Which symbol represents the strain in the tension reinforcement of a reinforced concrete beam?

A radio telescope has a parabolic surface, as shown below.   If the telescope is 1 m deep and 12 m wide, how far is the focus from the vertex? (5 points)

Your next patient is a 70 year old male. He experienced a brief onset of right-sided weakness, slurred speech and confusion one day ago. This episode lasted an hour and a half. He has a history of hypertension and Type 2 diabetes mellitus . His ABCD Score for Acute Cerebral Vascular Syndrome (Transient Ischemic Attack) is 8 (the highest possible score). The symptoms resolved and he feels fine today. As this patient’s primary care provider (PCP) you would: 

Find the standard form of the equation of the parabola with a focus at (0, -8) and a directrix at y = 8. (5 points)

A beam has dimensions of b = 14 in., h = 30 in., d’ = 2.5 in., and d = 27.5 in. It is reinforced with 2 No. 5 bars on the compression side and 4 No. 8 bars on the tension side. The concrete strength is 2,500 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the neutral axis is c = 6.268 in., determine the strain in the compression reinforcement, ε’s.

Your next patient is a 35-year-old male.  You observe that he is struggling with a mental health issue. Which of the following would NOT increase your suspicion of a leading diagnosis of schizophrenia?

Medications to treat generalized anxiety disorder (GAD) can include a selective serotonin reuptake inhibitor (SSRI), and/or serotonin and norepinephrine reuptake inhibitor (SNRI).These medications are advantageous due to the following affects:

Most concrete design codes specify a maximum usable compressive strain at which the nominal moment strength of the section is to be calculated. For ACI 318, this maximum usable strain value is 0.003.

Eliminate the parameter. x = t – 3, y = t2 + 5 (5 points)

Two forces with magnitudes of 90 and 50 pounds act on an object at angles of 30° and 160°, respectively. Find the direction and magnitude of the resultant force. Round to two decimal places in all intermediate steps and in your final answer. (5 points)