23. A solid ball is released from rest and slides down a hillside that slopes downward at 65.0° from the horizontal. a) What minimum value must the coefficient of static friction between the hill and ball surfaces have for no slipping to occur? b) Would the coefficient of friction calculated in part (a) be sufficient to prevent a hollow ball (such as a soccer ball) from slipping? Justify your answer. c) In part (a), why did we use the coefficient of static friction and not the coefficient of kinetic friction?

Q: Which of the following gives the closest value of the magnitude of the horizontal impulse at the…

A: GivenmAB=2 kgmC=1 kgVc1=3.50 m/sVc2=1.250 m/s

Q: An insulating wall is constructed with two layers of 250 mm thick Plywood separated from each other…

A:

Q: c) Calculate the equations of internal shear force V(x) and bending moment M(x). Type the…

A:

Q: creep curve for a metal.

A: The above figure shows the typical creep curve for the metal.

Q: Simplify the block diagram in Figure into single blocks and determine the overall system transfer…

A:

Q: (a) 777777 X LAB B LBC P (b) h₁ Cross-section Y Figure Q5: (a) The boundary condition of the wooden…

A:

Q: In Figure below the pressures in A and B are the same, 100 kPa. If more water is placed in A to…

A:

Q: 4.2. Provide the design methodology of tank liquid level control. system: describe the control…

A: Given: To find: Design methodology

Q: 7. The aluminum alloy used in the extruded beam depicted in Fig. 7 has a permissible working stress…

A: Given data  The working stress = 90MPa Find the maximum permissible uniform loading

Q: b) Calculate support reactions in A and B, following the defined sign convection. Reaction forces at…

A:

Q: Determine the force in each member of the loaded truss. Explain why knowledge of the lengths of the…

A:

Q: P6. The open loop transfer function of a unity feedback system is K(s+2) G(s)= s(s+3)(s²+2s+10)…

A: Stability

Q: Which of the following statements about recrystallisation of metals are true? Select one or more:…

A: Solution: Given Data: Which of the following statements about recrystallisation of metals are true?…

Q: Which of the following conditions/factors will reduce a materials fatigue resistance: Select one or…

A: Fatigue strength is the highest stress that a material can withstand for a given number of cycles…

Q: Sketch a commercial type outdoor air-cooled condenser. Discuss the heat transfer mechanism in the…

A: The sketch of the commercial air cooled condenser along with its working are as follows:

Q: h) The figure below shows a beam supported at points A and B. The vertical force at F is 500 N and…

A: In this issue, we will determine the distance (s) necessary to balance the beam by first calculating…

Q: b M

A:

Q: a) A convergent-divergent nozzle with a given area ratio is supplied with air at a constant…

A: The mass Flow rate is constant till A At point A PoPb=0.5282 that is the critical point. Till…

Q: Determine the force in each member of the loaded truss. Make use of symmetry of the truss and of the…

A: Given data, Let RA and RE are the reactions at A and E

Q: If water enters the nozzles of a hydraulic turbine at 550 kPa. Determine the maximum exit velocity…

A: Given: P1=550kPaP2=101.3kPa

Q: A very long stainless-steel rod [k=16 W/m. C] has a square cross section 12.5 by 12.5 mm and has one…

A: In this problem we will calculate the heat lost by the rod, the heat lost from the rod takes place…

Q: The given blower is driven by 1500 RPM electrical motor. The vibration wave forms and spectrums are…

A: 1) the graph indicates that the wave form is sine wave form. Similarly, the FFT spectrum indicates…

Q: A 0.6-m³ rigid tank is filled with saturated liquid water at 170°C. A valve at the bottom of the…

A: Given data  The volume of tank (V)= 0.6 m3 Find the mass of water at initial and final

Q: Compression molding is a manufacturing process in which the molding material is preheated then…

A: Compression molding process is used to give a desired shape to the plastic with the use of high…

Q: You have been given the following test sample data following mechanical testing of 15 test pieces of…

A: The Weibull modulus is a shape parameter for the Weibull distribution model, which in this instance…

Q: Find the velocity of point B. 02 @2=1 rad/s 2 30° A 1 3 B 4 02A=4" AB=7"

A:

Q: An ideal vapor-compression refrigeration cycle that uses refrigerant-134a as its working fluid…

A: Refrigeration is the technique of keeping a low temperature in comparison to the surrounding…

Q: You have a choice between four types of candidate near-inert bioceramic for use in the manufacture…

A: Option b (Material omicron) is the correct option Because for the manufacture of a femoral head…

Q: An aircraft is flying at Mach 2 at an altitude where the temperature is 260 K, producing a sonic…

A:

Q: Computational analysis has determined that a particular design of glass ceramic component has a…

A:

Q: Consider a high-strength advanced titanium blade to be used in a bespoke engine in a test research…

A: Titanium is a hard material with very high strength, so we need a process which can process the hard…

Q: how does the following recrystallization percentage of metallic alloys after annealing is…

A: Introduction When cold-worked metal is subjected to recrystallization annealing, new grains can form…

Q: w G m B rB m w r³ = 525 mm KB = 400 mm 5 kg M = 6 N·m PA A ra = 175 mm KA = 150 mm mA = 2 kg

A:

Q: To insulate a device against a high external temperature, which of the following are practical…

A: Insulation is used to reduce the heat lost to the surrounding by using some type of material around…

Q: Liquid ammonia at -20°C (rho= 665.1 kg/m³ and μ = 2.361*10-4 kg/m*s) is flowing through a 35 m long…

A: Given data  Density = 665.1(kg/m^3) The viscosity = 2.361×10^(-4) (kg/m-s) The length of pipe = 35m…

Q: SOLVE STEP BY STEP IN DIGITAL FORMAT Calculate all reactions, draw shear and moment diagrams

A: Given

Q: A Stirling engine involves: (1) isothermal heat addition → (2) isochoric heat removal → (3)…

A:

Q: Q2. What is meant by major stresses and major levels? b An element in a plane affected by the…

A: The stress along the X-axis is σx=15000 psi The stress along the Y-axis is σy=5000 psi The shear…

Q: 1. The volume rate of flow, Q, through a pipe can be determined by the pressure drop through nozzle…

A:

Q: A full rectangular tank is 3.9m wide, 5m long, and 2.3 deep contains fluid weighting 580kN. Find the…

A:

Q: What has my professor done in part b, could you help me understand how she's changed pressure in…

A: To change the pressure head into pressure unit we apply a formula given below.

Q: Water is flowing through a pipe of 100 mm diameter under a pressure of 19.62 N/cm2 (gage) and with…

A: Given: d= 100 mmp=19.62 N/cm2v=3 m/sz=8 m

Q: Steam enters an adiabatic turbine at 8 MPa and 500°C at a rate of 3.3 kg/s and leaves at 20 kPa. If…

A:

Q: Surface tension varies greatly from substance to anot Select one: O True O False

A: Surface tension-it is a property of a fluid  by virtue of which it tries to minimizetheir free…

Q: A metal has a certain fraction f = 105 of vacancies at the atomic level at finite temperatures. If…

A: At finite temperatures, a metal with a certain fraction f of vacancies at the atomic level will have…

Q: What is the atomic packing factor for simple cubic structures and the ratio of this factor to that…

A:

Q: Fluid refers to liquids and solids. Select one: O True O False

A:

Q: An ammonia compressor has a 5 percent clearance volume and a displacement rate of 80'L/s and pumps…

A:

Q: Determine the force P required to maintain the 235-kg engine in the position for which = 28°. The…

A:

Q: Consider beam ABC of the seesaw to be a slender rod with a mass of 3kg. (Hint: Irod = mL2/12)  One…

A: Given: The mass of the slender rod, M = 3 kg The mass of the ball, m = 0.6 kg The velocity of ball,…

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.