1. Calculate the ratio of the Einstein coefficients of spontaneous and stimulated emission, A and B, for transitions with the following characteristics: a. 70.8 pm X-rays b. 500 nm visible light c. 3000 cm¹ infrared radiation.

Q: Part A A short current element dl = (0.500 mm) j carries a current of 5.30 A in the same direction…

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Q: Part B How much force does the 2.0 kg block exert on the 1.0 kg block? Express your answer with the…

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Q: 1)A square coil with N = 50 turns has sides of length I = 15 cm. When it is placed in a uniform…

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Q: Consider the following figure. (Assume V = 34.0 V, R₁ = 2.00 2, and R₂ = 6.18 2.) R₁ www V 3.000 Σ…

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Q: I need help with all the questions

A: EXPLANATION:  • From Faraday's second law of electromagnetic induction, the induced emf in a coil is…

Q: Q4. Convert these into proper vector notation: Westward velocity of 42 km/h. Position 6.5 measured…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

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A: Mass of the baseball m = 175.00 g = 0.175 kg Initial velocity of the ball u = 35.70 m/s Final…

Q: 6. How much charge flows through a 12 V battery when a 2 µF capacitor is connected across its…

A: Note: As per the guidelines, we can only answer first question of multiple question. Sorry for the…

Q: |There is a 30cM long Solenoid witha o3 ľ faxce field initas Center Ito has a 4cM radis and has…

A: The given data are: L=30 cm=0.3 mB=3 Tr=4 cmN=80000 Here, L denotes the length, B denotes the…

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Q: A sonic depth gauge is placed 5.5 m above the ground. An ultrasound pulse sent downward reflects off…

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Q: A baseball fan sitting in the "cheap seats" is d = 149 m from home plate (see the figure below). How…

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Q: *57 G0 A puck of mass m = 1.50 kg slides in a circle of radius r = 20.0 cm on a frictionless table…

A: Given data:  Mass of puck (m) = 1.50 kg Radius of circular (r) = 20.0 cm Mass of cylinder (M) = 2.50…

Q: A small plastic ball of mass m = 1.50 g is suspended by a string of length L = 21.5 cm in a uniform…

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Q: 4. A 3 kg uniform hoop has a radius of 2 m. What is the moment of inertia around an axis at the…

A: If any object is under rotation, moment of inertia is associated with it and denoted by the symbol…

Q: A person exerts 195 lb of force to push a box horizontally across a rough floor. If the person…

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Q: In the figure, a 2.7 g ice flake is released from the edge of a hemispherical bowl whose radius r is…

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Q: Initially, two resistors R1 and R2 are connected in series. The connection of the terminals of R1…

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Q: A 1-kg metal ball slides across an incredibly smooth table at 5 m/s and hits a 0.2-kg metal ball at…

A: For the given problem, we need to check the law of conservation of momentum and energy before and…

Q: 2. A stack of bricks with mass m=200 kg is sitting on a frictionless ramp, connected to a rope as…

A: Given that:- Mass of the stack of bricks=m=200kg

Q: •• CALC A semicircle of radius a is in the first and second quadrants, with the center of curvature…

A: Refer to the following figure :

Q: 1. Re-write the following measurement results in their clearest form, with suitable numbers of…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: 1)The circuit on the right must be solved by reducing it to a single equivalent resistance, R= 32…

A: Given: V=24 V R1=3 ΩR2=5 ΩR3=4 ΩR4=6 Ω A) R2, R3 are connected in parallel Rp=R2×R3R2+R3     =5×45+4…

Q: 1. The position-versus-time graph on the right shows the position of an object moving in a straight…

A: As per our guidelines, we are supposed to answer only first three subparts in case of multiple…