Graph between frequency of photon and velocity of photo electron?

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Is the electric field constant or does it vary with time in dielectric materials?

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A solar collection has been installed to heat water. A large water tank has a volume of 5.0 x 105 cm3. The area of the solar collectors is 8m2. (2 meters by 3 meters). If the water in the tank starts out with a temperature of 30°C in the morning, what is its temperature in the evening after the sun has set?

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What is Amalgam ?

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What is Solar Energy?

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what is newton first formula

3 Answers   RRB,

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Explain the refraction of light ?

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is the below statement correct. the force of attraction of earth on a man, who is inside the artificial satellite is zero

2 Answers  

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The magnitude of electrostatic force between two identical positive ions that are separated by a distance of 5.0 x 10– 10 m is 3.7 x 10–9 N. (a) What is the charge of each ion? (b) How many electrons are “missing” from each ion?

2 Answers   College School Exams Tests, DELL, Sony,

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Why a capacitor is a voltage sensitive device?

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I have energy of (220V*1A=)220W. I want to convert it into (12V*15A=)180W. Is this possible? If yes, then how?

4 Answers  

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What is the Condensation ?

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