blahblah1897 3 years ago The table below compares the radioactive decay rates of two materials. Material Original mass of material (in grams) Mass of material after 60 hours (in grams) 1 208 13 2 200 50 Based on the table, which of these conclusions is most likely correct? The half-life of Material 1 and Material 2 are equal. The half-life of Material 2 is double the half-life of Material 1. The half-life of Material 2 is 30 hours more than the half-life of Material 1. The half-life of Material 1 is 30 hours more than the half-life of Material 2.

1. blahblah1897

@Lunarwolf58

2. Lunarwolf58

OK. So far i've got that the Half life of Mat. 1 Decays every 15 hours Because it decayed Four times. Mat. 2 decays every 30 Since it decayed twice...

3. Lunarwolf58

So it'd be from what im guessing B: Mat. 2's Half Life is Double Mat. 1s

4. blahblah1897

Australia is in the Southern hemisphere. Which of these statements is correct about Australia? It experiences the first day of summer at Position 3 and first day of winter at Position 1. It experiences the first day of summer at Position 1 and first day of winter at Position 3. It experiences the first day of autumn at Position 3 and first day of spring at Position 1. It experiences the first day of autumn at Position 1 and first day of spring at Position 3.

5. blahblah1897

@Lunarwolf58

6. Lunarwolf58

I THINK its B i can be wrong :/ Sorry dude But From the positioning and light thats what i seems to be

7. blahblah1897

thanks though :p

8. blahblah1897

Which of these provided the first evidence of life on Earth? ancient virus ancient bacteria non-living molecules reproducing molecules

9. blahblah1897

@Lunarwolf58

10. robinnicole218