Astudent visits the beach during a very hot day. she steps on the sand and jumps because it is so hot. what type of he transfer is demonstrated by the sand in this example

Conduction

Step-by-step explanation:

Her feet are in direct contact with the sand, so the heat from the sand is transferred directly to the soles of her feet.

The direct transfer of heat is conduction.

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