Science
8:00
Course
9-10
Mode
mixed
Answered
0/10
Local
0
Curated
10
easy 2
medium 8
hard 0
Question 1 of 10
medium
What is the speed of light in a vacuum?
A
300,000 km/s
B
150,000 km/s
C
500,000 km/s
D
1,000,000 km/s