Answer:
D. 24 m
Explanation:
Running up - velocity + 30 m/min
Escalator 's moving down velocity - 24 m/min
Sum velocity (30 - 24) = 6 m/min
6 m/min * 4 min = 24 m
Gravitational pull changes between each planet while its the "MASS" which doesnt change
Answer:
From C to D, kinetic energy is transformed into gravitational potential energy.
i think
No you can not
atleast as far as i know
Use Bernoulli equation with the following assumptions.
1) velocity of the milk on the top is near 0, because the hole is so small that the level of milk will descend slowly, compared with the velocity of the outflow.
2) Pressure on the top = pressure on the bottom. This means that we consider that the top is open to the atmosphere.
Then, the terms of pressure cancel, and Bernoulli's equation leads to:
Z1 + p1/(d*g) + (V1)^2/(2g) = Z2 + p2 /(d*g) + (V2)^2 /(2g)
=> (V2)^2 = 2g (Z1 - Z2)
g = 9.8 m/s^2
Z1 - Z2 = 5cm
(V2)^2 = 2*(9.8 m/s^2)*(0.05m) = 0.98 m^2/s^2
V2 = 0.99 m/s
