A snowboarder stands at the top of a hill and decides to see if he can increase his speed on his next trip down the slope. Descr
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The electrical energy consumed by a toaster is 0.033 Kwh.
<u>Explanation</u>:
The power utilized by the toaster is 400 W.
The toaster is operated for 5 Minutes.
We know that,
Substitute the values in the above formula to obtain electrical energy,
Electrical energy = 0.4 × 0.083
Electrical energy is 0.033 Kwh.
To solve this problem it is necessary to apply the kinematic equations of motion for speed and distance, as well as the concepts related to kinetic energy.
The change in the height of a body subject to gravity is given by
Where
h = Height
g =Gravity
t = time
Replacing with our values we have that the time is
From speed as a function of change between acceleration and time we have then that after 2.6 seconds the speed would be
The kinetic energy would be given by
Therefore the kinetic energy after 2.6s is 1070.16J