Use the EE or EXP key on that calculator. You will have one or the other, but not both. This key has been designed to enter numbers in scientific notation. If you are using the 10x key, then you should stop because that key was not designed for scientific notation. **To enter 3.0 x 108, all you have to type in is ** ...
First, I would use a scientific calculator. On that calculator, there is either an “EE” key, an “EXP” key, or a “x10^x” key. There will only be one not all three. I will assume it is “EE” because that is the most popular. This key abbreviates “times ten raised to the.” Thus, if I wanted to enter the number 1.43×10^-23 ...
In the first part of this example, you have: (405 nm/1) x (10-9 m/1nm) When you multiply 405 by 10-9, you get 405 x 10-9 This is not standard scientific notation, because there is no decimal place in 405. To get it into scientific notation, move the decimal to the left 2 places. This decreases 405 by a factor of 10...
Usually, the decision about whether or not to use scientific notation is up to you. An answer of 1.2×103 is equivalent in EVERY WAY to 1200. Thus, you can answer either way. But be sure to check to see if the question states how the answer needs to be given. There is one condition under which scientific notation MUST...
In the first part of this example, you have (6.63 x 10-34 J/Hz) x (2.3 x 1016 Hz) You multiply the numbers: 6.63 x 2.3 = 15 then the exponents. Since you are multiplying, you add the exponents: (10-34) x (1016) = 10(-34 +16) = 10-18 Thus, the answer is 15 x 10-18, but that is not standard. To make it standard, yo...