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An electron has an initial velocity with an x component of zero, a y component of 9.35 km/s, a z component 16.1 km/s, and a constant acceleration of 1.60 x 1012 m/s2 in the positive x direction in a region in which uniform electric and magnetic fields are present. If the magnetic field has a magnitude of 428 µT and is in the positive x direction, find the
(a)x,
(b)y, and
(c)z components of the electric field. Give your answers in V/m
Calculate the required area of an air to air heat exchange to cool 20,000 cfm from 1200 F to 400 F. Assume ambient air at 80 F will be heated to 800 F by the exchange. Assume heat losses are 10 % and that the overall heat transfer coefficient is 1.0 ..
Use the Muskingum method to route a flood through a reach a river. The base flow is 100 cfs, and the incoming flood flow increases 50 cfs every 2 hr over a 6 hr period and the subsides at the same rate.
He is concerned about the high rolling resistance of the units in the sand (RR factor 250lb/ton). What is the rolling resistance?
Base course aggregate has a target dry density of 119.7 lb/cu ft in place. It will be laid down and compacted in a rectangular street repair area of 2000 ft*48ft*6in. the aggregate in the stockpile contains
the vertical portion of the press shown below consists of rectangle tube of wall thickness t=8mm. knowing that the press has been tightened on wooden planks being glues together until P = 20 kN,
Suppose that F1 ο G2 =F1ο G1 then F : S→ T, G1 : T → U, G2 :T →U,. Define a function F : R2 ? R2 by F(x, y) = (x +y, x - y). . Show that if F is onto, Suppose that G1ο F = G2 ο F.
An airplane with a Clark Y airfoil cross-section weighs 3500 lbs. The chord length is 6ft and the wingspan is 36 ft. Determine the: a) Minimum speed and power to take off, if the angle of attack is 12.4 degrees.
Write a program that processes a sequence of lines from a file, displaying a count of the total number of words in those lines as well as counts of words with one letter two letters,and so on.
Assume the collector provides this energy to a thermal storage unit (a thermal reservoir) at 220oC. A heat engine receives energy from this thermal storage unit and discharges energy by heat transfer to the surroundings at 20 C
Determine the critical load of a steel tube that is 5 m long and has a 100-mm outer diameter and a 16-mm wall thickness. Use E = 200 GPa.
An equal-tangent crest curve connects a +2% initial grade with a -1% final grade, and is designed for 55 mi/h. The station of the PVI is 233 + 40 with elevation 1203 ft.
explain how mechanical strength, melting temperature , and thermal exapntion are related at the atomic level. specifically, how do they relate to each other and the bonding energy between the atoms.
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