Slide Definition and 174 Threads

The laser ranging of the moon doesn't make sense. The moon has a special mirror on it that doesn't reflect incoming light along the same angle as the angle of incidence only on the opposite side of the perpendicular, but instead reflects light back exactly on the same path as the light's...

Homework Statement Two horizontal parallel conducting rods are connected such that a conducting crossbar free to slide along them has a constant current I running through it (Figure 1) . The rods are separated by a distance ℓ and are in an external uniform magnetic field of magnitude B directed...

Homework Statement a boy is sliding down a curved slide, another boy with same mass is sliding down a straight slide. if both slides have the same height, which of them will reach the bottom first? Homework EquationsThe Attempt at a Solution i m thinking if it is related to 1/2 mv^2 = mgh and...

Homework Statement Homework Equations F = ma; f = µN The Attempt at a Solution Let F' be the action-reaction force between box m and box M f be the friction on small box m For small box m: F' = ma f - mg = 0 µF' - mg = 0 since f = µF' µma - mg = 0 since F' = ma a = g...

Homework Statement You place a m=2kg block at the bottom of a playground slide and give it a quick kick, giving it an initial speed of vi=12m/s. The slide is inclined at an angle of 35 degrees and the coefficient of kinetic friction between the block and the slide is mu_k=0.2. Use g=9.8m/s/s...

I'm taking a history of mathematics course, and we talked about slide rules today, and now I want to learn how to use one. Where would I look for one? Any recommendations about which models/features to look for?

Homework Statement A particle of mass M is released from rest at the top of a frictionless slide that is h distance from the ground. The lowest section of the slide is part of a circle with radius R. The setup looks like a candy cane. At its lowest point (bottom of circle) what is the normal...

Homework Statement A cube with m mass is released from the top of a slide, of h height, with a horizontal distance of d. [/B] Homework Equations Assuming there is no friction between the cube and the slide, ¿what is the minimal information i need to calculate the speed of the cube at the end...

Homework Statement A block with mass m rests on a smooth, frictionless ramp with mass M and height h. The ramp itself sits on a frictionless horizontal surface in which it is free to slide. The block slides smoothly down the ramp from rest. We want to find the speed of the block after it has...

Homework Statement A child slides without friction from a height h along a curved water slide (Fig. P5.44). She is launched from a height h/5 into the pool. Determine her maximum airborne height y in terms of h and η. (Use q for η and h as appropriate.) (Fig. P5. 44) Homework Equations I know...

"A calculator is a thing that will give you the wrong answer to 15 decimal places."

Homework Statement Hi guys! Here is my problem: A Children's slide is 20 ft long and makes an angle 30° with the horizontal. If the coefficient of sliding friction is 0.05 and the child starts from rest at the top, with what speed does he reach the bottom? I want to say it is about...

"If the height of the water slide is h = 3.2m and the person's initial speed at point A (at the top of slide) is 0.54m/s, at what location does the swimmer splash down in the pool?" I saw a thread with the same question back from 2005 but it is now closed. I understand that you have to use...

Hello guys. I was wondering about slides in a water a park and how they calculate the landing distance to predict where a person who land in order to keep them safe by landing them in the water of course... and also at an appropriate speed. So I want to do an experiment on this by making a...

Hi, We have two slides. Slide A and B. The height difference between the bottom and the top of the slides is the same. However, the angle of inclination of the slides are different. Slide A is a more direct slide while slide B is less direct. If a child slides down both of them, on which...

a person slides down a water slide that is 61 m long and has a slope angle of 24 degrees and the end is a ramp with a height of 3.66 m with an angle of 30 degrees to the horizontal determine the magnitude and direction of the velocity of the person when they just fly away from the ramp and the...

Hello, I am working on a project in which I want to project a projection back into a slide projector using a concave mirror. The lens of the projector has a focal point of 100mm (and an aperture of 2.8) and I want to have approximately 1 meter space between the mirror and the...

Homework Statement A mass slides down a segment of a circle starting from rest at A. It has a radius of R. Find the speed of the mass at the bottom ignoring friction. Also, find the time for the ice cube to go from A to B. As far as solving for the time I am told not to calculate the...

Homework Statement A 58.5 kg child slides down a water slide with a velocity of 1.2 m/sec at the top. At the bottom of the slide, she is moving horizontally, y=1.5 meters above the water. She splashes into the water d=2 meters to the left of the bottom of the slide. 1) Assuming potential...

Homework Statement A wheel of radius R=50cm rolls along the ground with velocity V=2m/s. A pebble released on top of the wheel so that it is instantaneously at rest on the wheel. The co-efficient of friction between wheel and pebble is μ=1. The pebble starts to slide down when it has rotated...

Homework Statement Find the time taken for an object to slide down an inclined plane given the coefficient of friction, length of slope and angle of incline. The coefficient of friction is 0.3. The angle of incline is 30°. The length of the slope is 6m. Homework Equations F=μN...

Homework Statement A disk rotates with angular velocity w. Two masses, Ma and Mb, slide without friction in a groove passing through the cnter of the disk. They are connected by a light string of length L, and are initially held in position by a catch, with mass Ma at distance Ra from the...

If you have a push out window the whole area is open but much of the wind is blocked depending on the angle. With a slide window you often have half the open area but you can get direct wind over 180 degree angle. Which one will cool the room down faster under which circumstance? If there is...

I had always used very low cost phones with minimal features. Finally, I've set my eyes upon something expensive. Its Nokia 6700 slide. I WANT this phone. Sad thing is Nokia discontinued it alongside Nokia 6600i slide, Nokia n86 8mp etc. When I wanted a multi-feature phone, I looked for >5MP...

1. Homework Statement As shown in the figure to the right, a spool has outer radius R and axle radius r. A string is wrapped around the axle of the spool and can be pulled in any of the directions labeled by I, II, or III. The spool will slide to the right without rolling on the horizontal...

I'm in the market for a large slide rule for my collection. If you know of an available one please let me know. http://albany.craigslist.org/wan/3460782750.html

Homework Statement A 285Hz sound wave is directed into one end of a trombone slide A microphone is placed at the other end to record the intensity of sound waves that are transmitted through the tube. The straight sides of the slide are 80cm in length and 10cm apart with a semicircular bend...

Homework Statement I have been trying this question since 5 hours but I am lost ! Any help would be appreciated Some moron kids are trying to tip over a storage bin as shown. The bin weighs 7100 N, w = 2.2 m, h = 3 m, d = 1.6 m, and theta = 20 degrees. With what force do they need to push in...

Homework Statement A box of mass   4.0 kg is placed at rest on a ramp. The coefficients of static and kinetic friction are $&  0.35 and $%  0.22, respectively. As the ramp is slowly raised from a horizontal orientation, find the critical angle above which the box starts to slide...

Three children, Aaron (20kg), Beth (25kg) and Charlie (30kg) take off on sleds at the top of a hill. Who will reach the bottom first? (μ=.15) a)Aaron b)Beth c)Charlie d)All of them reach at the same time f=μN The answer is d. my first guess was A because i thought that since Aaron...

Hiya folks, In an effort to get the students in my Advanced Physics class to rely less on calculators and to develop their math skills, I am going to give them the option of using slide rules this year. I am offering them a small bonus on tests if they use slide rules instead of calculators...

Hi, everyone, good day. first scenario will be: let say, there are two cars, they share the same features except one, the mass of two cars are different (the mass of wheel, however, is the same). Now, if the two cars are accelerated to the same speed and then the engine is turned off, they...

Homework Statement A wet bar of soap (m=150g) slides down a 2m long ramp at 7.3° relative to the horizontal. How long does it take to reach the bottom? Homework Equations d = 1/2at2 The Attempt at a Solution The answer is apparently 1.81 seconds, although I can't figure out how...

Optics-Lenses-- 1cm thick glass slide is perpendicularly set I don't know how to do the question below. It doesn't say whether the whole system in in the air or in a more refractive "environment" (i.e. submerged in oil). It too doesn't say the exact position where the lens is set, and I think...

Homework Statement So there 2 boxes of nails being lifted at a construction site and one box is 20 kg and the other 10 kg. and the plank tilts towards the heavier box. if the coeficient of static friction is 0.4 draw a FBD for each box of nails and use it to calculate the angle at which...

Homework Statement A heavy block of mass m is slowly placed on a conveyer belt moving with speed v. If coefficient of friction between block and the belt is u (mu), the block will slide on the belt through distance ? Homework Equations The Attempt at a Solution i am not able to...

Homework Statement A boy is sliding down a long icy hill on his sled. In order to decrease his mass and increase his velocity, he drops his heavy winter coat and heavy boots from (he sled while he is moving. Will his strategy work? Homework Equations KE=1/2mv2 p=mv mgh The...

Homework Statement one fourth length of a uniform rod of mass "m" and length "l" is placed on a rough horizontal surface and it is held stationary in horizontal position by means of a light thread. The thread is then burnt and the rod starts rotating about the edge. Find the angle between the...

A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force) acts on her. The student has a mass of 70 kg, and the height of the water slide is 11.3 m. If the kinetic frictional force does -7.6 × 103 J of work, how fast is the...

Homework Statement The coefficient of static friction between a block and a horizontal floor is 0.40, while the coefficient of kinetic friction is 0.15. The mass of the block is 5.0 kg. If a horizontal force is slowly increased until it is barely enough to make the block start moving, what is...

A 50.8 kg child slides down a water slide with a velocity of 0.9 m/sec at the top. At the bottom of the slide, she is moving horizontally, y=2.5 meters above the water. She splashes into the water d=3 meters to the left of the bottom of the slide. a) Assuming potential energy to be zero at...

Homework Statement http://img196.imageshack.us/img196/3732/31591397.jpg An area slanted at an angle of 30 degrees turns aroun a vertical axis as depicted in drawing. The period time of the rotational motion is 3 seconds. On the surface is an object whose mass is 6kg. The static friction...

Homework Statement A parent takes their child to a water slide which is shaped similar to a portion of a parabola (see diagram). There is an elevator 3m from the edge of the pool. The elevator takes the rider to the top of the slide which is 19m above ground. The rider slides down and falls...

Homework Statement The picture of a tree on a 35 mm color slide is 1.7 mm high. It is to be projected onto a screen 8.0 m from the slide, and is to appear 559 mm high. a) What focal length lens (in meters) is needed? b) What is the distance in meters between the lens and the slide? c)...

Homework Statement A parent takes their child to a water slide which is shaped similar to a portion of a parabola (see diagram). There is an elevator 3m from the edge of the pool. The elevator takes the rider to the top of the slide which is 19m above ground. The rider slides down and falls...

Homework Statement At 6:52 pm PDT Wednesday, July 10, 1996, a large block of granite with an estimated volume of 78,000 cubic yards detached from the cliff between Washburn Point and Glacier Point in Yosemite Valley. The estimated mass of the granite is 80,000 metric tons...

Let's say I apply a horizontal force on an object sitting on a table. So there's friction. I know how to determine whether it will move or not-- I just see whether the applied force is bigger than the friction force. F > Fs there's movement Fs < F there's no movement That I know. But what...

Greetings, I'm trying to find out whether or not straight multi-walled carbon nanotubes (MWCNT) have the ability to slide telescopically. Although I have no formal education on the subject, my suspicion is that quantum interactions will inhibit axial motion, but I'm intrigued as graphite...

Three blocks on a frictionless surface are connected by massless strings, with M1 = 1.30kg, M2 = 2.20kg, and M3 = 3.40kg. Due to the force F acting on M3, the system accelerates to the right. Given that T1 is 4.10Newtons, calculate T2. M1 = 1.30 kg M2 = 2.20 kg M3 = 3.40 kg and T1 =...

Homework Statement Suppose a slide is 35.0 meters high, but is a straight slope, inclined at 45 degrees with respect to the horizontal. a) find the speed of a 60.0kg thrill seeker at the bottom of the slide, assuming no friction. b) if the thrill seeker has a speed of 20.0m/s at the...