What type of motion is described by the following equation, where θ is an angular displacement; m-lkg is the mass of the object, r 2m is the distance at which the object is held away from the center of rotation; what approximation was applied? dt nr 1.2 (7 points) what does α represent and what is its unit? assuming its magnitude is 4 in its si units) what is the period? hint: compare to spring pendulum. 1.3 (8 points) at t-0 the motion starts with the extreme angle 0o away from the equilibrium. write the mathematical form of the time dependent behavior 1.4 (6 points) what is the period if you displace the system by 20o at t-0? 1.5 (7 points) how many periods does it take to go from -0/2 to 0l2?

Answer: fn = wcos50 = 38.89(9.81)(cos50) = 245.23 n

The big glowy thing is called the sun it is a star in our galaxy and is over 1 million degrees

Stars are born within the clouds of dust and scattered throughout most galaxies. a familiar example of such as a dust cloud is the orion nebula. turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction. as the cloud collapses, the material at the center begins to heat up. known as a protostar, it is this hot core at the heart of the collapsing cloud that will one day become a star. three-dimensional computer models of star formation predict that the spinning clouds of collapsing gas and dust may break up into two or three blobs; this would explain why the majority the stars in the milky way are paired or in groups of multiple stars.therefor, i would say the answer is: dust and gases contract.i hope this ! < 3