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Women often experience back pain when they are pregnant. Suppose a woman's mass before pregnancy is 61 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 kg (the combined mass of the fetus, the placenta, and the amniotic fluid). The center of mass of this 8 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.
They want the center of mass of the woman + child
A construction worker is standing in a 2.6 meter deep hole, 3.1 meter from the side of the hole. Determine how far from the edge of the hole does it land
Two long, parallel wires are separated by a distance of 2.8 cm. The force per unit length that each wire exerts on the other is 5 ×10-5 N/m. What is the current in the second wire
A 51.0 kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 235 N. What is the final speed of the crate after being pulled these 22.5 m
Steel Piano string, The lowest note on a grand piano has a frequency of 27.5 Hz. The string is 2 m (more or less; let's just assume it is exactly 2.000 m) long, and its tension is 1000 N (again, more or less, so let's say it's exactly 1000 N).
A harmonic wave is traveling along a rope. It is observed that the oscillator that generates the wave completes 37.0 vibrations in 33.0 s. Also, a given maximum travels 424 cm along the rope in 12.0 s. What is the wavelength?
Two objects attract each other gravitationally with a force of 2.5 * 10^-10N when they are .25m apart. There total mass is 5.00kg. Find their individual masses
X-rays with wavelengths of 0.2597 nm are detected at a scattering angle of = 170° in a Compton-scattering experiment. calculate the energy of an incident photon
Explain the difference between a fluorescence emission spectrum and a fluorescence excitation spectrum, What is the force constant for the CO bond
Water flows over a section of Niagara Falls at the rate of1.4 x 106 kg/s and falls 53.0 meters. Compute how much power is generated by the falling water
A car rounds a 200 m radius curve at 10.5 m/s. If the horizontal force acting on the car is 790 N, what's the car's mass
Two cars of equal mass collide on a horizontal frictionless surface. What is the speed of the composite body (AB) after the collision
A concave spherical mirror has a radius of curvature of 1.3 meter. Evaluate what is the focal length of the mirror
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