Applied Physics (11th Edition)
11th Edition
ISBN: 9780134159386
Author: Dale Ewen, Neill Schurter, Erik Gundersen
Publisher: PEARSON
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Textbook Question
Chapter 12, Problem 18RQ
Describe how to find the specific gravity of an object.
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A uniform ladder of length L and weight w is leaning against a vertical wall. The coefficient of static friction between the ladder and the floor is the same as that between the ladder and the wall. If this
coefficient of static friction is μs : 0.535, determine the smallest angle the ladder can make with the floor without slipping.
°
=
A 14.0 m uniform ladder weighing 480 N rests against a frictionless wall. The ladder makes a 55.0°-angle with the horizontal.
(a) Find the horizontal and vertical forces (in N) the ground exerts on the base of the ladder when an 850-N firefighter has climbed 4.10 m along the ladder from the bottom.
horizontal force
magnitude
342.
N
direction
towards the wall
✓
vertical force
1330
N
up
magnitude
direction
(b) If the ladder is just on the verge of slipping when the firefighter is 9.10 m from the bottom, what is the coefficient of static friction between ladder and ground?
0.26
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ma
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John is pushing his daughter Rachel in a wheelbarrow when it is stopped by a brick 8.00 cm high (see the figure below). The handles make an angle of 0 = 17.5° with the ground. Due to the weight of
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Chapter 12 Solutions
Applied Physics (11th Edition)
Ch. 12.2 - A packing crate 2.50m 0.80m 0.45m weighs 1.41 ...Ch. 12.2 - A packing crate 2.50 m 20.0 cm 30.0 cm has a...Ch. 12.2 - A spring is stretched 24.0 in. by a force of 54.0...Ch. 12.2 - A 17.0-N force stretches a wire 0.650 cm. (a) What...Ch. 12.2 - A force of 36.0 N stretches a spring 18.0 cm. Find...Ch. 12.2 - A force of 5.00 N is applied to a spring whose...Ch. 12.2 - Each vertical steel column of an office building...Ch. 12.2 - Each vertical steel column of an office building...Ch. 12.2 - If the compression of each steel column in Problem...Ch. 12.2 - A coiled spring is stretched 40.0 cm by a 5.00-N...
Ch. 12.2 - A 12,000-N load is hanging from a steel cable that...Ch. 12.2 - A rectangular cast-iron column 25.0 m 25.0 cm ...Ch. 12.2 - In a Hookes law experiment, the following weights...Ch. 12.2 - What was the original length of a spring with...Ch. 12.2 - A bar weighing 26.0 N is supported horizontally on...Ch. 12.2 - A firefighter weighs 725 N. She wears shoes that...Ch. 12.2 - Prob. 17PCh. 12.2 - The cross-sectional area of a wire is 2.50 103...Ch. 12.2 - A spring having a force constant of 1.25 N/cm is...Ch. 12.5 - Express mass density in kg/m3 and weight density...Ch. 12.5 - Express mass density in kg/m3 and weight density...Ch. 12.5 - If a block of wood of the size in Problem 2 has a...Ch. 12.5 - Find the volume (in cm3) of 1350 g of mercury.Ch. 12.5 - Find the volume (in cm3) of 1350g of cork.Ch. 12.5 - Find the volume (in m3) of 1350 g of nitrogen at...Ch. 12.5 - A block of gold 9.00 in. 8.00 in. 6.00 in....Ch. 12.5 - A cylindrical piece of copper is 9.00 in. tall and...Ch. 12.5 - A piece of aluminum of mass 6.24 kg displaces...Ch. 12.5 - If 1.00 pint of turpentine weighs 0.907 lb, what...Ch. 12.5 - Find the mass density of gasoline if 106 g...Ch. 12.5 - How much does 1.00 gal of gasoline weigh?Ch. 12.5 - Determine the volume (in m3) of 3045 kg of oil.Ch. 12.5 - How many ft3 will 573 lb of water occupy?Ch. 12.5 - If 20.4 in3 of linseed oil weighs 0.694 lb, what...Ch. 12.5 - Prob. 16PCh. 12.5 - Find the volume of 3.00 kg of propane at 0C and 1...Ch. 12.5 - Granite has a mass density of 2650 kg/m3. Find its...Ch. 12.5 - Find the mass density of a metal block 18.0 cm ...Ch. 12.5 - Find the mass (in kg) of 1.00 m3 of (a) water, (b)...Ch. 12.5 - What size tank (in litres) is needed for 1000 kg...Ch. 12.5 - Copper has a mass density of 8890 kg/m3. Find its...Ch. 12.5 - What is the mass of gasoline in a 1250-litre gas...Ch. 12.5 - If racing alcohol has a mass density of 790 kg/m3,...Ch. 12.5 - Use Table 12.2 to find the specific gravity of...Ch. 12.5 - Use Table 12.2 to find the specific gravity of...Ch. 12.5 - Use Table 12.2 to find the specific gravity of...Ch. 12.5 - Use Table 12.2 to find the specific gravity of...Ch. 12.5 - Use Table 12.2 to find the specific gravity of...Ch. 12.5 - Use Table 12.2 to find the specific gravity of...Ch. 12.5 - The specific gravity of material X is 0.82. Does...Ch. 12.5 - The specific gravity of material Y is 1.7. Does it...Ch. 12.5 - The specific gravity of material Z is 0.52. Does...Ch. 12.5 - The specific gravity of material W is 11.5. Does...Ch. 12.5 - A proton has mass 1.67 1027 kg and diameter 8.2 ...Ch. 12.5 - Find the mass density of a 315-g object that...Ch. 12.5 - What is the mass density of a 500 g block that...Ch. 12 - Prob. 1RQCh. 12 - Prob. 2RQCh. 12 - The common industrial method used to measure the...Ch. 12 - Prob. 4RQCh. 12 - Prob. 5RQCh. 12 - Capillary action refers to a. the mixing of...Ch. 12 - The relationship of the change in length of a...Ch. 12 - The ability of the surface of water to support a...Ch. 12 - In your own words, describe the difference between...Ch. 12 - Would the mass density of an object be the same if...Ch. 12 - In your own words, describe capillary action.Ch. 12 - Prob. 12RQCh. 12 - Give one example of the effect of surface tension...Ch. 12 - The mass of a proton is approximately _____ times...Ch. 12 - The applied force divided by the area over which...Ch. 12 - In your own words, state Hooke's law.Ch. 12 - The commonly used unit of stress in the metric...Ch. 12 - Describe how to find the specific gravity of an...Ch. 12 - What is the ratio of mass to volume called?Ch. 12 - What is friction in liquids called?Ch. 12 - A spring that has been permanently deformed is...Ch. 12 - List the three states of matter.Ch. 12 - Distinguish between a molecule and an atom.Ch. 12 - Distinguish between a neutron and a proton.Ch. 12 - List the five basic stresses.Ch. 12 - Explain how a hydrometer measures the charge in a...Ch. 12 - A force of 32.5 N stretches a wire 0.470 cm. What...Ch. 12 - A force of 7.33 N is applied to a spring whose...Ch. 12 - Each vertical steel column of an office building...Ch. 12 - A rectangular cast-iron column 16.0 cm 16.0 cm ...Ch. 12 - Find the weight density of a block of metal 7.00...Ch. 12 - A cylindrical piece of aluminum is 4.25 cm tall...Ch. 12 - A piece of metal has a mass of 8.36 kg. If it...Ch. 12 - A block of wood is 27.7 in. 36.3 in. 12.4 in....Ch. 12 - Find the volume (in cm3) of 759 g of mercury.Ch. 12 - Find the volume (in m3) of 1970 g of hydrogen at...Ch. 12 - Find the mass of 1510 m3 of oxygen at 0C and 1...Ch. 12 - Find the weight of 951 ft3 of water.Ch. 12 - Find the weight density of a block of material...Ch. 12 - Find the weight density of 2.00 quarts of liquid...Ch. 12 - A quantity of liquid weighs 4.65 lb with a weight...Ch. 12 - The density of a metal is 694 kg/m3. Find its...Ch. 12 - A solid displaces 4.30 gal of water and has a...Ch. 12 - Find the mass of a rectangular gold bar 4.00 cm ...Ch. 12 - Find the mass density of a chunk of rock using...Ch. 12 - The specific gravity of an unknown substance is...Ch. 12 - Instead of carrying a full-size spare tire, many...Ch. 12 - Observe the warped lines on asphalt pavement in...Ch. 12 - Raul weighs 235 lb and is able to float in...Ch. 12 - A tanker truck with a cylindrical container 11.3 m...Ch. 12 - Every morning Shakira weighs herself on a bathroom...
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