A topographic map would best provide information about which area? O state boundaries O interstate highways O routes of minor ro
2 answers:
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Answer:
41°
Explanation:
Kinetic energy at bottom = potential energy at top
½ mv² = mgh
½ v² = gh
h = v²/(2g)
h = (2.4 m/s)² / (2 × 9.8 m/s²)
h = 0.294 m
The pendulum rises to a height of above the bottom. To determine the angle, we need to use trigonometry (see attached diagram).
L − h = L cos θ
cos θ = (L − h) / L
cos θ = (1.2 − 0.294) / 1.2
θ = 41.0°
Rounded to two significant figures, the pendulum makes a maximum angle of 41° with the vertical.
Explanation:
Efficiency is defined as the ratio between the useful output over the total amount consumed.
The fan does 500W of useful work while wasting 300 W. The total power consumption is 800 W (500 + 300).