Orchids are a family of thousands of types of flowers that all share the same shape. Many gardening clubs are devoted to collect
ing, studying, and growing orchids, because it is difficult to grow them outside of their natural habitats.
Which are scientific questions that can be asked about a collection of different orchid types? Check all that apply.
Which type needs the highest temperatures to grow in?
Which type has the most beautiful colors?
Do all of the types make food the same way?
Do all of the types deserve the same amount of admiration?
How can someone decide which type makes the best gift?
How long does it take for a specific type to make its seeds?
HELP PLZZZ ( ONLY REAL ANSWERS )
Which are scientific questions that can be asked about a collection of different orchid types? Check all that apply.
Which type needs the highest temperatures to grow in?
Which type has the most beautiful colors?
Do all of the types make food the same way?
Do all of the types deserve the same amount of admiration?
How can someone decide which type makes the best gift?
How long does it take for a specific type to make its seeds?
HELP PLZZZ ( ONLY REAL ANSWERS )
2 answers:
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Answer:
a) Differential mode gain = 48
b) Common mode gain = 0.4
c) CMRR = 120
Explanation:
The output of a difference amplifier is related to the input by the equation:
When V₁ = 6.4 V, V₂ = 5.1 V and V₀ = 64.7 V, the equation becomes
6.4 A₁ + 5.1 A₂ = 64.7.....................(1)
When V₁ = 5.6 V, V₂ = 4.9 V and V₀ = 35.7 V, the equation becomes
5.6 A₁ + 4.9 A₂ = 35.7.....................(2)
Multiply equation (1) by 5.6 and (2) by 6.4
35.84 A₁ + 28.56A₂ = 362.32.....................(3)
35.84 A₁ + 31.36 A₂ = 228.48....................................(4)
Subtract equation (3) from (4)
2.8 A₂ = -133.84
A₂ = -133.84/2.8
A₂ = -47.8
Put the value of A₂ into equation (1)
6.4 A₁ + 5.1 (-47.8) = 64.7
6.4 A₁ = 64.7 + 243.78
A₁ = 308.48/6.4
A₁ = 48.2
a) Common mode gain = A₁ + A₂ = 48.2 + (-47.8)
Common mode gain = 0.4
b) Differential mode gain = (A₁ -A₂)/2
Differential mode gain = (48.2 - (-47.8))/2
Differential mode gain = 96/2
Differential mode gain = 48
c) Common Mode Rejection Ratio (CMRR)