Question 1: the speed of the earth's revolution around the sun is about 1.1 × 10 km / h, and the speed of sound propagation in the air is about 330 M / s. compare the two speeds Question 2: a day has 8.64 × 10 fourth power seconds, a year is calculated according to 365 days, how many seconds a year has, expressed by scientific counting method

Question 1: the speed of the earth's revolution around the sun is about 1.1 × 10 km / h, and the speed of sound propagation in the air is about 330 M / s. compare the two speeds Question 2: a day has 8.64 × 10 fourth power seconds, a year is calculated according to 365 days, how many seconds a year has, expressed by scientific counting method

1. 1 km = 1000 m; 1 hour = 3600 S. so 3.6 km / h = 1 m / s
It can be seen that: 330 M / S = 330 * 3.6 = 1188 km / h