The pratt truss below supports a roof with a factored load of p = 40 k. a. indicate which members are in tension and label their required strengths in kips. show that you can compute the loads by hand, but feel free to check your work using analysis software. b. based on gross yielding alone, design the diagonal tension members as a36 angle sections (fy = 36 ksi, fu = 58 ksi), selecting the lightest possible l4×4 member for each. c. using a single line of 1/2" bolts spaced at 2" on center, compute the number of bolts required for each member such that the gross yielding design strength is less than the net section rupture design strength.

Which safety measures should you follow during a thunderstorm? check all that apply. (a) avoid touching anything that conducts electricity. (b) avoid touching a person who has been struck by lightning. (c) go outside. (d) keep your computer turned off. (e) stay out of water. (f) stay inside.

If you place a magnet under a clear dish, and sprinkle iron fillings over it, above what part of the magnet will most of the fillings gather

Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants