Pearson eText for College Physics: Explore and Apply -- Instant Access (Pearson+)
2nd Edition
ISBN: 9780137443000
Author: Eugenia Etkina, Gorazd Planinsic
Publisher: PEARSON+
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Chapter 22, Problem 2RQ
Review Question 22.2 How can we test the law of reflection?
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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
×
You appear to be using 4.10 m from part (a) for the position of the…
Your neighbor designs automobiles for a living. You are fascinated with her work. She is designing a new automobile and needs to determine how strong the front suspension should be. She knows of
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ma
when the wheels are locked and the automobile is skidding on the road. She gives you the following information. The mass of the automobile is m₂ = 1.10 × 103 kg and it can carry five passengers of
average mass m = 80.0 kg. The front and rear wheels are separated by d = 4.45 m. The center of mass of the car carrying five passengers is dCM = 2.25 m behind the front wheels and
hcm = 0.630 m above the roadway. A typical coefficient of kinetic friction between tires and roadway is μk 0.840. (Caution: The braking automobile is not in an inertial reference frame. Enter the
magnitude of the force in N.)…
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
Rachel and the wheelbarrow, a downward force of 403 N is exerted at the center of the wheel, which has a radius of 16.0 cm. Assume the brick remains fixed and does not slide along the ground. Also
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(No Response) N
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magnitude (No Response) KN
direction
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Chapter 22 Solutions
Pearson eText for College Physics: Explore and Apply -- Instant Access (Pearson+)
Ch. 22 - Prob. 1RQCh. 22 - Review Question 22.2 How can we test the law of...Ch. 22 - Review Question 22.3 Why is the expression light...Ch. 22 -
Review Question 22.4 Why did we study total...Ch. 22 - Review Question 22.5 What is the critical angle...Ch. 22 - Review Question 22.6 Why is the sky blue? Why are...Ch. 22 - Prob. 7RQCh. 22 - 1. How can you convince your friend that a beam of...Ch. 22 - 2. Each point of a light-emitting object
a. sends...Ch. 22 - What is a light ray? a. A thin beam of light b. A...
Ch. 22 - Prob. 5MCQCh. 22 - You fix a point-like light source 3.0m away from a...Ch. 22 - Prob. 7MCQCh. 22 - A light ray travels through air and then passes...Ch. 22 - 9. A right triangular prism sits on a base A...Ch. 22 - 10. A laser beam travels through oil in a...Ch. 22 - Prob. 11MCQCh. 22 - Prob. 12MCQCh. 22 - What effects of light radiation and reflection are...Ch. 22 - Prob. 14CQCh. 22 - Prob. 15CQCh. 22 - Explain how a sundial works (a sundial is just a...Ch. 22 - Prob. 17CQCh. 22 - Prob. 18CQCh. 22 - Prob. 19CQCh. 22 - Prob. 20CQCh. 22 - Prob. 21CQCh. 22 - The visible diameters of the Moon and the Sun are...Ch. 22 - The shadow of the Moon on Earth is 200 km wide....Ch. 22 - Prob. 24CQCh. 22 - 25. During the day, you can see the trees in your...Ch. 22 - 26. You look at a fish underwater Draw a ray...Ch. 22 - 27. Take a pencil and try to touch a penny on the...Ch. 22 - 28. Will a beam of light experience total internal...Ch. 22 - Prob. 29CQCh. 22 - Prob. 30CQCh. 22 - Prob. 31CQCh. 22 - Prob. 32CQCh. 22 - 33. What phenomena can be explained using a wave...Ch. 22 - How is it possible that two different models can...Ch. 22 - Oliver has finished building a wall in a house. He...Ch. 22 - Tree height You are standing under a tree. The...Ch. 22 - Lunar eclipse A lunar eclipse happens when the...Ch. 22 - * Shadows during romantic dinner You and a friend...Ch. 22 - * Pinhole camera (camera obscura) You want to make...Ch. 22 - 6. * Solar eclipse Only observers in a very narrow...Ch. 22 - Prob. 7PCh. 22 - An extended light source can be modeled as a group...Ch. 22 - * You have a small mirror. While holding the...Ch. 22 - Prob. 11PCh. 22 - 12. Design a mirror arrangement so that light from...Ch. 22 - Two mirrors are oriented at right angles. A narrow...Ch. 22 - Prob. 14PCh. 22 - A flat mirror is rotated 17 about an axis in the...Ch. 22 - (a) A laser beam passes from air into a 25 glucose...Ch. 22 - 17. A beam of light passes from glass with...Ch. 22 - A beam of light passes from air into a transparent...Ch. 22 - 19. * Moving laser beam An aquarium open at the...Ch. 22 - **Lifting light You have a V-shaped transparent...Ch. 22 - Prob. 21PCh. 22 - Prob. 22PCh. 22 - 23. * BIO Vitreous humor Behind the lens of the...Ch. 22 - Prob. 24PCh. 22 - * Light moving up and toward the right in air...Ch. 22 - * A laser beam is incident at 30 with respect to...Ch. 22 - * Can your light be seen? You swim under water at...Ch. 22 - * Light is incident on the boundary between two...Ch. 22 - 29. Diamond total reflection Determine the...Ch. 22 - Determine the refractive index of a glucose...Ch. 22 - * You wish to use a prism to change the direction...Ch. 22 - * You aim a laser beam (in air) at 80.0 with...Ch. 22 - 33. * Prism total reflection What must be the...Ch. 22 - Gems and critical angles In gemology, two of the...Ch. 22 - (a) The refractive index for the gem aquamarine is...Ch. 22 - 36. * You have three transparent media with...Ch. 22 - 37. (a) Rays of light are incident on a glass-air...Ch. 22 - 42. ** When reaching a boundary between two media,...Ch. 22 - 43. * A laser beam travels from air (n = 1.00)...Ch. 22 - . You sit on a raft and want to orient a mirror so...Ch. 22 - 45. ** Rain sensor Many cars today are equipped...Ch. 22 - Prob. 46PCh. 22 - Prob. 47PCh. 22 - 48. A light ray is incident on a flat piece of...Ch. 22 - 49. * Prism You have a triangular prism made of...Ch. 22 - * You have a candle and a large piece of paper...Ch. 22 - 52. * You place a point-like source of light at...Ch. 22 - 53. ** There is a light pole on one bank of a...Ch. 22 - 54. ** Coated optic fiber An optic fiber of...Ch. 22 - relative to the normal, hits the mirror, reflects,...Ch. 22 - 56. ** A scuba diver stands at the bottom of a...Ch. 22 - Prob. 57RPPCh. 22 - Rainbows How is a rainbow formed? Recall that the...Ch. 22 - Rainbows How is a rainbow formed? Recall that the...Ch. 22 - Prob. 60RPPCh. 22 - Prob. 61RPPCh. 22 - Rainbows How is a rainbow formed? Recall that the...Ch. 22 - Prob. 63RPPCh. 22 - Prob. 64RPPCh. 22 - Rainbows How is a rainbow formed? Recall that the...Ch. 22 - Prob. 66RPPCh. 22 - Prob. 67RPPCh. 22 - Prob. 68RPP
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