Answer:
D. a cation that has a smaller radius than the atom.
Explanation:
When electrons are removed from the outermost shell of a calcium atom, the atom becomes a cation that has a smaller radius than the atom.
Explanation:
If two particles are involved in an elastic collision, the velocity of the second particle after collision can be expressed as: v2f=2⋅m1(m2+m1)v1i+(m2−m1)(m2+m1)v2i v 2 f = 2 ⋅ m 1 ( m 2 + m 1 ) v 1 i + ( m 2 − m 1 ) ( m 2 + m 1 ) v 2 i .
80 km per hour i believe. i’ll admit i’m american so we don’t use km lol, but the math should be the same. total distance = 120km, and total time = 1.5 hours. 120/1.5 = 80.
Answer:a
Explanation:
Given
two bodies are falling with negligible air Resistance and one of the body is given a slight horizontal acceleration
since there is no change in vertical acceleration therefore time taken by both bodies is same irrespective of change in horizontal direction
suppose both start from rest from a height of h
time taken

The only difference is that body with horizontal acceleration will be some distance away from first