Kinetic energy because it is moving
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
The heat capacity is given by the expression:
When the 
is measured in the calorimeter, we obtain a value, and since we know the mass of the material and we control the change in 
, we can then determine the specific heat "C" by simply remplazing in the expression.
Answer:
750cm³
Explanation:
volume = length × width × height
15 × 10 × 5 = 750
750cm³
Answer:
Only electrons
Explanation:
When a current flows through a metal wire, the moving charges are electrons since electric current is the flow of electric charge in an electric circuit. This electric charge are therefore electrons.
