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A lab test for specific gravity, G, on two samples of lumber indicate that sample A has G= 0.4 and sample B has G= 0.9. Based on this information alone, which wood sample would you choose as a structural member for your construction project?
The hull of a boat has a volme of 150m and the total mass of the boat when empty is 8560kg. determine how much load this boat can carry without sinking in a lake.
Starting from rest, a 4.0-kg body reaches a speed of 8.0 m/s in 2.0 s. What is the net force acting on the body?
The space truss shown is supported by a ball-and-socket joint at D and by short links at A and C. Determine the support reactions and the force in each member of the space truss.
Cancer is the uncontrolled growth of abnormal cells in the body resulting in tumours that can be benign or malignant (cancerous cells). A proper treatment is necessary to fight with this serious disease.
if the settling velocity of a particle is 2.80 mm/s and the overflow rate of an up flow clarifier is 0.560 cm/s, what percent of the particles are retained in the clarifier. If the flow rate of this problem is doubled
A water sample has phenolphthalein alkalinity (PPA) of 30 mg/L as CaCO3 and total alkalinity (TA) of 84 mg/L as CaCO3. If OH alkalinity is 5.3 mg/L as CaCO3, Calculate the alkalinity due to HCO3- and CO3-2.
You heat 250 ml of tap water from 10 degree celcius to 100 degree celcius in 2 minutes using a microwave oven operating at 2.5 GHz. a). What is the wavelength of this electromagnetic radiation
A lumber company that cuts fine woods for cabinetry is evaluating if it should retain the current bleaching system or replace it with the new one. The relevant costs of each system are known or estimated.
the triangular plate ABC is supported by ball and socket joints at B and D and is held in the position shown by cables AE and CF. If the force exerted by cable AE at A is 1000N , determine the moment of the force about line joining points D and B.
Determine whether these conditions are true or false.
A tray rests on an extendible arm consisting of two steel tubes with two different outer diameters. The downward force at the tray center F0 = 1000 N. Determine the downward deflection of the tray center and the tilt angles of the tray about each ..
a soil sample is obtained by pushing a 16 in long tube into the side of a pit. the tube has an inside diameter of 3 in. and weighs 1.8 lb. The soil in the tube is trimmed so that its ends are flush with the ends of the tube.
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