Suggest a reasonable number of significant digits for reporting the following common values and give some indication as to your reasoning: a)- your body weight for a passport b)- a car's fuel usage (use liters per 100 km) c)- the weight of a bar ofpure (at least 99.5%) gold (consider a l kgf bar and a 100 oz bar) d)- distance traveled by a body in 1 second if moving at 1 m/s (use meters)

Afoot bridge is made as a simple deck, 4 m long, with a cross section 2 m (wide) and 20 cm thick, and made of wood. the deck is supported at the two ends. the maximum load allowable on the bridge is 10 tons, provided it is uniformly distributed on the deck. to sense this load, a strain gauge is placed at the center of the bridge and its resistance is monitored. if the sensor has a nominal resistance of 350 s2 and a gauge factor of 3.6, what is the reading of the strain gauge at maximum load? the modulus of elasticity for the wood used in the construction is 10 gpa.