An electron in hydrogen drops from the 5th to the 3rd orbital. What is the energy of the photon produced, in eV? [?] eV

Q: If a flywheel is initially moving at an angular velocity Wi = 10 rad/s and accelerates to a final…

A: α = (Wf - Wi)/t  α = (400 - 10)/3α = 130rad/s2

Q: 2. A 60kg skateboarder is initially at rest on top of a 8kg skateboard. The skateboarder then steps…

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Q: Question 10 QAM is a modulation technique that varies the baseband signal by referencing two…

A: Quadrature amplitude modulation (QAM) is family of digital modulation methods and a related family…

Q: A lead cube has a total mass of 77.8 kg. Solve for the length its side in cm. Assume SG to be 11.33.…

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Q: minimum for λ, 660 nm coincides with first maxima for In a single slit diffraction experiment first…

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Q: 6. Faraday's law of induction states that A. the direction of the induced emf is such that it…

A: 6. Faradays law states that Let's check each option one by one A. The direction of the induced EMF…

Q: 2.75 A steel rod is stretched between two walls. At 20°C, the tensile force in the rod is 5000 N. If…

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Q: July 15,2004,NaDa lunch the aura spacecraft(mass is 2970kg) to study the earth climate and…

A: spacecraft(mass is 2970kg) to study the earth climate and atmospheric,the satellite was injected…

Q: Thermal energy is produced in a resistor at a rate of 113 W when the current is 2.49 A. What is the…

A: Given: The power is 113 W. The current in the circuit is 2.49 A.

Q: For this circuit, complete the VIRP table. www R₁-2002 10V R₂=190 www R₂=200 R1 R2 R3 Totals R P

A: Dewr student The ohm's law states that relation between potential drop across a resister, current,…

Q: >) A child does 8.97 x 10² J of work in pulling a sleigh 45.3 m along a snowy horizontal surface.…

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Q: 9.00kg hanging object is connected by a light, in extensible cord over a light, frictionless pulley…

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Q: In a lab, a foot-long test tube contains gasoline (density equal to 748.9 kg/m³) and oil (density…

A: GivenLength of test tube, h=1 foot=0.3048 m Density of Gasoline, ρg=748.9 kg/m3Density of oil,…

Q: 7. Two long and parallel straight wires A and B carrying currents of 8.0 A and 5.0 A in the same…

A: Given data: The current in wire A is IA=8.0 A. The current in wire B is IB=5.0 A. The distance…

Q: Calculate the momentum of a 938-MeV proton. Rest energy of proton is 938-MeV. A. 938 MeV/c B. 1876…

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Q: Directions: Solve the following problems and show your complete solutions. 2. The international…

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Q: A block of wood 0.162 m thick is floating in sea water. The SG of wood is 0.65 while that of…

A: Let A denotes the required minimum area  of cross-section of the given block of wood.

Q: 2. If the resistance required is 71 k and the power rating is 1.1W, calculate the length of aluminum…

A: Given: The power rating is 71 kΩ. The power rating is 1.1 W. The radius of the wire is 11 cm. The…

Q: How much work is required to increase the surface area of a container of water from 200.0 cm² to…

A: Surface tension (T) is the property of liquid that tries to minimize its  free surface area. It is…

Q: A 5 W, a 20 W, and a 25 W resistor are connected in parallel and placed across a 9.0 V potential…

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Q: 3. Describe the shape of the curve in Figure 7. How is the magnetic field related to the current…

A: The magnetic field inside the solenoid is proportional to both the applied current and the number of…

Q: Resistors in Series and in Parallel

A: Series resistor propertiesAny time we have more than one resistor in a row, the configuration is…

Q: (b) A 2.50 nC positive point charge is located at point A. What is the electric potential at point…

A: Given: Charge Q = 2.50 nC = 2.50 x 10-9 C To Find:  Electric potential at point B Solution: Step1:…

Q: 1. Which of the following laws is analogous to Gauss's law in electro C. Coulomb's law A. Ampere's…

A: We are authorized to answer one Question at a time, since you have not mentioned which question you…

Q: Light of frequency 9.62 x 1014 Hz (312 nm) strikes a surface of calcium (Wo = 2.90 eV). How much…

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Q: Why does a child in a wagon seem to fall back when you give the wagon a sharp full forward? Explain…

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Q: Two particles are fixed to an x axis: particle 1 of charge q cm. At what coordinate on the x axis is…

A: Givenq1=1.69×10-8 Cat x1=22 cm=0.22 mq2=-4.84 q1x2=66.0 cm=0.66 m

Q: SC.91 1. MAIN Idea Explain Why does a magnet exert a force on another magnet when the two magnets…

A: Why does a magnet exert a force on another magnet.

Q: A 1.2kg ball is traveling to the right at 4.5m/s. It collides with a 2.1kg ball moving to the left…

A: Given, mass of the ball, m1 = 1.2 kg velocity of the ball, u1 4.5 ms towards right mass of the…

Q: In a lab, a foot-long test tube contains gasoline (density equal to 748.9 kg/m³) and oil (density…

A: Use pressure formula and add pressure for both the parts.

Q: One concert hall is twice as large as another. The temperature of the air in the second hall is 30%…

A: The resonant frequency for smaller Hall is 40 Hz.

Q: A circular piece of sheet metal has a radius of 10 centimeters and a mass of 800 grams. What is the…

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Q: Consider a flute (open at both ends) with length L. What is the corresponding wavelength of its…

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Q: An object is placed in front of a converging lens in such a position that the lens (f = 13.8 cm)…

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Q: A step-up transformer has 42 turns in primary coil and 439 turns in the secondary coil. The primary…

A: We know that  Vs/Vp = Ns/Np  Vs = NsVp/Np

Q: 2. A metal ring is oriented with the plane of its area perpendicular into a spatially uniform…

A: Given: A metal ring Plane of ring is perpendicular to uniform magnetic field Magnetic field…

Q: Calculate the momentum of a 938-MeV proton. Rest energy of proton is 938-MeV

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Q: (1) Draw the free-body diagram for a basketball player 4(a) just before leaving the ground on a…

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Q: Using Microsoft Excel, plot a graph of Resistance on y-axis and 1/A on x-axis ], then find the…

A: Resistance is measure of how much the conductor resists or opposes the flow of charge. It is…

Q: is dropped from a cliff. After it has passed a point 12 m below the edge of the A rocket moves…

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Q: Electric vehicles have less range they can drive compared to plug-in hybrid electric vehicles. O…

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Q: #1 Determine the maximum weight of the engine that can be supported without exceeding a tension of…

A: Given : Tension in AB : TAB = 450 N  Tension in AC : TAC = 480 N  Angle = 30°  Find : Maximum weight…

Q: A 1.2 kW electric heater is connected to a 120 V source. What current flows through the heater?

A: Given Power=1.2kW=1200W Voltage = 120V Unknown ÷ Current (I)= ? Formula ÷ P= I×V I=P/V Current…

Q: A ball is thrown at 25 m/s at an angle of 60 degrees above the horizontal. A wind blowing in the…

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Q: Only one force acts on an object. Can the object have zero acceleration? Can it have zero velocity?…

A: Acceleration of an object due to force   acting on it , is given by :- a = (Fnet)/m If only one…

Q: In a severe head-on collision of an automobile, a deceleration of 60g’s or more (1 g = 32.2 ft/s2)…

A: Consider the given data as below.  Deceleration,  a=60×g=60×32.2=1932 fts2 Mass, m=45 lb…

Q: 5. A circular loop of wire with a radius of 12.0 cm and oriented in the horizontal xy-plane is…

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Q: A charged object has 82 protons, 82 neutrons, and 109 electrons on it. a) What is the element? b)…

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Q: The work function for magnesium is 3.70 eV. What is its cutoff frequency? Hint: 1 eV = 1.60 x 10-19…

A: Given that                         The work function for magnesium is (W) = 3.70eV The work function…

The Bohr model

Students often get confused between Rutherford’s model and Bohr model of an atom. They interpret the postulates of both these models to be the same, which is incorrect. Rutherford’s model differs from Bohr’s model in the following ways: