Answer:
The perimeter of the second square is 36 inches
Step-by-step explanation:
Given
Represent the sides of the squares with S1 and S2.
So:
--- Scale factor
--- perimeter of the first
Required
Calculate P2, the perimeter of the second
Represent the ratios of the perimeter:
Substitute 12 for P1
Equate both scale factors
Convert to fraction
Cross multiply
Answer:
Three and two I believe
Step-by-step explanation:
The reaction force exerted by the floor of the elevator on the man is D.944 N
Step-by-step explanation:
When the elevator is accelerating upwards at 2 m/s² there occurs a fictitious force acting downwards to produce a downward acceleration of 2 m/s².
The formula to apply here is ;
Weight due to gravity=mg where m is mass of the man and g is acceleration due to gravity.
Due to additional downward acceleration the total acceleration downwards will be : 9.8+2 = 11.8 m/s²
The man weighs down on the elevator floor with a force of ;
F=m(a+g) where m is mass of man, a is acceleration
F=80( 9.8+2)
F=80(11.8)= 944 N
The reaction force by the floor of the elevator is thus 944 N
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Elevator physics :brainly.com/question/13464055
Keywords : elevator, acceleration, moving upwards, reaction force, floor
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Answer:
I remember taking this too. So, the correct answer is A! I SWEAR ITS RIGHT!
Step-by-step explanation:
25.13cm^2 or 8pi. The radius of a circle is 2 x pi x r^2. R is the radius. 2 x pi x 2^2cm -> 2 x pi x 4cm -> 8cm x pi -> 25.13cm^2. Leaving the answer in terms of pi would be 8pi.
