Slope Definition and 770 Threads

an avalanche begins on a ski slope. the mountain is 30 degrees above horizontal. a skier is 100m downhill on path of avalanche 1. how much time does skier have to move out of way if no friction? 2. how much time does skier have if Uk is 0.1? answer= 1. 6.4 s 2...

Homework Statement A block of mass m = 2.80 kg slides down a 30.0° incline which is 3.60 m high. At the bottom, it strikes a block of mass M = 7.00 kg which is at rest on a horizontal surface, Fig. 7-41. (Assume a smooth transition at the bottom of the incline, an elastic collision, and ignore...

Ok as I am a Newb at pyshics I need some help with my homework. *sigh* This is going to be a couple of de de de questions. And here we go: 1. What does the slope indicate on a period(time) vs. amplitude(degrees) graph? 2. What does the slope indicate on a period(time) vs. length(cm) graph...

Homework Statement the line tangent to the graph of f(x) = x-1/x at (2,3) has what slope? The Attempt at a Solution Same story with this problem, I remember doing it but can't remember how to attack the problem. can someone give me a good first step to go off of?

Homework Statement The slope of the line tangent to the curve y^3 + x^2y^2 - 3x^3 = 9 at (1.5,2) is approximately Homework Equations Answer choices A) 0.39 B) 3.2 C) -11.45 D) -2.29 E) -3.2 The Attempt at a Solution Well, I solved for the derivative, but I'm not sure if it was...

Homework Statement I don't know if I am posting in the wrong thread. This is not a question for solving a homework, but a question to help me write some homework students will have to solve. I teach algorythmics to mechanics students. The program they are developing is about driving a car...

1. Homework Statement A wedge with mass M rests on a frictionless horizontal table top. A block with mass "m" is placed on the wedge. There is no friction between the block and the wedge. The system is released from rest. A. Calculate the acceleration of the wedge. B. Calculate the...

Homework Statement I have 12 x,y data points (x is distance, y is elevation) divided into three groups (sets). From those three sets, I created 3 cubic polynomials of exact fit, and now I am supposed to find their difference quotients, graph the difference quotients, and use the graph to...

Homework Statement A mass, m2, on a 30^{o} slope is connected to another mass, m1, by a light string that passes over a frictionless pulley, as shown. The two masses are equal, the slope is smooth, and the acceleration due to gravity is g. What is the scalar equation for mass m2, that...

OK, I have a question I have no idea how to answer (and all my awful undergrad stats books are useless on the matter). Say I make a number of pairs of measurements (x,y). I plot the data, and it looks strongly positively correlated. I do a linear regression and get an equation for a line of best...

Hey everyone, I'm new here, and just wanted to say hi first. Second, I was wondering if anyone would so kind as to help me with this problem. Homework Statement An 80kg skiier has a force of 200N exerted on him down the slope. Now I've already found the acceleration of 2.5m/s^2, however...

1. A boy bushes a 10 kg box 3 m slowly up a 30 degree slope. There is a constant 30 N frictional force directed down the slope. What is the minimum work required for the boy to move the box. 2. W(friction)=fR, Wg=mg3sin(theta) 3. The work of friction is -90J. the Wg is -147 J, so...

[SOLVED] Force on a slope "Franz is skiing in the Alps. He is racing down a steep slope of 50.0 degrees. For waxed skis on snow, we have mu sub k (for kinetic friction)=0.05. What is his acceleration?" I'm so confused... don't I need his mass to even begin to approach this or am I missing...

1. Homework Statement a 5.4kg toboggan carrying 35kg of sand slides from rest down an icy 90m slope inclined at 30 degrees below the horizontal. The sand leaks from the back of the toboggan at a rate of 2.3kgsec^-1. How long does it take the toboggan to reach the bottom of the slope? 2...

Homework Statement a 5.4kg toboggan carrying 35kg of sand slides from rest down an icy 90m slope inclined at 30 degrees below the horizontal. The sand leaks from the back of the toboggan at a rate of 2.3kgsec^-1. How long does it take the toboggan to reach the bottom of the slope...

Homework Help! Homework Statement Gloria, who has mass 60. kg, is skiing on the famous frictionless ski slopes. The slope is making an angle of 30o with the horizontal. How fast, in m/s, will Gloria be going after 10 seconds on the slope? Homework Equations d = v x t vavg = ½ (vf...

Homework Statement Note - I have used (uk) as the symbol for co-efficient of kinetic friction (mew k?). You want to measure (uk) between snow and your snowboard. You measure the angle x the slope makes with the horizontal. You kick your snowboard so it slides up the slope, and then back...

Homework Statement A 50g ice cube can slide without friction up and down a 30 degree slope, compressing the spring 10cm. The spring constant is 25N/m. When the ice cube is released, what distance will it travel up the slope before reversing direction. Homework Equations I am not sure...

Homework Statement In a stage production of Peter Pan, the 60 kg actress playing Peter has to fly in vertically, and to be in time with the music, she must be lowered, starting from rest, a distance of 3.2 m in 2.2 s. Backstage, a smooth surface sloped at 59º supports a counterweight of mass...

Just a simple question, there's a mass on an incline surface and if the parallel force is greater than the frictional force would the mass be accelerating at a constant rate or increasing rate?

Homework Statement An Archer standing on a 15 degree slope shoots an arrow 20 degrees above the horizontal. how far down the slope does the arrow hit if it is shot with a speed of 50m/s from 1.75m above the ground Homework Equations The Attempt at a Solution y component = 50 * cos(20 + 15) -...

Homework Statement A skier is gliding along at 3m/s on horizontal frictionless snow. He suddenly starts down a 10 degree incline. His speed at the bottom is 15 m/s. a) what is the length of the incline? b) how long does it take for him to reach the bottom? we know: Vo=3m/s Vf=15m/s t=...

For my High School physics class, we're doing a lab based on galileo's experiment. My question is how does the slope change with the ramp angle? I'm just confused with all the data points I have. So if anyone could help me, I'd be much obliged.

How do you find the maximum range a projectile will hit (shot at angle alpha) on a slope (angle theta) when theta is less than alpha. Also, what is the best angle for alpha. I would only like a head start, do not post the answer please. We know that there are constants alpha, theta, and Vo...

Find an equation for the tangent to the curve y=1/(x-1) that has slope -1.

Homework Statement I was tutoring a student and could not answer one of his questions. Prove that y = mx +- square root( a^2*m^2 + b^2 ) is the equation for two lines passing through an ellipse Homework Equations (x/a)^2 + (y/b)^2 = 1 is the equation of an ellipse The Attempt at a...

Homework Statement A 5000 kg truck is parked on a 14 degree slope. How big is the friction force on the truck? Homework Equations friction = coefficient of friction X normal force The Attempt at a Solution I tried breaking the weight into components. I used 1.00 as the...

A girl of mass m_G is walking up a slippery slope while pulling a sled of unknown mass; the slope makes an angle theta with the horizontal. The coefficient of static friction between the girl's boots and the slope is mu_s; the friction between the sled and the slope is negligible. It turns out...

Need urgent help with a Slope problem Homework Statement A plane is traveling at a constant velocity at 30 degrees above the horizontal. Weight (W)=86 500 N; thrust (T)=103 000 N. Find the lift force and the resistance force (L= normal force, R=friction) without shifting the cartesian...

This one the last questions on my mechanics paper, its hard to visualize without drawing a diagram i found, but i still can't solve it 1. A tractor of 6000kg approaches a slope at arcsin(0.05) to the horizontal. The non-gravitational resistance to motion on this slope is 2000N. The tractor...

Homework Statement Given the point (1,9) on a curve, and the slope = 4, what is the equation of the tangent line to the point? Homework Equations #1) y-y1 = m (x-x1) or #2) y = mx+b The Attempt at a Solution Using equation #1, I got y = 4x-3 Using equation #2, I got y = 4x+5...

The point P(1,51) lies on the curve y=46 x2+5. (a) If Q is the point (x,46 x2+5), use your calculator to find the slope of the secant line PQ (correct to six decimal places) for the following values of x. .5, .9, .99, .999, 1.5, 1.1, 1.01, 1.001 I plugged all of the values of x into...

Homework Statement A 54 kg skier skis directly down a frictionless slope angled at 12° to the horizontal. Choose the positive direction of the x-axis to be downhill along the slope. A wind force with component Fx acts on the skier. What is Fx if the magnitude of the skier's velocity is (a)...

Homework Statement http://server7.pictiger.com/img/480530/other/forces.png http://server7.pictiger.com/img/480530/other/forces.png I would like to know the forces applied on the quadrant block as shown in the pic. Is there an equivalent force I can take for the whole quad? The block...

:cry: I need a bit of help finding a good source to use to help solve these problems. I am taking a test that is 20% physics (20% chem and the rest are life sciences) and I have not taken physics in over five years. I've been browsing through the internet for over two hours now and the best...

Homework Statement If the slope of a graph of the acceleration of a cart vs. the number of paper clips attached by a string and suspended over a pulley is ( 20 cm/s2) / clip, and if the slope of a graph of number of paper clips needed to maintain equilibrium vs. ramp slope is 47 clips / unit...

units ?? Homework Statement This should be straightforward but I'm not sure what to do. If I make a graph and the Y axis is in cm, and the X is in g, does cm/g make sense? I'm trying to find the spring constant 'k' by using the slope of my graph. When I do this I get a huge number so...

Error bars and slope error ?? Homework Statement I have to construct a graph with three lines. The middle line is 'best fit', one line is 'max slope' the other 'min slope', and error bars need to be drawn. The error for the Y axis is too small to draw so there is only an error bar for X...

Hi, Kinda new here so here goes. I have been asked to drawn a graph B(magnetic field) vs Tan theata and find its slope, ok no problem there. The next question has asked me to use the value of the slope to obtain the value of the strength of the Earth's magnetic field in the region :eek...

This might be an extremely easy question and I'm just over-thinking it, but could someone give me a hand with some grade 10 physics? 1. A downhill skier has an initial speed of 2.5 m/s. She accelerates up to a speed of 20 m/s in 3.8 s. a) Calculate the average acceleration of the skier...

Give the slope of the asymptote for the hyperbola given by the equation 6x^2 - {d}y^2 = 6. Give the value that is positive

Proving slope "m" of a secant connecting two points of the sine curve Homework Statement Write and expression for the slope m of the secant connecting the points Po(Xo,Yo) and P(X,Y) of the sine curve. Use the appropriate trigonometric identity to show that m= sin((X-Xo)/2)/((X-Xo)/2) * cos...

Logically the req. force should be -3430N * cos(15) because it is the direction of the tows motion and it is the force req. to balance (Fy-net = 0, since a=0) - but it is 3430N * sin(15). Why?

Find the points on the graph of y= (1/3)x^3-5x- (4/x) at which the slope of the tangent is horizontal. what i know: - we have to use m=[f(a+h)-f(a)]/h - if we change the equation we can get 3x^4 - 15x^2 -12 - the slope of the tangent is zero. THANX

Homework Statement A car traveling at 22.0 m/s runs out of gas while traveling up a 25.0 degree slope. How far up the hill will it coast before starting to roll back down?Homework Equations Vf^2 = V0^2 + 2ax x = V0t + (1/2)at^2 (maybe?)The Attempt at a Solution I am using an online homework...

Hi I have some data which concists of some points (x,y) and I'm looking for a program that can calculate for me the slope of the linear fit line (trendline) including uncertanity on the slope. Also the y-interception has to bo at 0. My data set includes incertanities on both x and y...

Given: slope of the graph of ln(temperature dimensionless) vs. time slope=-0.0416 -t/tau = ln(temperature dimensionless) I don't know where to put the slope into the equations? I know that the time constant is the tau. Also have -1/tau equation. I tried this...

Homework Statement I have to find the slope of an exponential curve by using log identities. Using basic values such as: (10, 0.692) (30, 1.082) (70, 1.579) Homework Equations The equation is in the form T=Cm^p So the log function is logT=logC + Plog(m) right? The Attempt at a Solution...

A block of mass M resting on a 19.1° slope is shown. The block has coefficients of friction μs=0.788 and μk=0.482 with the surface. It is connected via a massless string over a massless, frictionless pulley to a hanging block of mass 1.86 kg. What is the minimum mass M1 that will stick and not...

Homework Statement A solid cylinder of radius R sits at the top of a slope of angle theta. When it rolls down, what is the minimum coefficient of friction (k) required to make the cylinder roll without slipping?Homework Equations Fx: mgsin(theta) - kmgcos(theta) = ma Torque: kmgRcos(theta) =...