Carbon 14 because it has an approximate half life of 5000 years.
(10)an object will continue to travel at a constant speed unless acted by an unbalanced force according to newtons second law every force acted on a body has a equal and opposite reaction so the speed and the direction of the object will change.
(9) balanced force (i think so )
hope this is what you needed the 10th one is for understanding you can shorten it after reading and i think what i have written is not wrong :P:P:P;p:P:):):):D=) for the ninth one i am not sure but i think so :P:)=)
Friction is helpful:
- We use it to brake for cars
- We use it to fly planes
-We wouldn't be able to turn a door knob without friction ( Our hand would just slide off it)
Friction harmful:
-Our cars would get much better gas mileage without tire and air friction
- There would be no skinned knees if friction didn't exist (Like when your skating or football)
- We could do some pretty cool dance moves without friction
- Our shoes would last longer without friction
Answer:
General chemical equation
2 M + 3 X₂ → 2 MX₃
Explanation:
When metal reacts with halogens metal halide as a product obtained.
Now oxidation state of metal assume (+3)
and oxidation state for halogen = (+1)
So formula of the metal halide is (MX₃)
Denote the metal as M and halogen as X
the balanced chemical equation
2 M + 3 X₂ → 2 MX₃
So the resulted general equation when metal react with halogen is
2 M + 3 X₂ → 2 MX₃
