Answer:
3 m/s east
Explanation:
I took a test a got it right
Answer:
F. Either B or C
Explanation:
The beat frequency is the difference of two frequencies of two waves.
Here, one wave has frequency 610 Hz and the beat frequency is 3 beats per second.
It is not mentioned which has a higher frequency. So, there are two possiblities.

or

Hence, the frequency of the other wave is 613 or 607.
Answer:
16 % and 9 %
Explanation:
Accurate reading = 10 N
reading of first balance = 8.4 N
reading of second balance = 9.1 N
Percentage difference in first reading
= 
=
= 16 %
Percentage difference in second reading
= 
=
= 9 %
Folded mountains occur when the rocks push against each other.