Physics
7th Edition
ISBN: 9780321929013
Author: Douglas C. Giancoli
Publisher: PEARSON
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Chapter 14, Problem 9Q
To determine
If pasta cooks faster if water boils more vigorously.
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Determine the shear and moment diagram for the beam shown in Fig.1.
A
2 N/m
10 N
8 N
6 m
B
4m
Fig.1
40 Nm
Steps:
1) Determine the reactions at the fixed support (RA and MA) (illustrated
in Fig 1.1)
2) Draw the free body diagram on the first imaginary cut (fig. 1.2), and
determine V and M.
3) Draw the free body diagram on the second imaginary cut (fig. 1.3),
and determine V and M.
4) Draw the shear and moment diagram
Considering the cross-sectional area shown in Fig.2:
1. Determine the coordinate y of the centroid G (0, ỹ).
2. Determine the moment of inertia (I).
3. Determine the moment of inertia (Ir) (with r passing through G and
r//x (// parallel).
4 cm
28 cm
G3+
G
4 cm
y
12 cm
4 cm
24 cm
x
I need help understanding 7.
Chapter 14 Solutions
Physics
Ch. 14 - Prob. 1OQCh. 14 - Prob. 1QCh. 14 - Prob. 2QCh. 14 - (a) If two objects of different temperatures are...Ch. 14 - In warm regions where tropical plants grow but the...Ch. 14 - Prob. 5QCh. 14 - Prob. 6QCh. 14 - Prob. 7QCh. 14 - Prob. 8QCh. 14 - Prob. 9Q
Ch. 14 - Prob. 10QCh. 14 - 11. Explorers on failed Arctic expeditions have...Ch. 14 - Prob. 12QCh. 14 - Prob. 13QCh. 14 - Prob. 14QCh. 14 - Prob. 15QCh. 14 - Prob. 16QCh. 14 - Prob. 17QCh. 14 - Prob. 18QCh. 14 - Prob. 19QCh. 14 - Prob. 20QCh. 14 - Prob. 21QCh. 14 - A premature baby in an incubator can be...Ch. 14 - Prob. 23QCh. 14 - Prob. 24QCh. 14 - Prob. 25QCh. 14 - 26. The Earth cools off at night much more quickly...Ch. 14 - Prob. 27QCh. 14 - Prob. 28QCh. 14 - Prob. 29QCh. 14 - Prob. 1MCQCh. 14 - Both beakers A and B in Fig. 14-15 [ contain a...Ch. 14 - 3. For objects at thermal equilibrium, which of...Ch. 14 - Prob. 4MCQCh. 14 - Prob. 5MCQCh. 14 - Prob. 6MCQCh. 14 - Prob. 7MCQCh. 14 - Prob. 8MCQCh. 14 - Prob. 9MCQCh. 14 - Prob. 10MCQCh. 14 - Prob. 11MCQCh. 14 - Prob. 12MCQCh. 14 - To what temperature will 8200 J of heat raise 3.0...Ch. 14 - How much heat (in joules) is required to raise the...Ch. 14 - Prob. 3PCh. 14 - An average active person consumes about 2500 Cal a...Ch. 14 - A British thermal unit (Btu) is a unit of heat in...Ch. 14 - How many joules and kilocalories are generated...Ch. 14 - A water heater can generate 32,000 kJ/h. How much...Ch. 14 - Prob. 8PCh. 14 - An automobile cooling system holds 18 L of water....Ch. 14 - What is the specific heat of a metal substance if...Ch. 14 - (a) How much energy is required to bring a 1.0-L...Ch. 14 - Prob. 12PCh. 14 - How long does it take a 750-W coffeepot to bring...Ch. 14 - 14. (II) What will be the equilibrium temperature...Ch. 14 - A 31.5-g glass thermometer reads 23.6°C before it...Ch. 14 - A 0.40-kg iron horseshoe, just forged and very hot...Ch. 14 - Prob. 17PCh. 14 - The heat capacity, C, ofan object is defined as...Ch. 14 - Prob. 19PCh. 14 - Prob. 20PCh. 14 - Prob. 21PCh. 14 - Estimate the Calorie content of 65 g of candy from...Ch. 14 - Prob. 23PCh. 14 - If 3.40 x 105 J of energy is supplied to a...Ch. 14 - How much heat is needed to melt 23.50 kg of silver...Ch. 14 - Prob. 26PCh. 14 - What mass of steam at 100°C must be added to 1.00...Ch. 14 - Prob. 28PCh. 14 - Prob. 29PCh. 14 - Prob. 30PCh. 14 - Prob. 31PCh. 14 - Prob. 32PCh. 14 - Prob. 33PCh. 14 - A cube of ice is taken from the freezer at -8.5°C...Ch. 14 - Prob. 35PCh. 14 - Prob. 36PCh. 14 - Prob. 37PCh. 14 - Prob. 38PCh. 14 - 39. How long does it take the Sun to melt a block...Ch. 14 - Prob. 40PCh. 14 - Two rooms, each a cube 4.0 m per side, share a...Ch. 14 - Prob. 42PCh. 14 - Approximately how long should it take 8.2 kg of...Ch. 14 - Prob. 44PCh. 14 - Suppose the insulating qualities of the wall of a...Ch. 14 - Prob. 46GPCh. 14 - (a) Estimate the total power radiated into space...Ch. 14 - Prob. 48GPCh. 14 - Prob. 49GPCh. 14 - A mountain climber wears a goose-down jacket 3.5...Ch. 14 - Prob. 51GPCh. 14 - Prob. 52GPCh. 14 - Prob. 53GPCh. 14 - Prob. 54GPCh. 14 - Prob. 55GPCh. 14 - Prob. 56GPCh. 14 - Prob. 57GPCh. 14 - Prob. 58GPCh. 14 - Prob. 59GPCh. 14 - Prob. 60GPCh. 14 - Prob. 61GPCh. 14 - Prob. 62GPCh. 14 - Prob. 63GPCh. 14 - Prob. 64GPCh. 14 - A leaf of area 40 cm2and mass 4.5 x 10-4kg...Ch. 14 - Prob. 66GPCh. 14 - Prob. 67GPCh. 14 - Prob. 68GP
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- The stress-strain diagram for a steel alloy is given in fig. 3. Determine the modulus of elasticity (E). σ (ksi) 40 30 20 10 0 0 0.0005 0.001 0.0015 0.002 0.0025 0.0030.0035 Earrow_forwardA Van de Graff generator, if the metal sphere on the Van de Graff has a charge of 0.14 Coulombs and the person has a mass of 62 kg, how much excess charge would the person need in order to levitate at a distance 25 cm from the center of the charged metal sphere? Assume you can treat both the person and the metal sphere as point charges a distance 25 cm from each other using Coulomb's Law to calculate the electrical force. Give your answer as the number of Coulombsarrow_forwardPlease help me answer the following question. I am having trouble understanding the directions of the things the question is asking for. Please include a detailed explanation and possibly drawings of the directions of Bsource, Binduced, and Iinduced.arrow_forward
- 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 43arrow_forwardCH 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.arrow_forwardPassage 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…arrow_forward
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