A tsp
1 milliliter equals 0.202. US teaspoons. boi did that help
Answer:
The centripetal force on the boy = 2.888 N
Explanation:
Given:
m = 30 kg
r = 1.5 m
v = 0.38 m/s
To Find:
The centripetal force on the boy = ?
Solution:
F = m x v^2 / r
F = 30 kg x (0.38 m/s)^2 / 1.5 m
F = 30 x 0.1444 / 1.5
F = 2.888 N
Therefore,
The centripetal force on the boy = 2.888 N
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Power = (work) / (time)
Work = (power) x (time)
= (4 watts) x (8 hours)
1 "watt" = 1 joule/sec .
Work = (4 joule/sec) x (8 hours) x (3,600 sec/hr)
= (4 x 8 x 3,600) joules = 1,024 joules .
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Another way:
4 watts = 0.004 kilowatt
Work = energy = (power) x (time)
= (0.004 kw) x (8 hrs) = 0.032 kilowatt-hour .
C.) The rougher the surface of an object, the more friction it will produce.
think of sliding a rock on the street