Can a wall exert a normal force? In what direction would it act?

Q: Assume the breaking stress of a bone is 1.30 x 107 N/m2, the magnitude of the maximum force a…

A: Given Breaking stress of a bone =1.30x107Nm2 Average diameter of bone =d= 3cm Area of bone=πd24…

Q: When you rise from a squat while standing on bathroom scales, what happens to the reading on the…

A: Increases during rising since you are accelerating upward, you are exerting force downward…

Q: How much force would it take to break an aluminum wire that has a diameter of 0.22 cm?

A: The diameter of aluminum wire is given as d=0.22 cm

Q: The bar ABCD is fixed at A by a pin and supported by two wires as shown in fig. the bar is subjected…

A: The given figure is The figure for calculation be,   Let us consider the two-similar triangles,…

Q: P. the Wall ne Just What force - factor is he expeñencing agamst his back? e for larger on safety's…

A: (d) Given: The mass of the man is 100 kg. The radius of the typhoon is 2.4 m. The speed of the man…

Q: A vertical off-shore structure is built to withstand a maximum stress of 109 Pa. Is the structure…

A: Given : The maximum stress the structure can handle, P = 109 PaDepth of the sea, d = 3 km = 3 × 103…

Q: shaft of bone 1.2 m long. If the strain is 1.3x (10) ^(-4) when the leg supports his weight, by how…

A: The amount of length led shortened is   =strain ×length    =1.3×10^(-4)×(1.2m)=1.56×10^(-4) m

Q: Tensile stress is the same as force V applied force per cross-sectional area the strain per unit…

A: Tensile stress is force per unit area. tensile stress=applied forcecross sectional area stress has…

Q: Below a 552 N and beam length L is in equilibrium and is attached to a cable which is pulling it…

A: Let the normal reaction by the wall on the beam = R  This normal reaction will be in the horizontal…

Q: Consider an object exposed to tensile stress. When Hooke's Law is no longer obeyed (beyond…

A: Given data :  Tensile stress is applied beyond proportionality limit but with no fractures.  To find…

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: A 2×12 board is about 2.18 kg per linear foot. A 16-foot length board of Southern Yellow Pine is…

A: Given: Length density of the board: 2.18 kg per linear foot. The length of the board: 16 feet=4.88…

Q: Two springs are connected each other and suspended vertically. To the bottom one, a body of mass .2…

A: The force due to the mass  m=0.2 kg , which is the weight ,FG=mg will extend the spring system ,…

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: Below a beam of the length L is in equilibrium and is attached to a cable which is putting it…

A:

Q: A 17.0-m-high and 11.0-m-long wall and its bracing under construction are shown in the figure.…

A: The expression for the Torque due to wind force will be,

Q: African elephants are the largest land animals. They consume approximately 10% of their body weight…

A: For equilibrium Net torque and net force about center of rotation must be zero. So first we will…

Q: Problem 07: Locate the amount and position of the resultant of the loads acting on the truss shown…

A:

Q: a principle of physics states that for a relatively small deformation of an object, the displacement…

A: Deformation : Deformation is the change in the configuration of a a rigid object in response to the…

Q: What is the role of elasticity in everyday life? Give two examples to illustrate.

A: The concept of elasticity is mainly used to make manmade structures.The ropes used in cranes to lift…

Q: 14) As shown in the figure, a rod of mass m= 1 (kg) and length L=I (m) is standing between the…

A:

Q: You have been warned to  set up a ladder with its base about 1/4 of its length from the wall.…

A: Let us draw an an illustration of the given scenario:

Q: A copper wire of diameter 1.0 cm stretches 1.0% when it is used to lift a load upward with an…

A: All metal follows Hooke's law as per that stress is directly proportional to the strain.  σ = εE…

Q: A load of 54 N attached to a spring hanging vertically stretches the spring 7.5 cm. The spring is…

A: Given data: Force, F = 54N   m =7.5cm=0.075m   Amplitude, x = 10cm =0.1m

Q: For the given figure, the weight of the 9-ft bar is 5 lb. If F = 4.75, the reaction exerted by the…

A:

Q: A rope 11m long has its ends fastened to hooks on the ceiling 9m apart. A load of 500N is suspended…

A: Given: Length of rope is 11m. Distance between hooks is 9m. Load suspended is 500N dividing the rope…

Q: Before a fight, a sumo wrestler's stance is with his feet spread apart and knees bent. Explain why

A: Before a fight, a sumo wrestler's stance is with his feet spread apart and knees bent because this…

Q: A walkway suspended across a hotel lobby is supported at numerous points along its edges by a…

A: Given info: Before loading, the diameter of the steel cable is 1.27 cm and the length of the steel…

Q: wire is stretched 3 mm by a force of 150 N. Assuming the elastic limit is not exceeded, the force…

A:

Q: Express the relationship between stress and strain for non linear elastic material. (Please express…

A: Non-linear elastic material does not have a linear elastic region .i.e they cannot regain their…

Q: The 5.00 N block shown in the drawing rests on the level ground. Which face(s) experience(s) the…

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.