Inquiry into Physics
8th Edition
ISBN: 9781337515863
Author: Ostdiek
Publisher: Cengage
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Textbook Question
Chapter 3, Problem 39P
. In the annual Empire State Building race, contestants run up 1,575 steps to a height of 1,050 ft. In 2003, Australian Paul Crake completed the race in a record time of 9 min and 33 S, Mr., Crake weighed 143 lb (65 kg)
,
(a) How much work did Mr., Crake do in reaching the top of the building?
(b) What was his average power output (in ft-lb/s and in hp)?
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Hello, please help with how to calculate impact velocity and rebound velocity. Thanks!
A object of mass 3.00 kg is subject to a force FX that varies with position as in the figure below.
Fx (N)
4
3
2
1
x(m)
2 4 6 8 10 12 14 16 18 20
i
(a) Find the work done by the force on the object as it moves from x = 0 to x = 5.00 m.
J
(b) Find the work done by the force on the object as it moves from x
= 5.00 m to x = 11.0 m.
]
(c) Find the work done by the force on the object as it moves from x = 11.0 m to x = 18.0 m.
J
(d) If the object has a speed of 0.400 m/s at x = 0, find its speed at x = 5.00 m and its speed at x
speed at x = 5.00 m
speed at x = 18.0 m
m/s
m/s
=
18.0 m.
An EL NIÑO usually results in
Question 8Select one:
a.
less rainfall for Australia.
b.
warmer water in the western Pacific.
c.
all of the above.
d.
none of the above.
e.
more rainfall for South America.
Chapter 3 Solutions
Inquiry into Physics
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