Our neighbour is asking us for the length of the shortest ladder that is able to reach the house by clearing the 8 meters high fence located three meters away from his house (see figure below): 3mt 8 mt Assume that the vertical wall of the house and the horizontal ground have infinite extent.

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A: Firstly calculate the equivalent resistance of the circuit.  Then determine the current flowing in…

Q: Goal: Find the angular displacement of the ray after having passed 1. Find the first angle of…

A: Using Snell's law on the first incidence surface for light: n1*sin i = n2*sin r n1 = refractive…

Q: If a communication satellite is going to be placed in orbit around the Earth at a distance of 2 x…

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Q: The displacement volume of an automobile engine is 167 in .What is this volume in liters ?

A:

Q: Figure below shows a position vs time graph. At which lettered point or points is the object: (a)…

A: The slope of the position time graph is called the velocity.

Q: Pure silicon contains approximately 1.0x10^16 free electrons per cubic meter. a) At room…

A: Given: In this question, the given details are, Pure silicon contains approximately 1.0x1016 free…

Q: 8. The figure below shows a 10-kg sign held by 2 cables at various positions. For each position,…

A:

Q: B A coin sits on a rotating turntable as shown in the figure. At the time shown in the figure, which…

A: We need to say what the direction of friction will be on the coin on turntable.

Q: A pair of charged conducting plates produces a uniform field of 12,000 N/C, directed to the right,…

A: Given: In this question, the given details are, A pair of charged conducting plates produces a…

Q: Problem 2 A rocket is launched from rest on the ground with an upward acceleration of 5 m/s². 6 s…

A: Acceleration (a) = 5 m/sTime (t) = 6 s Time (t) = 6 s

Q: Q9) A position vector of body r=t'i +t j– 2t k , if the distance in meter and time in sec, 1) find…

A: Given: Potion vector, r→=t3 i^+t2 j^-2t k^ m Then after t=2 sec. r→=23 i^+22 j^-22 k^=8 i^+4 j^-4 k^…

Q: Compute for the voltage Vab in the circuit shown below. RS a- 2 Ohms V3 b- 허미다 10V ○-12.6547 V ○…

A: Current is dependent on voltage between 2 terminals. This is called Ohm's law. More is the potential…

Q: Problem A moving electron has a Kinetic Energy K1. After a net amount of work is done on it, the…

A:

Q: V ma www k Q8. A small object of mass m2 = 4 kg is placed on top of another object of mass m/ = 6…

A: Given is a spring mass system in the figure. the masses m1=6kgandm2=4kg with m2 on top of m1.…

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Q: Find the force(F) on a 10µC charge at (1,1,3)m if four like charges of 200µC are located on thex and…

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Q: If we place a particle with a charge of 1.4 x 109 C at a position where the electric field is 8.5 x…

A: Given: In this question, the given details are, If we place a particle with a charge of 1.4x109 C at…

Q: Magnesium has a work function of 3.68 eV. Imagine we use this material as the cathode in a…

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Q: 10 feet Endline 36.9° 30 yards 10 yards During a football game Mason kicks a ball from the ground at…

A: U= 20 m/s = 21.8723 yard/s = 65.6168 foot/s  Angle is 36.9°

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A: Given: In this question, the given details are, When you drive your car over a bump, the springs…

Q: A metal sphere of radius 30 cm has a net charge of 30.0 nC. What is the magnitude of the electric…

A: Given: In this question, the given details are, A metal sphere of radius 30 cm has a net charge of…

Q: A satellite is in circular orbit at an altitude of 1500 km above the surface of a nonrotating planet…

A: Given: In this question, the given details are, A satellite is in circular orbit at an altitude of…

Q: Explain why. Thanks

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Q: r from the starter cable of a car, carrying 140 A, must you be to experience a field less than the…

A: Current(I)=140A Magneticfield(B)=5.10×10-5 T

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A: Given Data: Let us consider the given forces acting on rectangular table. We are to find resultant…

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Q: Problem 1 A rock is thrown straight upward at 9 m/s just over the side of a raised deck, 5.5 m above…

A: Initial velocity of the rock, Height from which the rock was thrown,

Q: To construct a solenoid, you wrap insulated wire uniformly around a plastic tube 14 cm in diameter…

A: Given: In this question, the given details are, To construct a solenoid, you wrap insulated wire…

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Debye Theory of Solids

In solid-state physics, debye theory is used to estimate the phonons contributing to the specific heat capacity in a solid. It explains that the specific heat is a consequence of the vibrations of the atomic lattice of the solid, which is in contrast to the Einstein model. In the Einstein model, solids are treated as independent, non-interacting quantum harmonic oscillators. This model clearly explains the low-temperature dependence of the heat capacity, which is proportional to T3. This is known as Debye T3 law.