11.86 years, or around that time it would take about 12 years.
Ah hah ! Thank you for that data at the end ... about the 2.5kg box.
I thought we were going to have to calculate it from Square-1.
Without checking, I'll assume that a 2.5kg box at that location really
does weigh 6.1 Newtons.
Weight (gravitational force) is directly proportional to the mass of
the object ... if you eat twice as much, you'll weigh twice as much.
So the weight of the 1kg box is
(1 / 2.5) x (6.1 N) = 2.44 Newtons .
Rocks in the mantle have a specific gravity of 3.3. Any material with s specific greater than 1 means that it is more dense than water. The mantle, making up 84% of the earth's volume, is a ductile and viscous layer of the earth that is located between the core and crust. It is composed of many elements such as: oxygen, magnesium, silicon, iron, calcium, aluminum, sodium, and potassium.
False - Every object which is not transparent and translucent reflect light. In order to see colours, the object absorb light and reflect the light we see.
