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A power boat of mass 500 kg is cruising at a constant speed of 8.9 m/s. The propeller provides a drive force of 765 N. The driver of the boat shuts off the engine, and the boat coasts to a halt. Assume -- contrary to fact -- that the resistive force due to the water is constant, independent of the boat's speed.
(a) How far does the boat coast? (b) How much time does it take for the boat to come to rest after the engine is turned off?
A beam of light of wavelength λ = 5000Å falling normally on a plane diffraction grating. The 1 st order spectrum is derived in a direction making an angle θ 1 with the norma
One mole of H 2 at 300 K takes a volume of 10 lits in a cylinder fitted with a piston. It is expanded isothermally to 20 lits. Consider ideal behavior for the gas, determine W, Q,
In mechanics, stress is a measure of the internal forces acting within a deformable body. Quantitatively, it is a measure of the average force per unit area of a surface within the
A helicopter is ascending vertically with a constant speed of 6 meters per second relative to the ground. At the immediate the helicopter is 60 meters above the ground it rele
A thin layer of an incompressible fluid flows steadily over a horizontal smooth plate as shown in the figure. The fluid surface is open to the atmosphere, and an obstruction having
can u tell me wats d QD which has excitation at in the 980nm range?
Q. Name the types of photoelectric cells? The photo electric cells are of three kinds: A) Photo emissive cell B) Photo voltaic cell and C) Photo conductive cell.
I want to measure H, not B The magnets in question are permanent magnets (large Neo or SmCo magnets), not coils =====================....Steel ____........................____ |.
Describe with the help of a labelled diagram the underlying principle and working of a step-up transformer. Why cannot such a device be used to step-up D.C. voltage? Or Dr
Superposition principle The general idea is that, while a number of influences are working on a system, the total influence on that system is just the sum of the individual in
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