What is stress in polymer? Polymers exhibit a wide range of stress-strain behaviors as shown in the figure below. For polymer materials, this peak stress is identified as the yield stress. As the material is pulled further, fracture occurs. The stress value when fracture occurs is defined as the tensile strength for polymer materials. What […]
What is the de Broglie wavelength of an electron accelerated by a voltage of 50v?
How do you calculate the concentration of dissolved oxygen in water?
How do you calculate the concentration of dissolved oxygen in water? a) If we suppose that ppm are cm^3/m^3, we can calculate oxygen concentration as: V(O2)/V(total) = (209.5+x)cm^3/10^-3m^3. b) If ppm = mg/l: m(O2)/V(total) = (209.5+x)*32/(Vm*1). What is the concentration of dissolved oxygen in water? The oxygen content of surface waters of normal salinity in […]
How do you calculate the deflection of a simply supported beam?
How do you calculate the deflection of a simply supported beam? Generally, deflection can be calculated by taking the double integral of the Bending Moment Equation, M(x) divided by EI (Young’s Modulus x Moment of Inertia). What is the deflection of a simply supported beam? Typically, the maximum deflection is limited to the beam’s span […]
What is a task involved in the design and pre-construction pathway?
What is a task involved in the design and pre-construction pathway? Which of the following is a task involved in the Design and Pre-Construction pathway? Renovating structures. Ensuring structures meet government codes. Determining the layout of the land. Planning preventative maintenance. Which of the following occupations is part of the design pre-construction career pathway? Architecture […]
What is the difference between thermal equilibrium and thermodynamic equilibrium?
What is the difference between thermal equilibrium and thermodynamic equilibrium? A thermal equilibrium exists within a system when the temperature is uniform throughout so that there is no heat transfer within the system. A system is said to be in thermodynamic equilibrium if it does not have the capacity to spontaneously change its state after […]
What do you think the penalty should be for a DUI?
What do you think the penalty should be for a DUI? A first DUI carries $390 to $1,000 in fines plus a number of “penalty assessments” that can substantially increase the amount the driver has to pay. The total can be several thousand dollars or more. Jail. It’s possible for a first offender to receive […]
What is the position of the particle when it is farthest to the right?
What is the position of the particle when it is farthest to the right? The absolute maximum of s(t) on a closed interval represents the farthest right the particle travels to on the interval. The absolute minimum of s(t) on a closed interval represents the farthest left the particle travels to on the interval. How […]
Which of the following metals would typically be used in die casting?
Which of the following metals would typically be used in die casting? The most commonly used die-cast metals are as follows: Zinc. Aluminum. Magnesium. What is made from die casting? In fact, die-cast parts can be found in many things; you are probably just unaware that they are made from die-cast metal. Locks and gears […]
How do you calculate Brinell hardness number?
How do you calculate Brinell hardness number? P = applied load in kilogram-force (kgf) D = diameter of indenter (mm) d = diameter of indentation (mm) Brinell hardness is sometimes quoted in megapascals; the Brinell hardness number is multiplied by the acceleration due to gravity, 9.80665 m/s2, to convert it to megapascals. How do you […]