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A hydraulic press consists of two vertical cylinders of circular cross-sectional areas 6cm2 and 120cm2 that are joined at the base. The press contains oil of relative density 0.93, and the friction b
Calculate the approximate alkalinity (milligrams per literCaCO3) for water containing 120 mg/L of bicarbonate ionand 15 mg/L of carbonate ion.
A point charge of -1.5 C is located at the origin. A second point charge of 10 C is at x = 1 m, y = 0.5 m. Find the x and y coordinates of the position at which an electron would be in equilibrium.
In the Hall-Heroult process, anhydrous aluminum oxide isreduced to aluminum according to the chemical equation: 2Al2O3 (s) ---> 4 Al (l) + 3 O2(g) Calculate the mass of aluminum oxide reacted if
A proton is located at the origin, and a second proton is located on the x-axis at x = 5.38 fm (1 fm = 10-15 m). (a) Calculate the electric potential energy associated with this configuration.
How exactly do you name a pyrrole because I've been attempting ahomework assignment and one of the structures is a pyrrole, but thename is incorrect.
A student measures the melting point of benzil and reports themelting point in the lab notebook as 95C. Explain what the student did wrong.
A ski gondola is connected to the top of a hill by a steel cable of length 620 M and diameter 1.5 cm. as the gondola comes to the end of its run it bumps into the terminal and sends a wave along the
Solid lithium metal reacts with water,giving a solution of lithium hydroxide andreleasing hydrogen gas. Write a balanced equation for the reactionusing complete formulas for the compounds with phase
Two positive point charges are held in place, 0.60 m apart. They are then moved so that their electric potential energy doubles. What is the new separation between the charges?
A sample is marked as containing 42.7% calcium carbonate by mass.What mass of calcium carbonate is contained in 33.9 grams of the sample?
What is the change in the gravitational potential energy of the snowball-Earth system during the flight?
A 0.4400-g sample of impure Ca(OH)2 is dissolved inenough water to make 43.90 mL of solution. 20.00 mL of theresulting solution is then titrated with 0.2554-M HCl.
If the ball is in contact with the wall for 0.0122 s, what is the average magnitude of acceleration of the ball while it is in contact with the wall?
2 mL of heptane plu 2 mL of alpha pinene give 4 mL of solution. Howmany grams per mL are in that mixture? Suppose you diluted 0.25 mLof the 50:50 heptane/alpha-pinene mixture to 5 mL with solvent an
What if both are heated together, what temperature must they both reach so that the ring just slips over the rod? Would this latter process work? [coefficient of linear exp for alum is 2.4 e-5, for
A 40-year-old manager, at a prominent legalfirm in L.A., experiences abdominal pain post lunch. He goes to therestroom a couple of times, but continues to experience pain andcramps.
The amplitude decreases to 1.087 cm in 4.57 s, what is the damping constant for the system?
A hiker caught in a thunderstorm loses heat when her clothingbecomes wet. She is packing emergency rations which if completelymetabolized will release 30kJ of heat per gram of rations consumed.
A uniform circular disk whose radius R is 50.5 cm is suspended from a point on its rim. At what radial distance r < R is there a point of suspension that gives the same period?
A large solar panel on a spacecraft in Earth orbit produce 1.0kW of power when the panel is turned toward the sun. What power would the solar cell produce if the spacecraft were in orbit around Satu
Many gases are shipped in high pressure containers. Consider asteel tank whos volume is 65L and which contains O2 gas at apressure of 16,500 KPa at 23 degrees celcius.
A bomber on a bomb run is traveling at a horizontal velocity of 152 meters per second, and flying at an altitude of 1500 m. Find the time the bomb will take to fall.
The ratio of the velocity of the object, at a very large distance from the planet, to the escape velocity for the planet is closest to:
Your stomach is a chemical reactor. When you consumea fast food $0.99 hamburger in about a minute, it acts like aninstantaneous input of 325 g of food entering the stomach.