Convection is the rise of hot air and the drop of cold air due to a large amount of molecules being moved usually in gas form.\
Hope this helps!
Answer:
0.619 cm
Explanation:
V = 2.17 m/s, diameter internal, D = 1.60 cm
v = 14.5 m/s, inside diameter, d = ?
According to the equation of continuity,
A V = a v
3.14 x (1.60/2)^2 x 2.17 = 3.14 x (d/2 )^2 x 14.5
5.5552 / 4 = d^2 x 3.625
d = 0.619 cm
Answer:
scientists will use absolute dating to find how old a fossil exactly is.
Answer:
more than 500 n i think the answer will
-- In order to achieve constant verlocity, the net force on the mass must be zero. So if there ARE any forces acting on it, they must be balanced.
-- There is already a force on the mass that can't be eliminated . . . the force of gravity.
-- That force due to gravity is (mass x gravity) = (25 kg)(9.8 m/s²) = <em><u>245N</u></em> in the <u><em>downward</em></u> direction.
-- In order to 'balance' the forces and make them add up to zero, we have to provide another force of <em>245N</em>, all in the <em>upward</em> direction.
-- Then the forces on the object will be balanced, the NET force on it will be zero, and whichever way you start it moving, it will continue to move at a cornstant verlocity.
