q1 the earth's surface is affected by the sun in many ways. the diagram below shows the earth and sun's light rays during a certain time of the year. which of the following best describes what people are experiencing at location x on earth? a. the first days of summer b. the season with the longest days c. the first days of fall d. the coldest season of the year
q2 people often place ice into a warm liquid to make their drink colder. which statement best explains how ice makes a liquid colder?
the ice pushes cool air into the liquid’s solid container.
coldness flows from the colder ice into the warm liquid.
heat flows from the warm liquid into the colder ice.
the ice changes the chemical properties of the warm liquid.
q1 ... No diagram.
q2 ... c
electrical potential energy =0.072 j
electrical potential energy is given by
u= q δv
q= charge=6 c
δv= potential difference and is given by
δv= e d
e= electric field
d= distance=5 mm=0.005 m
δv=2.4 (0.005)=0.012 v
now electric potential energy= u= q δv
q1 the earth's surface is affected by the sun in many ways. the diagram below shows...