Answer: B
Cohesion makes water stick together, which is vital in transporting nutrients from tree roots to other parts of the plant.
Answer:
1.62 meters
Explanation:
For an approximate result, divide the feet (height) by 3.3 to get your approximate meters (height).
Answer:
30m/s
Explanation:
Suppose there's no friction between the office chair and the floor. The only thing that impact the motion of the boy is the ejected carbon dioxide. We can apply the law of momentum conservation to find the his (the boy, the chair and the empty extinguisher) after the extinguisher is emptied.
Before the ejects, the system momentum is 0, due to at rest and no speed
After the ejects, momentum of the carbon dioxide is
9*20 = 180 kg m/s
The momentum of his is then
P + 180 = 0
P = -180
MV = -180
(26 + 16 + 18)V = - 180
V = -180/(26 + 16 + 18) = -30 m/s
So he would have a speed of 30m/s in the opposite of the ejected carbon dioxide direction
Oceanic crust is much denser than continental crust. This is why at convergent boundaries where oceanic and continental plates meet, the oceanic plate subducts into the upper mantle. This is also why continental plates tend to rise above oceanic plates. The reasons for this include different organic composition as well as pressure (due to gravity pulling upon the air and water).
Explanation:
Given that,
Average force exerting on the golf club, F = 1000 N
Mass of the ball, m = 0.045 kg
Initial speed of the ball, u = 0
The time of contact between the ball and the club,
1. Let v is the speed of the golf ball as it leaves the tee. The product of force and time is equal to the change in its momentum as :
v = 40 m/s
2. Force applied by the batter, F = 8000 N
Time,
Let J is the magnitude of the impulse delivered to the baseball. It is equal to the product of force and time as :
J = 8.8 kg-m/s