<span>Hich would increase the speed of a sound wave? Check all that apply. where are the answer chices?</span>
Answer:
the answer would be parent material
Explanation:
Answer:
0.66 m/s²
Explanation:
The following data were obtained from the question:
Initial velocity (u) = 0
Final velocity (v) = 5.4 m/s
Time (t) = 8.2 secs
Acceleration (a) =....?
The acceleration of the dog can be obtained as follow:
v = u + at
5.4 = 0 + a × 8.2
5.4 = 8.2a
Divide both side 8.2
a = 5.4/8.2
a = 0.66 m/s²
Therefore, the acceleration of the dog is 0.66 m/s².
Answer:
Explanation:
Given that,
A sphere has a volume of V and a radius r
Volume of sphere cam be determine using the formula
V = 4/3 πr³
V = 4πr³ / 3.
If the radius of the sphere is increasing by
dr / dt = 5cm / min
How fast is the volume increasing when r = 10cm
dV / dt =?
From V = 4πr³ / 3
We can calculate dV/dr
dV/dr = 12πr² / 3
dV/dr = 4πr²
Then,
We want to find dV/dt
Using chain rule
dV/dt = dV/dr × dr / dt
dV/dt = 4πr² × 5
dV/dt = 20πr²
So, at r = 10
dV/dt { 20π × 10²
dV/dt = 6283.19 cm/min
The rate at which the volume increase is 6283.19 cm/min
