Horizontal Definition and 960 Threads

Homework Statement A 14cm diameter champagne bottle rests on its side on top of a frictionless table. Suddenly, the cork pops and the bottle slides backward for a distance of 22 cm in .42 s. If the mass of the bottle is 500 times the mass of the cork, find the distance from the original...

Homework Statement A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 12.0 m/s, and the distance from the limb to the level of the saddle is 2.00 m. What must be the horizontal distance between the...

Homework Statement The person wants to cause the 200N crate to start sliding toward the right. To achieve this, the horizontal component of the force exerted on the crate by the rope must equal 0.35 times the normal force exerted on the crate by the floor. [[[[[[[[[ + [...[ + [...[+...

Homework Statement A projectile is fired at an angle of 60 degrees above the horizontal with an initial speed of 300 m/s. Calculate A) the horizontal distance traveled and B) the vertical height attained in the first 6 s. Homework Equations The Attempt at a Solution I did...

I want to understand this: In the case of a dropped object, the horizontal component of the velocity with which the object hits the ground is not the same thing as the horizontal velocity itself, am i right? The horizontal component of the velocity when the object hits the ground means the...

Draw A motion diagram A postion-versus-time graph, and A velocity-versus-time graph. A pitcher winds up and throws a baseball with a speed of 40 m/s. One-half second later the batter hits a line drive with a speed of 60 m/s. The ball is caugh 1 s after it is hit. From where you are...

Homework Statement Lets say that a person called A rides his motorcycle. When this person turns, he tilts his motorcycle on a horizontal road. Is the normal force still normal to the surface or does it point in the same direction as the person sitting on the bike? The Attempt at a Solution...

Homework Statement A firefighting crew uses a water cannon that shoots water at 25.0 m/s at a fixed angle of 53.0 degrees above the horizontal. The firefighters want to direct the water at a blaze that is 10.0 m above ground level. How far from the building should they position their...

Homework Statement On takeoff, the combined action of the air around the engines and wings of an airplane exerts a 7049N force on the plane directed upward at an angle of 58.7 above the horizontal. The plane rises with a constant velocity in the vertical direction while continuing to...

I'm still doing grade 12 physics, so my physics knowledge is VERY limited. So I have a question about proving that a projectile launched 45 degrees above horizontal gives the greatest horizontal displacement. I have to ideas to go about proving this: 1. Subbing Equations I have...

Homework Statement After a package is ejected from the plane, how long will it take for it to reach sea level from the time it is ejected? Assume that the package, like the plane, has an initial velocity of 220 mph in the horizontal direction. If the package is to land right on the island...

Homework Statement A fire hose held near the ground shoots water at a speed of 7.5 m/s. At what angle(s) should the nozzle point in order that the water would land 3.0 m away? The attempt at a solution I remember from engineering there was a single equation you could use to find the...

Homework Statement A ball is thrown straight upward and returns to the thrower’s hand after 4 s in the air. A second ball is thrown at an angle of 67◦ with the horizontal. The acceleration of gravity is 9.8 m/s2 . At what speed must the second ball be thrown so that it reaches the same...

Hai! Can anybody answer to me why the horizontal component of a projectile motion has no net force?Why is it move with constant velocity ? I know that motion doesn't need force but acceleration need force. But at the time a projectile motion started it motion ,why can it doesn't required...

First off, I'm glad I stumbled upon this place. Secondly, taking physics as an online course is probably not the best judgment call I have made in recent times. However, I'm here now and I plan on sticking through with the course. My problems, however, are lying with the labs. Since they...

Homework Statement Find a cubic function ax^3 + bx^2 + cx + d whose graph has horizontal tangents at the points (-2, 6) and (2. 0).Homework Equations No idea.The Attempt at a Solution I realize that the trick in here somewhere is to work "backwards". I completed a problem earlier that asked me...

An 18-g rifle bullet traveling 200 m/s buries itself in a 3.6-kg pendulum hanging on a 2.8-m-long string, which makes the pendulum swing upward in an arc. Determine the horizontal component of the pendulum's displacement. What I tried was find the momentum of the bullet, then find the...

Homework Statement Two veggieburger patties, in contact with each other, are being pushed across a grill. The masses of the burgers are 113 g and 139 g. Friction is negligible. The applied horizontal force of magnitude 5.38x10^-2 N is exerted on the more massiv burger. Determine a) the...

Horizontal Waterwheel (from: "centrifugal force" thread) This is all over my head, but I'm in the water and I want to learn,:eek: Maybe you guys need a mechanical challenge to apply your classical physics to:rolleyes:. I know very little of what has been said, or how to make calculations...

Homework Statement Ball starts to slide with initial speed v0 = 6.5 m/s on horizontal surface. After what time will ball start to roll? Kinetic friction between the ball and the surface is 0.3. v0 = 6.5 m/s \mu = 0.3 I = 1/2 mr^2 Homework Equations I have solved this problem but I'm not...

a ball is thrown with v(initial)=5i+19.6j find the equation of the horizontal motion Homework Equations the problems asks for ymax and tymax and part b asks for the equations of the horizontal and vertical motions. Lost on the equations

A square tank 12 feet high having a perimeter of 40 feet is filled with water weighing 62.4 pounds per cubic foot. The total horizontal force on one side of the tank due to the water pressure is MOST NEARLY ________ pounds. A. 58,000 B. 45,000 C. 36,000 D. 13,000 The answer key says...

[SOLVED] Finding a Vertical Force given friction and a horizontal force Homework Statement Problem: A box with a weight of 50 N rests on a horizontal surface. A person pulls horizontally on it with a force of 10 N and it does not move. To start it moving, a second person pulls vertically...

[SOLVED] Horizontal Range (with incline) Homework Statement A ball is thrown up an (v0) incline. The ball is thrown at an angle phi from the incline and the incline has an angle theta with the ground. 1) Show the ball lands a distance R = 2{v_0}^2 sin\theta cos(\theta + \phi ) / (gcos{\phi...

Homework Statement Calculate any or all of the following: horizontal velocity, initial vertical speed, angular launch speed, launch angle, and maximum height all for an object with a mass of 7.3g that is projected 24.5m. Homework Equations The Attempt at a Solution V=d/t...

Homework Statement Calculate any or all of the following: horizontal velocity, initial vertical speed, angular launch speed, launch angle, and maximum height all for an object with a mass of 7.3g that is projected 24.5m. Homework Equations The Attempt at a Solution V=d/t...

Homework Statement A uniform rod AB, of length (2a) and mass (m) has a particle of mass (0.5m) attached to B. The rod is smoothly hinged at (A) to a fixed point and can rotate without resistance in a vertical plane. It is released from rest with AB horizontal. Find, in terms of (a) and (g), the...

Homework Statement Find the smallest positive value for `theta` for which the tangent line to the curve `r = 6 e^(0.4 theta)` is horizontal The Attempt at a Solution I tried to use the (r'sin(theta)+rcos(theta))/(r'cos(theta) - rsin(theta)) formula to get the tangent line, which I got...

Supposedly taking off horizontally costs less and is more energy efficient than vertical takeoff. Aside from the issues of staging, and rocket vs. propeller, does anyone know why HTO is better than VTO?

When you have a basic projectile problem, What is the easiest way to find a specific horizontal distance in the problem.( other than the full horizontal distance that the projectile travels) Say you know the height (y) but want to find the distance (x).

Why, when nearing the speed of light, do objects appear to be shrinking to someone in a different frame of reference? I understand time dilation, but not the horizontal distortion.

Homework Statement Find all points on the graph of the function at which the tangent line is horizontal. f(x) = 2sinx + (sinx)^2 Homework Equations Hi guys I have an issue. I do not know how to approach this problem. I know the chain rule but I still do not know how to solve the...

This problem states that a mass m is attatched to a spring with spring constant k and is pulled aside a distance A from its equilibrium position x=0. a) what is the speed as it passes the position x=0? I know that at A and -A v=0 and at x=0 v=max, but I can't remember how to get an equation...

The problem is to find the horizontal tangent lines of an equation. Here's my attempted differentiation. y^2 = x^3 - x + 1 {dy/dx} = (3x^2 - 1)/(2y) Correct, or no? i'm going to need more help going forward even if that is right, I just want to make sure it is.

An object rolls down a smooth plane (whose angle and length are given) starting from rest. At the end of the plane it reaches horizontal rough surface, it rolls again on this surface and comes to rest. Given the friction coefficient how do we calculate the distance traveled by the object on...

For which value of x...horizontal Tangent Line Homework Statement For which value of x does f(x) = \frac{k}{ax^{2}+bx+c} have a horizontal tangent line? Homework Equations Quotient Rule? F'(x) = [g(x)a'(x) - a(x)g'(x)]/g(x)^2? The Attempt at a Solution Am I supposed to...

hey guys, i studied "applied maths" in "high school" [the irish version!] we studied projectile motion and velocity vectors etc, we worked on the premise that gravity affects only the verticle velocity of the projectile so that: for a projectile given an initial velcoity both horizontally...

Hi all.. Currently I'm mess up myself with a study of an improvement of incineration fly ash deposition in horizontal circular ducting hapen in my incineration plant. This plant treated the hazardous industrial waste as a fuel using fludised bed reactor and silica sand as an innert...

Homework Statement A plane traveling horizontally passes overhead at a height h at t=0. at time t=t1 a sonic boom i heard. b.) Determine the speed of the Plane Ma=1/sin(pheta) pheta=arctan(h/x) Ma=1/sin(arctan h/vt) I think I've done it correct up to this point... Do i have to...

Homework Statement A moving 2.7 kg block collides with a horizontal spring whose spring constant is 356 N/m. The block compresses the spring a maximum distance of 13.0 cm from its rest postion. The coefficient of kinetic friction between the block and the horizontal surface is 0.24. What is...

[SOLVED] The Flea Homework Statement A flea, jumping with its highest possible initial speed, can jump to a maximum vertical height of 1 cm. What is the time spent in the air by the flea during the vertical jump? What would be the time spent in the air if the flea were instead to leave the...

Homework Statement A world-class sprinter can burst out of the blocks to essentially top speed (of about 11.5m/s) in the first 15.0m of the race. a.) What is the average acceleration of this sprinter? b.) How long does it take her to reach that speed? Homework Equations The...

Homework Statement A ball is thrown into the air with an initial vertical velocity of 5.0m/s in addition to its horizontal velocity of 25.0m/s, how far would the ball travel horizontally before it reached it's peak? Homework Equations vf = vi + at I've also tried vf = 1/2g +at...

[SOLVED] Projectile and Horizontal Distance Homework Statement A projectile launched at an angle \theta to the horizontal reaches a maximum height h. Show that its horizontal range is 4h/tan\theta Homework Equations Can you help me figure out how to get this setup properly and what...

1. a table is being sanded. in the process, the sandpaper is rubbed back and forth 30 times over a distance of 0.6m. it is pressed against the table with a normal force of 1.5N, and the coefficient of kinetic friction is 0.85. how much work is being done by the kinetic frictional force during...

vertical and horizontal asymptotes of the curve of f(x) = (x^2+x-6)/(9-x^2 ) are respectively : a) x=3,x=-3,y=-1 b)x=3,y=-1 c)x=3,y=1 d)x=-3,y=-1 i did the infinit limit to find the horizontal asymptote and i got -1 then to solve the vertical; 9-x^2 = 0 and...

Hi all, I'm wondering why we see those horizontal and vertical stripes of lights when looking at a light source (see e.g. http://apod.nasa.gov/apod/image/0601/pleiades_gendler_big.jpg" ). Why are these lines of light present in the first place and why are they only horizontal and vertical in...

Recently a thin black horizontal line appeared across my computer screen. At first it was there for a while then went away, now it seems to be permanently there. Anyone know why it is there or how to get get rid of it.

Homework Statement You use 30N (**Not 25 N, that was a typo) to slide a wooden box that is 12 kg across a floor at constant velocity. What is the coefficient of kinetic fricition? Homework Equations Ff=coeff of kinetic friction (mu k) m*g ?? not sure. The Attempt at a Solution...

1. A 41g object is attached to a horizontal spring with a spring constant of 15N/m and released from rest with an amplitude of 22.4cm. What is the velocity of the object when it is halfway to the equilibrium position if the surface is frictionless? Answer in units of m/s. Homework Equations...