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You have an unknown substance with a mass of 32 grams and a volume of 7 cm3. What is the density of the substance?

Axial loads are applied with rigid bearing plates to the solid cylindrical rods shown. If F1 = 35 kips, F2 = 14 kips, F3 = 21 kips, and F4 = 38 kips, determine the absolute value of the axial load in rod (2).

Two plates are connected with two bolts and transmit load P = 6.2 kN. Each plate is 4.9 mm thick, and each bolt has a diameter of 11.0 mm. Determine the average shear stress in the bolts.

A steel [E = 200 GPa, ν = 0.288] rod with a circular cross section is used as a weight hanger. The straight part of the rod is 165-mm long and has a diameter of 4.7 mm. Determine the magnitude of the lateral strain in this portion of the rod when it supports a tensile load of 9.8 N.

A steel [E = 200 GPa, ν = 0.310] rod with a circular cross section is used as a weight hanger. The straight part of the rod is 135-mm long and has a diameter of 4.1 mm. Determine the magnitude of the lateral strain in this portion of the rod when it supports a tensile load of 11.0 N.

A load of 13 kN is applied through a pin connection and a square bearing plate to the end of a beam that has a rectangular cross section. The base of the beam’s cross section is 76 mm and the height is 170 mm. The size of the bearing plate is 86 mm. Determine the bearing stress between the plate and the beam.

Rigid pipe (2) is supported by a pin connection at C and tie rod (1). The structure supports a load P = 20 kN at pin B. Assume x1 = 3.6 m, x2 = 1.1 m, and y1 = 4.4 m. Determine the force in tie rod (1).

A 3 year old in the urgent care clinic is prescribed ibuprofen after being diagnosed with a second degree ankle sprain.  The ordered dose is 150 mg ibuprofen PO PRN Q 4 HR for pain .  How many mL will the nurse administer.  Round to the nearest tenth. Supply Oral Suspension ibuprofen 100mg/5 mL. 

Please choose one of the questions below to answer. You may also answer two of them for extra credit points.  Describe the hormonal changes that bring about puberty, and the secondary sex characteristics of men. Describe the hormonal changes that bring about puberty, and the secondary sex characteristics of  women. Describe hormonal, ovarian and uterine changes during the monthly cycle of women. Describe implantation and placental development in early pregnancy. 

Before an automotive engine is started, its timing belt has a length of 38.00 in. and a temperature of 60°F. At the engine operating temperature of 220°F, it is determined that the belt has elongated to 38.04 in. What is the coefficient of thermal expansion of the belt?