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 in a strand of hair? Express your answer in scientific notation
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 strand of hair from the mass of the grain of rice.
The mass of a grain of rice is given as 0.002 ounces, and the mass of a strand of hair is given as 2.17 x 10^-5 ounces.
Subtracting the mass of the hair from the mass of the rice gives us:
0.002 ounces - 2.17 x 10^-5 ounces
To subtract these values, we need to ensure that they have the same order of magnitude. In this case, we can convert 0.002 into scientific notation as well.
0.002 in scientific notation is 2 x 10^-3.
Now, we can perform the subtraction:
2 x 10^-3 - 2.17 x 10^-5
Since these values have the same order of magnitude, we can directly subtract the coefficients while keeping the same exponent:
2 - 2.17 = -0.17
So, the difference in mass is -0.17 x 10^-3 ounces.
The answer expressed in scientific notation is approximately:
-1.7 x 10^-1 ounces.
To determine the weight difference between a grain of rice and a strand of hair, you can subtract the mass of the hair from the mass of the grain of rice.
The mass of a grain of rice is given as 0.002 ounces, and the mass of a strand of hair is given as 2.17 x 10^-5 ounces.
To subtract the mass of the hair from the mass of the grain of rice, we subtract the two quantities:
0.002 ounces - 2.17 x 10^-5 ounces = 0.002 - 0.0000217 = 0.0019783 ounces.
Expressing this answer in scientific notation, we can write:
0.0019783 ounces = 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.
To determine how much heavier a grain of rice is compared to a strand of hair, we need to find the difference in their masses.
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.
To find the difference, we subtract the mass of the strand of hair from the mass of the grain of rice:
0.002 - 2.17 x 10^-5 = 0.00199783
In scientific notation, this is approximately 1.99783 x 10^-3 ounces.
Therefore, a grain of rice is approximately 1.99783 x 10^-3 ounces heavier than a strand of hair.