Answer:
a)
b)
Explanation:
Given:
mass of the container,
displacement of the container,
Since the load is lifted using cable there will be weight acing downwards and the tension in the cable will act upward which will be equal in magnitude to the weight.
So,
(upwards)
Now the work done by the tension:
Now the work done by the gravity:
since displacement is in opposite direction to the gravity
To find the slope of a line:
-- pick 2 points on the line
-- find the change in 'y' as the line goes from one point to the other
-- find the change in 'x' as the line goes from one point to the other
-- divide (the change in y) by (the change in x).
-- the quotient is the slope.
This is exactly the fraction in the picture, starting with "m = ".
For the line in the picture, let's take the starting point and the ending point.
-- the change in 'y' from beginning to end is 20 meters .
-- the change in 'x' from beginning to end is 5 seconds .
-- The slope is
(20 meters) divided by (5 seconds)
= (20 / 5) (meters/seconds)
= 4 meters per second .
Water is composed of an atom of oxygen and 2 atoms of hydrogen.
Oxygen has a bonding power of 2- while an atom Hydrogen has 1+
water (h2o) has an equal ratio of positve and negative charges thus beung a polar molecule
The SI unit of power is the watt<span>, which is equal to one </span>joule/<span>per second.
So I would say Watt is the answer. Hope it helped. :)
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Answer:
0.000136kg/m3
Explanation:
13.6 / 1000 = 0.0136kg/cm3
0.0136 / 100 = 0.000136kg/m3