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When air pollution is high,ozone can reach .60 ppm. How many molecules of ozone are present per liter of polluted air if the barometric pressure is 755 mmHg and the temperature is 79 degrees Farenhe
A 1.2 kg block is initially at rest on a horizontal frictionless surface when a horizontal force in the positive direction of an x axis is applied to the block. The force is given by F(x) = (2.5 -
An anakysis of river water yields C : N : P = 41.3 : 2.4 : 0.3. Compare this to the Redfield Ratio of C : N : P = 106 : 16 : 1.What is the CEC (in meq/100 g) of a soil that contains 25.8 mcg/ml Ca2+,
a) what is the average acceleration of the bullet thru the board? b) what is the total time the bullet is in contact with the board? c) What thickness of the board would it take to stop the bullet,
Liquids A and B form ideal solutions. A mixture of the vapors of A and B, which is 40 mole % in A, is contained in a piston and cylinder arrangement. This arrangement is kept at a certain constant t
Calculate the total energy of the child-stick-Earth system, taking both gravitational and elastic potential energies as zero for x = 0.
Benzene and toluene form essentially ideal solutions. A particular mixture that consists of two moles of benzene and three moles of toluene has a total vapor pressure of 280 mmHg at 60 degrees celci
A mixture of A and B is found to obey Raoult's Law. At 60 degrees celcius the vapor pressure of pure A is 400 mm HG and that of pure B is 650 mm HG. Find the composition of the vapor phase above a
A spring with a mass on the end of it hangs in equilibrium a distance of 0.4200 m above the floor. The mass is pulled down a distance 0.0600m below the original position, released, and allowed to os
Two long parallel wires 5.50 cm apart carry 15.5 A currents in the same direction. Determine the magnetic field strength at a point 12.0 cm from one wire and 13.2 cm from the other.
A concave mirror has a focal length of 34.1 cm. The distance between an object and its image is 52.8 cm. Find (a) the object and (b) the image distance assuming that the object lies beyond the cente
Assuming the energy of a single pulse is delivered to a volume of the cornea 1 mm3, and assuming the pulses are delivered so quickly that the energy deposited has no time to flow out of that volume,
A common experiment to determine the relative reactivity of metallic elements is to place a pure sample of one metal into an aqueous solution of a compound of another metallic element.
This change leads to the appearance of a 7.8-mA current in a nearby secondary coil. The secondary coil is part of a circuit in which the resistance is 12 O. The mutual inductance between the two coi
If the annual production of acetyl salicylic acid in the U.S.A. were converted to 5-grain aspirin tablets, approximately how many tablets would there be for each person?
A 5.0 mm diameter proton beam carries a total current of 1.5mA. The current density in the proton beam, which increases with distance from the center, is given by J = Jedge(r/R), where R is the radi
A car moves with a speed v on a horizontal circular highway turn of radius is R = 100. Assume the height of the car's center of mass above the ground is h = 1 m, and the separation between its inner
The given data of pyroxene analysis is given w%. SiO2=48.90, TiO2=.12, AL2O3=3.86, Fe2O3=4.65, Cr2O3=0, FeO=25.35, MnO=.51, MgO=6.87, CaO=7.96, Na20=.58, K20=.20, H2O+=.57, H2O-=.35, TOTAL 99.92.
What is its characteristic wavelength? [Hint: Recall that the kinetic energy of a moving object is E=1/2mv^2 , where m is the mass of the object and v is the speed of the object.]
(a) What is the electric force exerted on an electron when it is 3.0x10^-15 m from the center of the nucleus? (b) What is the acceleration of the electron at this point?
The AC storage has an rms voltage of 100.0V and as angular frequency of 10.0*10^3 rads/sec find: (a) Find the resistance of the capacitor and the inductor
What is the velocity of A relative to B? (Express your answer in terms of the unit vector I-hat and J-hat, where I-hat is toward the east)
Since the freezing point of a solution depends on the relative number of particles, what would you caclcu;ate to be the freezing point of 0.1 m solutions in water of (a) NaCl, (b) BaCl2? Assume that
You throw a ball, m = 2kg from the top of a 30 m cliff, with a initial velocity of 25 m/s at an angle of 50 degrees. a) Using energy considerations, what is the maximum height of the ball?
Halothane, C2HF3BRCl, is a commonly used gaseous anesthesia. One suggested dosage is 3.0% halothane by volume. What is the partial pressure of halothane if air administered to the patient is at a p