Free-range chickens are used for both meat and eggs.
Answer the following statement true (T) or false (F)
True
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Answer the following statement(s) true (T) or false (F)
Reflective surfaces can cause inaccurate readings on infrared thermometers.
Sickle-cell anemia is an inherited disease in which red blood cells are misshapen and sticky. Sickle cells tend to form clumps in blood vessels, inhibiting the flow of blood. Humans have two genes for sickle-cell anemia, either of which may be S for normal cells or s for sickle cells. A person with two copies of the s gene will have sickle-cell anemia. A person with one s gene and one S gene will not have the disease, but will be a carrier, which means that the s gene may be transmitted to the person’s offspring. If two carriers have a child, the probability is 0.25 that the child will have the disease and 0.5 that the child will be a carrier. Outcomes among children are independent.
a. A mother and father who are both carriers have two children. What is the probability that neither child has the disease? b. What is the probability that both children are carriers? c. If neither child has the disease, what is the probability that both are carriers? d. A woman who is the child of two carriers has a child by a man who is a carrier. What is the probability that this child has the disease?
Skin effect and induction change the resistance in alternating-current (ac) circuits, therefore resistance of a conductor is ____.
A. slightly lower in an ac circuit B. reciprocally lower in a dc circuit C. slightly higher in an ac circuit D. reciprocally higher in a dc circuit
The approximate heating value of propane is:
A) 1,780 BTU per cubic foot. B) 1,000 BTU per cubic foot. C) 3,200 BTU per cubic foot. D) 2,500 BTU per cubic foot.