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At a distance of 4,000 ft from the launch site, a spectator is observing a rocket being launched. If the rocket lifts off vertically and is rising at a speed of 600 ft/sec when it is at an altitude of 3,000 ft, how fast is the distance between the rocket and the spectator changing at that instant?Solution) Distance=s=√(40002+h2), rate of change of distance=ds/dt=(ds/dh)(dh/dt)=(d(√(40002+h2)/dh)(dh/dt),dh/dt=600 ft/sec
Pulmonary embolism: - It is a blood clot blocking a major artery in the lunge ,it represent a serious medical problem. - About 100 MBq of lumpy 99mTc –is injected into a vein .T
Distinguish between negative and positive crystal?
Define the Ray Diagrams for Lenses When drawing ray diagrams for thin lenses, we can assume that the lens is infinitely thin. Instead of considering refractions at each surface o
Determine range of V for obtaining a regulated voltage demonstrated in Figure. For the data 0 ≤ I L ≤ 4 mA 2 ≤ I Z ≤ 8 mA Ans: Determination of range of V for
Show any two applications of beats. What are "Echelon effects" and "Focusing"?
how to take readings from screw gauge and zero error of it
What is the principle of generating ultrasonic waves? The general principle comprised in generating ultrasonic waves is to reasons some dense material to vibrate very quickly.
The frequency of a wave is 50 Hertz and its wavelength is 25 meters. What is the velocity of this wave? Ans: The velocity of given wave is 1250 meters/second.
Given the properties in the table below a. Plot the engineering stress-strain curves for the 3 materials. You can assume the materials behave linearly when they plastically
What occures to Internal Energy of a system ,if work is done (a) on the system, (b) by the system.
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