The average length of the reproductive cycle for females is 2â4 weeks. Females reach sexual maturity (puberty) between 8 and 18 months of age. There is a tremendous variability in the maturation age between breeds, and even within a breed of dog. The first stage of the reproductive cycle is proestrus, in which eggs in the ovaries begin to mature and estrogen levels begin to rise.
It usually takes a head-on impact into something fairly solid at 30mph or more to trigger a frontal airbag. A car could be involved in a roll-over crash at 100mph or more, where it could flip over several times, and if there was no significant single front impact detected, the airbags wouldn't trigger.
show more A hot-air balloonist, rising vertically with a constant velocity of magnitude 5 m/s, releases a sandbag at an instant when the balloon is 40 m above the ground. After it s released, the sand bag is in free fall. a. Compute the position and velocity of the sandbag at 0.5 s and 2.0 s after its release. b. How many... show more A hot-air balloonist, rising vertically with a constant velocity of magnitude 5 m/s, releases a sandbag at an instant when the balloon is 40 m above the ground. After it s released, the sand bag is in free fall. a.