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The gas in a cylinder at 20.0 oC exerts a pressure of 200 atm. The cylinder is heated to a temperature of 200 oC. To what value will the pressure rise assuming the cylinder volume does not chan
What is the molarity of an HNO3 solution, if 24.1 mL of a 0.250M Ba(OH)2 solution are necessary to titrate a 15.0mL sample of the acid.
Calculate the number of protons, neutrons and mass number of the radio isotope.
find out the mass of tetraphosphorus decoxide formed if 25.0 g of phosphorus P4 and 50.0 g of oxygen are combined.
Determine the limiting reactant, excess reactant, mass of the product, and the mass of the excess reactant.The reaction between solid sodium and Iron (III) oxide is one in a series of reactions that i
Photosynthesis reactions in green plants utilize carbon dioxide and water to produce glucose (C6H12O6) and oxygen. Write down the balanced chemical equation for the reaction. If a plant has 88 g c
For a sample with the standard deviation of 10, a score of X = 44 corresponds to a z-score of 0.50. Based on this info, what is the sample mean.
What is random sampling and why is it so essential? Please address both parts of this question.
Cold fusion in brief hailed as the silver-bullet solution to the world's energy problems and since discarded to the same bin of quackery as paranormal phenomena and perpetual motion machines would s
Astronomers discover a binary star system that has a period of 93 days. The binary star system consists of two equal-mass stars, each with the mass twice that of the sun, that rotate like a dumbbell
A spring with spring constant 18N/m hangs from the ceiling. A 580g ball is attached to the spring and allowed to come to rest. It is after that pulled down 8 cm and released.
Three single-phase step-up transformers rated at 10MVA, 4.6kV/13.8kV are connected in Wye-Delta configuration. The three transformers are used to feed a 20MVA load at 0.9 p.f. With an efficiency of
Draw per-phase equivalent circuit of the power system showing all reactances in per unit and show the base voltages used at various parts of the network. Use 10 MVA and 12 kV as base
A three-phase transmission line is 200 km long. It has a total series impedance of ( 25 + j110) Ω per phase and a total shunt admittance of j5 X 10-4 Ω-1. It delivers 18
Air at 1 ATM and 80 °C is fed to a chiller. The air contains water vapor at 15 degrees of superheat. The air stream is chilled to condense 50 percent of the water in the feed.
Two matching speakers are driven by the same oscillator at 200Hz. They are located on a vertical pole and 4.00 m apart. A man walks straight towards the lower speaker perpendicular to the pole.
A rectangular strain gage rosette attached to an aluminum surface comprises 3 identical gages (gage factor = 2.1) of nominal resistance 200 ohms are associated into a Wheatstone bridge having 3 othe
A 0.30 m radius automobile tire accelerates from rest at a constant 2.0 rad/s2. What is the centripetal acceleration of a point on the outer edge of the tire after 5s.
A horizontal force of 200N is applied to a 55 kg cart across a 10 m level surface. If the cart accelerates at 2.0 m/s2, then what is the work completed by the force of friction as it acts to retard
Find out the tension in an elevator cable if the 1 .000 kg elevators is descending with an acceleration of 1.8 m/s2, downward.
Find acceleration of the moving point. A point moves along x-axis with its position, x, at time t given by x(t) = t3 - 3t2 + 2t - 1.
An object at rest explodes into three pieces of equal masses. one moves east at 23 m/s, while the second piece moves northwest at 14 m/s. What is the velocity of the third piece.
A bird, accelerating from rest at a constant rate, experiences the displacement of 28 m in 11 s. What is an average velocity.
A spherical Balloon is inflated at the rate of 144pie cubic inches per minute (in^3/min). How fast is the radius of the balloon changing when the radius is 4 inches? Recall the formula for volume of
A 60.0 kg skater begins a spin with the angular speed of 6.00 rad/s. By changing the position of her arms, the skater decreases her moment of inertia by 50%. What is the skater's final angular speed