HOw many significant figures are in the following measurements:
a. 300 000 000 m/s
b. 25.030 C (degrees Celsius)
c. 0.006 070 C (degrees Celsius)
d. 1.004 J
e. 1.305 20 MHz
2006-07-17 16:26:26 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Explain why.
2006-07-17 16:43:41 · update #1
A.
Looking at the electromagnetic spectrum, the product of wavelenght and frequency of a wave is constant. For example, Gamma Rays;
wavelenght 3e-14 m x frequency 10^22 Hz = 300 000 000. The same number is given for the product of all waves on the spectrum.
B. Insignificant
C Insignificant
D
The heat capacity of air is 1.004 J/gK or it requires 1.004 joules of heat to increase the temperature of a gram of sair one degree . The heat capacity of sand as 0.84 J/gK. So it takes a little more energy to heat a gram of air one degree than it takes to heat up a gram of sand. By comparison, it takes over 4 times as much energy to heat up water.
E. Insignificant
2006-07-17 17:49:20 · answer #1 · answered by digitalhandout 3 · 0⤊ 0⤋
The answers are as follows
a.0
b.3
c. 6
d. 3
e 5
2006-07-18 02:05:08 · answer #2 · answered by Sherlock Holmes 6 · 0⤊ 0⤋
Eighteen?
2006-07-17 23:33:42 · answer #3 · answered by cherodman4u 4 · 0⤊ 0⤋
Look it up in your text book as I threw mine away!
2006-07-18 01:08:45 · answer #4 · answered by Questore 2 · 0⤊ 0⤋
i think b-e are significant.. a is the constant for light, right? i dont know if the others are constants.
2006-07-17 23:30:23 · answer #5 · answered by deluxe_pow 3 · 0⤊ 0⤋
a.0
b.3
c. 6
d. 3
e 5
2006-07-17 23:30:59 · answer #6 · answered by idiot detector 6 · 0⤊ 0⤋
d is the correct and my final answer.
2006-07-17 23:28:27 · answer #7 · answered by Smarty Panties 2 · 0⤊ 0⤋
1
4
3
4
6
2006-07-17 23:34:20 · answer #8 · answered by barbie 2 · 0⤊ 0⤋
b I think
2006-07-17 23:30:55 · answer #9 · answered by I sk8 4donutz 3 · 0⤊ 0⤋