Answer: I believe is A
Explanation: days are shorter in the winter
This is a nuclear fission reaction, in which a larger nucleus is bombarded with a neutron to make it break down into two smaller nuclei and release energy.
The added weight of the sand puts more downward pressure on the wheels contacting the rails, which would cause the trains speed to decrease.
Answer:
I believe the answer is C
Explanation:
Speed= distance/time
Speed= 150000m/7200s=20.83m/s(cor.to.2d.p.)