Question

The distance from the Earth to the Sun is: 150,000,000 km. In scientific notation it is? The speed of light is about 300,000,000 m / s. In scientific notation it is?The mass of an ant in scientific notation is:?A hydrogen atom has a diameter of 5 x 10-⁸mm. In usual form it is:?The population of people on Earth is approximately 6.8 x 10 °, it is usually written:?24 x 102, is it spelled correctly in scientific notation? Write true or false and why?0.34 x 10-² is spelled correctly in scientific notation? Write true or false and why?

Answer 1

150,000,000 km

To write a number in scientific notation we have to multiply it by 10 raised to the number of places that the decimal point moved:

1.5 x 10^8

Since we moved the decimal point 8 places to the left, we have to raise 10 to the 8th power.