Adding scientific notation question =)

[dolpho]

Homework Statement

Add (9.8x10^3s)+(9.9x10^4s)+(0.017x10^6s)

Homework Equations

None

The Attempt at a Solution

I have entered 125800, as well as 1.26x10^5 but the website marked both of those wrong. I've done this problem every way you could do it I think and it comes out to the same answer but the program won't accept it.

 

[SammyS]

I presume this has to do with significant digits a.k.a significant figures.

(9.8x10³s) + (9.9x10⁴s) + (0.017x10⁶s) = (0.98x10⁴s) + (9.9x10⁴s) + (1.7x10⁴s)

 

[dolpho]

I presume this has to do with significant digits a.k.a significant figures.

(9.8x10³s) + (9.9x10⁴s) + (0.017x10⁶s) = (0.98x10⁴s) + (9.9x10⁴s) + (1.7x10⁴s)

So I worked out your problem also and it gave me 125800 and it just says add, but I'm guessing it doesn't want the answer but what you gave instead. Ugh I hate mastering physics... :(

 

[Borek]

Add (9.8x10^3s)+(9.9x10^4s)+(0.017x10^6s)

I have entered 125800, as well as 1.26x10^5

You were already pointed to significant figures. Both numbers you have tried have too many.

 

[rwisz]

I understand your frustration with the program not accepting your answer. However, it is important to note that in scientific notation, we only add or subtract the numbers in front of the exponential term, not the exponential terms themselves. Therefore, the correct answer would be 1.26x10^5s. It is possible that the program is looking for a specific format for the answer, such as using scientific notation with a certain number of significant figures. I suggest double checking the instructions or reaching out to the program administrator for clarification. Keep up the good work with your calculations!