<li>What is the linear speed of a point
(a) on the equator,
(b) on the Artic Circle (latitude 66.5 degrees N), and
(c) at a latitude of 45.0 degrees N, due to the Earth’s rotation?</li>
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<p>What am I suppose to do? Thats all they give me!! Please help.</p>
<p>use variables, radius R, mass M</p>
<p>Which equation do I use? What is linear speed? I only remember talking about angular velocity...</p>
<p>Alright, I calculated (a), but what does "Artic Circle (latitude 66.5 degrees N), " mean?</p>
<p>is this for physics c or b</p>
<p>Physics B.</p>
<p>oh i am in C so i dont know that stuff. whats the difference between b and c ??</p>
<p>C covers less topics but more in depth.</p>
<p>linear speed = radius * angular speed</p>
<p>for part B, find the radius of the earth a latitude 66.5 degrees N and plug in..you'll need to use trig stuff</p>
<p>The_Who, C is calculus based and B isn't.</p>
<p>I don't know how to read a map. What does "latitude 66.5 deg N" mean? Is it a circle, person, or place?</p>
<p>i think that is the angle between the center of the earth and the position.</p>
<p>How do I find the radius? I dont understand how the picture look like.</p>
<p>Alright, I found the radius of latitude 66.5 degrees N to be 2544 km. How do I find its angular speed?</p>
<p>Angular Speed = delta theta / delta time</p>
<p>What is theta and time? Is the time 24 hrs?</p>
<p>NVM. I figured it out. It took me over 1 hour for 3 problems!!!</p>
<p>^^That's how we roll in AP Physics.</p>
<p>its funny cuz my friends in ap bio and chem complain about such hard tests and quizzes and lots of homework and then i tell them, thats nothing compared to ap physics. at our school we have one class of ap physics with 12 kids (me included). chem has 3 classes of 30+ students and bio has 2 classes of 30+ students as well. in our physics class we have freakin smart a-s kids-stanford, mit, harvard, etc applicants. but physics is still kicking my a----</p>