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Two equally charged particles are held 3.2*10^-3m apart and then released from rest. The initial acceleration of the first particle is observed to be 7m/s^2 and that of the second to be 9m/s^2. If t
Many common weak bases are derivatives of , where one or more of the hydrogen atoms have been replaced by another substituent. Such reactions can be generically symbolized as where is the base and i
A ball is thrown straight upward and rises to a maximum height of 12.0m above its launch point. At what height above its launch point has the speed of the mall decrease to one half of its initial va
A wire of mass 5.00 grams and length 1.20 m is stretched with a tension of 36.0 N. Waves of frequency 50.0 Hz and amplitude 1.6 mm are traveling along the wire. What is the average power carried by
Given pKa of dichloroacetic acid and trichloroacetic acid are 1.3 and .6. How many moles of trichloroacetic acid will be formed starting with 1.0 mole of dichloroacetic acid and 0.50 mole of the co
A wire, 4.0 m long, with a mass of 20 g, is under tension. A transverse wave is propagated on the wire, for which the frequency is 740 Hz, the wavelength is 0.70 m, and the amplitude is 6.7 mm. What
A transverse wave is propagated in a string stretched along the x-axis. The equation of the wave, in SI units, is given by: y = 0.006 cos π (46t - 12x). What is the frequency of the wave in SI un
If this energy were used to vaporize water at100 degrees Celcius, how much water in liters could be vaporized?(Assume that the density of water is 1.0 g/mL.) The heat of vaporization of water at 10
When we heat saturated calcium hydroxide, why must c are be taken so that the saturated calcium hydroxide solution does not boil orspit?
(a) at a distance of 2.00 m from the center of the sphere? (b) at the surface of the sphere? (c) at a distance of 25.0 cm from the center of the sphere? (Hint: use the shell theorem, which states th
On being heated in air, a mixture of FeO andFe2O4 picks up oxygen so as to convert completely to Fe2O3. If the observedweight gain is 5.00% of the initial weight, what must have been the composition
Explosives are used to blow a rock apart. The explosion blows the rock into three fragments. Two fragments go off at a 104 degree angle to each other--a 5.3 kg piece at 34.1 m/s and a 6.2 kg piece a
Copper in salt water near the dischargeof a sewage treatment plant is determined by first seperating andconcentrating it by solvent extraction of its dithizone chelate atpH 3 into a methylene chlori
what is the velocity vector of the twisted and mangled remains of the truck, which stuck together?
Consider a sample of a hydrocarbon (a compound consisting of onlycarbon and hydrogen) at 0.959 atm and 298K. Upon combusting the entire sample in oxygen, you collect a mixture of gaseous carbondioxi
Calculate the final velocity of the baseball: A tennis ball (57 g) is rolling at a velocity of 5 m/s north. It collides with a baseball (142 g) that is initially at rest. The tennis ball bounces off
A solid sphere rolls up an incline plane. What is the direction of the frictional force at the point of contact. Next, If the sphere rolls down the plane what is the direction of the force at the po
Satellite with an orbital period of exactly 24.0 h is always positioned over the same spot on Earth. This is known as a geosynchronous orbit. Television, communication, and weather satellites use ge
Hearing damage may occur when a person is exposed to a sound intensity level of 90.0 dB (relative to the threshold of hearing) for a period of 9.0 hours. One particular eardrum has an area of 2.0 &t
What is the total electron energy for Be, Be, and Be in thepresence of the Zeeman Effect. (Hint: You may use a symbol rather than numbers to express the energy of each interaction.)
A brick layer applies a force of 100 N to each of two handles of a wheelbarrow. Its mass is 20kg and it is loaded with 30 bricks,each of mass 1.5kg. The handles of the wheelbarrow are 30 degrees fro
What's the maximum speed the car can attain during this time? (The actual speed will be less, due to friction and other losses.)
A postulated mechanism for the reaction2N2O5 (g) →4NO2 (g) + O2 (g) consists of the following three steps.Assuming this is the correct mechanism what would the rate lawfor this reaction be?
Two charges of identical mass m, one with charge q, the other with charge 2q, hang from strings of length l from a common point. Assume q is sufficiently weak so that any angle is very small. Find a
Consider the following facts:water freezes spontaneously at -5C and 1 atm, and ice has a moreordered structure than liquid water Explain how a spontaneous process can lead to a decrease in the entr