A brass rod is encased in aluminum. What happens to the speed of a sound
wave when it passes through the rod and moves from the brass into the
aluminum?
Aluminum
Copper
Lead
Brass
(70% Cu,
30% Zn)
6,420
4,700
5,010
1,960
Speed of
sound
(m/s)
A. Its speed decreases.
OB. Its speed increases.
ООО
O C. Its speed falls to zero.
OD. Its speed stays the same.
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Ответ:
B. its speed increases
Explanation:
Ответ:
• visual representation of their results
• influence the public
a. visually driven society
b. when looking at a graph of experimental results,
always ask yourself if the researchers have an ulterior
motive
Explanation:
https://www.oakparkusd.org/cms/lib5/CA01000794/Centricity/Domain/841/Organizing%20Data.pdf
i hope this helps :)