Answer:12.92 N, 17.98 N
Explanation:
Given
Speed of ball
mass of ball (m)=0.057 kg
time (t)=0.25 s
(a)Average Force(F)
=12.92 N
(b)Intial velocity(u)
Final velocity (v)
Average Force
F=17.984 N
Answer:
2805 °C
Explanation:
If the gas in the tank behaves as ideal gas at the start and end of the process. We can use the following equation:
The key issue is identify the quantities (P,T, V, n) in the initial and final state, particularly the quantities that change.
In the initial situation the gas have an initial volume , temperature , and pressure ,.
And in the final situation the gas have different volume and temeperature , the same pressure ,, and the same number of moles ,.
We can write the gas ideal equation for each state:
and , as the pressure are equals in both states we can write
solving for
(*)
We know = 935 °C, and that the (the complete volume of the tank) is the initial volume plus the part initially without gas which has a volume twice the size of the initial volume (read in the statement: the other side has a volume twice the size of the part containing the gas). So the final volume
Replacing in (*)
Answer:
AN electric current is required for an electric charge
Explanation:
Energy is what makes change happen and can be transferred form one object to another. Energy can also be transformed from one form to another. Power is the rate at which energy is transferred. It is not energy but is often confused with energy.
Answer:
E
Explanation:
The mixture of the chunk of ice and water is thermally insulated which means heat energy is not absorbed by the system nor does the system release energy to environment. Water loses heat energy to the chunk of ice and its temperature drop leading to some of the water to freeze and increase the size of the chunk hence some of the water will freeze until thermal equilibrium is reached.