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Donovan Bailey set a world record for the 100-m dash on July 27, 1996. find the time that was recorded on Earth
100 microliters of a solution containing 1 mM magnesium chloride are combined with 10 microliters of a solution containing 10 mM magnesium acetate and diluted to a final volume of 1.5 mL. What is th
A 599 Hz sound wave travels through a substance. What is the speed of sound in the substance
Sulfur, S8, combines with oxygen at elevated temperatures to form sulfur dioxide. If 192 oxygen molecules are used up in this reaction, how many sulfur molecules reacted
A specimen of oil having an initial volume of 600cm3 is subjected to a pressure increase of3.6×106Pa, What is the bulk modulus (in Pa) of the material
Calculate the radiation dosage (in grays) for an 85-kg person that is exposed for 7.0 seconds to a 3.0 Ci source of beta radiation. Assume that 100% of the radiation is absorbed and each beta partic
a laser beam is aimed at a 1.0 cm thick sheet of glass at an angle 30^{\circ} above the surface of the glass. What is the laser beam's direction of travel in the glass
The mass of an electron is 9.11× 10-31 kg. What is the uncertainty in the position of an electron moving at 1.00 × 106 m/s with an uncertainty of ?v = 0.01 × 106 m/s
Assuming that the smallest measurable wavelength in an experiment is 0.670 fm (femtometers), what is the maximum mass of an object traveling at 605 m·s-1 for which the de Broglie wavelength i
What would be the speed of the following particles if they had the same wavelength as a photon of red light (? = 750.0 nm)
An asteroid orbits the Sun at a constant distance of 4.080e+11 meters. What is the orbital speed of the asteroid
A certain rifle bullet has a mass of 5.73 g. Calculate the de Broglie wavelength of the bullet traveling at 1073 miles per hour. Physical constants can be found here.
Three resistors are connected in parallel to a 12.0 V battery. Two of the resistance values are 58\Omega and 42\Omega. what is the value of the third resistor
What is the chlorine flow rate at the reactor pressure and temperature. (b) If the etching rate of silicon is 0.50 ?/min, and the wafer is 300 mm in diameter, how many moles of silicon are etched pe
If the initial electric Force is, F, and the electron were moved to one third he original distance toward the proton, what would be the new electrical force
The escape speed of a particular planet with a radius of 8.600e+6 m is 14,500 m/s. What is the mass of the planet
Draw the structures of all monobromo derivatives of hexane, C6H13Br, which contain a 6-carbon chain.
A 2.00 meter long, straight rod is 1.00 mm in diameter an is made of pure copper (specific gravity 8.93). What is the potential difference between the ends on the wire
Calculate the amount of water that must be supplied to a heat exchanger that cools 100 kg/hr of tomato paste from 90C to 20C. The water enters the heat exchanger at a temperature of 8oC
A convex spherical mirror has a radius of curvature of 10.6cm. Calculate the size of the image
The concentration of Pb2+ in a commercially available standard solution is 1.000 mg/mL. What volume of this solution should be diluted to 6.0 x 10^2 mL to produce a solution in which the concentatio
A horizontal wire of length 0.57 m, carrying a current of 8.0 A, is placed in a uniform external magnetic field. Determine the magnitude of the external magnetic field
The reaction between ethyl iodide and hydroxide ion in ethanol (c2H5OH) solution, C2H5I(alc) + OH -(alc) C2H5OH(l) + I -(alc) has an activation energy of 86.8 kj/mol and a frequency factor of 2.1*10
A proton is confined to a nucleus that has a diameter of 5.7 10-15 m. what is the minimum uncertainty in its momentum
a sound wave of frequency 1225 hz travels through the air directly toward a wall, what is the initial wavelength of the sound