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A 1.7m -long barbell has a 21kg weight on its left end and a 32kg weight on its right end. What is the torque due to gravity about the left end of the bar
Any help on how to do or start this problem. Calculate the change in pH of rainwater resulting from an increase in the P of CO2 from 10^-3.5 atm to 10^-3.0 atm due to fossil fuel emissions.
A fuel gas containing 75% methane, 15% ethane and 10% propane by volume flows to a furnace at a rate of 1200m^3/hr at 15'C and 200kPa, where it is burned with 12% excess air. Calculate the required
What concentration of Fe^3+ is needed to maintain the phosphate concentration below the limit of 1 mg P/L? Any help on how to do or even start the problem would be great.
Suppose you were given a pure stereoisomer that rotated the ppl either +60 degrees of -120 degrees ie. the same intensity of yellow light is observed for both of these readings. What would you do to
A figure skater is spinning at a rate of 1.2 rev/s with her arms outstretched. What is her new rate of rotation
A weather vane initially at rest has a moment of inertia of 0.116 kg · m2 about its axis of rotation. Find the angular velocity of the weather vane just after it is struck
The average density of the planet Pluto is 2357 kg/m3. The acceleration of gravity on its surface is 0.76 m/s2. Calculate the average radius of Pluto
A rod of length L and charge Q is placed right next to another identical rod with charge -Q. What is the direction of the electric field at point P on the +y axis
What volume will 1.5 atm gas sample of Methane occupy at 120 C? What volume will 1.5 atm gas sample of Butane occupy at 120 C
A 1.43 kg object is held 1.28 m above a relaxed, massless vertical spring with a force constant of 318 N/m. The object is dropped onto the spring. How far does the object compress the spring
Which country has the most acidified lakes in the world and how many are currently acidified - Ask a question about acid deposition, photochemical smog, the global climate impact
A crate is dragged 4.0m along a rough floor with a constant velocity by a worker applying a force of 450N to a rope at an angle of 30? to the horizontal. What is the total work done on the crate
The reaction is spontaneous at all temperatures C) It is impossible to determine if the reaction is spontaneous without calculations D) The reaction will only be spontaneous at low temperatures E) T
1) What volume (mL) of Hydrogen gas, saturated with water vapor, will be obtained from a 0.1138g sample of alloy which is 73.2 percent Al? (Pbar=754.3 torr, T=21.2deg C) Show your work. 2) What volu
You are given a pendulum composed of a 0.024 kg mass on the end of a 0.60 m long massless string. Find the gravitational potential energy of the mass
Using the isothermal transformation diagram for an iron-carbon alloy of eutectoid composition, specify the nature of the final microstructure (in terms of microconstituents present and approximate p
A steel is heated until 85% austenite, with a carbon content of 1.05%, forms. Estimate the temperature and the overall carbon content of the steel.
A steel contains 18% cementite and 82% ferrite at room temperature. Estimate the carbon content of the steel. Is the steel hypoeutectoid or hypereutectoid
Cellular respiration Cellular respiration
The composition and amount of each phase present at 726°C, and (e) the composition and amount of each micro constituent present at 726°C.
Spontaneous reactions always have Delta Sr > 0 E) A Thermodynamically stable compound is a compound with a negative standard free energy of formation
A ray of light traveling through air encounters a 1.7cm -thick sheet of glass at a 42? angle of incidence. Assume n = 1.5. How far does the light ray travel inside the glass
A 1-cm-thick layer of water stands on a horizontal slab of glass. A light ray in the air is incident on the water 64? from the normal. what is the ray's angle from the normal
42 kg of graphite is added to 1 metric ton of iron and the mixture is heated to 1300 then slowly cooled to room temperature. Calculate the mass of each microstructure and the mass and composition of