Answer:
The answer is 1.4×10⁻¹ inch
Step-by-step explanation:
Scientific notation is a way of writing very large or very small numbers.
Now the steps to solving this problems are as follows:
1. Length of hull = 1.4×10⁻⁴.
2 Multiplication factor = 1000, which is 10×10×10 and which can also be written as 10³ (which is read 10 to the power of 3), because 10 multiplies itself 3 times to give 1000.
Next, the question said the tear becomes 1000 times longer, which means that the original tear is multiplied by 1000 hence:
1.4×10⁻⁴ multilied by 1000 or 1.4×10⁻⁴ multiplied by 10³
= 1.4×10⁻⁴×10³.
To solve this easily I have to introduce an exponential law. and it states:
mᵃ × mᵇ = mᵃmᵇ = mᵃ⁺ᵇ. The law states that when two exponents are multiplied, the result is the same as adding the sum of their powers.
In our example; 1.4×10⁻⁴×10³, we can group the expression into like terms as follows; 1.4×(10⁻⁴×10³), then we can apply the law to the expression in bracket.
so showing just the expression in the bracket:
10⁻⁴×10³ = 10⁽⁻⁴⁺³⁾ = 10⁻¹.
putting this back into the original expression:
1.4×10⁻⁴×10³ = 1.4×10⁽⁻⁴⁺³⁾ = 1.4×10⁻¹ (in scientific notation).
you should also note that 10⁻¹ here is the same as [tex]\frac{1}{10}[/tex]. So, if were not writing it in scientific notation is will be written as 1.4 × [tex]\frac{1}{10}[/tex] = 0.14.
