Answer:
Explanation:
Answer: Let ke = 1/2 IW^2 = 1/2 kMr^2 W^2 be Earth's rotational KE. W = 2pi/24 radians per hour rotation speed and k = 2/5 for a solid sphere M is Earth mass, r = 6.4E6 m.
Then ke = 1/2 2/5 6E24 (6.4E6)^2 (2pi/(24*3600))^2 = ? Joules. You can do the math, note W is converted to radians per second for unit consistency.
Let KE = 1/2 KMR^2 w^2 be Earth's orbital KE. w = 2pi/(365*24) radians per hour K = 1 for a point mass. Note I used 365 days, a more precise number is 365.25 days per year, which is why we have Leap Years.
Find KE/ke = 1/2 KMR^2 w^2//1/2 kMr^2 W^2 = (K/k)(w/W)^2 (R/r)^2 = (5/2) (365)^2 (1.5E11/6.4E6)^2 = 7.81E9 ANS
Answer:
because the gravitational pull is maximum at the poles and decreases as it comes down toward the equator.
Answer:
Look to the explanation
Explanation:
<u><em>Average velocity:</em></u> is the average rate of change of displacement with
respect to time
Average velocity is a measure for distance traveled in a given time
We can calculate the average velocity by the rule 
where s is the displacement and t is the time
<u><em>Instantaneous velocity:</em></u> is the velocity of an object in motion at a
specific point (x , t)
instantaneous velocity is the limit of velocity as the change in time
approaches zero
We can calculate the instantaneous velocity by the rule 
<u>Average velocity</u> is <u>equal</u> to the <u>instantaneous velocity</u> when
<u>acceleration</u> is <u>zero</u>
Hi there!
Recall the equation for kinetic energy:

KE = Kinetic energy (J)
m = mass (kg)
v = velocity (m/s)
Plug in the given values:

Answer:
a

b

Explanation:
From the question we are told that
The number of identical drippers is n = 60
The diameter of each hole in each dripper is
The diameter of the main pipe is 
The speed at which the water is flowing is 
Generally the amount of water used in one hour = 3600 seconds is mathematically represented as

Here A is the area of the main pipe with value

=> 
=> 
So
=> 
=> 
Generally the area of the drippers is mathematically represented as

=> 
=> 
Generally from continuity equation we have that

=> 
=> 