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A photomicrograph was taken of a specimen at a magnification of 100X, and it was determined that the average number of grains per square inch was 200.
Explain the changes in the velocity, acceleration, and net force of a man with a parachute jumping off a plane. You need to describe the changes with valid scientific principles.
Compute the concentration of Li (in wt%) that is required. Assume that the respective densities of Li and Al are 0.534 and 2.71 g/cm3.
Given that the densities of C and Fe are 2.25 and 7.87 g/cm3, respectively, what is the concentration of carbon (in kg/m3) in the alloy?
(1) What is the wavelength of the second laser that would place its second maximum at the same location as the fourth minimum of the first laser, if d= 0.350mm ?
Gold forms a substitutional solid solution with silver. Calculate the number of gold atoms per cubic centimeter (in atoms/cm3) for a silver-gold alloy that contains 19.0 wt% Au and 81.0 wt% Ag.
Two lasers are shining on a double slit, with slit separation. Laser 1 has a wavelength of d/20 , whereas laser 2 has a wavelength of d/15. The lasers produce separate interference patterns on a sc
(a) Using the outward normal for each face of the cube, find the electric flux through each of the six faces. (Let the side of the cube in the x, z plane be the bottom of the cube, the side of the c
The spring constant is k=8 lb/in. and the tension in the cable is 3 lb. If the cable is cut, determine (a) the maximum displacement of the block, (b) the maximum speed of the block.
A small object, which has a charge q = 8.2 µC and mass m = 9.80 x10^-5 kg, is placed in a constant electric field. Starting from rest, the object accelerates to a speed of 2.08 x10^3 m/s in a
What is the average density of this solid solution? What is the average atomic weight? C) What is the volume of the unit cell in cm3? D) What is the unit cell dimension in cm?
Gold forms a substitutional solid solution with silver. Compute the weight percent of gold that must be added to silver to yield an alloy that contains 5.5 × 1021 Au atoms per cubic centimeter
Given the indices of refraction and of material 1 and material 2, respectively, rank these scenarios on the basis of the phase shift in the refracted ray. (n1 air=1.00 n2 water=1.33) (n1air=1.00 n2
How long does it take for a short pulse of light to travel from one end of the glass to the other? A beam of light from a monochromatic laser shines into a piece of glass.
Calculate the number of atoms per cubic meter in aluminum. The density and atomic weight of aluminum are 2.70 g/cm3 and 26.98 g/mol respectively.
You have three identical charged spheres, each with a charge of 3.70 µC. You have arranged them so they are each at the corners of a square that measures 3.2m on a side. Find the magnitude of
Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle, as the drawing shows. The magnitude of each of the
Niobium forms a substitutional solid solution with vanadium. Compute the number of niobium atoms per cubic centimeter for a niobium-vanadium alloy that contains 27 wt% Nb and 73 wt% V.
Water flows through a 4-cm pipe, wrought iron, horizontal pipeline 50-m long from point A to B, and contains a fully opened gate valve and two elbows (R/D = 4). If the pressure downstream at B is 19
Compute the number of gold atoms per cubic centimeter for a silver-gold alloy that contains 26 wt% Au and 74 wt% Ag. The densities of pure gold and silver are 19.32 and 10.49 g/cm3, respectively.
The concentration of silicon in an iron-silicon alloy is 0.55 wt%. What is the concentration in kilograms of silicon per cubic meter of alloy?
What is the difference in temperature between the inner and outer sufaces of the aluminum bottom of the pot? What is the change in entropy of the boiling water after boiling away 0.19 kg of water?
An even more efficient system is a geothermal air conditioner, where the heat pump runs between the inside temperature (27 C) and pipes which are buried underground below the frost line where the te
How many miles away was the lightning strike? (Assume the light takes essentially no time to reach you.)
A plate capacitor has a spacing between its plates of 5.0 mm and a potential difference of 3.0 *10^3 V across its plates. an electron is released from the negative plate. how fast is the electron tr