The repeated rising and sinking of water during boiling is due to convection. It <span>is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it. Hope this answers the question.</span>
Answer:
250 cm³
Explanation:
given,
Length of the Box, L = 5 cm
Width of Box, W = 5 cm
height of the box, H = 10 cm
Volume of the Box = L W H
V = 5 x 5 x 10
V = 250 cm³
Volume of the box is equal to 250 cm³
1. The time taken for the body to fall to ground is 4 s
2. The vertical component of the velocity when the body falls to the ground is 39.2 m/s
3. The distance from the rock when it strick the ground 10m/s is 40 m
<h3>1. How to determine the time </h3>
- Height (h) = 80 m
- Horizontal velocity = 20 m/s
- Time (t) =?
h = ut
80 = 20 × t
Divide both sides by 20
t = 80 / 20
t = 4 s
Thus, it will take the body 4 s to land on the ground.
<h3>2. How to determine the vertical component of the velocity</h3>
- Time (t) = 4 s
- Acceleration due to gravity (g) = 9.8 m/s²
- Velocity (v) =?
v = gt
v = 9.8 × 4
v = 39.2 m/s
<h3>3. How to deteremine the distance</h3>
- Horizontal velocity = 10 m/s
- Time (t) = 4 s
- Horizontal distance (s) =?
s = ut
s = 10 × 4
s = 40 m
Learn more about motion under gravity:
brainly.com/question/20385439
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