Q1=Q2
m1c1(t-t1)=m2c2(t2-t)
67.9kg * c1* (38.7°C-37.1°C)=50.2kg * 4186 J/kg°C * (40.5°C-38.7°C)
67.9kg* c1 * 1.6°C = 50.2kg * 4186 J/kg°C * 1.8°C
108.64 kg°C * c1 = 378246.96 J
c1 = 378246.96J /108.64kg°C
c1=3481.65 J/kg°C
Explanation:
the formula is given by :
F=<u>Gm'•m"/</u> r²
where F is the force pulling them towards each other
G is the universal gravitational constant
m'andm" are the masses in contact
and r is the separation between the balls
so we just need to substitute the values and find r ,the gravitational constant is 6.67x10-¹¹. r=Gm'm"/F
Answer:
pretty sure it's true....
Because different materials have different molecular organizations.