Final Definition and 1000 Threads

[SIZE="5"]there are pictures and hints missing, view fullo version in the attached file. Below is a short-story of a scenario where you are president of the universe Zaphod Beeblebrox. In order to answer several of the questions below you will need access to appropriate references. You...

Homework Statement Consider 2 magnetic masses, m1 and m2; these 2 repel each other for a distance s with force f (relative to each other)...which applies from m1 to m2. Predict final velocity of m1 and m2. Assume final distance to be v1 and v2 Assume the force that f acts is constants, i.e...

Homework Statement Two stationary positive point charges, charge 1 of magnitude 3.45 nC and charge 2 of magnitude 1.85 nC, are separated by a distance of 50.0 cm. An electron is released from rest at the point midway between the two charges, and it moves along the line connecting the two...

Hello, It may not be the best place to ask but that is the best place I found :) So I have been trying to calculate kinematic variables for the following process (incoming electron with energy ~360MeV and neutron at rest) : e^- + n \rightarrow e^- + \Delta^0 \rightarrow e^- + \pi^- + p So I...

I thought of the following academic problem while watching a baseball movie. I ballplayer wishes to throw the game-winning ball to a kid in the stands. He wants to minimize the final velocity of the ball. Not the horizontal component of the velocity, but the the total magnitude of the...

The problem states that a plane approaching a mountain peak at a speed of 50 m/s is located at a vertical distance of 100.0 m above the peak. I calculated the distance at which the plane should release the package so it lands on the peak (first question), but the second question ask what the...

Homework Statement Consider 2 magnetic masses, m1 and m2; these 2 repel each other for a distance s with force f (relative to each other)...which applies from m1 to m2. Predict final velocity of m1 and m2. Assume final distance to be v1 and v2 Assume the 2 masses at rest initially...

Homework Statement The escape speed from a very small asteroid is only 32 m/s. If you throw a rock away from the asteroid at a speed of 44 m/s, what will be its final speed? Homework Equations Ki + Ui = 1/2mv^2 + (-GMm/R) = 0 (for v<<c) The Attempt at a Solution I am unsure of how to do...

Homework Statement A 10.0 g marble slides to the left with a velocity of magnitude 0.500 m/s on the frictionless, horizontal surface of an icy, New York sidewalk and has a head-on elastic collision with a larger 30.0 g marble sliding to the right with a velocity of magnitude 0.150 m/s Find...

Homework Statement A 70kg mass is in a space and moving at 2.5 m/s. You push it with 200N for 4 m. You then move to the front of the mass and push it backwards with 170N for 3 m. What was the total work done? What was the final velocity? Homework Equations W = rest energy + F1*r -...

Homework Statement A NASA satellite has just observed an asteroid that is on a collision course with the Earth. The asteroid has an estimated mass, based on its size, of 5 × 10^9 kg. It is approaching the Earth on a head-on course with a velocity of 611 m/s relative to the Earth and is now 5.0...

Homework Statement Consider an RC circuit in which a capacitor is being charged by a battery connected in a circuit. Initially the capacitor is uncharged. Then the switch is closed. After a time equal to 4.5 time constants, what percent of the final charge is present on the capacitor...

1. A pitcher uses 3.5m to accelerate a baseball before release. Find the average acceleration of a ball starting at zero m/s and traveling 41m/s at release Thanks in advance. I'm lost with what I need to do.

Lenses/Images -- Find final image Two converging lenses, each having a focal length equal to 8 cm, are separated by 35 cm. An object is 30 cm to the left of the first lens. (a) Find the position of the final image using both a ray diagram and the thin-lens equation (c) What is the overall...

Ideal diode questions final soon urgent help its actually an example in my book (sedra and smith, 5th ed) which i fail to understand completely! Question: the question is : Assuming the diodes to be ideal find V and I in the circuits. I obviously went through the example but it totally...

Homework Statement A fairgorund target consists of a uniform circular disk of mass M and radius a that can turn freely about its diamerter which is fixed in a vertical position. Iniitally the target is at rest . A bullet of mass m is moving with speed u along a horizontal line at right...

For a force F = −mg ± cv^2 (the sign is chosen so the drag force is opposite the motion), you can use a trick: let u = v^2, and generate a differential equation for u(x) (not u(t)!), which is not too hard to solve. (Hint: the chain rule gives this dv/dt=dv/dx * dx/dt should help.) a) Solve...

im studying for my grade 10 final exam and I've lost my basic formulas note. could someone please post the formulas to find speed time displacement acceleration distance ( maybe) ( i think its in relation to distance and time and speed) also in my review sheet there is this question a...

[solved] finding final velocity in a perfectly elastic collision ~~~Two marbles with equal masses collide. Marble A has an initial velocity of 1.69 m/s while marble B is initially at rest. If marble A comes to rest as a result of the initial collision, what is the final velocity of marble B...

Homework Statement Consider the following arrangement of potentials and a test charge (not pictured) located at infinity. - To which location will a test charge of +3 microColumbs travel? The potentials are as follows: (-1V) top left (-7V) top right (+1V) lower left (+4v) lower...

Hey All I am looking for some ideas, or what might be an interesting project for a final year project for a Degree. My degree is Mech Eng, but my key areas are: - Aerospace - Programming/Code/Systems - Electronics/Signals - Thermo/Fluid Dynamics I was thinking of doing some...

calculating final speed using momentum [solved] 1. A 73.8 kg girl runs at 4 m/s and jumps onto a 3.4 kg stationary skateboard. Ignore friction and calculate the final speed of the girl. * DO NOT include units in your answer. * Give your answer with one decimal. * Answers will...

Homework Statement A student is standing on the top of a building and he throws an object into the air with a speed of 16 m/s at an angle of 25 degrees above the horizontal. If the building is 75 m tall, how far from the base of the building will the object hit the ground? Homework...

Homework Statement This question is something we got in our review booklet and I HATE projectile motion. An object is thrown horizontally with a velocity of 18 m/s from the top of a cliff. If the object hits the ground 100 m from the base of of the cliff, how high is the cliff...

Hello, I am preparing for my Calc final and have these a ton of practice questions, these are a few I am not getting. Can somebody help me out with these? 1. find the tangent line slope of y=g(x)=1/2x+1 at x =-2 2. Derivative of y with respect to x a) y=(3x+4/2x-4)^1/10 b) find dy/dx if...

There are two insulated compartments separated by a thin wall. The left side contains .060 mol of He at a initial temperature of 600 k and the right side contains .030 mol He at the initial temperature of 300 K. The compartment on the right is attached to a vertical cylinder, above which the...

Homework Statement Two ideal gas (n mole A and m mole B) was separated by a piston (impermeable and diathermal) the whole setup is confine in a adiabatic walls so no heat exchange with outside. Let the piston move, at equilibrium, find the final volume. Assume the final temperature of both...

Homework Statement Fleas have remarkable jumping ability. If a 0.50 mg flea jumps straight up, it will reach a height of 36 cm if there is no air resistance. In reality, air resistance limits the height to 18 cm. Homework Equations K=1/2 m*v^2 The Attempt at a Solution I tried to...

Homework Statement A 2kg mass with KE=80 J strikes and sticks to an initially stationary 8kg mass. Calculate the final energy of the stuck-together masses. Homework Equations KE=1/2 x m x v squared The Attempt at a Solution i have no idea, any help would be appreciated

Homework Statement http://www.angelfire.com/punk/slayer_coool/arrow.jpg The information is there. Its vertical sorry. But I need to know the final velocity.

Homework Statement A ball rolls up a straight incline. The dots in the diagram represent the position of the ball every 4 seconds. (The fourth dot is not intended to represent the turnaround point; the ball might still be on the way up at that point.) The instantaneous velocities at the...

Homework Statement Making the light. While traveling in your car at a constant 12 m/s, you notice a traffic light 44 m in front of you turn yellow. You know that the light will turn red in 3.0 seconds, and that you can speed up at a rate of 6.0 m/s/s. You’re also aware that it takes you 1.0...

Im doing Final exam review this is the first question please check! Thank you! Homework Statement 1. Water balloon drop. You and your physics major roommate devise a plan to drop water balloons on classmates entering your dorm. Just as they cross a mark that’s 3.0 m from the door, you’ll...

I have had a extremely busy couple weeks where I could not focus on my quantum reading, and so I am a little lost conceptually. I am using Griffiths, and I am having trouble understanding what is going on in sections 4.1-4.3, which deal with the Hydrogen atom, angular momentum, and the...

1)A 3kg heavy winter coat hangs in the middle of a clothesline causing it to sag by an angle of 5 degrees. Find the tension in the clothesline. 2). A car is traveling with a constant speed when the driver suddenly applies the brakes giving the car a deceleration of 4 m/s^2. If re car. Comes...

Homework Statement Two freight cars, each with a mass of 2.5 multiplied by 10^5 kg, collide and stick together. One was initially moving at 3.4 m/s and the other was at rest. What is their final speed? Homework Equations m(vf-vi) The Attempt at a Solution (2.5*10^5)(0-3.4)=...

I'm stoked! I passed my Physics final! :) Only one more Physics left :biggrin:

Homework Statement a monatomic ideal gas(Cv=3/2R) undergoes an isothermal expansion at 300K, as the volume increased from 0.09m^3 to 0.36m^3. the final pressure is 100kPa. the change in the internal energy of the gas, in kJ is closest to a. 0 b. 25 c. -50 d. -25 e. 50 Homework...

Homework Statement A 1.00-mol sample of an ideal diatomic gas, originally at 1.00 atm and 15 celcius, expands adiabatically to 2.00 times its initial volume. What are the final pressure for the gas? (Assume no molecular vibration.) What are the final temperature for the gas...

Homework Statement A uniform disk is set into rotation with an initial angular speed about its axis through its center. While still rotating at this speed, the disk is placed in contact with a horizontal surface and released. What is the angular speed of the disk once pure rolling takes place...

Homework Statement steam at 100C is added to ice at 0C find the amount of ice melted and the final temperature when the mass of steam is 10g and the mass of ice is 50g Homework Equations Q=mcdT Q=ML The Attempt at a Solution Qmelt=MiciT+MiLf =0.05(2090)(100C)+(0.05)(3.33x10^5)...

Homework Statement Evil Alien has put an Asteroid with mass of 1,000,000kg to destroy mankind. Distance from center of the Earth to Asteroid (assume negligible center) is 10^8m and let's the gravitational force do the work. Earth radius is 6.4 x 10^6m and its mass is 5.98 x 10^24kg...

Before going in for an annual physical, a 70.0-{\rm kg} person whose body temperature is 37.0{\rm ^{\circ} C} consumes an entire 0.355-{\rm liter} can of a soft drink (which is mostly water) at 12.0{\rm ^{\circ} C}. Part A What will be the person's body temperature T_final after equilibrium...

Homework Statement particle 1 with mass 6.7 kg going 7.3 m/s collides inelastically with a particle of mass 4 kg at rest. find the final velocity of particle one after the collision. Homework Equations Ki = Kf but, mechanical energy is not conserved in an inelastic collision. pi = pf...

Perhaps I am not reading the chapters enough, but this is just intro to physics where there aren't even any math equations to compute. It is simply the concepts and nature of things like light, heat, phase change, etc. The final exam which is in a few weeks covers everything from day 1, it's...

Homework Statement A ball of mass 20.0kg (mass A) traveling at a initial speed of 5.0m/s, collides with a ball of mass 10.0kg (mass B) which was traveling at a initial speed of 1.0m/s. What is the final velocity of mass A, what is the final velocity of mass B? mA = 2mB Homework...

Equation sheet limited to twenty equations spanning material from electrostatics to mutual induction. Halliday Resnick chapters 21-31. 2 hours. Seems like some questions depended on you having the equation accessible, which is a matter of chance. Core exams were usually 12 MC and 3-4...

Homework Statement A 1.00×104 railroad car is rolling at 4.00 when a 2000 load of gravel is suddenly dropped in. What is the car's speed just after the gravel is loaded? Homework Equations f=ma pi=pf The Attempt at a Solution I am very confused with this problem, but this is...

Homework Statement A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = +36.0 cm. Precisely 33.0 cm behind this lens is a concave lens with a focal length f2 = -10.0 cm. The object to be photographed is 3.67 m in front of the objective lens. (a)...

Kia gets spliced Saturday, there are people coming from Ireland, Scotland, Wales and England, every thing is planed, i have even finished my speech, now it is all in the lap of the gods, rain is forcast but we will be inside so that makes no difference.