Hi , I think that the elements that have one valence electron and that are in the alkali metals are the answers .
1.lithium
2.sodium
3.potassium
4.rubidium
5.cesium
6.francium
You double the strength of the electromagnet. The number of coils and the strength of the electromagnet are proportional.
Acceleration= velocity/time
1.1/2.7=0.41
The acceleration is .41 m/s^2
The horizontal component of speed remains constant at 10 m/s.
After 1 s, a vertical component of speed = gt = 9.8(1) = 9.8 m/s is added to the horizontal speed.
The size of the total speed of the ball after 1 s = √(10²+9.8²) = √196.04 ≈ 14.0 m/s <=
You are correct.
Diffusion should be your answer glad to help
