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The ocean of the world covers three-quarters of the earth's surface and have an average depth of 3.8 km. how much would sea -level rise if one assumes that the surface area of the oceans does not incr
Calculate the pH of 0.10 M KOH where KOH is a strong base. The answer should be above 7 since its a BASE.
How is sound produced? Key words: Transverse, Longtitudinal, particles. How are standing waves set up in the instruments? Key words: incident, reflected, interference, wavelength, string/pipe length
you are conducting an osmosis experiment with a semi-permeable dialysis membrane of fixed pore size. how much bigger are the pores in the membrane
A system has 1000 joules of energy added to it and performs 800 joules of work. Calculate the change in internal energy
Gravity affects any object that has mass. Does gravity affect light rays? What effect does the sun have on the light beam
Two point charges are located on the x axis. The First is a charge +Q at x = -a. The second is an unknown charge located at x = +3a. What are the two possible values of the unknown charge
A bridge is constructed of a material that is known to expand 0.1 cm for eeach meter in length when subjected to a temperature increase of 10 C. How much wil the bridge have expanded
A 27.0 gram sample of an unknown hydrocarbon is burned in exess oxygen to form 88.0 grams of carbon dioxide and 27.0 grams of water. What is a possible molecular formula of the hydrocarbon
A proton in the upper atmosphere moves at 8.8×105 m/s , perpendicular to Earth's magnetic field, Find the curvature radius of the proton's trajectory
What type of orbital is used to form the pi-bond in C2H4: H2C=CH2 Question 12 options: sp3 sp2 sp p
Discuss methods for assessing problem solving ability and progress using the Common Core State Standards. Indicate at the beginning of the paper which of these topic(s) you are addressing. Do not in
An electron enters a magnetic field of .75 T with a velocity perpendicular to the direction of the filed. At what frequency does the electron traverse a circula path
A closed and elevated vertical cylindrical tank with diameter 1.70 m contains water to a depth of 0.800 m. How much time does it take for all the water to drain from the tank
A uniform electric field of 1.0 N/C is set up by a uniform distribution of charge in the xy-plane. What is the electric field inside a metal ball
If 58.3 grams of a 14% (m/m) solution of NaOH were boiled to dryness, how much NaOH would remain? If the recovered NaOH (from part a) were re-dissolved in 1.22kg of water, what would the resulting
A ray of light traveling through air encounters a 1.4 cm-thick sheet of glass at a 38 degree angle of incidence. How far does the light ray travel inside the glass
A 1.0-cm-tall object is 60 cm in front of a diverging lens that has a -30 cm focal length. Calculate the image position and the image height
If 2.20 L of a gas at 754 torr and 580 mL of gas at 0.988 atm are combined and allowed to diffuse in a 6.00L container, what is the total pressure of the new system?
a buffer is made using 45.0 of 0.750 M propanoic acid (Ka=1.3x10^-5) and 55.0 ml of 0.700 sodium propanoate. what is the pH of the buffer. what is the pH after 4.91 ml of 1.00 M sodium hydroxide is
The angle of reflection of a reflected ray is 75º. what is the angle formed by the incident ray and the reflected ray?
A uniform ladder 10.0 m long is leaning against a frictionless wall at an angle of 60.0° above the horizontal. find the magnitude of the frictional force exerted on the ladder by the floor
write the neutralization reaction. b)what is the pH at the neutralization point? c)what is the concentration of the hydrochloric acid solution?
Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. Determine the induced emf within a circle of tissue of radius 2.0 mm and that is perpen
If 2.20 L ofa gas at 754 torr and 580 mL of gas at 0.988 atm are combined and allowed to diffuse in a 6.00L container, what is the total pressure of the new system?