In cats, the long hair trait is dominant and the short hair trait is recessive. What is the chance of a homozygous short-haired offspring if a heterozygous long-haired male mate with a short-haired?

the chance of a homozygous short-haired offspring if a heterozygous long-haired male mate with a short-haired is 50%

Explanation:

The best way to see this is to simply draw a punnett square. As you've said, let's call  

S

the dominant trait (short hair) and  

s

the recessive trait (long hair):

As shown in the image i uploaded:

As you can see, out of the 4 possible outcomes, 2 will result in short hair, and 2 in long. So, you'd have a  chance of getting a short haired cat.

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.