Calculate the energy in joules of a visible light -7 photon with a wavelength of 4.2 x 10 m. -34 Planck's constant is 6.63 x 10J.s.

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A: Gravitational Force of attraction F =Gm1m2r2

Q: Find the work done by a 25 N force applied for 8 meters. W-F x d

A: F = 25 N d = 8 m W = ?

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Q: 2. A ball is dropped from a height of 20 m above the ground. A) How much time does it take to reach…

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Q: 14. What is the resistance of a circuit with 125V and 30A? 15. What is the current in a 12V circuit…

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Q: A 25 N object is 3 meters up. How much potential energy does it have. (Hint, notice the units of the…

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Q: 1) A 2.5-kg bucket of water is attached to a 1.0-m rope. The bucket is swung in a circle with the…

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Q: 1) Take a moment to look at the items the simulator window is displaying (balloon, sweater, wall,…

A: Before After Charge on sweater 0 +ve charge Charge on Balloon 0 -ve charge

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Q: 3) Identify the force that provides the centripetal force keeping the object moving in a circular…

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Q: 9. is the total amount of kinetic energy and potential energy in a system.

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Q: Problem 3: A simple pendulum is made with a mass of 500 g and a massless string of length 50 cm. A…

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Q: 1. Which energy sources (input) can cause the turbine (wooden wheel) to spin and generate electrical…

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Q: 1. ALabybug was crawling in a circle around a flower like in the picture below. Sketch what think…

A: Vt – tengetial velocity Ac – acentripital accelartion

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Q: 7. Calculate the force of gravity between the Earth and Venus (mass = 4.9 x 1024 kg) when they are…

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Q: 1.F or Fw= 8 w 1. Kinetic A. Uses energy and can create energy; 2. v = 8 N Energy calculated by…

A: table A F = 8N v = 8 m/s p = 8 kg m/s h = 8m W or E = 8 J P = 8 watt

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Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.