Foundations of Astronomy
13th Edition
ISBN: 9781305079151
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Chapter 25, Problem 7LTL
To determine
The things that can be seen in the image that tells something about the history of the asteroid.
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A proton moves at 5.20 × 105 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 8.40 × 103 N/C. Ignore any gravitational effects.
(a) Find the time interval required for the proton to travel 6.00 cm horizontally.
83.33
☑
Your response differs from the correct answer by more than 10%. Double check your calculations. ns
(b) Find its vertical displacement during the time interval in which it travels 6.00 cm horizontally. (Indicate direction with the sign of your answer.)
2.77
Your response differs from the correct answer by more than 10%. Double check your calculations. mm
(c) Find the horizontal and vertical components of its velocity after it has traveled 6.00 cm horizontally.
5.4e5
V
×
Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. I + [6.68e4
Your response differs significantly from the correct answer. Rework your solution from the beginning and check each…
(1)
Fm
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mn
Fm
B
W₁
e
Fmt
W
0
Fit
Wt
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n
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As illustrated in Fig.
consider the
person
performing extension/flexion movements of the lower leg
about the knee joint (point O) to investigate the forces and
torques produced by muscles crossing the knee joint. The
setup of the experiment is described in Example
above.
The geometric parameters of the model under investigation,
some of the forces acting on the lower leg and its free-body
diagrams are shown in Figs. and For this system, the
angular displacement, angular velocity, and angular accelera-
tion of the lower leg were computed using data obtained
during the experiment such that at an instant when 0 = 65°,
@ = 4.5 rad/s, and a = 180 rad/s². Furthermore, for this sys-
tem assume that a = 4.0 cm, b = 23 cm, ß = 25°, and the net
torque generated about the knee joint is M₁ = 55 Nm. If the
torque generated about the knee joint by the weight of the lower
leg is Mw 11.5 Nm, determine:
=
The moment arm a of Fm relative to the…
The figure shows a particle that carries a charge of 90 = -2.50 × 106 C. It is moving along the +y
->
axis at a speed of v = 4.79 × 106 m/s. A magnetic field B of magnitude 3.24 × 10-5 T is directed
along the +z axis, and an electric field E of magnitude 127 N/C points along the -x axis.
Determine (a) the magnitude and (b) direction (as an angle within x-y plane with respect to +x-
axis in the range (-180°, 180°]) of the net force that acts on the particle.
+x
+z
AB
90
+y
Chapter 25 Solutions
Foundations of Astronomy
Ch. 25 - Prob. 1RQCh. 25 - What do Widmansttten patterns indicate about the...Ch. 25 - Prob. 3RQCh. 25 - Prob. 4RQCh. 25 - Prob. 5RQCh. 25 - Prob. 6RQCh. 25 - Why do astronomers refer to carbonaceous...Ch. 25 - Prob. 8RQCh. 25 - Prob. 9RQCh. 25 - Of all the meteorites shown in Figure 24-2, which...
Ch. 25 - Meteorites were once part of which type of...Ch. 25 - Most sporadic meteors were once part of which...Ch. 25 - Meteors in showers were once part of which type of...Ch. 25 - Prob. 14RQCh. 25 - Prob. 15RQCh. 25 - Why do astronomers conclude that asteroids were...Ch. 25 - A fragment from the surface of a differentiated...Ch. 25 - What evidence indicates that the asteroids are...Ch. 25 - Prob. 19RQCh. 25 - Prob. 20RQCh. 25 - What evidence indicates that some asteroids once...Ch. 25 - How is the composition of meteorites related to...Ch. 25 - Prob. 23RQCh. 25 - Prob. 24RQCh. 25 - What is the difference between a centaur and a...Ch. 25 - What is the difference between a comets dust tail...Ch. 25 - What evidence indicates that a comets nucleus is...Ch. 25 - Why do most short-period comets have prograde...Ch. 25 - What are possible fates (or end-states) for...Ch. 25 - What are the hypotheses for how the bodies in the...Ch. 25 - Prob. 31RQCh. 25 - How would studying the chemical composition of...Ch. 25 - Prob. 1DQCh. 25 - Prob. 2DQCh. 25 - If cometary nuclei were heated during the...Ch. 25 - Prob. 4DQCh. 25 - Prob. 5DQCh. 25 - Assuming a night lasts 12 hours, how many total...Ch. 25 - Prob. 2PCh. 25 - If a single asteroid 1 km in diameter were to...Ch. 25 - If a trillion (1012) asteroids, each 1 km in...Ch. 25 - Prob. 5PCh. 25 - The asteroid Vesta has a mass of 2.6 1020 kg and...Ch. 25 - Prob. 7PCh. 25 - What is the maximum angular diameter of the dwarf...Ch. 25 - At what average distances from the Sun would you...Ch. 25 - Prob. 10PCh. 25 - If the velocity of the solar wind is about 4.0 ...Ch. 25 - What is the average distance of Comet Halley from...Ch. 25 - If you saw Comet Halley when the comet was 0.7 AU...Ch. 25 - What is the orbital period of a comet nucleus at...Ch. 25 - The mass of an average comets nucleus is about 1.0...Ch. 25 - Prob. 16PCh. 25 - Look at Figure 24-2d. Identify the chondrules by...Ch. 25 - Prob. 2LTLCh. 25 - Prob. 3LTLCh. 25 - Look at the images of Comet Mrkos on the left page...Ch. 25 - Prob. 5LTLCh. 25 - Prob. 6LTLCh. 25 - Prob. 7LTLCh. 25 - Prob. 8LTL
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- A proton moves at 5.20 x 105 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 8.40 × 103 N/C. Ignore any gravitational effects. (a) Find the time interval required for the proton to travel 6.00 cm horizontally. 83.33 Your response differs from the correct answer by more than 10%. Double check your calculations. ns (b) Find its vertical displacement during the time interval in which it travels 6.00 cm horizontally. (Indicate direction with the sign of your answer.) 2.77 Your response differs from the correct answer by more than 10%. Double check your calculations. mm (c) Find the horizontal and vertical components of its velocity after it has traveled 6.00 cm horizontally. = 5.4e5 Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. I + 6.68e4 Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step…arrow_forward(a) A physics lab instructor is working on a new demonstration. She attaches two identical copper spheres with mass m = 0.180 g to cords of length L as shown in the figure. A Both spheres have the same charge of 6.80 nC, and are in static equilibrium when = 4.95°. What is L (in m)? Assume the cords are massless. 0.150 Draw a free-body diagram, apply Newton's second law for a particle in equilibrium to one of the spheres. Find an equation for the distance between the two spheres in terms of L and 0, and use this expression in your Coulomb force equation. m (b) What If? The charge on both spheres is increased until each cord makes an angle of 0 = 9.90° with the vertical. If both spheres have the same electric charge, what is the charge (in nC) on each sphere in this case? 13.6 ☑ Use the same reasoning as in part (a), only now, use the length found in part (a) and the new angle to solve for the charge. nCarrow_forwardA proton moves at 5.20 x 105 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 8.40 × 10³ N/C. Ignore any gravitational effects. (a) Find the time interval required for the proton to travel 6.00 cm horizontally. 1.15e-7 ☑ Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. ns (b) Find its vertical displacement during the time interval in which it travels 6.00 cm horizontally. (Indicate direction with the sign of your answer.) 5.33e-3 ☑ Your response is off by a multiple of ten. mm (c) Find the horizontal and vertical components of its velocity after it has traveled 6.00 cm horizontally. | ↑ + jkm/sarrow_forward
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