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 the difference in mass between a grain of rice and a strand of hair, we subtract the mass of the hair from the mass of the grain of rice.
Mass of grain of rice = 0.002 ounces
Mass of strand of hair = 2.17 x 10^-5 ounces
Difference in mass = 0.002 - 2.17 x 10^-5
= 0.00199783 ounces
Since 0.00199783 is between 1 and 10, we can write it in scientific notation as 1.99783 x 10^-3.
Therefore, a grain of rice is 1.99783 x 10^-3 ounces heavier than a strand of hair.
To find out how much heavier a grain of rice is than a strand of hair, we need to subtract the mass of the hair strand from the mass of the grain of rice.
The mass of a grain of rice is 0.002 ounces, and the mass of a hair strand is 2.17 x 10^-5 ounces.
To subtract these two values, we can use scientific notation. The exponent in the scientific notation represents the power of 10 that needs to be multiplied.
First, let's convert the mass of the grain of rice to scientific notation:
0.002 ounces = 2 x 10^-3 ounces
Now, subtract the mass of the hair strand from the grain of rice:
2 x 10^-3 ounces - 2.17 x 10^-5 ounces
To subtract these values, we need to ensure that the exponents are the same. In this case, we can rewrite the mass of the hair strand as 0.0217 x 10^-3 ounces.
Now, we can subtract the values:
2 x 10^-3 ounces - 0.0217 x 10^-3 ounces = 1.9783 x 10^-3 ounces
Therefore, a grain of rice is 1.9783 x 10^-3 ounces heavier than a strand of hair.
Is that correct?
To find out how much heavier a grain of rice is than a strand of hair, we need to subtract the mass of the hair strand from the mass of the rice grain.
The mass of a grain of rice is given as 0.002 ounces, and the mass of a hair strand is given as 2.17 x 10^-5 ounces.
To subtract the two values, we can use scientific notation. Let's convert the mass of the grain of rice to scientific notation:
0.002 ounces = 2 x 10^-3 ounces.
Now, we can subtract the two values:
2 x 10^-3 ounces - 2.17 x 10^-5 ounces.
To subtract these values, we need to express them using the same exponent. In this case, we can rewrite 2 x 10^-3 ounces as 20 x 10^-4 ounces:
20 x 10^-4 ounces - 2.17 x 10^-5 ounces.
Now we can subtract the values:
20 x 10^-4 ounces - 2.17 x 10^-5 ounces = (20 - 2.17) x 10^-4 ounces.
Simplifying further:
(17.83) x 10^-4 ounces.
The result is 17.83 x 10^-4 ounces.
Therefore, a grain of rice is 17.83 x 10^-4 ounces heavier than a strand of hair.