COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 9, Problem 7QAP
To determine
The reason why skin acquires wrinkles as people get older
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When water freezes, it expands by about 9%. What would be the pressure increase inside your automobile's engine block
if the water in it froze? (Bulk modulus of ice is 2 x 109 N/m2)
O 1.8 x 108 N
O 1.8 x 108 Pa
2.22 x 1010 N
O 2.22 x 1010 Pa
A 40.0-kg woman balances on one heel of a pair of high-heeled shoes. If the heel is circular and has an area of 9cm2, what pressure does she exert on the floor?
A 4.0-kg object is supported by an aluminum wire of length 2.0 m and diameter 2.0 mm. How much will the wire stretch?
Chapter 9 Solutions
COLLEGE PHYSICS
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- A host pours the remnants of several of wine into a jug a party. The host then inserts a cork with a 2.00-cm diameter into the bottle, placing it in direct contact with the wine. The host is amazed when the host pounds the cork into place and the bottom of the jug (with a 14.0-cm diameter) breaks away. Calculate the extra force exerted against the bottom if he pounded the cork with a 120-N force.arrow_forwardA horizontal pipe 10.0 cm in diameter has a smooth reduction to a pipe 5.00 cm in diameter. If the pressure of the water in the larger pipe is 8.00 104 Pa and the pressure in the smaller pipe is 6.00 104 Pa, at what rate does water flow through the pipes?arrow_forwardA steel cylinder is placed on top of a brass cylinder. Each cylinder is 30 cm tall and has a diameter of 10 cm. Upon a load of 20 kg being placed on top of a steel cylinder, by how much will the length of a brass cylinder be compressed?arrow_forward
- Mercury makes an angle of 130 degrees with respect to the vertical when in contact with clean glass. How far will mercury depress in a clean, 10 micrometer-diameter glass tube if surface tension of mercury is 0.467 N/m and SG = 13.6.arrow_forwardYou have been warned to set up a ladder with its base about 1/4 of its length from the wall. However, since there are some things stored next to the wall you decide to ignore the advice and set the base of the ladder out half its length from the wall instead. The ladder is sitting on slippery old snow but It still feels safe when you start up to clear your gutters after a week of storms. After you climb on you have added your weight to the ladder. Which of these is a likely result? You go about halfway up, the bottom starts to slip away from the wall as you lean forward to hold on, the ladder rotates faster and falls down completely. You go up one rung and the base slips away from the wall. Nothing happens. It cannot slip once you are on it because your weight increases the friction. It slips a little when you first get on, so a friend adds weight to the base. Once you are near the top it is very stable and cannot slip.arrow_forwardA person who weighs 670 N is riding a 85-N mountain bike. Suppose the entire weight of the rider plus bike is supported equally by the two tires. If the gauge pressure in each tire is 5.80 x 105 Pa, what is the area of contact between each tire and the ground?arrow_forward
- QUESTION 1 When water freezes, it expands by about 9%. What would be the pressure increase inside your automobile's engine block if the water in it froze? (Bulk modulus of ice is 2 x 10° N/m2) O 1.8 x 108 N O 1.8 x 10° Pa O 222 x 1010 N O 222 x 1010 Paarrow_forwardA 50 kg girl wearing high heel shoes balances on a single heel. The heel is circular with a diameter 1.0 cm. What is the pressure exerted by the heel on the horizontal floor?arrow_forwardA 60 kg woman walking through an alley accidentally broke the heel of her left high-heeled shoes. Now the woman tries to balance on one heel of a pair of high-heeled shoes. If the heel is circular and has a radius of 0.500 cm, what pressure does she exert on the floor? ANSWER: 7.5 x 106 N/m2 (WITH FBD PLS.)arrow_forward
- A 4.5-kg, three legged stool supports a 89-kg person. If each leg of the stool has a cross-sectional diameter of 2.4 cm and the weight of the person is evenly distributed, determine the pressure exerted on the floor by each leg.arrow_forwardIf the force on the tympanic membrane (eardrum) increases by about 1.5 N above the force from atmospheric pressure, the membrane can be damaged. When you go scuba diving in the ocean, below what depth could damage to your eardrum occur? The eardrum is typically 8.2 mm in diameter.arrow_forwardSuppose a piano tuner stretches a steel piano wire 7.5 mm. The wire was originally 0.775 mm in diameter, 1.29 m long, and has a Young's modulus of 2.10 × 1011 N/m2.Calculate the force a piano tuner applies to stretch the steel piano wire in Newtons.arrow_forward
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