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During a hot air balloon race one specific balloon, initially at rest, accelerate vertically upward at a constant rate of a=4.5 ft/s^2 when t0=42 s from the ground the surface, which is at an altitude above mean sea level of s0=3750 ft. When the balloon reaches an altitude of s=3850 ft the pilot drops a sandbag. Compute
a)speed of balloon (and sandbag) just before the sandbag is released at s=3850 ft;
b)the time, t when the sandbag is released;
c) maximum altitude reached by the sandbag
d) the speed of the sandbags just as it hits the ground (s=3750ft)
The true bearing of the line a-b is S 88*50' W, the magnetic bearing of the line d-c is N 89*45' E. What is the magnetic declination
A liquid has the peculiar property that its mass density increases linearly with depth according to the expression p = p_water (1+0.01d) where d is the depth below the liquid surface in meters.
A HEPA (high efficiency particulate air) filter is monitored periodically for replacement. Specifications state that if the pressure drop across the filter exceeds 1 inch of water, the filter should be replaced.
Reservoir A (water surface elevation = 1300 ft) is connected to reservoir B (water surface elevation=250 ft) by 6,000 ft of 14 inch diameter cast iron pipe (e = 0.005 ft. Neglecting all minor losses
A survey distance of 369.98 ft was recorded when the field temperatures was 100 degreesF. What is the distance, corrected for temperatures
A temporary diversion has been constructed on a highway of +4 percent gradient due to major repairs that are being undertaken on a bridge. The maximum speed allowed on the diversion is 10 mph
a solid wooden cube (.5*.5*.5 m^3) is floating in water and 0.2 of the cube extends above the water surface. Determine the specific weight of the wood.
A supervisor is sitting at her desk illuminated by a 180 candela source 3 feet above it. She is writing with green ink (reflectance=30%) on a yellow note pad (reflectance=60%). What is the illumination on the note pad
A 20,000 gal. capacity tank contains 8,000 gals. ofwater/solids mixture at a density of 12 pounds per gal.(ppg). Fresh water (8.34 ppg) is added at a rate of 10 gallons per minute(gpm).
a water main is used to refill an elevated storage tank during the night. a 100 ft long, 12 in steel pipe (ks=.06 mm) connects to the booster pump that provides a pressure of 75 psig at the pump outlet
If, on 8/1/2019, 3-year municipal bonds with an AA- rating and a coupon rate of 6.50% (payable semiannually) are selling for $100.00, what would be the fair market value of the 300 Whittier bonds (not including the 8/1/2019 coupon payment)
beam is 24 inch deep, the steel stirrup used is number 4,a 1 1/2 inch. concrete cover on both sides. Sketch how you will place the bars and calculate the location of the effective depth.
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