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Gasoline contains predominately octane (the "octane" value quoted on the pump is approximately equal to the percent of octane in the gasoline). Octane has an autoignition temperature of 417 degree C. In the isentropic compression portion of the Otto cycle, the point is to get the air-fuel mixture hot without exceeding the autoignition temperature for the fuel. Estimate the upper limit on the compression ratio in this cycle such that the autoingition temperature is not exceeded in state 2 (just prior to spark ignition). You may assume the incoming air-fuel mixture is an ideal gas that has a gamma value of 1.4 (constant) and a temperature of 25 degree C.
Determine the plate scale and field-of-view for the 8192x8192 pixel MOSAIC imaging camera on the 4-m Mayall Telescope at Kitt Peak Observatory. MOSAIC is a prime focus instrument (f/2.95) and has 15µm pixels
q1. the potential at location a is 419 v. a positively charged particle is released there from rest and arrives at
A rabbit runs in a garden such that the x- and y- components of its displacement as function of times are given by x(t) = -0.45 t2 - 6.5 t + 23.3 and y(t) = 0.35 t2 + 8.3 t + 49.9
A 1.0 mCi source of Phosphorus called P-32, a beta emitter, is imlanted in a tumor where it is to administer 36 Gy. The half-life is 14.3 days and 1 mCi delivers about 10 mGy/min/ Approximately how long should the source remain implanted?
A car with mass of 1000.0 kg accelerates from 0 m/s to 40.0 m/s in 11.0 s. Ignore air resistance. obtain the average mechanical power output of the engine
A person is nearsighted and can clearly focus on objects that are no farther than 2.6 m away from her eyes. What is the focal length of the borrowed glasses
unpolarized light with an intensity Io=16 W/m2 is incident on a pair of polarizers. what is the intensity of light transmitted through the first and second polarizer
The angle of incidence of a light beam in air onto a reflecting surface is continuously variable. find the index of refraction of the reflecting material
What is the frequency of the note played by this pipe.
A 575 N woman climbs a staircase that rises at 54 degrees above the horizontal and is 4.10 m long. How much work has gravity done on her as she climbed the stairs
An underwater diver sees the sun 58{rm ^circ} above horizontal. How high is the sun above the horizon to a fisherman in the boat above the diver.
Two liquids, A and B, are mixed together, and the resulting temp is 22C. If liquid A has mass m and was initially at temp 35C, and liquid B has mass 3m and was initially at temp 11C, cacluatle the ratio of the specific heats of..
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