A boiling pot of water (the water travels in a current throughout the pot), a hot air balloon (hot air rises, making the balloon rise) , and cup of a steaming, hot liquid (hot air rises, creating steam) are all situations where convection occurs.
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Answer:
The initial velocity of the gymnast is 8.5 m/s.
Explanation:
We can use the kinematic equation

to figure out the initial velocity
of the gymnast.
Now, when the gymnast reaches the maximum height, the distance he has traveled is
, and his velocity is zero; therefore
.
Thus, we have



Answer:
Explanation:
Given
Airplane is flying with horizontally with a constant momentum during time interval 
Impulse is given by change in momentum, so there is no net impulse on the Plane because momentum is constant
(b) As there is no change in momentum therefore impulse of thrust and air drag is balanced i.e. both are equal in magnitude but act in opposite direction
Answer:
61 degrees, I just did the test.
Explanation:
Answer:
Net force ( F ) = 208 N.
Speed of car ( v ) = 68.58 m/s.
Explanation:-
The radius ( r ) = 480 m.
Mass of passenger ( m ) = 65 kg.
Horizontal force (
) = 208 N.
Vertical force (
) = 637 N.
Net vertical component of force (
) = m*g - 637 = 65 * 9.8 - 637 = 0 N.
a ) magnitude of net force .
= 208 N.
b) The speed of car.
where v is the velocity.

v² = 4704
v = 68.58 m/s.