Is it tension or compression that strenghtens an arch that supports a load?

Q: Does fluid friction vary with speed? With area of contact?

A: The fluid friction arises due to the sliding of the different layers on top of each other moving…

Q: What is the relationship between center of gravity and support base for an object in stable…

A: Centre of gravity is the point where all the weight of the object is concentrated.

Q: Why is rust a greater problem for thin iron rods than for thick iron piles?

A:

Q: A uniform 40.0-kg scaffold of length 6.0 m is supported by two light cables, as shown below. An…

A: Given data The mass of the scaffold, M = 40 kg The length of the scaffold, L = 6 m The weight of the…

Q: Three physics majors stand with their backs against a wall. They are all in good physical shape.…

A: As each person leans over, a vertical line is passing through the center of gravity. A person can…

Q: You take a young child to the park to play on the teeter totter. You weight 175 lb and the child…

A:

Q: Why do you tend to lean backward when carrying a heavyload in your arms?

A:

Q: tension exerted by the string-

A:

Q: A man can exert a maximum pull of 1000 N but wishes to lift a new stone door for his cave weighing…

A:

Q: Calculate the tension in the cable supporting the beam shown in the figure. If a plant weighing 100…

A:

Q: Consider two bridges that are exact replicas of each other except that every dimension of the larger…

A: Let the length of the smaller bridge be I and that of the larger one be 21. The area of the…

Q: When the branch of a tree is shaken , fruit falls. Why?

A: Tree and the hanging fruit are in the state of rest initially. When the branch is shaken vigorously,…

Q: As an oil well is drilled, each new section of drill pipe support its oun weight crel that of the…

A: Given, L∘=6.0 mL∘=length of the pipeγ=1.6×1010 N/m2

Q: IS attached to the ceiling and is s holding up a board. with the given data, Find The coeffi cient…

A: Given that: l=117 cm h=30.75 cm θ=10° T=7.0 N M=1.473 kg

Q: The amount that an object stretches or compresses depends on its ar as well as the strength of the…

A: Given:- The amount that an object stretches or compresses depends on its ________…

Q: A man who weights 200lb is to be raised by a leveler extending under the man 15 in. From the…

A: Solution: Given: F1 = weight of man = 200 lb r1 = distance between fulcrum and man = 15 in r2 =…

Q: The elastic modulus of dentin is equal to elastic modulus of enamel

A:

Q: A 50-kg steel pipe 4 meter long is supported by a rope attached 1.7 m attached from one end.…

A: The mass of the rod is, m=50 kg   The length of the rod is, l=4 m   The distance of the rope from…

Q: Why does the suspended spring stretch more at the top than at the bottom?

A: The top part of the spring supports all of the spring’s weight.

Q: when a bouncy ball strikes a surface, does the surface experience inelastic deformation, or does the…

A: Inelastic deformation is the change in shape due to inelastic collision.

Q: Explain how The Leaning Tower of Pisa satisfies the principle for stability.

A: Every object has a point called center of gravity. The object can be treated as a point mass having…

Q: Why were so many vertical columns needed to support the roofs of stone buildings in ancient Egypt…

A: In ancient Egypt and Greece, the building roofs are made of with many horizontal stone slabs.

Q: Differentiate between stress and strain.

A: Stress: - It is defined as the resistive force per unit area that rigid body exerts against an…

Q: Triceps muscle 3 Biceps muscle m=25 kg cm 16 cm 38 cm Calculate the force the biceps muscle must…

A: Given : r1 = 4 cm = 0.04 m r2 = 16 cm = 0.16 m r3 = 38 cm = 0.38 m ma = 2.5 kg mb = 4 kg

Q: The structure above is in equilibrium. The weight Of object c íis 3.75 N. Find the weights Of…

A:

Q: Can two unequal forces acting at a point be in equilibrium? Can three?

A: Any two forces of unequal magnitude acting together on a body will make the body move. The body will…

Q: What does static equilibrium mean?

A:

Q: Distinguish between adhesive and cohesive forces.

A: Adhesive forces act between two dissimilar materials, but the cohesive forces act between similar…

Q: Calculate the forces that the supports A and B exert on the diving board shown in (Figure 1) when a…

A: Given that: Mass of diver: m= 53 kg r1= 1 mr2= 3 m

Q: When you bend a meterstick, one side is under tension and the other is under compression. Which side…

A: Bending of the stick is represented below.

Q: Caloulate the force applied by the biceps and the reaction force (Fr) at the joint as a result of a…

A:

Q: Distinguish between tension and compression?

A: The main difference between tension and compression is listed below.

Q: What is difference between viscosity and friction?

A: The viscosity of a fluid is a measure of its deformation by shear stress or tensile stress. Friction…

Q: Why does a rope climber pull downward on the rope to move upward?

A: Newton’s third law of motion says that, for every action, there is an equal and opposite reaction.

Q: Why doesn’t a hummingbird soar like an eagle and an eagle flap its wings like a hummingbird?

A: The wings size of a hummingbird is smaller than the wing size of an eagle, so hummingbird can flap…

Q: what happens when a concurrent force is in equilibrium

A: When more than one force is applied on the object and these forces balance each other so that the…

Q: On the basis of second condition of equilibrium.Does it matter if you push at the same height as the…

A: While opening a door, it does not matter at what height the person pushes the door. The torque…

Q: Explain elasticity using intermolecular force.

A: Step 1Intermolecular force is the sum of all the forces between two neighboring atoms.Elasticity is…

Q: A type of modulus is used for tension/compression

A: To determine  A type of modulus is used for tension/compression

Q: Two children are balanced on opposite sides of a seesaw. Ifone child leans inward toward the pivot…

A: Let m and M be the masses of children and r and R be their respective distances from the pivot…

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.