A strand of hair has an average mass of 2.17 x 10^-5 ounces. A grain of rice has an average mass of 0.002 ounces. How much heavier is a grain of rice than a strand of hair? Express your answer in scientific notation
To find out how much heavier a grain of rice is than a strand of hair, we need to subtract the mass of a strand of hair from the mass of a grain of rice.
The mass of a strand of hair is given as 2.17 x 10^-5 ounces.
The mass of a grain of rice is given as 0.002 ounces.
Subtracting the mass of a strand of hair from the mass of a grain of rice:
0.002 ounces - 2.17 x 10^-5 ounces = 0.0019983 ounces.
Expressing the result in scientific notation:
0.0019983 ounces = 1.9983 x 10^-3 ounces.
Therefore, a grain of rice is approximately 1.9983 x 10^-3 ounces heavier than a strand of hair.
To find the difference in mass between a grain of rice and a strand of hair, we need to subtract the mass of a strand of hair from the mass of a grain of rice.
The difference in mass is calculated as 0.002 ounces - 2.17 x 10^-5 ounces.
To subtract these values, we need to convert both values to the same unit. Let's convert the mass of a strand of hair from ounces to the same unit as the mass of a grain of rice (ounces).
2.17 x 10^-5 ounces = 0.0000217 ounces
Now we can subtract: 0.002 ounces - 0.0000217 ounces = 0.0019783 ounces
The answer is 1.9783 x 10^-3 ounces.
To find out how much heavier a grain of rice is compared to a strand of hair, we need to subtract the mass of the hair from the mass of the rice.
Given:
Mass of hair = 2.17 x 10^-5 ounces
Mass of rice = 0.002 ounces
To subtract these two values, we subtract the mass of hair from the mass of rice:
Mass difference = Mass of rice - Mass of hair
In scientific notation, we have:
(0.002 ounces) - (2.17 x 10^-5 ounces)
To subtract these values, we need to convert them to the same exponent for easier comparison:
0.002 ounces can be rewritten as 2 x 10^-3 ounces.
Now the expression becomes:
(2 x 10^-3 ounces) - (2.17 x 10^-5 ounces)
Next, we can subtract these values:
(2 x 10^-3) - (2.17 x 10^-5) = 1.9983 x 10^-3
In scientific notation, this means that a grain of rice is approximately 1.9983 x 10^-3 ounces heavier than a strand of hair.