Proove the follow commutators: (a) [L,x] = ihy (b) [L„,Þy] = -ihpx %3D

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Q: Problem 3. Acceleration due to gravity. The distance covered by a body dropped from a height d with ...

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Q: What factors do you think may cause the experimental value (9.799m/s²) to be different from the acce...

A: What factors do you think may cause the experimental value (9.799m/s²) to be different from the acce...

Q: A gracing car unifortm what distonce, will .it coverin 19 secondo oftesithe t0gr ha d aceelestation ...

A: Acceleration (a) = 10 ms2Initial velocity (u) = 0 mstime (t) = 12 seconds   

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Q: Given this equation a= 4-6t. a. Find the velocity equation at v=2m/s and t=1s b. Find displacement e...

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Q: Two electrons are initially separated by 5.0 X 10^-8 m. When they are both released, they fly apart....

A: distance (d) = 5×10-8 m charge (q) = -1.6×10-19 C 

Q: Q12: In a collinear collision, a particle with an initial speed V, strikes a stationary particle of ...

A: Apply the momentum conservation equation.

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A: Newtons first law of motion : Newton’s first law states that if a body is at rest or moving at a con...

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Q: A 1500-kg car goes around a flat 25-m-radius circular track at 10 m/s (approximately 22 mph). What i...

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Q: A student sets up a Fletcher’s Trolley, where Block 1, on the table, has a mass of 0.450 kg and Bloc...

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Q: Fill in the blanks with the terms “greater than”, “less than”, or “equal to” to outline how the norm...

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Q: Problem 5: An electric current of I= 0.55 A flows through a long, straight wire. The wire lies in th...

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Q: A 200g bullet which has velocity 200 m/s sticks to the stationary block of 5 kg mass. They move toge...

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Q: A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 4.10 g coins stack...

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Q: What do you observe about the equipotential lines very near the charges and very far away from them?

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Q: You built an irrigation system for a farm lot that flows water at a rate of 0.42m^3/s. Calculate the...

A: Apply continuity equation to calculate the velocity of water when it is on ground. Q=A1v10.42=π43×0....

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Q: Part A What is the maximum power consumption of a 3.0-V portable CD player that draws a maximum of 3...

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Q: Calculate the rotational inertia of a meter stick, with mass 0.386 kg, about an axis perpendicular t...

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Q: Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wa...

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Q: ( ) A point charge Q = -30 nC is located at m. We want to find the electric field at location A m....

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Q: Problem 2: Consider two two long, straight, parallel, current-carrying wires, separated by a distanc...

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Q: Two 50 μF capacitor are connected in parallel. The equivalent capacitance of the combination is

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Q: Mercury’s density is about 17 times that of ethyl alcohol. Additionally, the bulk modulus for Mercur...

A: Mercury's density is about 17 times that of ethyl alcohol, i.e. ρM = 17ρEA. The bulk modulus for Mer...

Q: Did a change in the net force produced a change in acceleration by the same factor? Do your results ...

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Q: Please illustrate.nA certain amount of excess charge is transferred a conducting sphere with a diame...

A: a V= KQ/R Q=VR/K Q =  (2.5x10³) (0.15) / (9x109)  Q=4.17X10-8 с   (b)  V'= (9x109) (4.17×10-8) /(0.2...

Q: A canon ball, projected at angle of 60° above the horizontal strikes a tower 30m away at a point 15m...

A: As per our guidelines we will solve first three subparts for you. To get remaining subparts solved p...

Q: Q.14. A sound wave travels at a speed of 339 m s. If its wavelength is 1.5 cm, what is the frequency...

A: Given data-                             speed of the sound wave (v) = 339 m/s                       ...

Q: How much heat must be added to 1200 lb copper to raise its temperature from 100 0F to 450 0F?

A: Mass of copper m=1200 lb=544.31 kg, initial temperature T1=100oF=310.93 K, final temperature T2=450o...

Q: The electric field everywhere on the surface of a charged sphere of radius 0.273 m has a magnitude o...

A: Given value--- radius = 0.273 m. Electric field = 520 N/C. We have to find--- (a) What is the net...

Q: Heat energy does not depend on the size or type of object. true false

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Q: Data and Result Part I. Keeping the total mass constant Experimental Value of g Trial M1 M2 Time A_e...

A: Given: a_exp F 0.71 196 1.37 392 1.98 588 2.76 784 3.43 980

Q: A tsunami can have a wavelength in water of 100 km and travel at up to speeds of 800 km/hr. So, why ...

A: Tsunamis — once slangily called tidal waves — are extremely powerful waves caused by large undersea ...

Nature of light

Light is transverse and electromagnetic radiation that exhibits the properties of a wave as well as a particle. For this reason, light is said to have a “dual nature.”