A stand of a 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 stand 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 stand of hair from the mass of a grain of rice.
The mass of a grain of rice is 0.002 ounces.
The mass of a strand of hair is 2.17 x 10^-5 ounces.
Subtracting these two values, we get:
0.002 - 2.17 x 10^-5 = 0.001999783
To express this number in scientific notation, we move the decimal point one place to the left and multiply by 10:
0.001999783 = 1.999783 x 10^-3
Therefore, a grain of rice is approximately 1.999783 x 10^-3 ounces heavier than a strand of hair.
To find 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.
Mass of a strand of hair: 2.17 x 10^-5 ounces
Mass of a grain of rice: 0.002 ounces
To subtract these values, we convert both values to the same exponent.
2.17 x 10^-5 ounces = 0.0000217 ounces
Now we can subtract:
0.002 ounces - 0.0000217 ounces = 0.0019783 ounces
To express the answer in scientific notation, we need to rewrite it as:
1.9783 x 10^-3 ounces
Therefore, a grain of rice is 1.9783 x 10^-3 ounces heavier than a strand of hair.
To find 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 average mass of a strand of hair is given as 2.17 x 10^-5 ounces.
The average mass of a grain of rice is given as 0.002 ounces.
To calculate the difference, we subtract the mass of the hair strand from the mass of the grain of rice:
0.002 ounces - 2.17 x 10^-5 ounces = 0.002 - 0.0000217 = 0.0019783 ounces.
The result is 0.0019783 ounces.
Expressed in scientific notation, 0.0019783 ounces can be written as 1.9783 x 10^-3 ounces.
Therefore, a grain of rice is approximately 1.9783 x 10^-3 ounces heavier than a strand of hair.