Max Definition and 1000 Threads

Homework Statement This is the question straight from my worksheet... Tarzan tries to cross a river by swinging a vine that is 10.0 m long. His speed at the bottom of the swing is 8.0 m/s. Tarzan does not know that the vine has a breaking strength of 1.0 X 10^3 N. What is the largest mass...

Hello all, If i use 4-bit A-D converter to convert an analog voltage of say 8 volts, then can some one tell me what's the maximum possible error that i can expect in my result and how to predict it before performing experiment. Thanks.

Hello, I'm conducting an experiment about how contact force and surface quality affect friction. I know that friction is affected by both, as my data suggests. I measured the static forces of several weights on two different surfaces, and found that indeed the max static force increased as...

Homework Statement Styrofoam has a density of 300 kg/m3. What is the maximum mass that can hang without sinking from a 40-cm-diameter Styrofoam sphere in water? Assume the volume of the mass is negligible compared to that of the sphere. Homework Equations FB=poVog Volume of sphere...

Homework Statement The steel shaft of a socket wrench is 18mm diameter and 450mm long. If the allowable shear stree is 70 MN/m^2. Homework Equations i) What is the maximum permissible torque T that may be extered with the wrench? ii) Through what angle (theta) in radians will the shaft...

An is a bounded sequence which converges to 0. An>0 for every n. prove that in this sequence we have a maximal member ?? again its obvious because if a sequence is descending and it converges from a positive number to 0. so 0 is the larger lower bound and our first member must be the...

Homework Statement A 300g oscillator has a speed of 95.4 cm/s when its displacement is 3.0 cm and 71.4 cm/s when it displacement is 6.0 cm. What is the oscillator's maximum speed? Homework Equations x = Acos(\omegat + \phi) v = -\omegaAsin(\omegat + \phi) vmax = \omegaA v =...

Homework Statement A 284 g oscillator has a speed of 94.86 cm/s when its displacement is 2.98 cm and 74.06 cm/s when its displacement is 5.92 cm. What is the oscillator's maximum speed? Homework Equations Vmax=2pi*f*A The Attempt at a Solution confused as to wat the AMP would be

Homework Statement There is a semicircle with radius 1. Two circles are inscribe in it with centres C1 and C2 and radius r1 and r2 respectively. Find the maximum possible value of r1+r2 Here is the picture, I have drawn. http://img143.imageshack.us/img143/8392/circlesdn3.png The Attempt...

Homework Statement An ideal spring has a spring constant k = 30 N/m. The spring is suspended vertically. A 1.1 kg body is attached to the unstretched spring and released. It then performs oscillations. (a) What is the magnitude of the acceleration of the body when the extension of the...

Homework Statement Point P(x,y,z) lies on the part of the ellipsoid 2x^2 + 10y^2 + 5z^2 = 80 that is in the first octant of space. It is also a vertex of a rectangular parallelpiped each of whose sides are parallel to a coordinate plane. Use Method of LaGrange Multipliers to determine the...

Rope with mass m is being dropped on a scale. What is the maximum weight the scale will register? Length of the rope is 1 and it is dropped from thee stretched out position.

Given is a 6' long 40 lb bar hung horizontally by a pin O at its end. It is released from its horizontal position and hits a stopper after reaching a 30 degree angle with the horizontal position at which it started. I am asked to find the value x for which the angular velocity is a maximum and...

Homework Statement Review problem. A flexible metallic wire with linear density 3.00 multiplied by 10-3 kg/m is stretched between two fixed clamps 64.0 cm apart and held under tension 301 N. A magnet is placed near the wire as shown in Figure P31.25. Assume that the magnet produces a uniform...

Homework Statement I'm trying to develop an expression for the maximum accerlation of a person pushing an object up a slope. I've figured out an expression for acceleration using F = MA based on the forces acting on the person and the object. Now I need to find the max accerlation. We...

Max resultant of 2 vectors... Homework Statement What is the maximum possible resultant of two vectors with magnitudes of 20 and 8 units? The Attempt at a Solution i really honestly just don't get it, i know to some of you it may be really simple but can somone please explain this...

(x^2 + y^2)*e^(y^2 - x^2) I am having trouble finding the critical points. Fx=2xe^(y^2-x^2)(1-x^2-y^2)=0 Fy=2ye^(y^2 - x^2)(1+x^2 +y^2)=0 or 0=x(1-x^2-y^2) 0=y(1+x^2+y^2) now, finding all the roots is giving me trouble. x and y obviously = 0, but I am unsure how to move forward to...

Homework Statement A block of mass mblock = 1.5 kg rests on a cart of mass mcart = 3.5 kg, which moves without friction on a horizontal surface. The coefficient of static friction between the block and the cart is µ = 0.7. The cart is accelerating to the right. a) What is the maximum...

Consider a frictionless track ABC as shown in Figure P8.23. A block of mass m1 = 8.00 kg is released from A. It makes a head-on elastic collision at B with a block having a mass of m2 = 14.0 kg that is initially at rest. Calculate the maximum height to which m1 rises after the collision...

Homework Statement A daredevil on a motorcycle leaves the end of a ramp with a speed of 39.5 m/s as in Figure P5.23. If his speed is 38.0 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance. Homework Equations Eo =...

A car can negotiate an unbanked curve safely at a certain max speed when the coefficient of static friction between the tires and the ground is 0.88. At what angle should the same curve be banked for the car to negotiate the curve safely at the same maximum speed without relying on friction...

a relaticistic particle collide with another rest particle. what is the maximum energy transmitted to the particle after collision?

Hey all, I am having trouble determing how to get the max amplitude of an underdamped oscillation. Can someone please tell me where do I start form.

an object is thrown upwards, at the top of the path it has a) zero acceleration b) maximum momentum c) maximum kE d) is at equillibrium e)none of the above i know accelarion is 9.8m/s^2 i also know is not KE since at the top is potential im confused of the other two

Homework Statement A car in a roller coaster moves along a track that consists of a sequence of ups and downs. Let the x-axis be parallel to the ground and the positive y-axis point upward. In the time interval from t=0 to t=4 s, the trajectory of the car along a certain section of the...

Homework Statement A 710kg boulder is raised from a quarry 191m deep by a long uniform chain having a mass of 595kg. This chain is of uniform strength, but at any point it can support a maximum tension no greater than 2.80 times its weight without breaking. How do i find the maximum...

Homework Statement If a salmon swims straight upward in the water fast enough to break through the surface at a speed of 2.5 meters per second, how high can it jump above water? Homework Equations i don't know, because all i know is speed. The Attempt at a Solution is...

Homework Statement A car enters a turn whose radius is R. The road is banked at angle Theta, and the friction coefficient is mu. Find the max and min speeds for the car to stay on the road without skidding sideways. Homework Equations W = mg N = -W Friction force = f = muN Centripetal...

The max radius a fallling liquid drop can have without breaking apart is given by the equation: R=√(σ/gρ) where the rho is density of liquid (1000kg/m^3), and the surface tension is .7275J/m^2. g is gravity I am asked to determine the max radius of a drop in units of cm at 20...

Ok I've been trying to do a problem and I can't seem to get it. A rocket is launched from the origin with an acceleration of 20m/s^2 at an angle of 30.0 degrees above the horizontal. The launch acceleration lasts for 2.00 seconds at which time the fuel is exhausted. The rocket then falls with...

Figures that the only problem I have trouble with is the one the book considers to be "easy": Homework Statement The speed of a projectile when it reaches its maximum height is one half its speed when it is at half its maximum height. What is the initial projection angle of the projectile...

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...

Hello, I got the following problem; Find the min and max of the following function, on the following interval; f(x) = x^3 - 6x^2 + 9x + 15, [0, 5] Ok, to my knowledge, what I need to do is I: Find the first derivative and equal it to zero, so; f'(x) = 3x^2 - 12x + 9 0 = 3x^2 -...

Lagrange mult. ---finding max Homework Statement [/b] probability mass function is given by p(x1,...,xk; n, p1,... pk) := log (n!/x1!...xk!) p1^x1 p2^xk Here, n is a fixed strictly positive integer, xi E Z+ for 1 < i < k, \Sigma xi=n, 0 <pi <1, and \Sigma pi=1 The maximum...

how can i get greater performance from an standard inverter duty motor( marathon black max). I am in the process of buiding an inverter/controller to use as part of an EV conversion.

1. Derive an expression for the vertical deflection v of the beam of figure Q1 b) if E=200GPa and I= 750*10^-6 m^4, find the position and magnitude of the maximum upwards vertical deflection. http://photos-d.ak.facebook.com/photos-ak-snc1/v319/114/101/695150024/n695150024_1209371_3981.jpg...

A certain freely falling object requires 1.5s to travel the last 30.0 m before it hits the ground. from what height above the ground did it fall? The answer is 32.8 m but i don't no how to get it. please help

Imagine a hollow sphere made of perfect material. Its walls are perfectly resistant to any thermal and mechanical stress and they can't be distorted.Suppose the interior of the sphere is completely filled with water.The whole system is at room temperature and standard atmospheric pressure. If...

Homework Statement A projectile is launched with an inital velocity of 30 m/s so that it covers a horizontal range of 45m. Determine the maximum height reached by the projectile. (There are two answers) I know the answers are 2.96m and 43.0m. but I only know how to find the first. :(...

Homework Statement 1. Homework Statement A war-wolf, or trebuchet, is a device used during the Middle Ages to throw rocks at castles and now sometimes used to fling pumpkins and pianos. A simple trebuchet is shown in Figure P8.77. Model it as a stiff rod of negligible mass 3.00 m long and...

given the cutoff potential (0.25 V) and wavelength (578 nm), how do i find the maximum kinetic energy of the electrons ejected from photoelectrif surface, in both eV and J? my guess is, KE = e Vo = (1.6 x 10-19) x (0.25 V) = 4.0 x 10-20 J but if i convert that to eV, i get the same...

Homework Statement A Rocket is initially at rest on the ground. The rocket flies off in a straight line at an angle 53.1 degrees above the horizontal with a constant acceleration of magnitude \textbf{g}. The engines stop at a time \textbf{T} after launch, after which the rocket is in...

Homework Statement In a television set, electrons are accelerated from rest through a potential difference of 23 kV. The electrons then pass through a 0.29 T magnetic field that deflects them to the appropriate spot on the screen. Find the magnitude of the maximum magnetic force that an...

Homework Statement An LR circuit consists of an inductor with L = 2.3 × 10-4 H and a resistor with R = 1.10 Ω connected in series to an oscillating source of emf. This source generates a voltage ε = εmaxsin( ωt) with εmax = 0.80 V and ω = 6.00 × 104 rad/s. What is the maximum current in...

How would i do this?

Customer of mine is wanting me to confirm that a hydraulic fitting I am selling him will withstand 800F. The fitting is a standard issue hydraulic fitting (#12 BPP Female Coupling) that will be welded to 6" SHD 80 pipe. The pipe is on the exhaust side of a diesel engine onboard a cruise ship...

does anyone know how the formula for calculating max deflection was derived? The formula is (Force x Length^3)/(48 x E x I). I think it was through intergration but if anyone knows more could you please let me know? thanks! :)

Homework Statement http://img126.imageshack.us/img126/6400/picex8.jpg" Determine the maximum power that can be delievered to the varaible resistor R in the circuit of Fig 4.139. Homework Equations The Attempt at a Solution I am not sure how to handle this because the...

When kicking off the ground, what is the maximum amount of force that human's can exert? Any references?

I realize that this has been experimentally confirmed in any number of ways, based on the external application of energy to a particle. I have read articles on this subject, ranging from the magazine variety to texts by famous physicists, over the last 40 years. My question relates to the...