Physics (5th Edition)
5th Edition
ISBN: 9780321976444
Author: James S. Walker
Publisher: PEARSON
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Chapter 1, Problem 2PCE
BIO The Thickness of Hair A human hair has a thickness of about 85 μm. What is this in (a) meters and (b) millimeters?
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Physics (5th Edition)
Ch. 1.1 - The laws of physics apply to which of the...Ch. 1.2 - Rank the following lengths (A, B, C, and D) in...Ch. 1.3 - Give the dimensions of each of the following...Ch. 1.4 - Rank the following numbers in order of increasing...Ch. 1.5 - To convert a length of 6 ft to its equivalent in...Ch. 1.6 - Give an order-of-magnitude estimate for the speed...Ch. 1.7 - (a) Can two cars have the same speed but different...Ch. 1 - Can dimensional analysis determine whether the...Ch. 1 - If a distance d has units of meters, and a time T...Ch. 1 - Is it possible for two quantities to (a) have the...
Ch. 1 - The frequency of a pendulum is the number of...Ch. 1 - Albert runs 34 m to the right in 10 s. Isaac runs...Ch. 1 - Give an order-of-magnitude estimate for the time...Ch. 1 - Give an order-of-magnitude estimate for the length...Ch. 1 - The Hunger Games The movie The Hunger Games...Ch. 1 - BIO The Thickness of Hair A human hair has a...Ch. 1 - The speed of light in a vacuum is approximately...Ch. 1 - A Fast Computer IBM has a computer it calls the...Ch. 1 - Which of the following equations are dimensionally...Ch. 1 - Which of the following quantities have the...Ch. 1 - Which of the following quantities have the...Ch. 1 - Which of the following quantities have the...Ch. 1 - Velocity is related to acceleration and distance...Ch. 1 - Acceleration is related to distance and time by...Ch. 1 - The time t required for an object to fall from...Ch. 1 - Newtons second law (to be discussed in Chapter 5)...Ch. 1 - The time T required for one complete oscillation...Ch. 1 - The speed of light to five significant figures is...Ch. 1 - A parking lot is 124.3 m long and 41.06 m wide....Ch. 1 - On a fishing trip you catch a 2.77-lb bass, a...Ch. 1 - How many significant figures are there in (a)...Ch. 1 - What is the area of a circle of radius (a) 11.37 m...Ch. 1 - The first several digits of , the ratio of the...Ch. 1 - Rank the following speeds in order of increasing...Ch. 1 - The Ark of the Covenant is described as a chest of...Ch. 1 - A car drives on a highway with a speed of 68 mi/h....Ch. 1 - Angel Falls Water going over Angel Falls, in...Ch. 1 - An electronic advertising sign repeats a message...Ch. 1 - BIO Blue Whales The blue whale (Balaenoptera...Ch. 1 - The Star of Africa The Star of Africa, a diamond...Ch. 1 - BIO Woodpecker Impact When red-headed woodpeckers...Ch. 1 - Predict/Calculate Many highways have a speed limit...Ch. 1 - BIO Mantis Shrimp Peacock mantis shrimps...Ch. 1 - A Jiffy The American physical chemist Gilbert...Ch. 1 - The Mutchkin and the Noggin (a) A mutchkin is a...Ch. 1 - Suppose 1.0 cubic meter of oil is spilled into the...Ch. 1 - The acceleration of gravity is approximately 9.81...Ch. 1 - BIO Squid Nerve Impulses Nerve impulses in giant...Ch. 1 - Give a ballpark estimate of the number of seats in...Ch. 1 - Estimate the speed at which your hair grows. Give...Ch. 1 - Milk is often sold by the gallon in plastic...Ch. 1 - New York is roughly 3000 miles from Seattle. When...Ch. 1 - Which of the following equations are dimensionally...Ch. 1 - Which of the following quantities have the...Ch. 1 - Prob. 41GPCh. 1 - Glacial Speed On June 9, 1983, the lower part of...Ch. 1 - One liter of pure gold weighs 42.5 lb. If you...Ch. 1 - What is the speed in miles per second or a beam or...Ch. 1 - BIO Rattlesnake Frequency A timber rattlesnake...Ch. 1 - BIO A single human red blood cell has a mass of...Ch. 1 - BIO Com Growth Sweet corn plants can grow 4.1 cm...Ch. 1 - BIO Mosquito Courtship Male mosquitoes in the mood...Ch. 1 - Predict/Calcuiate A Porsche sports car can...Ch. 1 - A Speeding Bullet The fastest commercially...Ch. 1 - BIO Human Nerve Fibers Type A nerve fibers in...Ch. 1 - Bio Brain Growth The mass of a newborn baby's...Ch. 1 - The Huygens Probe MASAs Cassini mission to Saturn...Ch. 1 - BIO Spin-Dry Dragonflies Some dragonflies are...Ch. 1 - Acceleration is related to velocity and time by...Ch. 1 - The period T of a simple pendulum is the amount of...Ch. 1 - Driving along a crowded freeway, you notice that...Ch. 1 - Prob. 58PPCh. 1 - Prob. 59PPCh. 1 - Prob. 60PPCh. 1 - Prob. 61PP
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- How many significant figures does each number have? If the number is exact or if the number of significant figures is ambiguous, explain. a. 12 in the formula r12d, where r is radius and d is diameter b. 105 c. 150 d. 1.50 102 e. 1.5 102 f. 0.15 103arrow_forwardA surveyor measures the distance across a straight river by the following method (Fig. P1.6). Starting directly across from a tree on the opposite bank, she walks d = 100 m along the riverbank to establish a baseline. Then she sights across to the tree. The angle from her baseline to the tree is 0 = 35.0. How wide is the river? Figure P1.6arrow_forwardA popular saying is Give him an inch, and hell take a mile. What would be the equivalent saying using comparable metric units?arrow_forward
- In general, when a derived unit becomes complicated (involves too many standard units), what is done?arrow_forwardThe Hoover Dam Bridge connecting Arizona and Nevada opened in October 2010 ( Fig. 1.18). It is the highest and longest arched concrete bridge in the Western Hemisphere, rising 890 ft above the Colorado River and extending 1900 ft in length. What are these dimensions in meters? Figure 1.18 High and Wide An aerial view of the new four-lane Hoover Dam Bridge between Arizona and Nevada with the Colorado River beneath (as seen from behind the dam). See Exercise 16.arrow_forward(a) Estimate the number of times your heart beats in a month, (b) Estimate the number of human heartbeats in an average lifetime.arrow_forward
- Use the rules for significant figures to find the answer to the addition problem 21.4 + 15 + 17.17 + 4.003. (See Section 1.4).arrow_forwardIf you live in the United States, you probably know your height in feet and inches. In other countries, metric units are commonly used for measuring such quantities. First, find your height in inches. Then determine your height in a. centimetens and b. metersarrow_forwardFor the triangle shown in Figure P1.45, what are (a) the length of the unknown side, (b) the tangent of , and (c) the sine of ? Figure P1.45arrow_forward
- (a) Suppose the displacement of an object is related to time according to the expression x = Bt2. What are the dimensions of B? (b) A displacement is related to time as x = A sin (2ft), where A and f are constants. Find the dimensions of A. Hint: A trigonometric function appearing in an equation must be dimensionless.arrow_forwardA generation is about one-third of a lifetime. Approximately how many generations have passed since the year 0 AD?arrow_forwardA block of gold has length 5.62 cm. width 6.35 cm, and height 2.78 cm. (a) Calculate the length times the width and round the answer to the appropriate number of significant figures. (b) Now multiply the rounded result of part (a) by the height and again round, obtaining the volume. (c) Repeat the process, first finding the width limes the height, founding it, and then obtaining the volume by multiplying by the length. (d) Explain why the answers dont agree in the third significant figure.arrow_forward
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