Physics, Books a la Carte Edition (5th Edition)
5th Edition
ISBN: 9780134020853
Author: James S. Walker
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 15, Problem 108PP
To determine
The comment that is most appropriate for the case when the height is
− 0.5 H
.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
P3. After a particularly cold night, Alice leaves a tub of water outside. You may consider
the ground and air to have temperatures of T. = -10°C and T = 10°C respectively. How
thick is the layer of ice that forms at the bottom of the tub of water, after the tub has been
left outside for a long time? The tub of water initially has a layer of water of thickness
họ = 10 cm. You may assume that the ground and air remain at a constant temperature
throughout, and that the side lengths of the tub a, b > ho, i.e. the heat conduction is one-
dimensional. Density of ice and water are Pice = 920 kg/m³ and Pw = 1000 kg/m³. Ice and
water have thermal conductivities of kice = 2.22 WK-1m-1 and kiw = 0.556 W K-1m-1.
d) Answer the question shown in the image
A muggle at NYU College finds the magic wand of a student at NYU's sister school, Hogwarts School of Witchcraft and Wizardry. She decides to use physics to figure out how to wield the wand. The student measures the wand to have total mass M and length L and draws a sketch of the wand below. She realizes that the wand is constructed to have an unusual mass density, which increases linearly from the lighterleft side (x = 0) to the heavier right side (x = L).
1. If the student wanted to balance the wand horizontally on the tip of her finger, under which point on the sketch should she place her finger?
2. If the student tries to spin the wand perpendicular to its axis with one of these points chosen as the pivot, around which point will the rotational inertia be the greatest?
3. If the student wants to wave the wand around as easily as possible, should they grasp it at the left end or the right end?
4. To perform a particular spell, the student finds they need to flick the want by a…
Chapter 15 Solutions
Physics, Books a la Carte Edition (5th Edition)
Ch. 15.1 - Prob. 1EYUCh. 15.2 - A force F acts on a circular area of radius r....Ch. 15.3 - Is the increase in pressure from the surface of...Ch. 15.4 - Is the buoyant force exerted on a cubical block of...Ch. 15.5 - A cup is filled to the brim with water. Floating...Ch. 15.6 - Water flows with a speed V through a pipe. If the...Ch. 15.7 - Water flows through a pipe with a varying...Ch. 15.8 - Prob. 8EYUCh. 15.9 - Which pipe requires a greater pressure difference...Ch. 15 - Suppose you drink a liquid through a straw....
Ch. 15 - Considering your answer to the previous question,...Ch. 15 - Prob. 3CQCh. 15 - What holds a suction cup in place?Ch. 15 - Suppose a force of 400 N is required to push the...Ch. 15 - Why is it more practical to use mercury in the...Ch. 15 - An objects density can be determined by first...Ch. 15 - How does a balloonist control the vertical motion...Ch. 15 - Why is it possible for people to float without...Ch. 15 - Prob. 10CQCh. 15 - One day, while snorkeling near the surface of a...Ch. 15 - Since metal is more dense than water, how is it...Ch. 15 - A sheet of water passing over a waterfall is...Ch. 15 - It is a common observation that smoke rises more...Ch. 15 - Prob. 15CQCh. 15 - If you have a hair dryer and a Ping Pong ball at...Ch. 15 - Prob. 1PCECh. 15 - What weight of water is required to fill a...Ch. 15 - You buy a gold ring at a pawn shop. The ring has a...Ch. 15 - A cube of metal has a mass of 0.347 kg and...Ch. 15 - What is the downward force exerted by the...Ch. 15 - Prob. 6PCECh. 15 - A 71-kg person sits on a 3.9-kg chair. Each leg of...Ch. 15 - To prevent damage to floors (and to increase...Ch. 15 - Suppose that when you ride on your 7.85-kg bike...Ch. 15 - Shock Wave Pressure On February 15, 2013, a...Ch. 15 - Predict/Calculate The weight of your 1420-kg car...Ch. 15 - Two drinking glasses, 1 and 2, are filled with...Ch. 15 - Figure 15-39 shows four containers, each filled...Ch. 15 - Water in the lake behind Hoover Dam is 221 m deep....Ch. 15 - In a classroom demonstration, the pressure inside...Ch. 15 - As a storm front moves in, you notice that the...Ch. 15 - Prob. 17PCECh. 15 - A circular wine barrel 75 cm in diameter will...Ch. 15 - A cylindrical container with a cross-sectional...Ch. 15 - Prob. 20PCECh. 15 - Predict/Calculate A water storage tower is filled...Ch. 15 - Predict/Calculate You step into an elevator...Ch. 15 - Suppose you pour water into a container until it...Ch. 15 - Referring to Example 15-8, suppose that some...Ch. 15 - Prob. 25PCECh. 15 - BIO Predict/Calculate The patient in Figure 15-41...Ch. 15 - A cylindrical container 1.0 m tall contains...Ch. 15 - Prob. 28PCECh. 15 - Lead is more dense than aluminum. (a) Is the...Ch. 15 - A fish adjusts its buoyancy to hover in one place...Ch. 15 - A raft is 3.7 m wide and 6.1 m long. When a horse...Ch. 15 - Prob. 32PCECh. 15 - Prob. 33PCECh. 15 - A 3.2-kg balloon is filled with helium (density =...Ch. 15 - A hot-air balloon plus cargo has a mass of 312 kg...Ch. 15 - In the lab you place a beaker that is half full of...Ch. 15 - Predict/Explain A block of wood has a steel ball...Ch. 15 - Predict/Explain In the preceding problem, suppose...Ch. 15 - Measuring Density with a Hydrometer A hydrometer,...Ch. 15 - Predict/Explain Referring to Example 15-12,...Ch. 15 - On a planet in a different solar system the...Ch. 15 - An air mattress is 2.3 m long, 0.66 m wide, and 14...Ch. 15 - A solid block is attached to a spring scale. When...Ch. 15 - Prob. 44PCECh. 15 - BIO A person weighs 756 N in air and has a...Ch. 15 - Predict/Calculate A log floats in a river with...Ch. 15 - A person with a mass of 78 kg and a volume of...Ch. 15 - Predict/Calculate A block of wood floats on water....Ch. 15 - A piece of lead has the shape of a hockey puck,...Ch. 15 - Predict/Calculate A lead weight with a volume of...Ch. 15 - To water the yard, you use a hose with a diameter...Ch. 15 - Water flows through a pipe with a speed of 2.4...Ch. 15 - To fill a childs inflatable wading pool, you use a...Ch. 15 - Prob. 54PCECh. 15 - Prob. 55PCECh. 15 - Prob. 56PCECh. 15 - A river narrows at a rapids from a width of 12 m...Ch. 15 - Prob. 58PCECh. 15 - BIO Plaque in an Artery The buildup of plaque on...Ch. 15 - A horizontal pipe contains water at a pressure of...Ch. 15 - Unfiltered olive oil must flow at a minimum speed...Ch. 15 - Prob. 62PCECh. 15 - Predict/Calculate Water flows through a horizontal...Ch. 15 - A garden hose is attached to a water faucet on one...Ch. 15 - A water tank springs a leak. Find the speed of...Ch. 15 - (a) Find the pressure difference on an airplane...Ch. 15 - On a vacation flight, you look out the window of...Ch. 15 - Prob. 68PCECh. 15 - Predict/Calculate During a thunderstorm, winds...Ch. 15 - A garden hose with a diameter of 1.6 cm has water...Ch. 15 - Prob. 71PCECh. 15 - BIO Vasodilation When the body requires an...Ch. 15 - BIO (a) Find the volume of blood that flows per...Ch. 15 - BIO An Occlusion in an Artery Suppose an occlusion...Ch. 15 - Motor Oil The viscosity of 5W-30 motor oil changes...Ch. 15 - Prob. 76PCECh. 15 - Prob. 77GPCh. 15 - CE Predict/Explain A person floats in a boat in a...Ch. 15 - CE A person floats in a boat in a small backyard...Ch. 15 - CE The three identical containers in Figure 15-46...Ch. 15 - Prob. 81GPCh. 15 - A water main broke on Lake Shore Drive in Chicago...Ch. 15 - Prob. 83GPCh. 15 - BIO Power Output of the Heart The power output of...Ch. 15 - A solid block is suspended from a spring scale....Ch. 15 - A wooden block with a density of 710 kg/m3 and a...Ch. 15 - Predict/Calculate Floating a Ball and Block A...Ch. 15 - The Depth of the Atmosphere Evangelista Torricelli...Ch. 15 - The Hydrostatic Paradox I Consider the lightweight...Ch. 15 - The Hydrostatic Paradox II Consider the two...Ch. 15 - Predict/Calculate A backyard swimming pool is...Ch. 15 - A prospector finds a solid rock composed of...Ch. 15 - Predict/Calculate (a) If the tension in the string...Ch. 15 - Prob. 94GPCh. 15 - Prob. 95GPCh. 15 - Prob. 96GPCh. 15 - BIO A person weighs 685 N in air but only 497 N...Ch. 15 - Thunderstorm Outflow Rain-cooled air near the core...Ch. 15 - A horizontal pipe carries oil whose coefficient of...Ch. 15 - BIO A patient is given an injection with a...Ch. 15 - Going Over Like a Mythbuster Lead Balloon On one...Ch. 15 - A round wooden log with a diameter of 73 cm floats...Ch. 15 - Figure 15-52 Problem 103 103. The hollow,...Ch. 15 - A geode is a hollow rock with a solid shell and an...Ch. 15 - A tank of water filled to a depth d has a hole in...Ch. 15 - The water tank in Figure 15-53 is open to the...Ch. 15 - Prob. 107PPCh. 15 - Prob. 108PPCh. 15 - Doughnuts are cooked by dropping the dough into...Ch. 15 - Prob. 110PPCh. 15 - Predict/Calculate Referring to Example 15-8...Ch. 15 - Referring to Example 15-8 Find the height...Ch. 15 - Referring to Example 15-24 (a) Find the height H...Ch. 15 - Prob. 116PP
Knowledge Booster
Similar questions
- 5- A student team is to design a human-powered submarine for a design competition. The overall length of the prototype submarine is 4.85 m, and its student designers hope that it can travel fully submerged through water at 0.550 m/s. The water is freshwater (a lake) at T = 15°C. The design team builds a one-fifth scale model to test in their university's wind tunnel. A shield surrounds the drag balance strut so that the aerodynamic drag of the strut itself does not influence the measured drag. The air in the wind tunnel is at 25°C and at one standard atmosphere pressure. At what air speed do they need to run the wind tunnel in order to achieve similarity? V Po P Wind tunnel test section Model Shield FD Drag balance - Strutarrow_forwardAt 1:00 PM, Sally puts into a refrigerator a can of beer that has been sitting in a room temperature 70°F. The temperature in the refrigerator is 40°F. Fifteen minutes later the temperature of the beer has fallen to 60°F. At some later time, Sally removes the beer from the refrigerator to the room, where at 2:00 PM the temperature of the beer is 60°F. At what time did Sally remove the beer from the refrigerator?arrow_forwardThe water is smooth and continuous. Water droplets cling to your skin, and your skin temperature is cooler? Explain these observations based on the properties of waterarrow_forward
- How does temperature affect the time measured by a pendulum clock? More precisely, consider a clock that uses a simple pendulum. The pendulum consists of a thin metal rod of length l. Recall that the angular frequency of a simple pendulum is w = g/l. Suppose on a hot day, the temperature is considerably above “average." How does the increased temperature affect the clock? a) The clock runs slow. So it reports a time behind actual time. b) The clock runs fast. So it reports a time ahead of actual time. c) The clock is not affected by the temperature. d) The answer depends on the mass of the simple pendulum.arrow_forwardA 17 cm radius air duct is used to replenish the air of a room 8.8m•5.0m•3.8m every 15 mins. How fast does the air flow in the duct?arrow_forward*10. D A cylindrical glass of water (H;O) has a radius of 4.50 cm and a height of 12.0 cm. The density of water is 1.00 g/cm?. How many moles of water molecules are contained in the glass?arrow_forward
- When boarding an airplane, you bring a bag of chips (or any other item packaged in an airtight foil package) and, while you are in flight, you notice that the bag puffs up. Explain why this happens.arrow_forwardWater is streaming downward from a faucet opening with an area of 3.0 x 10-5 m². It leaves the faucet with a speed of 5.0 m/s. What is the cross- sectional area of the steam 0.50 m below the faucet? 0.000020 square meters 0.000025 square meters 0.000035 square meters O 0.000015 square meters 0.000030 square metersarrow_forwardTwo objects of different temperatures are held so that they are in thermal contact with each other. Which situation best describes the scenario? a.hot object transfers heat to cold object/cold object heats up/heat transferred via convection b.cold object transfers heat to hot object/cold object heats up/heat transferred via conduction c.hot object transfers heat to cold object/cold object heats up/heat transferred via conduction d.hot object transfers heat to cold object/cold object cools down/heat transferred via conductionarrow_forward
- Which one of the following scenarios causes Q to be negative? A placing ice cubes in a glass an engine propelling a car an air conditioner pushing heat to the outside using a lever to move a rockarrow_forwardA Mixture Problem In an oil refinery, a storage tank contains 10,000 [L] of gasoline that initially has 50 [kg] of an additive dissolved in it. In preparation for winter weather, gasoline containing 0.2 [kg] of additive per litre is pumped into the tank at a rate of 200 [L/min]. 200 L/min containing 0.2 kg/L 220 L/min containing kg/L Where y is the amount of chemical in the container at time t, and V is the total volume of liquid in the container at time t, a) Write a formula V(t) for the capacity (volume) of the tank at any time. b) Find the domain of V for this problem. c) Find the rate of incoming additive in [kg/min]. d) Find the rate of outgoing additive in [kg/min]. e) Express the rate of change of the amount of chemical in the container at time t in its standard form. f) Calculate how much of the additive is in the tank 25 minutes after the pumping process begins.arrow_forwardImagine you drop three identical (same mass, same material, same shape), room temperature cubes into a pot of boiling water. After five minutes, you dump them out on a table and measure their temperatures. a. Is there any situation in which one cube could have a much higher temperature than the other two? b. Is there any situation in which all three cubes could have the same temperature as one another? c. Is there any situation in which at least one cube could have a temperature less than room temperature? (I.e., the cube got colder in the water.)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- Physics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningPhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning