Why did NASA launch the COBE mission?
A.
to study radiation from the Sun
B.
to study the leftover radiation from the big bang
C.
to study the amount of helium and deuterium on other planets
D.
to study the process of nucleosynthesis

Ared apple is illuminated by a blue light the apple will appear

Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students? each student bumps the shoulder of his or her neighbor. at the exact time, all students take a step to the right. the students skip clockwise, going in a circular motion. one at a time, each student lifts his or her hands up and then down.

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.