Answer:
-5.86secs
Explanation:
Using the equation of motion;
vy (final) = vy(initial) + gt
Substitute
0.0 = 57.45 + 9.81t
-57.45 = 9.81t
t = -57.45/9.81
t = -5.86secs
Hence the value of t is -5.86secs
Answer:
False
Explanation:
It takes a bout 0.3 seconded for your body to response
Answer:
Explanation:
gauge pressure due to a liquid column of density d and height h is given by the following expression .
P = hdg
The pressure depends upon height of liquid column and not on the cross sectional area .
In first cylinder .
gauge pressure = .40 atm
hdg = .40 atm
cross sectional area of cylinder = π r²
The radius of second cylinder is twice of the first , cross sectional area will be 4 times .
The volume remains the same when the liquid is poured into second cylinder
volume = cross sectional area x height .
As cross sectional area of second cylinder is 4 times , height of liquid column in second cylinder = h / 4 .
gauge pressure in second cylinder = h / 4 x d x g = hdg / 4
.40 / 4 = .10 atm
gauge pressure in second cylinder = .10 atm.
Answer:
4.38 m/s^2
Explanation:
If,
Initial velocity(u) is 9.2 m/s
Final velocity (v) is 19.1 m/s
Distance moved(s) in that period is 32 m
Therefore we use the formula,
v^2 = u^2 + 2as
; (19.1)^2 = (9.2)^2 + 2(32)a...then move the variables without a to one side..,
; 280.17 = 64a...then divide both sides by 64
; Acceleration = 4.38 m/s^2
B. A wooden desktop is the answer because wood isn’t see through