Midterm Definition and 75 Threads

My professor has posted a sample midterm on her web site, but although she promised to post the solutions as well, she hasn't yet and I don't really expect her to at this point since the midterm is tomorrow. I have a few questions about some of the problems on the midterm. The sample exam can be...

Homework Statement A proton is fired from far away toward the nucleus of an iron atom. Iron is the element number 26 and the diameter of the nucleus is 9.0fm. What initial speed does the proton need to just reach the surface of the nucleus? Assume the nucleus remains at rest. Homework...

Homework Statement lim x cos x-sin x/x sin^2 x x-0 Homework Equations The Attempt at a Solution ............ no clue i just know that we should use l'hopitals rule

Homework Statement Im wondering about applying trigonometry to physics. Using the tangent, sin, and cosine stuff. WHen looking at a vector that makes a right triangle, how do I know when to use tangent,sin, or cosine? I know cosine relates to the X and Sine relates to the Y. But how do I...

[SOLVED] Forces and Motion Midterm Review Homework Statement A bulldoezer drags a log weighing 500N along a rough surface/ The cable attached to the log makes an angle of 30 degress with the ground. The coefficient of static friction between the log and the ground is 0.500. What minimum...

1.) A stone is thrown with an initial velocity of 7.0m/s. the acceleration of the stone is constant and has the value of -9.8m/s to the power of ((2)). What is the velocity of the stone after .50 s? I put 2.1 not sure if it's right. 2.) An airplane starts from rest and accelerates at...

Projectile Motion PLEASE HELP MIDTERM TOMMOROW! 1. A ball is launched with a velocity of 1000m/s at some angle theta. The ball must travel 2000m in the x dir and land 800m in the y dir on a plateau. What theta should the ball be shot at to make this happen. 2. y=y0 +v0t -.5gt^2 3...

Homework Statement Question 5(10 marks) Assume that a function f(x) is continuous on the interval [0,1].Express the following derivatives as formulae in terms of x,f(x),f'(x) and \int_{a}^{x}f(t)dt a)\frac{d}{dx}\int_{x}^{0}tf(t)dt b)\frac{d}{dx}\int_{0}^{x}xf(t)dt...

I am working on my midterm project and I have two pieces I can't put together with php. I am supposed to create a form that let's a user enter a keyword to search Amazon books, so I have the form that catches the data and gives it to the php file: http://www.pic.ucla.edu/~jctaylor/midterm.htm...

I am going to have an calculus exam on saturday. The topic is partial derivatives and double integrals. Does anybody know a website where I could find nice problems about these topics? Thanks already...

I have a mid term tomorrow for my controls course. We have 514 pages of material with no formula sheet. We have to memorize everything, including some derivations and Matlab code. After this mid term were only doing 2 other chapters. This isn't a mid term, its a damn final exam! At this...

Integration Question.. I have a midterm in 45 mins! AH! Homework Statement integral with bounds [5,x^2] of f(t)dt = (5x^2)/(x^4+6) + C f(t) = ? C = ? Homework Equations Uhm.. I don't know. I am guessing you have to use the FTC.The Attempt at a Solution I've have tried so many different...

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I'm so screwed now. I can barely think hard enough to do my Topology assignment and that's my strongest class. Not to mention a Probability midterm tomorrow that I was on my way to being prepared. :cry: I hope I pass the midterm. :cry: I'm so useless right now. Going to bed soon...

Consider a DE dy/dx = f(x,y) Suppose that all the scaling transformations Tt, t not equal to 0, are symmetries of the DE. Show that the value of f(x,y) only depends on the ratio y/x, by showing that: f(x,y) = f(1, y/x) I think I have a rough idea of how to do this, my professor did...

Ok, i need an easy way to remember all the trig derivatives. that's reiprical trig, and all the inverses of them aswell. Is there some easy way where i only have to remember a few of them, and i can just figure out the rest from that? thanks

I just took my Physics Midterm and there was one problem on the test that I had no clue on and just left blank. Here's the problem: A 6.0 kg box is attached to a rope that is wound around a pulley of radius 0.150 m and mass 10.0 kg. The box is initially at rest and is suspended 3.0 m above...

Midterm Practice: Could someone verify my proof A sample question that I tried proving is: Formally show that A \subseteq B,~then~A \cap C \subseteq B \cap C My Proof: Suppose x \in A \cap C. Then by definition of intersection, x \in A~and~x \in C. But as A \subseteq B,~then~x \in B...

What is the last digit of 2222^{50}~+~7777^{16}? I know how to do these kinds of questions, but this time around I decided to try mod 11. Is there a reason why mod 11 does not work in this case? 2222 \equiv 0~(mod~11) Therefore, 2222^{50} \equiv 0^{50} (mod 11), that is 2222^{50} \equiv...

So i have a midterm tomorrow in E&M and I'm not well prepared at all. The whole class is pretty much already prepared to fail... so I'm not alone in that at least. Basically, i have one more day (tomorrow) to study, so i best make the best of it. We get to bring index card "cheat sheets" that...

I have not gone to my math class in 3 weeks. Just got out of the midterm, professor handed out answer sheets. I passed with flying colors. This should not be possible. Between this midterm and the last one i have not gone to class once, and i spent about an hour reviewing last night. Really...

Hey My midterm is tomorrow and i don't know how to do this! See if one of you does. A 850 N person sits 1.2 m from one end of a swing (5 m long) supported at each end by a chain. The swing weighs 250 N and there is a 40 N can of soda .5 m from the end opposite the person. How much force...

I just wrote a midterm, and I found it pretty easy. I was wondering what others got as questions. This is the MIDTERM (not FINAL) for the Calculus I course. It covered all the material to the Chain Rule. Note: I am asking because I may change schools. To a school that demands more...

Tomorrow is my first physics midterm for college. I got a 5 on the AP Physics B test, but I've never taken physics in college yet. There's hardly any calculus, so its basically AP Physics B. Does anyone know where to get sample midterms or can anyone give me some challenging practise problems...

Hello... well I am just trying to prepare myself for my midterm which is on kinematics (1 and 2 dimensions) and dynamics. I've been trying a lot of problems, some i get some i don't... well anyways I was hoping that you guys could give me some key points and concepts that would be useful for my...