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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
A 400V, 3-phase star linked alternator supplies a delta-connected load, each phase of which has a resistance of 30 and inductive reactance 40. Calculate (a) the current sup
Ca has atomic no. 20 and atomic weight 40. Which of the following statements is not correct about Ca atom: (1)The number of electrons is same as the number of neutrons (2)
1. What is the difference between finite elements, finite difference, and finite volume? 2. What is stability, consistency, and convergence of a difference equation? 3. What
Uses of Ultrasonics: 1. Ultrasonic are used in diagnosis of disease, physical therapy as surgical tool & industry. 2. They are used in sounding devices to calculate the dept
Question Put the different types of light in order from lowest frequency to highest frequency. Feedback: These are all instances of electromagnetic radiation. Elect
Determine the compression force exerted on the can for an applied force of P46 N applied at D at the angle P47 to the vertical as shown. There are two links for AB and two linkage
The natural angular frequency of a S.H.O. of mass 2gm is 0.8rad/sec. It undergoes critically damped motion when taken to a viscous medium. Evaluate the damping force on the oscilla
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
Who makes fiber optics? Glass manufacturers mostly make Glass fibers. Mainly chemical companies fabricate PMMA fibers. Companies, both private and public, manufacture other kin
If Young' two slit interference experiment is done with white light what could be seen?
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