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The object is pulled down, released, and allowed to oscillate. T, the time required for one complete up-and-down oscillation, is given by the equation T = 2p(m/k)1/2. What is the unit for k, the spr
Carbon dating may be used todate (once living) materials that are between 100 and 40,000 yearsold. The half-life of the first-order decay of carbon-14 is 5730years. What percentage of carbon-14 rem
Carotenoids, present in all organisms capable of photosynthesis, extend the range of light absorbed by the organism. They exhibit maximal capacity for absorption of light in the range of 440-470 nm.
What is the maximum possible height above the Earth for the bottom of a thundercloud, which is at a potential 1.42 x 108 V below Earth's surface potential, if there is to be a lightning strike?
The traffic on the freeway is moving at a constant speed of 16.0 m/s. What distance does the traffic travel while the car is moving the length of the ramp.
How many ways there are to place three electrons into an f shell?what is the ground state term for thef3 configuration, and how many states areassociated with this term?
A scuba diver created a spherical bubble with a radium of 2.0cm at a depth of 30.0m where the total pressure (includingatmospheric pressure ) is 4.00 atm. What is the radius of the bubble when it re
As a result, each object experiences an electrostatic force that has a magnitude of 1.1375 x 10-21 N. How many electrons did it take to produce the charge on one of the objects?
If the initial velocity of a cannonball is 40m/s and the cannonball is launched at 72O above the horizontal, how much time does it take to reach the ground again? (In other words, what is t after th
A plate carries a charge of -2.6 µC, while a rod carries a charge of 2.4 µC. How many electrons must be transferred from the plate to the rod, so that both objects have the same charge?
A 0.5 cubic meter tank contains oxygen at 150 atm and 25oC. If oxygen may be assumed to behave as an ideal gas, how many kilograms of oxygen are there in the system?
Calculate the maximum force constant of the spring k_max that can be used in order to meet the design criteria.
A fuel gas containing methane and ethane is burned with air infurnace, producing a stack gas at 300C and 105kPa(absolute). Thestack gas contains C02 at a partial pressure of 80 mm Hg and no CO,O2, m
A 75.0-W lamp is placed in series with a resistor and a 120.0-V source. If the voltage across the lamp is 28 V, what is the resistance R of the resistor?
If we had not drawn te temperature graph to help determineout "real" highest temperature, would out specific heat have been higher or lower? Explain in few words.
A) When you do this, what distance will the bungee cord that you should select have stretched?
what was the dogs velocity relative to the bank from where the dog started?
In a test tube containing a precipitate of Pb(OH)2 in water, will the ions from the salt have a reasonable concentration? Explain. What are the concentrations of the lead(II) and hydroxide ions in e
A 0.50 mm-wide slit is illuminated by light of wavelength 500 nm. What is the width of the central maximum on a screen 2.0 m behind the slit?
Three point objects with net charge of Q1 = +78 µC, Q2 = +47 µC, and Q3 = -80 µC, respectively, are placed along a straight line. The object in the center, (with a charge of Q2), i
A student is examining a bacterium under the microscope. The E.coli bacterial cell has a mass of = 1.60 fg (where a femtogram, fg,is 10^-15 g) and is swimming at a velocity of v= 4.00 um/s, with anu
Two point charges have a total charge of 555 µC. When placed 1.30 m apart, the force each exerts on the other is 22.7 N and is repulsive. What is the charge on each? (Round your answers to the
A 15.5 mL sample of 0.215 M KOH soultion required 21.2 mL of aqueous acdic soultion in a titration experiment. Calculate the molarity of the acetic acid solution.
A +6.1 µC charge is placed at the origin and a -3.8 µC charge is placed at x = 25 cm. At what coordinates can a third charge be placed so that it experiences no net force?
For each of the following three questions 25.0 mL of 0.100 Mpyridine (Kb = 1.70 x 10-9) istitrated with 0.100 M HCl. For each question calculate the pH ofthe final solution after the indicated amoun