A pyroclastic material is ejected vertically upward from Taal volcano with an initial speed of 55 m/s. Ignoring air resistance. (a) How high will take the pyroclastic material reach the maximum height? (b) How long it will reach the maximum displacement?

Q: Which of the following combinations has the dimension of electrical resistance (€o is the permittivi...

A: We construct the dimensional formulae for both the quantities and use them to find the required answ...

Q: A metal rod slides along two metal rails. The rails are connected to a resistor R, forming a complet...

A:

Q: The diagram shows a spherical surface which is silvered on both sides. Thus, the surface serves as d...

A: Since you have posted multiple questions, we will solve first three only. please resubmit the questi...

Q: (a) A circular copper ring at 19.0°C has a hole with an area of 9.95 cm2. what minimum temperature m...

A: Given : Temperature of Copper ring = 19 oC Area of hole=9.95 cm2 Cross- sectional area of metal rod ...

Q: istance in meters from its center is the potential 1.00 MV? C) an oxygen atom with two missing elect...

A: We know that the formula of the potential is given as  V = kqr where q is the charger is the radius ...

Q: One day, you are driving your car down the highway, and you notice that you are driving well over th...

A:

Q: A contestant in a winter games event pushes a 52.0 kg block of ice across a frozen lake as shown in ...

A: We have given that a contestant in a winter games event pushes a 52 kg block of ice across a frozen ...

Q: (v= gh Deoive this equati on starhing from this equation (mgh=mv²+ 1 Iw V = 2. (v= gh) storting from...

A:

Q: Question 1 The range of a projectile is directly proportional to its A angle of projection B initial...

A: According to question we need to define range of projection ?

Q: If the Ferris wheel is rotating at a constant rate, what is the direction of the acceleration at poi...

A: According to question we need to define direction of acceleration. 

Q: 3. A charge of 12 µC when placed in electric field experiences a force of 648 N. What is the magnitu...

A:

Q: The problem below explores the basic principle behind electric motors, which we will discuss in clas...

A: Area of the loop, A = H×W = 59.6744 m² Current, I = 6.62 A Magnetic field, B = 5.03 T Number of turn...

Q: A series circuit is comprised of a 200VDC battery, a switch, a 1 kΩ resistor and a 10000 µF capacito...

A:

Q: A jet plane travelling horizontally at 1x10² m/s drops a rocket from a considerable height. The rock...

A: Given  :  Ux= 100 m/s,  ax = 20m/s², h = 1000 m

Q: C3 = 9.5 µF C4-7.8 μF С2 %3D 4.5 иF С1 -8.5 дF V = 20 V

A: Given that:- C1=8.5uF; C2=4.5iF; C3=9.5uF; C4=7.8uF

Q: The 3 types of friction that we consider are A , and

A: In this question they have asked about 3 types of friction  Friction is basically the opposing force...

Q: a) How long does Alexis take to meet Lourdes? And How far does each of them travel until they meet? ...

A:

Q: A punter kicks a football at an angle of 30 degrees with the horizontal at an initial speed of 15 m/...

A: Determine the horizontal and vertical velocities.

Q: body covering the whole 32pi-meter circumference of a circular path for 45 seconds travels at a cons...

A:

Q: metal rod slides along two metal rails. The rails are connected to a resistor R, forming a complete ...

A: According to Faraday's second law Induced emf =- rate of change of magnetic flux Induced current I =...

Q: 2. Find the angle between the position vectors (from the origin) to the points (3, -4, 0) and (-2, 1...

A: Let,A=(3,-4,0) B=(-2,1,0) We have to find the angle between these two vector

Q: Part A A 20.0-kg projectile is fired at an angle of 60.0 ° above the horizontal with a speed of 80.0...

A:

Q: 2. Two charges of +8.0 mC and -6.0 mC attract each other with a force of 3.0 x 10' N in a vacuum. Wh...

A: The formula for force between two charges q1 and q2  separated by a distance d is given by . F = (K ...

Q: what two angels of elevation will enable a projectile to reach a target 13km downrange on the same l...

A: Given  Range = 13 km = 13000 m Initial speed = 424 m/sec

Q: A person's energy output is being measured using a treadmill (see the diagram below). The angle of i...

A:

Q: Using the following values: North and West are negative and east and south are positive. Lola walks ...

A:

Q: AW-2 Find the difference in phase between two identical waves traveling in the same direction on a s...

A: Write the expressions of two identical waves. x1=Acosωtx2=Acosωt+ϕ

Q: Consider the circuit shown. Let ε=16.0 and let R1=R2=R3=R4=6.00Ω. What is the voltage across R3? A....

A: The resistance of the resistor R1=R2=R3=R4=6.00 Ω The value of ε=16.0 V

Q: Friction ALWAYS opposes an object's motion, even if the object just "wants" to move.

A: In this question it is asked that whether this statement is true or false " Friction ALWAYS opposes ...

Q: determine the distance and displacement of the following vector?  (Charity is the vector) Charity wa...

A: We know that we have given that  Charity walked 5 meters east, 6 meters west and 8 meters east. We h...

Q: A bumper car with mass m1 = 110 kg is moving to the right with a velocity of v1 = 4.8 m/s. A second ...

A:

Q: 5. Use the values you found on |E* | x r² and the value of the point charge InC to find constant k e...

A: Given:

Q: MBINATION OF SERIES AND PARALLEL Rq = 7 N R3 = 6 N V = 24 V R2 = 10 N RA = 4 N (a) Circuit schematic

A:

Q: Calculate the magnitude and direction of the electric field at point P which is 65 cm to the right o...

A: Given that                    The point charge(Q) = 9.0μC = 9.0×10-6C          (1μ = 10-6) We have t...

Q: /flour in a Circula mouing on a Smosth 6,What centripe tal forse 1s needed to Keep a mass of 2.0. .k...

A: Given, Mass of  object (m)= 2kg Radius of circular path(r)=0.50 m One revolution in 4 sec (T=4sec)

Q: A CAR MOVED FROM REST AT POINT A AND ACCELERATED UNIFORMLY AT A RATE OF (2 METERS PER SECOND SQUARED...

A: GivenInitial velocity at point A (U) =0 m/sAcceleration (a) = 2 m/s2Distance of point B from point A...

Q: Consider the circuit shown. Let ɛ = 16.0 V and let %3D R1 = R2 = R3 = R4 = 6.002. What is the voltag...

A:

Q: Constants Part A A 15.0 kg block is attached to a very light morizontal spring of force constant 325...

A:

Q: A61 kg sprinter, starting from rest, runs 41 m in 7.0s at constant acceleration. What is the magnitu...

A: Using the kinematics S=1/2*a*(t) ^2 Where a is the acceleration & t is time taken for the journe...

Q: An object with total mass mtotal = 15 kg is sitting at rest when it explodes into three pieces. One ...

A: M Total = 15 kg M 1 = 4.8 kg M 2  = 5.2 kg  V 1 = 28.3 m/s V 2 = 21.5 m/s θ 1 = 24° θ 2 = 29°  

Q: 4. What happens to the force between two charged metal spheres in a vacuum if the charge on each is ...

A:

Q: If a cable has a velocity factor of 0.8, how long would it take a signal to travel 3000 kilometers a...

A: Write the expression for the velocity factor to determine the speed.

Q: A person stands 18.5 cm away from a plane mirror. (a) What is the distance between the person and hi...

A: distance between plane mirror and person is   18.5  cm.

Q: A signal no. 1 storm is up in your area, and the weather sirens are turned on to give warning to the...

A:

Q: 5.) A point charge of −5uC is located at x=4 m,y=−2 m. A second point charge of 12uC is located at x...

A:

Q: Which of the following combinations has the dimension of electrical resistance (€o is the permittivi...

A:

Q: The rope's breaking strength is 1,000 N. Will the stuntman make it across the pool without falling i...

A: mass of stunt man = m = 81.5 kg radius = r = 11 m speed at the bottom = 7.9 m/s

Q: the missing values the Find in following cir cuits. Cz = 2 F C3- 4F a) c,=3F 18V Find: V, Cea %3D Q ...

A:

Q: (a) Compute the potential energy stored in the bow, if the arrow of mass 5.50 x 10 energy is conserv...

A: Givenm=5.5×10-2  kgv=37.0 m/s

Q: A rocket powered toy car is released from rest at the edge of a table whose surface is 3.0 m above t...

A: Given: ux=0 m/suy=0 m/s    (since, car released from rest)H=3.0mm=1.0kgF=3.0N (horizontal)

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.