Answer: 12.15π cm³/min
Explanation:
Given,
Diameter, d = 9 cm
Volume of a sphere, v = 4/3.π.r³
dD/dt = -0.3 cm/min (the negative sign is because it is decreasing)
Volume = 4/3.π.(d/2)³
Volume = 4/3.π.(d³/8)
Volume = 1/3.π.(d³/2)
Volume = 1/6.π.d³
dV/dt = 1/2.π.d².(dD/dt), substituting the value of dD/dt onto this, we have
dV/dt = 1/2.π.9².(-0.3)
dV/dt = 1/2.π.81.-0.3
dV/dt = 1/2.π.-24.3
dV/dt = -12.15π cm³/min
Thus, the volume of the snowball is changing at 12.15π cm³/min
Explanation:
the reason you hear a loud sound when you knock on a wall and put your ear u against it is because when you knock on said wall vibrations are bouncing off of the wall there fore making that loud banging sound.
Answer:
The newly-formed government of the United States also became a model for French reformers. Ideas that were once just abstract thoughts – such as popular sovereignty, natural rights, constitutional checks and balances and separation of powers – were now part of an actual political system that worked
Answer:
2.66 m/s² .
Explanation:
Initial velocity , u = 0 m/s
Final Velocity , v = 8 m/s
Time Taken , t = 3 s
So , Acceleration = (v-u)/t = (8 m/s - 0 m/s) /3 sec . = 8/3 m/s² = 2.66 m/s²
Answer:
Newton's First Law states that an object with no net force acting on it remains at rest or moves with constant velocity in a straight line. Newton's Second Law states that the acceleration of an object is directly proportional to the net force on the object and inversely proportional to the mass of the object.
Explanation:
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