College Physics
7th Edition
ISBN: 9780321601834
Author: Jerry D. Wilson, Anthony J. Buffa, Bo Lou
Publisher: Addison-Wesley
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Chapter 1, Problem 9E
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a 500-n block is dragged along a horizontal surface by an applied force t at an angle of 30.0° (see figure). the coefficient of kinetic friction is uk = 0.400 and the block moves at a constant velocity. what is the magnitude of the applied force T in newtons?
a 500-n block is dragged along a horizontal surface by an applied force t at an angle of 30.0° (see figure). the coefficient of kinetic friction is uk = 0.400 and the block moves at a constant velocity. what is the magnitude of the applied force T in newtons?
Block A, with a mass of 10 kg, rests on a 30° incline. The coefficient of kinetic friction is 0.20. The attached string is parallel to the incline and passes over a massless, frictionless pulley at the top. Block B, with a mass of 15.0 kg. is attached to the dangling end of the string. What is the acceleration of Block B in m/s?
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Chapter 1 Solutions
College Physics
Ch. 1 - Prob. 1MCQCh. 1 - The only SI standard represented by material...Ch. 1 - Which of the following is the SI base unit for (a)...Ch. 1 - Prob. 4MCQCh. 1 -
The prefix giga- means (a) 10−9, (b) 109, (c)...Ch. 1 - The prefix micro- means (a) 106, (b) 10–6, (c)...Ch. 1 - A new technology is concerned with objects the...Ch. 1 -
Which of the following has the greatest volume:...Ch. 1 - Which of the following metric prefixes is the...Ch. 1 - Both sides of an equation are equal in (a)...
Ch. 1 - Unit analysis of an equation cannot tell you if...Ch. 1 - Prob. 12MCQCh. 1 - Prob. 13MCQCh. 1 - You have a quantity of water and wish to express...Ch. 1 - Which of the following has the greatest number of...Ch. 1 - Which of the following numbers has four...Ch. 1 - Prob. 17MCQCh. 1 - An important step in problem solving before...Ch. 1 - Prob. 19MCQCh. 1 - In order-of-magnitude calculations, you should (a)...Ch. 1 - Prob. 1CQCh. 1 - Why is weight not a base quantity?
Ch. 1 - What replaced the original definition of the...Ch. 1 - Give a couple of major differences between the SI...Ch. 1 - If a fellow student tells you he saw a 3-cm-long...Ch. 1 - Prob. 6CQCh. 1 - Explain why a metric ton is equivalent to 1000...Ch. 1 - Prob. 8CQCh. 1 - Prob. 9CQCh. 1 - Prob. 10CQCh. 1 - Prob. 11CQCh. 1 - Prob. 12CQCh. 1 - Prob. 13CQCh. 1 - Prob. 14CQCh. 1 - Prob. 15CQCh. 1 - Are all the significant figures reported for a...Ch. 1 - Prob. 17CQCh. 1 - Prob. 18CQCh. 1 - What are the main steps in the problem-solving...Ch. 1 - When you do order-of-magnitude calculations,...Ch. 1 - When doing an order-of-magnitude calculation, how...Ch. 1 - Prob. 22CQCh. 1 -
Is the following statement reasonable? It took...Ch. 1 - Is the following statement reasonable? A car...Ch. 1 -
The metric system is a decimal (base-10) system,...Ch. 1 - (a) In the British system, 16 oz = 1 pt and 16 oz...Ch. 1 - Convert the following: (a) 40 000 000 bytes to MB,...Ch. 1 - A sailor tells you that if his ship is traveling...Ch. 1 - Prob. 5ECh. 1 - Prob. 6ECh. 1 - Prob. 7ECh. 1 - Prob. 8ECh. 1 - Prob. 9ECh. 1 - Prob. 10ECh. 1 - The general equation for a parabola is y = ax2 +...Ch. 1 - Prob. 12ECh. 1 - Prob. 13ECh. 1 - Prob. 14ECh. 1 - Is the equation for the area of a trapezoid, ,...Ch. 1 - Newton’s second law of motion (Section 4.3) is...Ch. 1 - Prob. 17ECh. 1 - Prob. 18ECh. 1 - Figure 1.8 (top) shows the elevation of a location...Ch. 1 - (a) If you wanted to express your height with the...Ch. 1 - Prob. 21ECh. 1 - Prob. 22ECh. 1 - Prob. 23ECh. 1 - Prob. 24ECh. 1 - Prob. 25ECh. 1 - Prob. 26ECh. 1 - Prob. 27ECh. 1 - Prob. 28ECh. 1 - (a) Which of the following represents the greatest...Ch. 1 - Prob. 30ECh. 1 - Prob. 31ECh. 1 - Prob. 32ECh. 1 - Prob. 33ECh. 1 - Prob. 34ECh. 1 - Fig. 1.18 is a picture of red blood cells seen...Ch. 1 - A student was 18 in. long when she was born. She...Ch. 1 - How many minutes of arc does the Earth rotate in 1...Ch. 1 - Prob. 38ECh. 1 - The Roman Coliseum used to be flooded with water...Ch. 1 - In the Bible, Noah is instructed to build an ark...Ch. 1 - Express the length 50 500 μm (micrometers) in...Ch. 1 - Prob. 42ECh. 1 - Prob. 43ECh. 1 - Express each of the numbers in Exercise 43 with...Ch. 1 - Round the following numbers to two significant...Ch. 1 - Prob. 46ECh. 1 - Prob. 47ECh. 1 - The interior storage compartment of a restaurant...Ch. 1 - The top of a rectangular table measures 1.245 m by...Ch. 1 - Prob. 50ECh. 1 - Prob. 51ECh. 1 - Prob. 52ECh. 1 - Work this exercise by the two given procedures as...Ch. 1 - Prob. 54ECh. 1 - Prob. 55ECh. 1 - Prob. 56ECh. 1 - Prob. 57ECh. 1 - The thickness of the numbered pages of a textbook...Ch. 1 - The mass of the Earth is 5.98 × 1024 kg. What is...Ch. 1 - To go to a football stadium from your house, you...Ch. 1 - Two chains of length 1.0 m are used to support a...Ch. 1 - Tony’s Pizza Palace sells a medium 9.0-in....Ch. 1 - Two students go into Tony’s Pizza Palace and order...Ch. 1 - In Fig. 1.22, which black region has the greater...Ch. 1 - The Channel Tunnel, or “Chunnel,” which runs under...Ch. 1 - Human adult blood contains, on average, 7000/mm3...Ch. 1 - The average number of hairs on the normal human...Ch. 1 - A car is driven 13 mi east and then a certain...Ch. 1 -
At the Indianapolis 500 time trials, each car...Ch. 1 - Approximately 118 mi wide, 307 mi long, and...Ch. 1 - In the Tour de Franco, a bicyclist races up two...Ch. 1 - A student wants to determine the distance from the...Ch. 1 - A farmer owns a piece of land in the shape of an...Ch. 1 - In a radioactivity experiment, a solid lead brick...Ch. 1 - Approximately 118 mi wide, 307 mi long, and...Ch. 1 - Two separate seismograph stations receive...Ch. 1 - You are sailing a radio-controlled model powerboat...Ch. 1 - Prob. 78E
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- When current is flowing through the coil, the direction of the torque can be thought of in two ways. Either as the result of the forces on current carrying wires, or as a magnetic dipole moment trying to line up with an external field (e.g. like a compass). Note: the magnetic moment of a coil points in the direction of the coil's magnetic field at the center of the coil. d) Forces: We can consider the left-most piece of the loop (labeled ○) as a short segment of straight wire carrying current directly out of the page at us. Similarly, we can consider the right-most piece of the loop (labeled ) as a short segment straight wire carrying current directly into the page, away from us. Add to the picture below the two forces due to the external magnetic field acting on these two segments. Then describe how these two forces give a torque and determine if the torque acts to rotate the loop clockwise or counterclockwise according to this picture? Barrow_forwardIn each of the following, solve the problem stated. Express your answers in three significant figures. No unit is considered incorrect. 1. For the circuit shown, determine all the currents in each branch using Kirchhoff's Laws. (3 points) 6 5V 2 B C 4 A www 6 VT ww T10 V F E 2. Compute for the total power dissipation of the circuit in previous item. (1 point) 3. Use Maxwell's Mesh to find Ix and VAB for the circuit shown. (3 points) Ix 50 V 20 ww 21x B 4. Calculate all the currents in each branch using Maxwell's Mesh for the circuit shown. (3 points) www 5ი 10 24V 2A 2002 36Varrow_forwardIf the mass of substance (1 kg), initial temperature (125˚C), the final temperature (175˚C) and the total volume of a closed container (1 m3) remains constant in two experiments, but one experiment is done with water ( ) and the other is done with nitrogen ( ). What is the difference in the change in pressure between water and nitrogen?arrow_forward
- Using the simplified energy balance in Equation 1, suppose there is heat transfer of 40.00 J to a system, while the system does 10.00 J of work. Later, there is heat transfer of 25.00 J out of the system while 4.00 J of work is done on the system. What is the net change in internal energy of the system?arrow_forwardYou pour a litre (1 kg) of 25.0˚C water into a 0.500 kg aluminium pan off the stove, but has previously been heated so it starts with a temperature of 120˚C. What is the temperature when the water and the pan reach thermal equilibrium (i.e., what is the temperature of both objects when they reach the same temperature)? Assume that the pan is placed on an insulated pad and a negligible amount of water boils off.arrow_forwardA golf club hits a golf ball and the golf ball’s flight reaches a maximum height of 5.48 m. Calculate the momentum of the golf ball at the maximum height if the mass of the golf ball is 0.459 kg.arrow_forward
- • Superposition Theorem • Thevenin's and Norton's Theorem 1. Find the unknown voltage V₁, unknown resistances R1 and R2, and currents flowing through R1 and R2 for the circuit shown below using Superposition Theorem. 40 V + R₁₂ w B C ♥16A 10A www 4A F ww 2 E Ꭰ 2. Use Thevenin's Theorem to find the current flowing in 3-ohm resistor and its power dissipation from the circuit shown in the right. + 3. Use Norton's Theorem for the same instruction as for No. 2. 8 V A www 202 B wwww 20 Ω 10 V + 302 202 www C - 12 V 502 www.arrow_forwardFill in blanksarrow_forwardA rock is dropped from a height of 2.00 m. Determine the velocity of the rock just before it hits the ground. If the momentum of the rock just before hitting the ground is 14.0 kg m/s, what is the mass of the rock? Is the collision between the rock and the ground elastic or inelastic? Explain.arrow_forward
- Describe how the momentum of a single ball changes as it free falls from a height of approximately 1 m, collides with a hard floor, and rebounds.arrow_forward• Nature of Resistance Temperature-Resistance Relationship Ohm's Law, Energy and Power Kirchhoff's Law • • Maxwell's Mesh Analysis 1. The steel of the third rail of a railway system has a resistivity of 21.4 μ-cm. If its cross-sectional area is 8.2 in², calculate the resistance per mile of rail, neglecting the effect of joints between sections. (1 point) 2. An incandescent lamp has a tungsten filament whose resistance is 96 at its operating temperature of 2900°C. Calculate the filament resistance when the lamp is disconnected from the electric source, under which condition its temperature is 24°C. (Use do = 0.0045 02/°C for tungsten) (1 point) 3. For the circuit shown, find the following: 50 V 602 10 V 702 a. the value of resistor R. (1 point) b. the equivalent resistance with respect to the 50-V source. (1 point) 4. For the circuit shown, determine all the currents in each branch using Kirchhoff's Laws. (3 points) A 5V 2 В -ний C 4 6 VT ww F E 5. Use Maxwell's Mesh to find I, and VAB…arrow_forwardFor items 8-9, refer to the problem below. Find all the currents flowing in every resistor, power dissipation in every resistor and the total power of the circuit shown at the right using... 8. Kirchhoff's Laws (5 pts) 9. Maxwell's Mesh Analysis (5 pts) A 8 V 10 V B + 20 Ω 3Ω 202 wwww C wwww 202 + 50 www 12 Varrow_forward
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