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Determine the factored moment capacity ∅Mn of the rectangular section subjected to interior environmental exposure with an initial deformation in the concrete substrate εbi = 0.0060.
The material and geometric data of the section are: concrete, f'c = 20.68 MP a, width b = 300 mm, height h = 600 mm, reinforcement depth d = 560 mm; steel reinforcement: As = 602 mm2, fy = 413 MP a; FRP, f'fu = 2800 MP a, ε'fu= 0.017, Ef = 164000 MP a,bf = 250 mm, tf = 0.333 mm, n = 1.
Sand from a stationary hopper falls on a moving conveyor belt at the rate of 5.70 kg/s. Determine the force of friction exerted by the belt on sand
two billiard balls have velocities of 2.0 m/s and -1.0 m/s when they meet in an elastic head-on collision. What is the final velocity of the first ball after collision
A nearest-neighbor pair of Mg2+ ions are separated by a distance of square root 2 a0. Calculate the coulombic force of repulsion between the ions.
A bullet of mass 0.0016 kg moving at 499 m/s impacts a large fixed block of wood and travels 6.7 cm before coming to rest. Find the force exerted by the wood on the bullet
A motor having an efficiency of 88% operates a crane having an efficiency of 42%. With what constant speed does the crane lift a 410-kg crate of machine parts if the power supplied to the motor is 5.5 kW?
Microbiologists measure total current due to potassium ions (K +) moving through a cell membrane of a rock crab neuron cell to be 35 nA. How many ions pass through the membrane each second
A 730- boulder is raised from a quarry 149 deep by a long uniform chain having a mass of 600. What is the maximum acceleration the boulder can have and still get out of the quarry
A 36 g ball is fired horizontally with initial speed v_0 toward a 110 g ball that is hanging motionless from a 1.1 m-long string. The balls undergo a head-on, perfectly elastic collision, after which 110 g ball swings out to a maximum angle theta_..
A string with one 10-g washer on the end is attached to the rearview mirror of a car. When the car leaves an intersection, the string makes an angle of 5 with the vertical. What is the acceleration of the car?
An undamped 1.58-kg horizontal spring oscillator has a spring constant of 22.8 N/m. What is the oscillator\'s total mechanical energy
jordan is building a compound microscope using an eyepiece with a focal length of 7.50 cm and an objective with a focal
q1. express how unmet basic physiological needs of oxygen nutrition temperature and humidity threaten clients
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