Incident rays parallel to the principle axis of a concave mirror will reflect _____. parallel to the principle axis through the
2 answers:
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Explanation:
1. Force applied on an object is given by :
F = W = mg
(a) A 160 lb human being, F = 160 lb
g = acceleration due to gravity, g = 32 ft/s²
m = 5 kg
(b) A 1.9 lb cockatoo, F = 1.9 lb
m = 0.059 kg
2. (a) A 2300 kg rhinoceros, m = 2300 kg
(b) A 22 g song sparrow, m = 22 g = 0.022 kg
Hence, this is the required solution.
Answer:
t = 6.17 s
Explanation:
For a 1 revolution movement,
Torque,
Moment of Inertia,
If the wheel starts from rest,
The angular displacement of the wheel can be given by the formula:
................(1)
Where is the angular acceleration
To get t, put all necessary parameters into equation (1)