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A popular toy on the market some years ago was the water rocket. Water (at 10°C) was loaded into a plastic rocket and pressurized with a hand pump. The rocket was released and would travel a considerable distance in the air. Assume that a water rocket has mass of 50 g and is charged with 100 g of water. The pressure inside the rocket is 100 kPa gage. The exit area is one-tenth of the chamber cross-sectional area The inside diameter of the rocket is 5 cm. Assume that Bernoulli equation is valid for the water flow inside the rocket. Neglecting air friction, calculate the maximum velocity the rocket will attain.
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Illustrates the quantum theory of black body radiation by Planck? Planck’s quantum theory of black body radiation Planck was investigating the properties of light-emitting a
Q. State the law of conservation of electric charges? The entirety charge in an isolated system always remains constant. For instance Uranium ( 92 U 238 ) can decay by emittin
two balls connected by massless string wherein the first ball A is confined to a plane surface with frection and the second ball B, due to the string’s passage through a small hol
A cab driver in a hurry is sitting at a red light. When the light turns green she rapidly accelerates for 3.50 s at 6.80 m/s 2 . The next light is still red. She then slams on
1. Discuss the internal noise sources that are present in a typical signal source and amplifier circuit, and describe their effects. 2. The company currently has a low noise a
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Can multiple illuminators change colors simultaneously? Yes. Usually the standard disc rotating motors are of the synchronous form, very reliable, and geared to the most suffi
A rocket is intended to leave the Earth's gravitational ?eld. The fuel in its key engine is a little less than the amount that is essential, and an auxiliary engine, only capa
(i) It has of continuously varying wavelengths in a exact wavelength range. (ii) It is given by solids, liquids and highly compressed gases heated to high temperature. (iii)
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