components of the speed of the coin is given as
now the time taken by the coin to reach the plate is given by
now in order to find the height
so it is placed at 1.52 m height
Answer:
3 m
Explanation:
At last, Same line; so, 6-3 = 3
There exists the same question that has the following choices.
<span>1 the car's friction is reduced to zero
2 the car's centripetal force drops to zero
3 the car continues in a straight path from the point at which it encountered the ice
4 the car continues in a circular path from the point at which it encountered the ice
</span>
The correct answer is choice 3 <span>the car continues in a straight path from the point at which it encountered the ice</span>
Answer:
a) 2.85 kW
b) $ 432
c) $ 76.95
Explanation:
Average price of electricity = 1 $/40 MJ
Q = 20 kW
Heat energy production = 20.0 KJ/s
Coefficient of performance, K = 7
also
K=(QH)/Win
Now,
Coefficient of Performance, K = (QH)/Win = (QH)/P(in) = 20/P(in) = 7
where
P(in) is the input power
Thus,
P(in) = 20/7 = 2.85 kW
b) Cost = Energy consumed × charges
Cost = ($1/40000kWh) × (16kW × 300 × 3600s)
cost = $ 432
c) cost = (1$/40000kWh) × (2.85 kW × 200 × 3600s) = $76.95