Answer:
38.1 N
Explanation:
The electrostatic force between two charged objects is given by:
where
k is the Coulomb's constant
q1 and q2 are the two charges
r is the separation between the two objects
In this problem, we have
so, the electrostatic force is
If they both start from the same height, then they both hit the ground at the
same time. It makes no difference if their horizontal speeds aren't equal.
The cannon ball still accelerates downward at the same rate as the baseball.
Answer:
5.4m/s
Explanation:
Given parameters:
Distance = 43m
Time = 7.9s
Unknown:
Speed = ?
Solution:
Speed is mathematically expressed as;
Speed =
Insert the parameters and solve;
Speed = = 5.4m/s
A constellation is a group of stars in the sky.
If the group seems to form a pattern, or resemble anything,
it really has nothing to do with the constellation. The human
brain has evolved to seek and find patterns in what we see,
a habit of mind that turns out to have great survival value.
There's nothing "wrong" with seeing a pattern there. It's
a very natural, very human thing to do. But understand ...
the stars are not forming anything or doing anything. The
scorpion, the might hunter, the dog, the fish, the dragon,
the queen on her throne, the patterns ... are all in your mind.
3, 1 could be.
And there's always Heisenberg's uncertainty principle !!!