Aperson is standing on a level floor. his head, upper
torso, arms, and hands together weigh 438 n and have a center of
gravitythat is 1.28 m above the floor. his upper legs weigh 144 n
and havea center of gravity that is 0.760 m above the floor.
finally, hislower legs and feet together weigh 87 n and have a
center ofgravity that is 0.250 m above the floor. relative to the
floor, find the location of the center of gravity for the
entirebody.

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories

The process of predicting values that extend beyond the range of data points is called absolute value extrapolation interpolation prediction for any given: )