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a particle p moves along the spiral path r=(10/theta)ft, where theta is in radians. If it maintains a constant speed v=20 ft/sec, determine Vr and V Theta as functions of theta and evaluate each at theta =1 rad
To remove a nail, a small block of wood is placed under a crowbar, and a horizontal force P is applied as shown. Knowing that the maximum vertical force needed to extract the nail is 2600 N and that the horizontal force P is not to exceed 290 N, d..
A variable-order reaction A-->B has the following rate expression: R(a) = -kC(a)/(K+C(a)) where k = 5mg/L-hr and K=40mg/L The reaction is to take place in a batch reactor. The initial concentration is 450 mg/L
given data of water softened by excess lime treatment, sketch a meq/l, calculate the softening chemicals required in pounds per million gallons, and draw a bar graph for the softened water after re-carbonation and filtration
If the amount of heat transfer in the HE unit is 2460 kJ per kg of steam, what is the magnitude of shaft work obtained from the turbine in kW?
Two box culverts each is 0.61 m by 0.61 m and has n = 0.013, Ke = 0.05, Cd = 0.85, L = 30 m, So = 0.7%, and HW = 1.5 m. a. What is the design flow capacity for free outlet condition b. What is the design flow capacity for tailwater of TW = 1 m
What is the velocity head expressed in atmospheres for a rapid filter operated at a surface loading rate of 475 m/d when the local porosity is 0.40?
determine the total dead load, per foot of length, each beam must support.
Determine the degree of saturation of a sample of soil given that its maximum dry unit weight is 18 kN/m^3 and its optimum moisture content is 12.1%. Assume the Specific Gravity of soil is 2.65.
Find the length of the studs in a rake wall with a 5:12 pitch, a half span of 9'4", 16" OC and a base height of 7'3".
assume hydrostatic uplift varies uniformly from full hydrostatic head at the heel of the dam to zero at the toe. consider 1m length of dam.
Twenty years of annual maximum rainfall depths are given below. Determine the rainfall depths to be used for storm structure design for the following annual return periods: 2, 5, 10, 25, 50, & 100 year.
Determine whether the block shown is in equilibrium and find the magnitude and direction of the friction force when theta=30 and P=150N
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