Thursday
October 2, 2014

Homework Help: pre-algrebra

Posted by Janet on Tuesday, March 20, 2007 at 11:06am.

I just do not understand dimensional analysis. Can anybody explain this question:

32 cm = ?m
---- ----
s min

Although your dimension labels to not seem to be lined up correctly, it looks like you are being asked to convert 32 cm/s to ? meters/minute. You can do that by multiplying 32 cm/s by (1 m/100 cm)* (60 s/min), as follows:
32 cm/s x (1 m/100 cm) x (60 s/min)
= 19.2 m/min
Dimensions that appear in both numerators and denominators cancel out. Note that the numerator and denominator of the conversion factors correspond to the same actual amount of the physical quantity (i.e, 60 s = 1 minute of time)

Thank you drwls.
That helps so much!

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - I am studying dimensional analysis right now, and I get most of it, ...
Pre-Algebra - Victoria you helped me with the last problem can you help me again...
Pre-Algebra - Can anyone show me step by step how to solve this problem? 26cm/s...
Pre-Algebra - Can anyone show me step by step how to solve this problem? 26cm/s...
Pre-Algebra - Can someone show me how to solve this problem step by step?Here is...
Pre-Algebra Checkk - 1. Convert the rate using dimensional analysis. 30 miles/...
chemistry - How do I solve this question using dimensional analysis? An auto ...
Physics - Someone please help me with this. The speed of ocean waves depends on ...
chemistry - How many grams of ethylene glycol, HOCH2CH2OH, are present in 2.6 ...
Please help for my test CALculus - using the chain rule find the min and max ...

Search
Members