Answer:
Convection is equal to the conduction plus fluid flow.
Explanation:
Convection is a mode of heat transfer that requires the movement of the molecules of the medium from one point to another. It takes place majorly in fluids (liquids and gases). While conduction is a process by which heat is transfered by the vibtation of molecules of a medium at their possitions, thereby colliding with other neighbouring molecules to transmit heat.
Before convection could occur, there must be conduction of heat by the molecules of the medium which causes their motion. According to the kinetic molecular theory, any molecule of the medium close to the source of heat conducts heat, becomes less dense and thus moves so that its initial position would be occupied by another denser molecule. This continous process generate convection or convectional current. Therefore, convection is as a result of conduction and fluid flow because a molecule must first conduct heat before it moves.
Answer:
it wont fly away
Explanation:
depending how tight the knott and find it is going to be stuck to the pole
The correct answer you should be looking for is complementary. :)
Looking for t, the computation would be:
t = 2[initial vertical velocity] / g = 2u/g
=> 9 = 2u/9.81
or u = 9 x 9.81 / 2 = 44.16 m/s (upwards)
conservation of energy: loss in potential energy(mgh) would be equal to gain in kinetic energy (½mv²)
=> ½mv² - ½mu² = mg29
=> v² = 58(9.81) + 44.16^2
= 568.98 + 1950.1056 = 2519.0856
getting the square root will give us the speed of the rock, which is:
=> v = √[2519.0856] ~= 50.19 m/s (directed downwards)
ANY DENSE OBJECT
A mathematical equation for density is: Density = mass/volume or D = m/v. If something has a large mass compared to its volume, it has a high density. This is like a set of weights which can be small but heavy. But if an object has a small mass compared to its volume it has a lower density.
Pls give me a brainliest if this helps thx
