Determine the mechanical energy of this object:
a 1kg ball sits on a 10 meter high cliff

a.980j

b. the ball isn't moving. so the mechanical energy is zero

c.98j

d. 10j

anaphase.

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relative humidity is a measure of the amount of moisture in the air relative to the total amount of moisture the air can hold.

so d

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