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In exercise physiology studies it is sometimes important to determine the location of a person's center of mass. This can be done with the arrangement shown in the figure. A light plank rests on two scales, which give reading of Fg1 = 390 N and Fg2 = 310 N. The scales are separated by a distance of 2.00 m. How far from the woman's feet is her center of mass?
___ m
Light of wavelength 420 nm is incident normally on a film of water 1.0 µm thick. The index of refraction of water is 1.33, What is the wavelength of the light in the water
A projectile is fired with an initial velocity of 20 m/s at 50° above horizontal. At the projectile's highest point, what is its velocity?.What is its acceleration?
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What is the relationship between electric potential and electric field, If we know the electric potential everywhere in a region
A projectile is shot directly away from Earth's surface. Neglect the rotation of the Earth. What multiple of Earth's radius RE gives the radial distance (from the Earth's center) the projectile reaches if (a) its initial speed is 0.550 of the escape ..
Calculate the coil's self-inductance. If the current decreases uniformly from 5.00 to 2.00 in 3.00, estimate the self-induced emf in the coil.
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