What is 3,920,000,000,000 in scientific notation? 3.92×1010

3.92×1012

3.92×10−10

3.92×10−12

In writing numbers in their scientific notation, we must first move the decimal point until our number has only a one's digit. From the given number, , it would look like this . Because, we can't fundamentally change the number we need to multiply our new number, with where is the number of how many times we moved the decimal point to the left. If we moved our decimal to the right, would be negative. Since we moved it to the left by times, .

Now we multiply with . It is

i'm pretty sure its b i might be wrong though!

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.