Sun 29 Nov, 2020 10:28 pm - I've asked but my teacher doesn't seem to really accept the solution XD
btw can you teach me in detail how to use the image hosting service?
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Sun 29 Nov, 2020 09:09 pm - I've got a question on a book about the half-life of a radioactive substance.
The given graph stated that the activity of the radioactive material is 1000 counts per minute at t=0.
It was... (view)
Fri 28 Sep, 2018 08:17 am - Its written:
(a) A lump of plasticine sinks in water because it is denser than water.
(b) When it is moulded into the shape of a boat, it floats in the water.
(c) When the lump of plasticine is... (view)
Fri 28 Sep, 2018 07:45 am - There is difference between an open boat and a closed boat as the air inside a closed boat is contained inside while the air "on" an open boat is always moving.
A ship just as titanic... (view)
Fri 28 Sep, 2018 07:22 am - but if you make it a sphere, its volume will include the air inside
as: 22/7 x 7 cube x 4/3 = 1437.3333
and the mass of 1 cm cube of plasticine is way more heavier than 1 cm cube of air, which... (view)
Mon 24 Sep, 2018 03:41 am - In school, we are taught that when a plasticine is mould into a boat shape, it can float on the water. We were taught that by moulding the plasticine, we can increase the volume of the plasticine... (view)
