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

Q: Tensile load of 2 MN is applied to an Aluminium cord with original diameter of 5 mm, the measured…

A: Given: Tensile load, F = 2MN = 2 x 106 N Diameter of rod = d = 5 mm = 5 x 10-3 m Length stretched =…

Q: Bulk modulus of Elasticity is/are Is dependent on fluid’s density In independent of temperature…

A: 1. Bulk modulus is a measurement of how much volume shrinks as pressure rises. The volume will…

Q: A crowbar of length 120cm has its fulcrum at a distance of 20cm from the load. Calculate the…

A: Given:  length of bar,d = 120 cm  load arm, L = 20 cm

Q: A mass weighting 64 lbs stretches a spring 6 inches. The mass is in a medium that exerts a viscous…

A: Main

Q: Is iron necessarily heavier than cork? Explain.

A: Answer Not necessarily

Q: Consider there are two iron rods with circular and square cross sectional areas. By applying the…

A: Stress Stress is the ratio of applied force F to a cross section area - defined as "force per unit…

Q: Why a rifle barrel rifled?

A: Answer Rifling consists of spiral grooves cut into the inside of a barrel of a gun. It is a key part…

Q: Why are vertical columns not needed to support the middle of domed stadiums, such as the Houston…

A: Because tension along every part of the dome surface is parallel to the surface.

Q: A 20kg cat hangs from one end of a 6-meter board. If the fulcrum is located at the center of the…

A:

Q: What is meant by a rigid body?

A: In physics, a rigid body (also known as rigid object) is a solid body in which deformation is zero…

Q: Tension and compression occur in a partially supported horizontal beam when it sags due to gravity…

A: Answer:- Tension and compression occur in a partially supported horizontal beam when it sags due to…

Q: A bucket of water with a mass of 1.72 kg is attached to a rope that is wound around a cylinder. The…

A:

Q: Steel is more elastic than rubber. Explain.

A: Elasticity is the ability of a material to regain its shape once the deforming force is removed.

Q: If a 0.2 kg object hanging from a spring stretches it by 0.15 m, then by how much will the spring be…

A: using hooke's law Force = spring constant * elongation F = k x Therefore, mass = 0.2 kg , force = mg…

Q: held close to the suspended table-tennis ball shown in Fig. 9.1. The table-tennis ball with metal…

A: The charge developed in the metal paint on the ball is negative , when rod is held closed to it .

Q: Will water flow more easily through a wide pipe or a narrow pipe?

A: The water flows in pipe with a certain velocity and it depends on the the cross section of pipe…

Q: Write copper, steel, rubber and glass in the increasing order of their elasticity.

A: elasticity of an object or body is defined as the ability to restore its original form after it is…

Q: Consider there are two iron rods with circular and square cross sectional areas. By applying the…

A: The shape of an object is the geometrical description of the part of the space occupied by the…

Q: A uniform rod, 110 cm in length, is pivoted at the 40 cm mark. It is balanced when a…

A: Visualize the problem:

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

A:

Q: Why is the base of a cooking pan made thick and heavy?

A: Reason for thick base of cooking pan:The base of a cooking pan is generally made up of metals which…

Q: resaw is balanced when the weight of one box times its distance from the balance point is equal to…

A: As per policy i can answer only 1st. Please post the other question separately.

Q: To weigh a fish, a seaman hangs a tackle box of mass 3.5kg and a cooler of mass 5kg from the end of…

A: Write the given values of the problem- Mass of the tackle box=3.5 kg cooler of mass=5 kg

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: A load of 100 lb is hung from the middle of a rope which is stretched between two rigid walls 30 ft…

A:

Q: ⦁ Imagine that you hold a 6.0kg lead ball in your hand with your arm bent. The ball is 0.35m from…

A: Given that the value of mass of the ball and distance of the ball and distance of biceps muscle and…

Q: Why does velocity increase when water flowing in a broad pipe enters into a narrow pipe?

A: When the fluid is flowing in the pipe with large diameter the pressure energy of the fluid is more.

Q: Examine how a pair of scissors or shears cuts through apiece of cardboard. Is the name “shears”…

A: The ratio between the force and cross-sectional area is called as shear stress. It is usually deform…

Q: steel is placed on a steel incline table that has a µs o applied horizontally to the table in order…

A: Given values:- Mass of steel,(m)=2 kg ----(1) Coefficient of static friction,(μs)=0.23 ----(2)…

Q: Why are mittens warmer than gloves on a cold day? And which parts of the body are most susceptible…

A:

Q: List some factors that influence whether a rock will deform: 1. in an elastic manner, 2. in a…

A: The rock will deform into elastic manner when, the rock returns to its original shape when the…

Q: Parachutists whose chutes have failed to open have been known to survive if they land in deep snow.…

A: Given data Mass of the person, m=75 kg Velocity at which the person hits the ground, u=55 m/s Area…

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: Why do airplanes extend wing flaps that increase the area and the angle of attack of the wing during…

A:

Q: An aluminum wire is connected to a steel wire shown below. The aluminum wire has a length of 0.6m…

A: Standing wave or a stationary wave is one in which the peak amplitude remains the same at any point…

Q: A bicycle turned upside down and the front wheels is running. Where will the valve stop?

A: A bicycle turned upside down and the front wheels is running. Where will the valve stop?

Q: Why is a soft, underinflated football at sea level much firmer when it is taken to a high elevation…

A: The atmospheric pressure at high altitude is low as compared to the sea level. Thus, the relative…

Q: A lead apron is placed over the dental patient. Why?

A: Lead apron are type of protective clothing which acts as radiation shield. It is made up of a thin…

Q: Which is more likely to hurt—being stepped on by a 200-lb man wearing loafers or being stepped on by…

A: Pressure acting on a body is given by, Here, force acting is equal to weight of person.

Q: The boom of the wall crane 4m long is held at right angles to the wall by a wire that is attached to…

A: Given that the boom of the wall crane 4m long is held at right angles to the wall by a wire that is…

Q: discuss the concept of elasticity

A: Given that, Rhe concept of elasticity.

Q: What is a characteristic that is common to a steel sheet, copper wire. metal paper clip and a wooden…

A: Materials that allow electric current to flow through easily are called conductors.Whereas materials…

Q: If an axe head is a wedge, are scissors a pair of wedges? why or why not?

A:

Q: A tensile test conducted on a steel bar is used to find Select one: a. modulus of rigidity b.…

A: The tensile test is the test in which a wire is subjected to a number of different stresses and the…

Q: An upright beam supports a load of 3,000 N and 2,500 cm long. The beam is compressed 200 mm by 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.