Physics
11th Edition
ISBN: 9781119326342
Author: CUTNELL
Publisher: WILEY
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Chapter 7.2, Problem 9CYU
To determine
To explain: Whether a device like catapult can be used to move the asteroid closer to the earth or not.
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An elevator car has two equal masses attached to the ceiling as shown. (Assume m = 3.10 kg.)
m
m
T₁
T2
(a) The elevator ascends with an acceleration of magnitude 2.00 m/s². What are the tensions in the two strings? (Enter your
answers in N.)
=
N
T₁
Τι
=
N
(b) The maximum tension the strings can withstand is 78.8 N. What is the maximum acceleration of the elevator so that a
string does not break? (Enter the magnitude in m/s².)
m/s²
(a) At what speed (in m/s) will a proton move in a circular path of the same radius as an electron that travels at 7.85 x 100 m/s perpendicular to the Earth's magnetic field at an altitude where the field strength is 1.20 x 10-5 T?
4.27e3
m/s
(b) What would the radius (in m) of the path be if the proton had the same speed as the electron?
7.85e6
x m
(c) What would the radius (in m) be if the proton had the same kinetic energy as the electron?
195.38
x m
(d) What would the radius (in m) be if the proton had the same momentum as the electron?
3.7205
m
!
Required information
The block shown is made of a magnesium alloy, for which E = 45 GPa and v = 0.35. Know that σx = -185 MPa.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
25 mm
B
D
40 mm
100 mm
Determine the magnitude of Oy for which the change in the height of the block will be zero.
The magnitude of Oy is
MPa.
Chapter 7 Solutions
Physics
Ch. 7.1 - 1. Two identical automobiles have the same speed,...Ch. 7.1 - 2. In Times Square in New York City, people...Ch. 7.1 - 3. Two objects have the same momentum. Do the...Ch. 7.1 - 4. (a) Can a single object have a kinetic energy...Ch. 7.1 - Prob. 5CYUCh. 7.1 - Prob. 6CYUCh. 7.2 - Prob. 7CYUCh. 7.2 - Prob. 8CYUCh. 7.2 - Prob. 9CYUCh. 7.2 - Prob. 10CYU
Ch. 7.2 - Prob. 11CYUCh. 7.2 - Prob. 12CYUCh. 7.2 - Prob. 13CYUCh. 7.2 - Prob. 14CYUCh. 7.3 - Prob. 15CYUCh. 7.3 - Prob. 16CYUCh. 7.3 - Prob. 17CYUCh. 7.5 - Prob. 18CYUCh. 7.5 - Prob. 19CYUCh. 7.5 - Prob. 20CYUCh. 7 - Prob. 1FCCh. 7 - 2. Six runners have the mass (in multiples of m0),...Ch. 7 - Prob. 6FCCh. 7 - Prob. 7FCCh. 7 - Prob. 10FCCh. 7 - Prob. 13FCCh. 7 - Prob. 15FCCh. 7 - Prob. 17FCCh. 7 - Prob. 1PCh. 7 - Prob. 2PCh. 7 - Prob. 3PCh. 7 - Prob. 4PCh. 7 - Prob. 5PCh. 7 - Prob. 6PCh. 7 - 7. Refer to Conceptual Example 3 as an aid in...Ch. 7 - Prob. 8PCh. 7 - Prob. 9PCh. 7 - Prob. 10PCh. 7 - Prob. 11PCh. 7 - Prob. 12PCh. 7 - 13. An 85-kg jogger is heading due east at a speed...Ch. 7 - Prob. 14PCh. 7 - Prob. 15PCh. 7 - Prob. 16PCh. 7 - Prob. 17PCh. 7 - Prob. 18PCh. 7 - Prob. 19PCh. 7 - Prob. 20PCh. 7 - Prob. 21PCh. 7 - Prob. 22PCh. 7 - Prob. 23PCh. 7 - 24. A 0.015-kg bullet is fired straight up at a...Ch. 7 - Prob. 25PCh. 7 - Prob. 26PCh. 7 - 28. After sliding down a snow-covered hill on an...Ch. 7 - Prob. 29PCh. 7 - Prob. 30PCh. 7 - 31. Batman (mass = 91 kg) jumps straight down from...Ch. 7 - Prob. 32PCh. 7 - 33. A 5.00-kg ball, moving to the right at a...Ch. 7 - Prob. 34PCh. 7 - Prob. 35PCh. 7 - Prob. 36PCh. 7 - Prob. 37PCh. 7 - Prob. 38PCh. 7 - *39. A girl is skipping stones across a lake. One...Ch. 7 - Prob. 40PCh. 7 - Prob. 41PCh. 7 - Prob. 42PCh. 7 - *43. An electron collides elastically with a...Ch. 7 - Prob. 44PCh. 7 - Prob. 45PCh. 7 - Prob. 48PCh. 7 - Prob. 50PCh. 7 - Prob. 51PCh. 7 - Prob. 52PCh. 7 - Prob. 54APCh. 7 - Prob. 56APCh. 7 - Prob. 58APCh. 7 - Prob. 60APCh. 7 - *63. Two ice skaters have masses m1 and m2 and are...Ch. 7 - Prob. 64APCh. 7 - Prob. 66APCh. 7 - Prob. 67CCPCh. 7 - Prob. 68CCPCh. 7 - Prob. 69TPCh. 7 - Prob. 70TP
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