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At what temperature would the average speed of helium atoms equal (a)the escape speed from Earth, 1.12 ´ 104 m/s, and (b) the escape speed from the Moon, 2.37´ 103 m/s? (See Chapter 13for a discussion of escape speed, and note that the mass of a helium atom is 6.64 ´ 10-27 kg.)
Q. Why does heat makes matter to expand? Answer:- Water contracts as it cools similar to all other liquids until it reaches a temperature of about 4 degrees Celsius at whi
The topic for the project is to design an Automotive Cruise Control System although you may choose a different title for your report. The aim is to research cruise control systems
If the material is in the crystalline form, how will the susceptibility be affected?
Explain the Energy and Mass Albert Einstein described an intricate relationship between matter and energy. It is summarized in the famous formula: E = mc 2 In this equ
Q. Illustrate what are the characteristics of dead stars? Answer:- Dead stars are typically cold balls of material in empty space. A teaspoonful of white dwarf substance w
a jet of engine on a test tube takes in 20kg of air per second at a velocity of 100m/s and burns 0.8kg of fuel per second.after compression and heating the exhaut gases are ejected
What do you understand by reverberation time an auditorium What do you mean by sound absorber. Give two examples for good absorbers.
what is turning force and moment force ?
Two trains simultaneously leave the same train station at noon. One train travels north and the other travels south. The position-time graph or both trains is shown in the accompan
The work done by a friction force is: a) Always positive b) Always negative c) Always zero d) Either positive or negative depending upon the situation. An
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