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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 which point it expands and begins to form into crystals and expanding approximately 9 percent.
A block of mass m is tied to a cord of length L that is pivoted at the center of a frictionless table. A second block of mass m is tied to the ?rst block also on a cord of length L
A boy throws a ball of mass 20 kg vertically upwards.It raises to a maximum height of 100 m.At what height will the kinetic energy be reduced to 70%?
successive disintegration
What do you mean by Doppler effect? Derive a mathematical expression for the apparent frequency of a note, when source of sound and observer are approaching each other.
Applications of Superconductors - 1. Electrical Machines 2. Power Cables 3. Electro Magnets 4. Amplifiers 5. Cryotron 6. Magnetic Leviation 7. A 15 Phases
Define Eddy Currents ? If you try to pull a solid piece of some metals (good electrical conductors) quickly between the poles of a strong magnet, you will feel a force pushing
Two identical rods OA and OB each of similar length and mass are connected by a massless pin connection, which permits rotation.The system is placed on a horizontal surface.Two mas
Your friend has gifted an earphone set to you. While music is on you will try to oppose the two ear phone pieces to attract. Task-I: Will they repel? If yes, why so? Task-II: Why S
A rectangular rosette is mounted on a test structure as shown, loads are applied, and the following strains are measured by strain gage elements 1, 2, and 3: ε 1 = 1500 μm/ m ε
barry had a pet dragon
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