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a force of 25N acts on a body.if moment arm is 2m.find the value of torque
Q. What are secondary cells? Give an example? i) They are rechargeable. ii) The chemical reactions which take place in secondary cells are reversible. iii) The active mat
Question: The resistance-per-length of the wire is wire's resistivity. Answer: Resistivity has units of ohms per meter therefore as regards wire it is certainly natur
A well-insulated electric water heater warms 109 kg of water from 20.0°C to 49.0°C in 25.0 min. Find the resistance of its heating element, which is connected across a 240-V potent
Loschmidt constant; Loschmidt number; NL: The number of particles per unit volume of an ideal gas at standard temperature & pressure. It has the value 2.687 19 x 10 25 m -3 .
Resistance: Resistance is the opposition to the motion of electrons. This arises as a result of collision of moving electrons. The unit of resistance is "ohm" represented by
Faraday's laws of electrolysis (M. Faraday) Faraday's first law of electrolysis At time of electrolysis the amount of chemical change is proportion
Artificial satellites 1. Satellites help to develop reliable communication links between different countries separated by large distances on the globe. The communications inclu
An atom which has lost one electron would be: (1) Negatively charged () Positively charged (3) Electrically neutral (4) Carry double positive charge Ans: Elec
How can Newton rings experiment be used to determine refractive index of liquid? The experimental arrangement for Newton's rings set up is made with the plane convex lens pla
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