What is the power of each of the following studies using a t

What is the power of each of the following studies, using a t test for dependent means

(based on the .05 significance level)?

can you also show me how its done please just 1 example is fine! thank you.

a) Small 50 two

b) Medium 50 two

c) large 50 two

d) small 10 Two

e) small 40 Two

f) small 100 two

g) small 100 one