Stress, like pressure, is always perpendicular to a plane. True or False? a) True b) False
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Stress, like pressure, is always perpendicular to a plane. True or False?
a) True
b) False
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- 3. One of the dangers of tornados and hurricanes is the rapid drop in air pressure that is associated with such storms. Assume that the air pressure inside of a sealed house is 1.02 atm when a hurricane hits. The hurricane rapidly decreases the external air pressure to 0.910 atm. A square window in an outside wall of the house measures 2.02 m on each side. What is the magnitude of the net force (directed outwards) exerted on this window? (1 atm = 1.0135 x 105 Pa.)A horizontal segment of pipe tapers from a cross-sectional area of 44.6 cm2 to 0.500 cm2. The pressure at the larger end of the pipe is 1.30 × 105 Pa, and the speed is 0.0400 m/s. What is the pressure at the narrow end of the segment? ___Paلابد B A These four containers are filled with the same volume of water. Which has the highest pressure at the bottom? A B C
- Water (density = 1 × 103 kg/m3) flows at 15 m/s through a pipe with radius 0.04 m. This same pipe goes up to the second floor of the building, 3 m higher, and the pressure remains unchanged. What is the radius of the pipe on the second floor? Group of answer choicesYou can chew through very tough objects with your incisors because they exert a large force on the small area of a pointed tooth. What pressure in Pa can you create by exerting a force of 460 N with your tooth on an area of 1.00 mm2? in PaSuppose a piano tuner stretches a steel piano wire 5.5 mm. The wire was originally 0.825 mm in diameter, 1.27 m long, and has a Young's modulus of 2.10 × 1011 N/m2. l0 = 1.27 ml = 5.5 mmd = 0.825 mm Calculate the force a piano tuner applies to stretch the steel piano wire in Newtons. F =