Question 7 An electron undergoes a transition from the 3rd energy level to the ground state in a hydrogen atom. Selected Energy Levels for Hydrogen -0.544 eV -0.850 eV -1.51 eV -3.40 V P -13.6 eV How many possible wavelengths will there be 2

Q: Tritium, or 3H, has a half-life of 12.32 years. Imagine a sample of tritium is prepared. (a) What…

A: half life = 12.32 years Original number of nuclei = No

Q: In order to get the reactance to 120 at 1.0 MHz, you add a capacitor in series to your 3.0 nF…

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Q: The engine of an automobile has an intake air of 20 degrees celsius and compresses it adiabatically…

A: GivenT1=20∘Clet initial volume be Vfinal volume, V2=0.1Vfor air,γ=1.4we have adiabtic…

Q: While moving from her third-storey apartment, a university student decides to lower her couch…

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Q: 7-turn solenoid has a radius of 7.25 mm and an overall length of 15.0 cm. (a) What is its…

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Q: An ideal gas at 7°C is in a spherical flexible container having a radius of 1.04 cm. The gas is…

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Q: An LC circuit like that in the figure below consists of a 3.30-H inductor and an 832-pF capacitor…

A: Solution:- 1) In LC oscillation, the charge on capacitor at time t, is given by q = Qcos(ωt + Φ)…

Q: Which statement about a single thin lens is correct? A diverging lens always produces a virtual…

A: The lens formula is given as, 1/f = 1/v - 1/u Here, for a single lens A diverging lens always makes…

Q: A 17 kg child was going 3 m/s on skates when he collides with a 76 kg adult who was going -1.4 m/s.…

A: Mass of child , mc = 17kg  Velocity before collision , uc = 3 m/s Mass of adult , ma = 76kg…

Q: An astronaut on the ISS is doing an experiment with two puffy Cheetos inside a carefully sealed…

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Q: Consider the circuit in the figure below, taking & = 6.00 V, L = 7.20 mH, and R = 7.20 N. S R (a)…

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

Q: What is the magnification produced by a plane mirror? O 1/4 0 1 02 O 3/2 O 1/2

A: In the given problem we have to find the magnification produced by a plane mirror.   Definition…

Q: A mass weighing 4 pounds is attached to a spring whose constant is 2 lb/ft. The medium offers a…

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Q: A 20.0-m-long uniform beam weighing 700 N rests on walls A and B, as shown in the figure below.…

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Q: Two blocks connected by a cord passing over a small, frictionless pulley rest on frictionless planes…

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Q: A motorcycle travels 80 m [north] in 15 s. The motorcycle then turns around and travels 60 m [south]…

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Q: If q2 = 93 = 94 = 1 nC and a = 1 m, then find the magnitude of q₁ (in nC) so that the net electric…

A: Givenq2=q3=q4=1 nCa=1mwe need to find magnitude of q1 to make net force on q4 zero.

Q: Water is made of two elements, hydrogen, and oxygen. What possible elements could substitute for…

A: What possible elements could substitute for each of those elements in water?

Q: (d) There are two samples of A and B. After 6000 joules of heat are added to each sample of A and B,…

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Q: As shown above, a block is exhibiting SHM on a horizontal frictionless surface. Complete the table…

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Q: A 1,801-kg car starts from rest at the top of a driveway 6.14 m long that is sloped at an angle of…

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Q: among the following which cannot be a resultant force of 5 N and 10 N? a. 4N b. 5N C. 8 N d. 12 N

A: Given data:  Two forces F1 = 5 N and F2 = 10 N Required: The force that cannot be a resultant force…

Q: An iron boiler of mass 200 kg contains 590 kg of water at 20 °C. A heater supplies energy at the…

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Q: www 19 wwww Rs -Sliding contact Ro www R₂ b www R₂

A: When points a and b are at same potential, no current flows between them and this condition is…

Q: When some stars use up their fuel, they undergo a catastrophic explosion called a supernova. This…

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Q: (d) Calculate the angular velocity of the of Earth in its orbit around the Sun. rad/s W rev = (e)…

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Q: ich of the following can be considered units for momentum and impulse? Select more than one.…

A: The relationship between the impulse and momentum is   J=∆p   From the above equation , the both…

Q: Two resistors are connected in parallel with an 96 volt battery. The resistors have values of R1 =…

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Q: A car of mass 800 kg accelerates from rest to a speed of 20 m/s in a time of 6.0 Calculate the…

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Q: I'm having trouble understanding this.   Suppose we have a spaceship about the size of a typical…

A: The mass of the ship is M = 130 million kilograms = 1.3×108 kg The required velocity is 12 % of the…

Q: spring is on a horizontal table and a mass of 10 kg approaches it at a speed of 5 m/sec; it is 0.5 m…

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Q: The two blocks in the figure below are connected by a massless rope that passes over a pulley. The…

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Q: 2. KLE 1. t t 3. t

A: 1st graph  This is  a uniform motion in a straight line  which means the speed(slope) is constant…

Q: Hooke's law describes an ideal spring. Many real springs are better described by the restoring force…

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Q: The displacement of an oscillating mass is given by x(t) = 10 cos( 3 t ). At time t = 1.5π s, what…

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Q: A 3 m- long ladder, as shown in Figure leans against a frictionless wall. The coefficient of static…

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Q: You have landed on an alien planet and because you have nothing better to do with your time, you…

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Q: A block on a horizontal frictionless surface is attached to a spring. The block is exhibiting SHM…

A: The amplitude of the body is given as: Δxmax=0.94 m At the equilibrium position, the velocity of the…

Q: An inductor and a resistor are connected in parallel to an AC source. If the current through the…

A: Givencurrent through resistor, IR=IRocos(ωt)and inductor and resistor are in parallel to each other

Q: A square wire with 2 m sides is perpendicular to a uniform magnetic field, with half the area of the…

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Q: A person's face is 30 cm in front of a concave spherical shaving mirror. If the image is an erect…

A: The person's face is u=-30 cm The magnification, m=3 times

Q: A lightweight object and a very heavy object are given a push and are sliding with equal speeds…

A: let light weight objec mass is mheavy object mass is Mas its given that they both have same initial…

Q: 1. A student wanted to find the density of an object of unknown composition with a volume of 5.50…

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Q: 3. a. You're at a miniature golf course, and you're trying to hit your ball through a spinning…

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Q: What is the focal length of a contact lens that will allow a person with a near point of 125 cm to…

A: Given,near point distance, q = -125cmobject distance, p = 25cm

Q: A film with thickness d=300 nm and index of refraction n=1.5 to white light from one side. Which…

A: For wavelength that are not reflected, λm = 2ntm m = 0, 1, 2, 3.... n = refractive index t =…

Q: A light, rigid rod of length  ℓ = 1.00 m  joins two particles, with masses  m1 = 4.00 kg  and  m2…

A: Givenl=1 mm1=4 kgm2=3 kgv=4.20 m/sd=10.5 cmRoute to solution:-angular momentum, L=Iωwhere I is…

Q: | Consider the nuclear reaction He + Li absorbed or liberated? How much energy? 5B+ on. Is energy

A: It is known that  Energy = [(mass of reactant - mass of product)]× c2 Where c = speed of light in…

Q: 2. In a gravity escape system (GES), an enclosed lifeboat on a large ship is deployed by letting it…

A: Given data, Height h=2.5 m Mass m=4970 kg

Q: A bowling ball encounters a 0.760-m vertical rise on the way back to the ball rack, as the drawing…

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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: