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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
My question is that if voltage is increased, the electrons will move faster and the distance between them is changed. Why?
Water flows from a large tank through a large pipe that splits into two smaller pipes as shown in Figure. If viscous effects are negligible (no head loss), determine the volume flo
What is the Directionality of LASER? Directionality: Laser emits light which is highly directional. Laser light is emitted like a relatively narrow beam in an exact direction.
A plane polarized monochromatic light of wave length 5893Å is incident perpendicularly on a quarter wave plate to produce elliptically polarized light. If the refrac
The symmetrical scissors truss shown below is supported at point A and D. The support at D is a rocker bearing and does not produce a horizontal reaction. A, B, C, D, E & F are pi
calculate the distance a car travelled if its displacement was 50km and the distance it moved north was 40km.assuming it moved westward?
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Mechanical energy E of particle, system or object is explained as the sum of kinetic energy K and potential energy U, i.e. E = K + U. It is a scalar quantity having dimensions [ML
It is the energy possessed by a body because of the interactive forces inside the object. This may be defined as the work done in assembling all the particles of a body in a exact
yes.fricton is working always opposite to the motion
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