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An object of density P_a, volume V_a, and weight W_a is thrown from a rowboat floating on the surface of a small pond and sinks to the bottom. The weight of the rowboat without the jettisoned object is W_b. Before the object was thrown out, the depth of the pond was h_p1, and the bottom of the boat was a distance h_b1 above the pond bottom. After the object sinks, the values of these quantities are h_p2 and h_b2. The area of the pond is A_p; that of the boat is A_b. A_b may be assumed constant, so that the volume of water displaced by the boat is A_b(h_p - h_b).
1) Derive an expression for the change in pond depth (h_p2 - h_p1) and tell if the liquid level of the pond will rise, fall, or indeterminate?
one gallon of paint(volume=3.78 x 10^ -3) covers an area of 25 m^2. what is the thickness in mm. of the paint on the wall
Derive the 3-h Snyder unit hydrograph for a 100-km^2 watershed where the main stream is 15 km long and the distance from the watershed outlet to the point on the stream nearest to the centroid of the watershed is 7 km.
How high of a signal source impedance can exist and still provide an output signal from an inverting amplifier circuit. Explain
Find the moist unit weight of sand in lb/ft^3compacted in the field at a relative density of 60%and moisture content of 10%Given Gs=2.65. Also calculate the maximum and minimum possible dry unit weights that the sand can have.
The shaft diameter is 100 mm. Calculate the largest principal stresses and maximum shear stress that will occur in the shaft.
Rod AB is bent into the shape of a circular arc and is lodged between two pegs D and E. It supports a load P at end B. Neglecting friction and the weight of the rod, determine the distance c corresponding to equilibrium when a = 43mm and R = 143mm..
Based on information provided in the survey bulletins and knowing that the landfill is located in the municipality of Duque de Caxias, on the shore of Guanabara Bay opposite Governor's Island (Galeao Airport)
derive an equation and solve for the volume V of a CSTR, operated isothermically for the second-order reaction 2R->P, where rR=-kC^2 R. Data are k=6.0 L/mol-s, CRin=0.005 mol/L, CRout=0.0005 mol/L, and Q=100 L/s.
A-Olympus Mons, a 69,000-foot-tall mountain on Mars, is the largest volcano in the solar system. Its circumference at the base is large enough to cover almost the entire state of Colorado.
acetic acid is a weak acid. Its Ka is 1.8(10^-5). For a concentration of 0.015 M, calculate the pH.
The object ABC consists of two slender rods welded together at point B. Rod AB has a mass of 1 kg and bar BC has a mass of 2 kg. Knowing the magnitude of the angular velocity of ABC is 10 rad/s when thetha is zero.
Raw primary sludge at a solids concentration of 3% is mixed with waste activated sludge at a solids concentration of 6,000 ppm. The flows are 20 and 25 gal/min, respectively. What is the resulting solids concentration?
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