If a windmill with radius 26 feet makes 12 full revolutions every 1 minute, what is its linear speed?
1 answer:
Answer:
The linear speed of the windmill is 32.682 ft/s.
Step-by-step explanation:
Given;
radius of the windmill, r = 26 ft
number of revolutions per minute, θ = 12 rpm
The angular speed of the windmill is given as;
The linear speed of the windmill is given as;
v = ωr
v = 1.257 rad/s x 26 ft
v = 32.682 ft/s
Therefore, the linear speed of the windmill is 32.682 ft/s.
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Answer:
Size of |E n B| = 2
Size of |B| = 1
Step-by-step explanation:
<em>I'll assume both die are 6 sides</em>
Given
Blue die and Red Die
Required
Sizes of sets
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-
The question stated the following;
B = Event that blue die comes up with 6
E = Event that both dice come even
So first; we'll list out the sample space of both events
Calculating the size of |E n B|
<em>The size = 3 because it contains 3 possible outcomes</em>
Calculating the size of |B|
<em>The size = 1 because it contains 1 possible outcome</em>