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1.A ball is orbiting counterclockwise at 100 revolutions per
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1.A ball is orbiting counterclockwise at 100 revolutions per minute (rpm) around a circle of radius 10 cm. The center of the circle is at the xy origin (0, 0). At t = 0, the ball is at (10 cm, 0).
When does the ball first reach the y axis?
2.The two vectors A and B are defined as A=(3 m, 4 m) and B=(5 m, 3 m), where the first number is XXXXX xcomponent of the vector, and the second number is XXXXX ycomponent of the vector.
What is the magnitude of vector A?
What is A + B?
3.In the year 2003 the Acme Company has twice as many employees as managers. During the next 5 years, they hire twelve employees and fire two managers. Which of the following equations is correct for the current number of managers (NM2008) and the current number of employees (NE2008)?
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Expert:
M Hasan
replied 4 years ago.
Hi there!
1.
It will take quarter of a revolution to reach the yaxis. Hence,
100 rev  60 sec
1/4 rev  t sec
100t = 60(1/4)
t = 0.15 s
Therefore, it first reaches the yaxis in 0.15 seconds.
2.
A = √(3² + 4²) = 5
A + B = (3 + 5, 4  3) = (8, 1)
3.
Please provide the relevant options so that I can guide you further.
Thanks. :)
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Customer:
replied 4 years ago.
a. N
_{M2008}
+ 2 = 2 (N
_{E2008}
 12)
b. N
_{M2008}
 2 = 2 (N
_{E2008}
+ 12)
c. 2 (N
_{M2008}
+ 2) = N
_{E2008}
 12
d. 2 (N
_{M2008}
 2) = N
_{E2008}
+ 12
e. I can't eliminate any choices.
Expert:
M Hasan
replied 4 years ago.
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