Answer:
4.2s
Explanation:
Given parameters:
Power = 2190W
Mass of box = 1.47 x 10⁴g
distance = 6.34 x 10⁴mm
Unknown:
Time = ?
Solution:
Power is the rate at which work is done;
Mathematically;
Power =
Time =
Work done = weight x height
convert mass to kg;
100g = 1kg;
1.47 x 10⁴g = 14.7kg
convert the height to m;
1000mm = 1m
6.34 x 10⁴mm gives 63.4m
Work done = 14.7 x 9.8 x 63.4 = 9133.4J
Time taken =
= 4.2s
hindi ko den alam ahh sorryyyy
<span>Foods cook faster when placed in a pressure cooker.
This is because in the pressure cooker, the pressure on the surface
of the water is greater than the normal atmospheric pressure. Under
those conditions, the boiling temperature of water is increased.
So the food can be heated to a greater temperature than the normal
boiling point of water. That means that the food gets hotter, and it
cooks through and through faster.</span>