Find the coordinates of the center of mass of the following solid with variable density x r={(xy, z): 0sxs8, 0sys5, 0szs 5); p(x. y,z)= 1+ 4 the center of mass is located at (type exact answers in simplified form.)

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

its lower due to the doppler effect.: apex