1/2 * m * v ^ 2 = mgh
torricelli's law is given by the equation above , where m represents the mass , h represents the height , v represents the velocity , and g is a constant . according to the equation for torricelli's law , which of the following is equivalent to the velocity , v ?

a. 2gh
b. 1/2ghm^2
c. the square root of 2gh
d. the square root of 1/2mgh

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o