Women often experience back pain when they are pregnant. suppose a woman's mass before pregnancy is 66 kg and her center of mass when standing is located directly above the hips. by the thirty-fourth week of pregnancy, she has gained 8.2 kg (the combined mass of the fetus, the placenta, and the amniotic fluid). the center of mass of this 8.2 kg is 16 cm in front of the hips. if she hasn't changed her posture, how far in front of the hips is her center of mass? women have three wedge-shaped lumbar vertebrae, whereas men have only two. this evolutionary adaptation permits a greater curvature of the lumbar spine to keep a pregnant woman's cm above the hips.

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.

Sound is a disturbance that travels through a medium as a

Which of these metals are magnetic?