Q=cm x change in t
Q= (390 J/kg C) x (0.045 kg) x (40.0 C)
Q= 702 J
Answer:
The frequency of a wave is measured in Hz (hertz)
Answer:
The mass of the puck is 0.166 kg
Explanation:
It is given that,
Speed of the ice hockey puck, u = 12 m/s
Impulse delivered by the hockey stick, J = 4 kg-/s
After delivering an impulse, the puck move off in the opposite direction with the same speed, v = -12 m/s
We need to find the mass of the puck. The impulse is equal to the change in momentum i.e.
m is the mass of the puck
So, the mass of the puck is 0.166 kg. Hence, this is the required solution.
Their house is 1km south to the place where they ate ice cream