Physics
7th Edition
ISBN: 9780321929013
Author: Douglas C. Giancoli
Publisher: PEARSON
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Chapter 1, Problem 32P
To determine
The length of the horizon when you are in a hot air balloon.
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43. A mass må undergoes circular
motion of radius R on a hori-
zontal frictionless table, con-
nected by a massless string
through a hole in the table to
a second mass m² (Fig. 5.33).
If m₂ is stationary, find expres-
sions for (a) the string tension
and (b) the period of the circu-
lar motion.
m2
R
m₁
FIGURE 5.33 Problem 43
CH
70. A block is projected up an incline at angle 0. It returns to its initial
position with half its initial speed. Show that the coefficient of ki-
netic friction is μk = tano.
Passage Problems
A spiral is an ice-skating position in which the skater glides on one
foot with the other foot held above hip level. It's a required element
in women's singles figure-skating competition and is related to the
arabesque performed in ballet. Figure 5.40 shows Canadian skater
Kaetlyn Osmond executing a spiral during her medal-winning perfor-
mance at the 2018 Winter Olympics in Gangneung, South Korea.
77. From the photo, you can conclude
that the skater is
a. executing a turn to her left.
b. executing a turn to her right.
c. moving in a straight line out of
the page.
78. The net force on the skater
a. points to her left.
b. points to her right.
c. is zero.
79. If the skater were to execute the same
maneuver but at higher speed, the tilt
evident in the photo would be
a. less.
b. greater.
c. unchanged.
FIGURE 5.40 Passage
Problems 77-80
80. The tilt angle 0 that the skater's body
makes with the vertical is given ap-
proximately by 0 = tan¯¹(0.5). From this you can conclude…
Chapter 1 Solutions
Physics
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Ch. 1 - Four students use different to measure the Length...Ch. 1 - Prob. 3MCQCh. 1 - How many significant figures does 1.862 + 25.2...Ch. 1 - Prob. 5MCQCh. 1 - To convert from ft2 to yd2, you should multiply by...Ch. 1 - Prob. 7MCQCh. 1 - (L2) represents the dimensions for which of the...Ch. 1 - How many significant figures do each of the...Ch. 1 - Write the following numbers in powers of 10...Ch. 1 - Write out the following numbers in full with the...Ch. 1 - The age of the universe is thought to be about 14...Ch. 1 - What is the percent uncertainly in the measurement...Ch. 1 - 6.(II) Time intervals measured with a stopwatch...Ch. 1 - Prob. 7PCh. 1 - Multiply 3.079102 m by 0.068 10-1m, taking into...Ch. 1 - What, approximately, is the percent uncertainty...Ch. 1 - What, roughly, is the percent uncertainty in the...Ch. 1 - Prob. 11PCh. 1 - Write the following as full (decimal) numbers...Ch. 1 - Express the following using the prefixes of Table...Ch. 1 - Prob. 14PCh. 1 - Prob. 15PCh. 1 - Prob. 16PCh. 1 - Prob. 17PCh. 1 - Prob. 18PCh. 1 - A light-year is the distance light travels in one...Ch. 1 - How much longer (percentage) is a one-mile race...Ch. 1 - Prob. 21PCh. 1 - (a) How many seconds are there in 1.00 year? (b)...Ch. 1 - Use Table 1-3 to estimate the total number of...Ch. 1 - A standard baseball has a circumference of...Ch. 1 - Prob. 25PCh. 1 - Estimate how many books can be shelved in a...Ch. 1 - Estimate how many hours it would take to run (at...Ch. 1 - Estimate the number of liters of water a human...Ch. 1 - Prob. 29PCh. 1 - Estimate the number of gallons of gasoline...Ch. 1 - Prob. 31PCh. 1 - Prob. 32PCh. 1 - Prob. 33PCh. 1 - Prob. 34PCh. 1 - Prob. 35PCh. 1 - What are the dimensions of density, which is mass...Ch. 1 - (II) The speed v of an object is given by the...Ch. 1 - Prob. 38PCh. 1 - Prob. 39PCh. 1 - Prob. 40GPCh. 1 - Prob. 41GPCh. 1 - Prob. 42GPCh. 1 - Prob. 43GPCh. 1 - Prob. 44GPCh. 1 - Prob. 45GPCh. 1 - Prob. 46GPCh. 1 - A Certain compact disc (CD) contains 783.216...Ch. 1 - Prob. 48GPCh. 1 - A storm dumps 1.0 cm of rain on a city 6 km wide...Ch. 1 - Prob. 50GPCh. 1 - Prob. 51GPCh. 1 - Prob. 52GPCh. 1 - Prob. 53GPCh. 1 - Prob. 54GPCh. 1 - Prob. 55GPCh. 1 - Prob. 56GPCh. 1 - Prob. 57GPCh. 1 - Prob. 58GPCh. 1 - Prob. 59GPCh. 1 - Prob. 60GPCh. 1 - Prob. 61GP
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- Frictionless surfarrow_forward71. A 2.1-kg mass is connected to a spring with spring constant 72 k = 150 N/m and unstretched length 18 cm. The two are mounted on a frictionless air table, with the free end of the spring attached to a frictionless pivot. The mass is set into circular mo- tion at 1.4 m/s. Find the radius of its path. cor moving at 77 km/h negotiat CH —what's the minimum icient of frictioarrow_forward12. Two forces act on a 3.1-kg mass that undergoes acceleration = 0.91 0.27 m/s². If one force is -1.2î – 2.5ĵ N, what's the other?arrow_forward
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