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You are spending the summer working for a chemical company. Your boss has asked you to determine where a chlorine ion of effective charge -e would situate itself near a carbon dioxide ion. the carbon dioxide is composed of 2 oxygen ions each with an effective charge of -2e and a carbon ion with an effective charge +3e. These ions are arranged in a line with the carbon ion sandwiched midway between the two oxygen ions. The distance between each oxygen ion and the carbon ion in 3.0 x 10^-11 m. Assuming that the chlorine ion is on a line that is perpendicular to the axis of the carbon dioxide ion and that the line goes through the carbon ion, what is the equilibrium distance for the chlorine ion relative to the carbon ion on this line? For simplicity, you assume that the carbon dioxide ion does not deform in the presence of the chlorine ion. Looking in your trusty physics textbook, you find the charge of the electron is 1.60 x 10^-19 C.
1.An electron has an energy of 2.3 ev. What is the energy of the electronic in J?
2.The shopping potential for a photoelectric cell is 5.7 v. Calculate the maximum kinetic energy of the emitted photo electrons in ev?
3.What is the energy in ev of an electron with a velocity of 6.2×10 6m/s
A mass m of helium gas is in a container of constant volume V. It is initially at pressure P and absolute (Kelvin) temperature T. Additional Helium is added, bringing the total mass of helium gas to 3m. After this addition, the temperature is found to be 2T. What is the final gas pressure?
1.The potential energy of a certain system of two charges increases as the charges are moved farther apart.What does this tell us about the sign of the charges?why?
2.Show that volt per meter is the same as newton per coulomb.
3.A student said"electric potential is always proportional to potential energy,why bother with the concept of potential at all?How would you respond?
If two equal charges, each of 1 C are separated in the air by a distance of 1 km, what would be the magnitude and kind of force between them?
1.How would you define membrane potential?
2.What are the factors that could affect the ion movement?
3.If the membrane allows only positive charges to get through it,what happens to the concentration of both sides of the membrane?
4.From what you have learned in Biology,why is membrane potential essential among plants and animals?
A 200 g object is whirled in a horizontal circle with a cord of radius 1.2 m at 2261.95 cm/s. The centripetal acceleration is .
The piston of a hydraulic automobile lift is 30 cm in diameter. What pressure, in
pascals, is required to lift a car of mass 1500 kg. Also express this pressure in
atmosphere.
The expansion tank of a house hold hot water heating system is open to the
atmosphere and is 10 m above a pressure gage attached to the furnace. What is
the gauge pressure at the furnace, in pascals? In atmosphere?
Copper has a density of 9 g/cm3 and a bulk modulus of 1.2 x 1011 N/m2. What isthe speed of a wave through it?
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#340153 on Dec 2023