Answer:
a) 360 kQ
b) 4.32 MJ
c) 1200 W-h
Explanation:
a) The definition of the current is.
having a count that 10 hours = 36.000 s
![Q = 36000*10 = 360.000 [Q]](https://tex.z-dn.net/?f=%20Q%20%3D%2036000%2A10%20%3D%20360.000%20%5BQ%5D%20)
b) The definition of the Energy in power terms is.
and the definition of power is:
![P = V*I = 12 * 10 = 120 [W]](https://tex.z-dn.net/?f=%20P%20%3D%20V%2AI%20%3D%2012%20%2A%2010%20%3D%20120%20%5BW%5D)
replacing in the energy formula.
solving the integral, have into account that t is in seconds.
![E=P*t=120*36000=4.320.000=4.32 [MJ]](https://tex.z-dn.net/?f=%20E%3DP%2At%3D120%2A36000%3D4.320.000%3D4.32%20%5BMJ%5D)
c) The energy in W-h, we can find it multiplying power by hours
.
Answer: 477W
Explanation:
Given the following :
Mass (m) = 7.3kg
Initial Velocity (u) = 0
Final velocity (v) = 14m/s
time (t) = 1.5s
Power = workdone (W) / time (t)
The workdone can be calculated as the change in kinetic energy (KE) :
Recall ;
KE = 0.5mv^2
Therefore, change in KE is given by:
0.5mv^2 - 0.5mu^2
Change in KE = 0.5(7.3)(14^2) - 0.5(7.3)(0^2)
Change in KE = 715.4J
Therefore ;
Average power = Workdone / time
Workdone = change in KE = 715.4N
Average power = 715.4 / 1.5
Average power = 476.93333 W
= 477W
Answer:
Frequency
Explanation:
Doesn't say how often he exercises
Nuclear reaction you are literally splitting an atom and in a chemical reaction you are not
Answer: Final speed
Explaination: because its final.
