Conceptual Phy. Sci. - With Access (Custom)
6th Edition
ISBN: 9781323406588
Author: Hewitt
Publisher: PEARSON
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Textbook Question
Chapter 16, Problem 5RCQ
How is a solution different from a suspension?
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A object of mass 3.00 kg is subject to a force FX that varies with position as in the figure below.
Fx (N)
4
3
2
1
x(m)
2 4 6 8 10 12 14 16 18 20
i
(a) Find the work done by the force on the object as it moves from x = 0 to x = 5.00 m.
J
(b) Find the work done by the force on the object as it moves from x
= 5.00 m to x = 11.0 m.
]
(c) Find the work done by the force on the object as it moves from x = 11.0 m to x = 18.0 m.
J
(d) If the object has a speed of 0.400 m/s at x = 0, find its speed at x = 5.00 m and its speed at x
speed at x = 5.00 m
speed at x = 18.0 m
m/s
m/s
=
18.0 m.
A crate with a mass of 74.0 kg is pulled up an inclined surface by an attached cable, which is driven by a motor. The crate moves a distance of 70.0 m along the surface at a constant speed of 3.3 m/s. The surface is inclined at an angle of 30.0° with the horizontal. Assume friction is
negligible.
(a) How much work (in kJ) is required to pull the crate up the incline?
kJ
(b) What power (expressed in hp) must a motor have to perform this task?
hp
A deli uses an elevator to move items from one level to another. The elevator has a mass of 550 kg and moves upward with constant acceleration for 2.00 s until it reaches its cruising speed of 1.75 m/s. (Note: 1 hp
(a) What is the average power (in hp) of the elevator motor during this time interval?
Pave =
hp
(b) What is the motor power (in hp) when the elevator moves at its cruising speed?
Pcruising
hp
=
746 W.)
Chapter 16 Solutions
Conceptual Phy. Sci. - With Access (Custom)
Ch. 16 - Prob. 1RCQCh. 16 - Prob. 2RCQCh. 16 - Prob. 3RCQCh. 16 - Prob. 4RCQCh. 16 - How is a solution different from a suspension?Ch. 16 - How can a solution be separated from a suspension?Ch. 16 - What happens to the volume of a sugar solution as...Ch. 16 - Prob. 8RCQCh. 16 - What does it mean to say that a solution is...Ch. 16 - Is concentration typically given with the volume...
Ch. 16 - Why does the solubility of a gas solute in a...Ch. 16 - Why do sugar crystals dissolve faster when...Ch. 16 - Is sugar a polar or nonpolar substance?Ch. 16 - Which portion of a soap molecule is nonpolar?Ch. 16 - What is the difference between a soap and a...Ch. 16 - Prob. 16RCQCh. 16 - Why are soap molecules so attracted to calcium and...Ch. 16 - Why is treated water sprayed into the air before...Ch. 16 - What are two ways in which people disinfect water...Ch. 16 - What naturally occurring element has been...Ch. 16 - Why can wastewater treatment requirements in...Ch. 16 - What is the first step in treating raw sewage?Ch. 16 - Prob. 23RCQCh. 16 - Prob. 30TASCh. 16 - Prob. 31TASCh. 16 - Prob. 32TASCh. 16 - How much sodium chloride, in grams, is needed to...Ch. 16 - If water is added to 1 mole of sodium chloride in...Ch. 16 - A student is told to use 20.0 g of sodium chloride...Ch. 16 - Rank the following solutions in order of...Ch. 16 - Rank the following compounds in order of...Ch. 16 - Prob. 38TARCh. 16 - How might you separate a mixture of sand and salt?...Ch. 16 - Mixtures can be separated into their components by...Ch. 16 - Why can't the elements of a compound be separated...Ch. 16 - Many dry cereals are fortified with iron, which is...Ch. 16 - The Chemist's Classification of Matter 43....Ch. 16 - Classify each of the following as an element,...Ch. 16 - 45. Which of these boxes best represents a...Ch. 16 - Prob. 46ECh. 16 - Prob. 47ECh. 16 - Prob. 48ECh. 16 - Which is more dense: air saturated with water...Ch. 16 - How many sugar molecules are there in a 2 M sugar...Ch. 16 - Prob. 51ECh. 16 - Which should weigh more: 100 mL of fresh water or...Ch. 16 - Explain why, for these three substances, the...Ch. 16 - The boiling point of 1,4-butanediol is 230C. Would...Ch. 16 - Based on atomic size, which would you expect to be...Ch. 16 - If nitrogen, N2, were pumped into your lungs at...Ch. 16 - Prob. 57ECh. 16 - Account for the observation that ethanol, C2H5OH,...Ch. 16 - At 10C, which is more concentrated: a saturated...Ch. 16 - Why is rain or snow called precipitation?Ch. 16 - Prob. 61ECh. 16 - Some bottled water is now advertised as containing...Ch. 16 - Two plastic bottles of fresh seltzer water are...Ch. 16 - Why can 500 mL of fresh water absorb more gaseous...Ch. 16 - Would you expect to find more dissolved oxygen in...Ch. 16 - Soaps, Detergents, and Hard Water Fatty acid...Ch. 16 - Fatty acid molecules can also align to form a...Ch. 16 - Prob. 68ECh. 16 - A scum forms on the surface of boiling hard water....Ch. 16 - Calcium and magnesium ions are more attracted to...Ch. 16 - Phosphate ions, PO43-, were once added to...Ch. 16 - Oils at the top of a tree have a higher...Ch. 16 - Why is distilling water so relatively expensive?Ch. 16 - What reverses with reverse osmosis?Ch. 16 - Why is it significantly less costly to purify...Ch. 16 - Prob. 76ECh. 16 - Many homeowners get their drinking; water piped up...Ch. 16 - Is the decomposition of food by bacteria in our...Ch. 16 - Where does most of the solid mass of raw sewage...Ch. 16 - Why is flushing a toilet with clean water from a...Ch. 16 - Why are people so willing to buy bottled water...Ch. 16 - It is possible to tow icebergs to coastal cities...Ch. 16 - Someone argues that he or she doesn't drink tap...Ch. 16 - Prob. 2RATCh. 16 - The air in your house is an example of a (a)...Ch. 16 - Half-frozen fruit punch is always sweeter than the...Ch. 16 - Why is sodium chloride, NaCl, insoluble in...Ch. 16 - Fish don't live very long in water that has just...Ch. 16 - Prob. 7RATCh. 16 - What is an advantage of using chlorine gas to...Ch. 16 - Why do red blood cells, which contain an aqueous...Ch. 16 - A stagnant pond smells worse than a babbling brook...
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