Answer:
A. 2.41 s.
B. 24.3 m/s.
Explanation:
vf = vi + 2a*t
where, vf = final velocity
= 0 m/s
vi = final velocity
= 1.5 m/s
a = 9.8 m/s^2
A.
ti = 1.5/(9.8 * 2)
= 0.08 s
Vf^2 = Vi^2 + 2a*s
1.5^2 = 2 * 9.8 * s
S = 0.115 m
Time taken to drop into the water,
30.115 = 1.5*to + 4.9*to^2
to = 2.33 s
Total time taken = ti + to
= 2.33 + 0.08
= 2.41 s.
B.
Vo = 0 m/s
S = 30.115 m
Vf = ?
Using,
Vf^2 = Vo^2 + 2*a*s
= sqrt (2*9.8*30.115)
= 24.3 m/s.
Answer:
Ethnomethodology theory
Explanation:
Take note of the fact that we are told Kevin worries that the police will stop and question him even though he has not done anything wrong.
This statement shows us that Kevin already understood his society from past experiences, and thus he tries to avoid social interactions with particular member of his society (the police) who may be show discrimination towards him.
Speed (s) = momentum (M) : mass (m)
s = 275kg * m/sec : 65 kg ≈ 4,23 m/sec
P = absolute pressure in gas container connected to open-end U-tube = 116 kPa = 116000 Pa
we know that, 1 atm = 101325 Pa and 1 atm = 760 mm of Hg , hence
P = 116000 Pa (1 atm/101325 Pa) (760 mm of Hg/1 atm)
P = (116000 x 760/101325) mm of Hg
P = 870.07 mm of Hg
P₀ = atmospheric pressure = 752 mm Hg
Level of mercury is given as
P' = P - P₀
inserting the values
P' = 870.07 - 752
P' = 118 mm
so correct choice is
d. be 118 mm higher in the arm open to the atmosphere.
