Floating Definition and 273 Threads

Homework Statement A spherical aluminum ball of mass 1.26 kg contains an empty spherical cavity that is concentric with the ball. The ball just barely floats in water. Calculate a.) the outer radius of the ball. b.) the radius of the cavity. Homework Equations I think I have it...

Some question about floating seal Hi, everyone, I am designing a pulley that can be placed in 10-25m slurry (or you can treat it as sea water I think). Some ppl suggest that using a floating seal is much better than lip seal with back bone in such relatively high pressure situation. Due to the...

While reviewing the Archimedes Principle with my AP students using ConcepTest questions from the Wilson, Buffa, Lou text I came across an answer that I believe is incorrect. The question was the second question in a series of questions about a helium filled balloon. The first question asked...

Homework Statement A box is floating in a liquid. It is pushed down then released to oscillate. How do I determine the period of this oscillation? No idea where to go with this one. Homework Equations The Attempt at a Solution

Is there a difference in submerged objects and floating objects? I know in floating objects that the Force of Buoyancy has to equal the Force of the object, but I'm not sure about submerged objects. What exactly is a submerged object? Another question I have: what exactly does volume have...

Homework Statement A cube of 15 cm is floating at the surface between water and oil. The oil has a density of 810 kg/m3. If the cube floats so that it is 52% in water and 48% in the oil, what is the mass of the cube and what is the buoyant force on the cube? Homework Equations...

Homework Statement another conceptual problem I'm having here, goes like this; A piece of ice floats in a glass filled with water. The ice contains a small stone, so that when the ice has melted the stone will sink to the bottom of the glass. What will happen to the water level of the glass...

Hello, I'm curious as to the name of a particular "effect." Imagine a stack of 10 books, uniform in weight and size, each 9 inches across. Now Imagine flaring them out in one inch intervals, forming a staircase. The topmost book is going to be one inch out from the bottom most book, and...

Homework Statement There is a large bed floating in sea with the density of 765 kg/m^3. What fraction of the bed's volume will be under the surface of the water? The density of sea water is 1035 kg/m^3. Homework Equations Fb = Density * v * gravity The Attempt at a Solution I know...

This question came to me as having an obvious answer yet I don't know. If a human is floating in space they bend spacetime themselves and could technically have small stuff orbit them. Sorry for the dumb question; just been bothering me. thanks for any help

The Problem Hi, I just got this question in a physics class that I am taking, I have been looking at it for about 30 minutes and can't seem to crack it, probably doesn't help that I'm learning it in another language but anyways. A Ice cube of temperature 0 degress Celsius is floating on water...

Hey! Been doi some coursework from a text but can't seem to find any solutions so don't know if I am even remotely close to the right answer. Q. A steel ball can float on water due to the surface tension effect. a) Determine the maximum diameter of a steel ball that would float on water...

Homework Statement A 17.85 cm diameter, 32.4 cm tall steel cylinder (ρsteel=7900 kg/m3) floats in mercury. The axis of the cylinder is perpendicular to the surface. What length of steel is above the surface? Homework Equations vsub/vobj=(ro)obj/(ro)liquid The Attempt at a SolutionA...

A rectangular block of ice 5 m on each side and 0.5 m thick floats in seawater. The density of the seawater is 1025 kg/m3. The density of ice is 917 kg/m3. a) How high does the top of the ice block float above the water level? b) How many penguins of mass 19 kg each can stand on the ice...

Hello Everyone :) Do any of you know of a floating point Analogue to Digital converter that can handle mega-hertz sampling frequencies? I need a really precise angular acceleration transducer which I'll integrate digitally to get angular velocity. I am using an FPGA to do the integration...

Hello fellow physicists! This is a problem out of my graduate E&M course, and I was hoping some of y'all might have some ideas on it. We have an uncharged conducting sphere. It is floating half-submerged in a bath of oil (with dielectric constant \epsilon ). Now we put a charge Q on the...

I saw a youtube video featuring a floating arm catupult, but I don't quite understand how it works. Could someone give an explanation to help me understand?

Homework Statement A block of wood of uniform density floats so that exactly half of its volume is underwater. The density of water is 1000 kg/m3. What is the density of the block? Homework Equations The Attempt at a Solution I tried 500 kg/m3 divided by 1000 kg/m3

A uniform block of height 0.260 m, floats in water of density 1000 kg/m3. The bottom of the block is 0.2530 m below the surface of the water. What is the density of the block? fb = mg m=(pf)(v) d = m/v What i did was find the mass, using the volume of what is submerged, then when i found...

This should be an easy one, but my PC is bugging me! Based on the floating point definition: F = \pm( \stackrel{m}{\overline{B^{t}}})B^{e} Where B is the base (usually 2), m is the mantissa and varies from 1 \leq B^{t} - 1. e is the exponent (1024 for double and 128 for single...

Homework Statement A cylinderical rod of length (l), and diameter (d) and evenly distributed mass (m) is oscillating harmonically (ie y(t) = Acos(wt)) with a driven frequency that makes the rod stable in the upright postion (ie inverted pendulum) A ring/disc of mass m' is fitted over the rod...

Hello, How do i convert 1/3 to floating point (IEEE 754) ?

This is a program to slove differential equation using fourth order Runge-Kutta method. The question is dy/dx=x2+y2 when y(0)=0, h=0.2 find y(0.4) (Ans= 0.021360) #include<stdio.h> #include<conio.h> float f(float x, float y) { return (x*x+y*y); } void main() { float...

So this is a problem my friend was doing. I don't remember the specific values for the variables, but it should be ok. There is a speck of dust floating above an infinite plane. The speck of dust has a charge q1. The plane has a charge density of sigma= xC/m^2. What is the mass of the speck of...

1. Homework Statement A hot-air balloon plus cargo has a mass of 1890kg and a volume of 11430m^3. The balloon is floating at a constant height of 6.25m above ground. What is the density of hot air in the balllon? 2. Homework Equations : The force of buoyancy is equal to...

Im confused by this question: A block of wood floats above water with 90% of its volume submerged. Oil with a density of 875kg/m^3 is then poured over the block so that it covers the entire block. Find the fraction of the block now submerged in water. I know that the fraction of the block...

Suppose we drop a bottle cork on water. It has a shape similar to -rougly- a pyramid i.e. upper area A1 is smaller than bottom A2. Therefore it's vertically as well as horizontally symmetric. But as we drop it, it does not stay vertical but horizontal making upside and downside areas (A) equal...

Homework Statement A block of wood floats on water. A layer of oil is now poured on top of the water to a depth that more than covers the block.If 75% of the wood is submerged in water before the oil is added, find the fraction submerged when oil with a density of 715 kg/m3 covers the block...

Hi! I'm new to the forums and this is the first that I'm posting something :D! I have a quick question from my textbook that I got wrong. Can someone please help me out! Thanks in advance! Question: An ice cube is floating in a glass of water that is filled entirely to the brim. When the...

what are the floating points of a computer?

Why floating input is considered as HIGH in TTL based logic ckts ?

[SOLVED] Floating Weight When a truck drives onto a river ferry the ferry sinks 0.0367M. The length and width of the ferry are 15.24M and 6.10M respectively. Determine the weight of the truck. Just not quite sure I'm setting it up correctly, or getting the right answer. I originally thought of...

[SOLVED] Simple Harmonic Motion - Floating Object Homework Statement The problem states that an object is pushed down and released. It is floating. The density is P(block) and the area is A and its height is h The fluid's density is P(fluid) The Problem asks to show that it executes...

[b]1. A hollow cubical box is .30 m. This box is floating in a lake 1/3 of its height beneath the surface. The walls of the box have neglibe thickness. Water is poured into box. what is the depth of the water in the box at the instant the box begins to sink? pwater= 1000kg/m3 Fb= Pfluid G V...

im trying to make a lantern float but what kind of formulas should i consider in trying to make it float? i want it to be like this. http://upload.wikimedia.org/wikipedia/commons/9/94/SkyLanternRichy01.jpg

"Floating Halo" This is an oversimplification that assumes the Earth is perfectly spherical, ignores gravitation pulls from objects other than the earth, assumes that a superstrong material could create a giant structure that can withstand enormous stress and that it's density is constant...

I want to create a floating boat ramp for my dogs. The dogs weigh 50 and 75 lbs each. I have seen commercial ramps using floats to stablize and support the ramp while the dog walks up it. My question is if I make my own, how many pounds of buoyancy must the floats support in order to allow...

Imagine bubles rising or weights sinking in water. They sink or rise perpindicular to the sphere of the earth. In space however a tiny object would be falling or rising omnidirectionally. The question i ask is, does matter float or sink in space. People use the bowling ball in the sheet...

Consider a floating point binary notation with 16 bits. From left to right, it consists of 1bit for the sign (0= "+"), e bits for the exponent represented in Excess~2^{e-1} and the remaining bits for the decimal part of the mantissa, normalized between 1 and 2 (1 \leq m <2). a) Calculate the...

Ladies and gents, My electrical knowledge is not very complete and I have always had gaps which I'm slowly hoping to fill in! My current question is regarding Floating Circuits. As far as I understand, a floating circuit is a circuit, isolated from say the mains because it has no physical...

Homework Statement An oak block of ρ = 0.9 g/cm^3 and dimensions V = 10cm x 20cm x 20cm is floating in water of ρ0 = 1 g/cm^3. The block is slightly pushed into water and then released. Determine period, T, of oscillations. Homework Equations I'm not sure how to derive the set up of the...

We know that the density of Al is greater than the density of water, yet why can an aluminum boat can float?

Homework Statement There is a ship of mass M floating on a river. The upper portion of the ship has a uniform cross-sectional area A and the density of water is d. Now the ship is displaced a further depth y into the water and released. What is the resultant force acting on the ship when it is...

Homework Statement So I was giving a problem to "calculate" the number of flops in class today.. Now, I read the examples in the textbook, and they are hard enough to understand...I am hoping that some one here can push me onto the right track :cool: Homework Equations find the...

I am trying to build my own boat lift that uses plastic tanks submerged to lift the boat when they become filled with air. My problem is that I need to lift about 10,000 lbs and i don't know how large the tanks need to be ( how much water they need to displace ) to lift that amount of weight...

Would it be feasible/practical to construct a large floating space telescope that perhaps would be incorporated into the structure of a large dirigible, blimp or balloon. Or perhaps it would simply be carried aloft by the said buoyant platform? Has anyone ever before proposed the construction...

Homework Statement When you walk along a floting log in water, why does it move in the opposite direction? Is it because of the friction from you walking pushes the log in the opposite direction, or is there something else?

hi guys.. can i ask you about this problem? A log is floating on swiftly moving water. A stone is dropped from rest from a 75meter high bridge and lands on the log as it passes under the bridge. If the log moves with a constant speed of 5 meters per second, what is the horizontal distance...

What is the record for the uppermost occurence of life in our atmosphere?

How do i show the floating point reprensetation of a number like say ... 100! or 1000! in maple?? i am relatively new to maple so i am not familiar with many of the commands