Answer: The correct answer is an emission line spectrum.
Explanation:
When the electrons are excited to the higher energy level, the energy is absorbed in this case.
When the electrons in the atom step down to lower energy levels in a thin cloud of hot gas then the radiation will emit.
The electron will lose energy in this case in the form of radiation. There will be an emission line spectrum.
Answer:
P.E = mgh
K.E = 1/2mv²
Explanation:
P.E = mgh
That is m= mass in kilograms, g=acceleration due to gravity and h= height in meters.
K.E = 1/2mv²
That is 1/2 of an object's mass multiplied by the velocity squared.
Answer: "People will say the length of a day is determined by just the rotation rate of a planet, but that isn’t entirely true. The orbit around its sun also factors in. What we define as a day is the time between when the Sun is highest in the sky until the next time the Sun is at the highest point in the sky. This isn’t just the time it takes the Earth to rotate once on its axis, though. This is because, as the Earth is rotating, it’s also moving relative to the Sun"
Answer:
a) 
b) 
c) 
d) 
Explanation:
Given:
- distance down the field in the first interval,
- time duration of the first interval,
- distance down the field in the second interval,
- time duration of the second interval,
- distance down the field in the third interval,
- time duration of the third interval,
a)
velocity in the first interval:
b)
velocity in the second interval:
c)
velocity in the third interval:
d)
We know that the average velocity is given as the total displacement per unit time.
the answer is A *but I am not sure*
