EXERCICIOS FISICA GERAL IC113

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UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO
INSTITUTO DE CIEˆNCIAS EXATAS
DEPARTAMENTO DE F´ISICA
1a Lista de F´ısica Geral (T01-2011/01) – GABARITO
1) [G] = m3/kg · s2.
2)
a) [c1] = m , [c2] = m/s ,
b) [c1] = m/s
2 , [c2] = m ,
c) [c1] = m
2/s2 , [c2] = m/s
2 ,
d) [c1] = m , [c2] = s
−1 ,
e) [c1] = m , [c2] = m .
3)
a) 3, 1× 109W ,
b) 1, 0× 10−11m ,
c) 2, 3× 103 s ,
d) 4× 10−6 s ,
e) 4, 0× 10−5W ,
f) 4× 10−9 s ,
g) 3× 106W ,
h) 2, 5× 104m ,
4)
a) 5, 0× 101 ,
b) 5 ,
c) 6, 29 ,
d) 5, 51× 103 ,
e) 1, 144× 105 ,
f) 3, 19× 102 ou 3, 20× 102 ,
g) 5, 42× 103 ,
h) 1, 52× 104 .
5)
a) v = 3m/s, a = 0,
b) x(0) = 2m, x(1) = 5m, x(2) = 8m,
c) t = −2/3 s.
6)
a) v = −3m/s, a = 0,
b) x(0) = 2m, x(1) = −1m, x(2) = −4m,
c) t = 2/3 s.
7)
a) 2, 8m/s,
b) 10m/s,
c) 7, 6m/s.
8) 17, 1 s; 106m, 94, 1m.
9) 2 min e 23 s; 87 m.
10) 19 m.
12)
a) 1, 05× 10−1 rad/s,
b) 1, 74× 10−3 rad/s.