A strand of hair has an average mass of 2.17×10−5 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.(1 point)
To find the difference in weight between a grain of rice and a strand of hair, we subtract the weight of the strand of hair from the weight of the grain of rice.
Weight of a grain of rice = 0.002 ounces
Weight of a strand of hair = 2.17 x 10^(-5) ounces
Difference = 0.002 - 2.17 x 10^(-5) = 0.00199783 ounces
Expressing the answer in scientific notation, we get 1.99783 x 10^(-3) ounces.
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 2.17x10^-5 ounces.
The mass of a grain of rice is 0.002 ounces.
To calculate the difference, we subtract the mass of the hair strand from the mass of the rice grain: 0.002 - 2.17x10^-5.
In scientific notation, the answer is 1.99783x10^-3.
To find out how much heavier a grain of rice is than a strand of hair, you can subtract the mass of the hair from the mass of the rice.
The mass of a grain of rice is 0.002 ounces, and the mass of a strand of hair is 2.17×10^(-5) ounces.
To subtract these two values, you need to make sure their exponents are the same. In this case, you can convert 0.002 ounces to scientific notation by moving the decimal point three places to the right: 0.002 = 2.00 × 10^(-3).
Now that both values are in scientific notation, you can subtract them:
2.00 × 10^(-3) - 2.17 × 10^(-5) = (2.00 - 2.17) × 10^(-3)
The subtraction gives us -0.17 × 10^(-3).
To express this in scientific notation, we need to move the decimal point one place to the right so that the coefficient is between 1 and 9:
-0.17 × 10^(-3) = -1.7 × 10^(-4)
Therefore, a grain of rice is 1.7 × 10^(-4) ounces heavier than a strand of hair.