5. Suppose hat a particular muchine in a facfoal has two 'steel pieces that must (ub against each other 'at a constunt Speed. Before either plece of steel has bcen treated to reduce friction,the force recessary to get them to perform properly is 5i8 N. Afler the Dieces have been trea- ted with oil, what 'will be the required

Q: 6. A small body of mass 3 kg revolves uniformly in a circle on a horizontal frictionless surface…

A: The radius of the circle,   The mass of the object,

Q: Say we have à = 21+ 3) and à - B = 0. a) If B=51+ B). What is the value of By? b) If |B| = 1. How…

A:

Q: in the figure below, a metal bar sitting on two parallel conducting rails, connected to each other…

A: Solution:   e) Given that,   B=2.60 T at t=0 dB/dt=0.50 T/s x0=0.100 mV=2.25 m/s

Q: As a ball falls under the influence of gravity, does gravity do positive work or negative work?…

A:

Q: Forced undamped motion satisfies a differential equation of the form d2y oy F sin(wt B) dt2

A: The differential equation of a forced undamped motion is

Q: If Sam steps off the diving board, how long does the fall take? How fast is Sam going when he hits…

A:

Q: For A= 21 +31-K, B = -21+ 3 + 5k, and C = 3ĵ- 5k, find C. (A-B). 33 X Be careful when subt

A: Given data:  Three vectors A = 2i + 3j - k B = -2i + 3j + 5k C = 3j - 5k Required: The value of C.(A…

Q: I need help with 4 please and round all numbers to three significant digits please

A:

Q: . A thin plate of infinite area has a charge density of 5 x 10-12 C/m². This plate is at x = 0 m and…

A:

Q: honest 2. A cord of mass 0.55 kg is stretched between two supports 30 m apart. The tension in the…

A: Concept: Question 2: Given: Mass of cord=0.55 kgLength =30 mTension= 150 N The Relationship between…

Q: Add the following two vectors if Keep a few digits. A= 15 a= 20 degrees B=11N b= 40 degrees B. C= at…

A:

Q: Calculate the number of kilowatt-hours (kW-hrs) consumed in a week by an 850- Watt window air…

A: Given that:-Power of Air conditioner, P=850 WattLeft on all day, Time of consumption, t=24 hourWe…

Q: 5. It's time for the game Where's That Satellite! What celestial body is your satellite orbiting if…

A: Given Time period of satellite-  T= 49[hours]   =49×3600   =176400[s] Converting to seconds, we…

Q: 2. Express the vector 7 (below) in terms of i and j unit vectors. Y ŕ 30° X 50° 6 cm

A: Resolving r→ in direction of x and y axes as  (r→cosθi^, r→sinθj)^

Q: A fully loaded, slow-moving freight elevator has a cab with a total mass of 1500 kg, which is…

A: The situation is basically the motor is helping to raise a net mass (1500-920)=580 kg by a height of…

Q: A tennis player swings her 1000 g racket with a speed of 11 m/s. She hits a 60 g tennis ball that…

A: Given: Mass of racket is 1000 g Rocket's Speed is 11 m/s Mass of tennis ball is 60 g and speed -is…

Q: r AB= ? in (I+j+k)

A: Given:

Q: QA.18: By what factor is the capacitance of a metal sphere multiplied if its volume is tripled? (a)…

A:

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.