chlorophylls. we may treat the group as a circular ring of radius 440 pm, with 20 electrons in the conjugated system moving along the perimeter of the ring. as in exercise 9.26, assume that in the ground state of the molecule quantized each level is occupied by two electrons. (a) calculate the energy and angular momentum of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels.
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Physics, 22.06.2019 06:30
=force × distance a. work b. velocity c. pressure d. momentum
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Physics, 22.06.2019 12:00
The mass of a bowling ball is 10 kg and the mass of a ping pong ball is 0.015 kg. if the two objects are 5 meters apart, what is the gravitational force ?
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You and a friend are playing with a Hoop to demonstrate some ideas of Rotational Physics. First, tho...
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