Answer:
your answer should be astronomy
Explanation:
Answer:
The orbital period of the planet is 387.62 days.
Explanation:
Given that,
Mass of planet
Mass of star 
Radius of the orbit
Using centripetal and gravitational force
The centripetal force is given by


We know that,

....(I)
The gravitational force is given by
....(II)
From equation (I) and (II)

Where, m = mass of planet
m' = mass of star
G = gravitational constant
r = radius of the orbit
T = time period
Put the value into the formula





Hence, The orbital period of the planet is 387.62 days.
The total oxygen atoms that are exprected in the vinegar and baking soda reaction is three oxygen atoms.
Answer: B. 3
why;live
Answer:
a) 
b) 
Explanation:
The energy of the photon (E) for
orbit of the hydrogen atom is given as:

where,
= 13.6 eV
n = orbit
a) Now for the transition from n = 4 to n = 5


b) Now for the transition from n = 5 to n = 6

