Wednesday
December 7, 2016

Posts by Hadi

Total # Posts: 11

chem
What is the density of an aqueous solution of potassium nitrate, that has a normal boiling point of 103.0 degrees Celsius, and an osmotic pressure of 122 at 25 degrees Celsius?
December 14, 2015

geometry
A square ABCD is inscribed in a circle. The circle is folded to form a semi-sircle, and another square EFGH is inscribed in this semi-cirlcle. Find the ratio of the area of the square EFGH to the area of the square ABCD.
March 30, 2012

Chemistry
column of water in the water barometer rose to a height of 33 feet, what would the atmospheric pressure be in mm Hg? mm Hg
October 21, 2008

Physics
A toy of mass 0.151 kg is undergoing SHM on the end of a horizontal spring with force constant k = 301 N/m . When the object is a distance 1.23×10^−2 m from its equilibrium position, it is observed to have a speed of 0.297 m/s. A-What is the total energy of the ...
January 2, 2007

Physics
frictionless block of mass 1.65 kg is attached to an ideal spring with force constant 340 N/m . At t=0 the spring is neither stretched nor compressed and the block is moving in the negative direction at a speed of 12.7 m/s . A-Find the amplitude. B-Find the phase angle.
January 2, 2007

Physics
A body of unknown mass is attached to an ideal spring with force constant 113 N/m . It is found to vibrate with a frequency of 5.80 Hz . A-Find the period. B-Find the angular frequency. C-Find the mass of the body.
January 2, 2007

Physics
If an object on a horizontal frictionless surface is attached to a spring, displaced, and then released, it will oscillate. If it is displaced a distance 0.130 m from its equilibrium position and released with zero initial speed. Then after a time 0.803 s its displacement is ...
January 2, 2007

physics
Apparent Weight. A physics student weighing 600 N stands on a bathroom scale in an elevator. As the elevator starts moving, the scale reads 420 N . A )Find the magnitude of the acceleration of the elevator. B ) Find the direction of the acceleration of the elevator.( up or ...
November 14, 2006

Physics
A loaded elevator with very worn cables has a total mass of 2600 Kg , and the cables can withstand a maximum tension of 2.90×104 N . A) Apply Newton's second law to the elevator and find the maximum upward acceleration for the elevator if the cables are not to break...
November 9, 2006

Economics
Determine whether each of the following, other things held constant, would lead to an increase, a decrease, or no change in long-run aggregate supply: a. An improvement in technology b. A permanent decrease in the size of the capital stock c. An increase in the actual price ...
September 27, 2006

Macroeconomics
Suppose the marginal propensity to consume is 0.75. What does this mean? What do we know about the marginal propensity to save? What do we know about the average propensity to consume? The marginal propensity to consume (MPS) the percent of an additional amount of income that ...
September 20, 2006

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