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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 car tyre is pumped up to 230 kPa. What is the volume of air at atmospheric pressure (100kPa) that must be pumped into a tyre that has a volume of 0.1 cubic meter?
determine the magnitude of Poynting vector end the energy per unit time delivered to a wire of length land cross section A when electric current I flow in it
find the dimensions of the following i.power ii.velocity iii.force
The birghtness of objects past Neptune actually varies approximately as 1/d^4. Why is that the case?
calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h?
A block initial located 3m up a frictionless inclined plane is given an initial velocity of 6m/s up the ramp. The plane is 10m long and titled by 30 degree. a) How long does it tak
Que: In the circumstances of charge distributed on a line segment what do we mean by the expression linear charge density λ(x)? Note that λ(x) is to be study lambda of x mea
MOMENTUM OR LINEAR MOMENTUM. It is described as "The product of mass and velocity of the body". OR "The quantity of linear motion of a bod
In Rutherford's experiment including the deflection of alpha particles by atomic nuclei, the fact that some of the alpha particles bombarding the thin gold foil were back-scattered
It determines the probability of an electron occupying a state at an energy level E. This takes into account that a collection of electron must obey the Pauli Exclusion Principle.
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