If you quadruple the area over which a constant force acts, the pressure increas

Question

If you quadruple the area over which a constant force acts, the pressure increases two-fold. decreases to one-half. increases four-fold. Decreases to one-fourth The deep end of a diving pool in 5.5 m. What's the gauge pressure (ignore atmosphere) at the bottom of the deep end of this 5, 500 Pa 53, 900 Pa 53.9 Pa 5, 390,000 Pa Blocks a, b, and c ate all the same size Which experiences the largest buoyant force? Blocks a Block b Block c AH have the same buoyant force. Blocks a and c have the same buoyant force, but the buoyant force on block b is different. The speed of water through a pipe of radius 0.020 m is 4.0 m/s. If the pipe then narrows to a radius of 0.015 m, how fast does the water now move? 7.1 m/s 5.3 m/s 3.0 m/s 9.0 m/s A shown m the figure, water (density 1000kg/m) is following a pipeline 1 the water speed is 5.90m/s point 2 is 5.20 m above point 1. The cross sectional area of the pipe is 0.0800 m^2 at point 1 and 0.02000 m^2 at point 2 so that the speed of the water at point 2 is 23.6 m/s what is the pressure different (P_1 - P_2__) 1 and 2 treat the water as an ideal incompressible fluid. 59, 800 Pa 312,000 Pa 329,000 Pa 413,000 Pa the average body temperature for a pangolin is about 35 degree C what is that in Kelvin? 67 K 238 K 308 K 340 K copper rod 1 is 10.000 cm long, while copper rod 2 is 20.000 cm long both are heated by 20 degree C after heating which rod has undergone the greatest change in length Rod 1 Rod 2 same change in length for both it depends on the cross-sectional area of the rods

Explanation / Answer

Q. 39 P = F/A, new pressure = F/ 4A , new pressure = old pressure/ 4

option d

Q 40: gauge pressure = rho gh = ( 1000) ( 9.8) ( 5.5) ( where teh density of water = 1000 kg/m^3)

= 53900 Pa ( option b)

Q. 41: option d ( the buoyant force depends upon the density, gravity and volume)

Q. 42 :

equation of continuity

v1 ( A1) = v2 A2

4 ( pi 0.020^2 ) = v2 ( pi x 0.015^2)

v2= 7.1 m/s ( option A)

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