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Chima Sunday (Tutor)
31-05-2016 16:33:00 +0000
Write your question here, Keep it simple and clear to get the best answer and explanation not only from the tutor, also from our over 3000 Genius in this forum.
When your question is answered, thank the person that answered it. If its in disagreement with what you think or you need more clarification ask question. Keeping silent is an offense, lol.
what score those an intending medical student is expected to get in jamb?
31-05-2016 16:40:00 +0000
wat is d cut off mark for medice nd nursing in unimaid
31-05-2016 19:41:00 +0000
200 or 180 depending on the choice of institution
31-05-2016 19:45:00 +0000
pls when will Uniuyo's post utme commence????
01-06-2016 07:47:00 +0000
pls help out... I need the workings to this question?
An object weights 100N on the earth's surface .find its weight at a point P with orbital radius 2R (g=10Nkg-1)
01-06-2016 09:58:00 +0000
Chima Sunday (Tutor)
W = mg
So our work is to use the information given to find the mass and acceleration due to gravity at that point and then multiply them.
To start with
F = W = GMm/R2 (Newton gravitational force)
On the earth surface with radius R, W = 100N
Then 100 = GMm/R2
by subject formular m = 100R2/GM ...........(1)
Equation (1) is the mass of the object
For g at that orbital radius of 2R
F = W = mg = GMm/4R2
by subject formular, g = GM/4R2 ..........(2)
note that m cancelled each other
Now that we have our m and g, we can go ahead and multiply to obtain
W = m * g = 100R2/GM * GM/4R2 = 100/4 = 25N
Answer is Option C
01-06-2016 12:36:00 +0000
A glass of initial volume 2×10^4cm^3 is heated from 20^0C to 50^0C.If the linear expansity of glass is 9×10^-6k^-1,the volume of the bottle at 50^0C is (a)20016.2Cm^3 (b)20005.4cm^3 (c)20008.1cm^3(d)20013.5cm^3
09-06-2016 22:26:00 +0000
09-06-2016 22:28:00 +0000
09-06-2016 22:29:00 +0000
please I need answer friends pls
09-06-2016 22:30:00 +0000