
Share that Question here
Physics
Chima Sunday (Tutor)
31052016 16:33:00 +0000Write 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.
Best Wishes!!!

Jennifer Sparkle
what score those an intending medical student is expected to get in jamb?
2 31052016 16:40:00 +0000

Majiri E
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=10Nkg1) A 40N B 35N C 25N D 20N
2 01062016 09:58:00 +0000

Chima Sunday (Tutor)
Simple Solution
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/R^{2} (Newton gravitational force)
On the earth surface with radius R, W = 100N
Then 100 = GMm/R^{2}
by subject formular m = 100R^{2}/GM ...........(1)
Equation (1) is the mass of the object
For g at that orbital radius of 2R
F = W = mg = GMm/4R^{2}
by subject formular, g = GM/4R^{2} ..........(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 = 100R^{2}/GM * GM/4R^{2} = 100/4 = 25N
Answer is Option C2 01062016 12:36:00 +0000

Emmanuella Amarachi
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
2 09062016 22:26:00 +0000

Emmanuella Amarachi
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
2 09062016 22:28:00 +0000

Emmanuella Amarachi
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
2 09062016 22:29:00 +0000

{[reply.name]}
{[reply.voteCount]} {[reply.voteCount]} {[reply.created]}
{[reply.voteCount]} {[reply.created]}