Answer:
A. 216.36 
B. 96.56 
Explanation:
Let
be the distance in first part.
= velocity × time
= 85 × 
= 49.58 km
Let
be the distance in first part.
= 130 km
Average velocity = 
When second leg of the trip is
A. Toward north
Average velocity =
}{Total time} [/tex]
Average velocity = 
Average velocity =216.36 
B. Toward south
Average velocity =
}{Total time} [/tex]
Average velocity = 
Average velocity =96.56 
Answer:
Explanation:
Near the earth's surface where gravity is approximately 10 m/s² downward
v = u + at
v = 5 + (-10)(1) = -5 m/s
so it has the same speed but in the opposite (downward) direction.
Answer:
0.544 eV
Explanation:
To ionize the hydrogen atom 
So the required energy is
as
So 
We have to calculate the energy required to ionize hydrogen atom when it is in n=5
So the energy should be less than 
Answer:
liquid.
Explanation:
That is almost the definition of a liquid. So the answer is a liquid.
Answer:
Explanation:
Every atom has no overall charge (neutral). This is because they contain equal numbers of positive protons and negative electrons. These opposite charges cancel each other out making the atom neutral.