Answer:
D
Explanation:
Because neap and spring tides happen twice a month during new moon and full moon .It occurs twice in a month which is 14 days
Let
V the speed of the girl per step
v the speed of the escalator per step
L the length between ground and floor in number of steps
V*60+v*60=L => V+v=L/60
V*90-v*90=L => V-v=L/90
By adding the equations V+v=L/60 and V-v=L/90 we get:
2V=L(3+2)/180
V=5L/360
V = L/72
Time to climb (in steps) with v=0 (escalator standing still) is:
V*t=L
t = L/V
t = L/(L/72)
t =72 steps
The girl will count 72 steps.
The correct answer to this qustion is velocity and time
Explanation:
Acceleration is the change in speed over change in time.
a = Δv / Δt
a. The car's acceleration is:
a = (80 km/h − 0 km/h) / 10 s
a = 8 km/h/s
So every second, the speed increases by 8 km/h.
b. The cyclist's acceleration is:
a = (16 m/s − 4.0 m/s) / 5.6 s
a = 2.1 m/s²
c. The stone's speed is:
10.0 m/s² = (v − 0 m/s) / 3.5 s
v = 35 m/s
d. The time is:
1.6 m/s² = (10 m/s − 0 m/s) / t
t = 6.3 s
Well talking , reading and writing are the tri skills merging for regular communication . It is most crucial to learn how to behave in a disciplined environment .Trying to help a person who does not speak the same language that you do won't be a rose walk journey . Learn to think and write complete things related to skill development and shape your personality .
Stamina to rejuvenate and think with more alacrity arouses when you read your confidence. Character sketching is one of the solution greatly can impact on thinking abilities and speaking art. Language is not just the soul of the communication but also holds integral part to satire public and attract them.
To understand more about skill development
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