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Consider the point (x, (x^2/4L)), where x is very large. Find approximate expressions for the speed and impact parameter at this point.
When the system reaches equilibrium, a potential differenceof 82.9 mV is measured between the inside and the outside of thecell, where the inside has the higher (more positive) potential.
Consider a solvent whose molecular weight is 100.0 amu and whosevapor pressure at 25°C is 25.00 mm Hg. 100.0 g of a solutewhose molecular weight is 50.00 amu is dissolved in 1.000 kg ofthat solv
On Aug. 6th1945 the United States bombedthe Japanese City of Hiroshima with a 235Uranium based bomb killingsome 140,000 people. It contained 64 kg of uranium (assume ofpure 235U)
Suppose that the charge were all pushed away from the center and distributed uniformly on the outer rim of the disk. Find the magnitude of the electric field at point .
Which two packaging plastics should show IR absorptions due toa benzene ring, and which one is the addition polymer,and which one is the condensation polymer?
At a place on earth whcre thc local acceleration of gravity is 9.81 m s-2. thc spring cxtcnds 1.08 cm. Whcn the instnnTIcnt packagc is landed on Mars. it radios the information that the spring is ex
A 3 cubic meter tank contains 1.5 kg of a gas at 27oC and avacuum pressure of 81 kPa. What is the density and specificvolume of this gas?
Which of the packaging plastics contain oxygen double bonded to a carbon atom, and what characteristic infrared absorption will this plastic display?
What is the force between the two alpha particles when they are 6.40 x 10-15 m apart and what is the initial magnitude of the acceleration of the alpha particles due to this force? Note that the mass
Draw the Lewis Dot Structures for ammonia and for the ammonium ion. Write the net ionic equation for the conversion of ammonia to ammonium ion in water. Explain how this is an example of acid-base
A 1.00 kg object is attached to a horizontal spring. The spring is initially stretched by 0.500 m, and the object is released from rest there. It proceeds to move without friction. The next time the
The specific heat capacity of liquid mercury is 0.14J/g-K. How many joules of heat are needed to raise the temperature of 5.00 gmercury from 15 ºC to 36.5 ºC?
Using a rope, a child holds a sled at rest on a 30.0 degree inclined frictionless, snow-covered hill. A) if the sled weighs 77.0 N, find the force exerted by the rope.
A certain element has three isotopes. The isotopic masses (amu) and abundances in ( ) are: 159.37 (30.60%), 162.79 (15.79%), and 163.92 (53.61%).
The photograph in the figure below is a short-time exposure (1/31 s) of a juggler with two tennis balls in the air. (Take the diameter of the tennis ball to be 6.5 cm. (a) The tennis ball near the t
A peroxidase enzyme isolated from human red blood cells was found to contain 0.29% selenium. What is the minimum molar mass of the enzyme?
The mass of an atom oscillating at a frequency of 8.6 x 1011Hz in its lattice is 1.2 x 10-26 kg. If the amplitude of its oscillations is 0.045nm, find (a) its total energy in joules and eV, (b) its
A small amount of the solid MgSO4 * 7H2O is put in a crucible. The solid is gently heated by a bunsen burner until all the waters of hydration are driven off.
The equation of oscillation of a mass-spring system is x(t) = 0.3cos(4t - 0.7) where x is in meters and t in seconds. The spring constant is 15N/m.
What amount of solid NaOH must be added to 1.0 L of a .15 M H2CO3 solution to produce a solution with [H+] = 3.5x10^-11 M? There is no significant volume change as a result of the addition of the s
A mass attached to a spring oscillates according to the equation: x(t) = 24sin(16t + 0.50) where x is in cm and t in seconds. Find (a) the velocity and acceleration of the mass when x = 6.0cm for th
Use the laws of classical mechanics to solve this problem. An atom of mass m moves in positive x direction with speed v. It collides with and sticks to an atom of mass n * m moving in positive y direc
A buffer is made up of 355 mL each of 0.200 M NaHCO3 and0.134 M Na2CO3. Enough water is added to thebuffer to make the total volume 10.0 L. Calculate the pH of the buffer after the addition of 0.030
A sample oxygen is collected over water and has a volume of7.84 ml. The pressure od the collected "wet" gas is 71.8 KPa andthe temperature is 20°C.