Correct Answer to Question 450: b) is correct. In this calculation you add exponents:102 x 104=10(2+4)=106.
Help: Fundamentals of Sound, Sec. 10-L.
Return to Question 450.
Correct Answer to Question 455: c) is correct. To move the decimal one place to the left you increase the exponent by 1. 36.7 x 105=3.67 x 10 x 105=3.67 x 101 x 105=3.67 x 106
Help: Fundamentals of Sound, Sec. 10-J.
Return to Question 455.
Correct Answer to Question 460: c) is correct. To move the decimal one place to the right you add -1 to the exponent. 0.283 x 10-6=2.83 x (1/10) x 10-6= 2.83 x 10-1 x 10-6=2.83 x 10-7
Help: Fundamentals of Sound, Sec. 10-J.
Return to Question 460.
Correct Answer to Question 465: a) is correct. To divide one power of ten by another you subtract the exponent in the denominator from that in the numerator. 10-2/10-6= 10-2-(-6)= 10-2+6 = 104
Help: Fundamentals of Sound, Sec. 10-L.
Return to Question 465.
Correct
Answer to Question 470: c) is correct. To add numbers with different
powers of ten you must put both into the same power of ten. One way is to write
8 x 106 =0.8 x 107. Now both numbers have the same power
of ten. Simply add the numbers:
7 x 107
-0.8 x 107
_________
6.2 x 107
Help: Fundamentals of Sound, Sec. 10-K.
Return to Question 470.
Correct
Answer to Question 472: d) is correct. To add numbers with different powers
of ten you must put both into the same power of ten. You might write 0.3 x 10-1
= 30 x 10-3. Now both numbers have the same power of ten. Simply
add the numbers:
5 x 10-3
30 x 10-3
_________
35 x 10-3.
This last number is equivalent to 3.5 x 10-2.
Help: Fundamentals of Sound, Sec. 10-K.
Return to Question 472.