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July 3, 2015

Search: rotational energy solid sphere of uniform density

Number of results: 23,874

Physics
Estimate the terminal speed of a wooden sphere (density 0.770 g/cm3) falling through air, if its radius is 9.00 cm and its drag coefficient is 0.500. (The density of air is 1.20 kg/m3.) (b) From what height would a freely falling object reach this speed in the absence of air ...
January 24, 2010 by ucieng

Physics
Estimate the terminal speed of a wooden sphere (density 0.770 g/cm3) falling through air, if its radius is 9.00 cm and its drag coefficient is 0.500. (The density of air is 1.20 kg/m3.) (b) From what height would a freely falling object reach this speed in the absence of air ...
January 24, 2010 by ucieng

Physics please help!!
A satellite is in a circular orbit very close to the surface of a spherical planet. The period of the orbit is 2.23 hours. What is density of the planet? Assume that the planet has a uniform density.
March 4, 2013 by Jose

Physics
Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of -8q. Sphere B carries a charge of +7q. Sphere C carries no net charge. Spheres A and B are touched together and then separated. Sphere C is then touched to sphere A and separated from it. Lastly...
August 28, 2007 by Mary

Physics
Calculate the rotational inertia of a wheel that has a kinetic energy of 41.6 kJ when rotating at 264 rev/min.
November 9, 2011 by Emily

PHYSICS
Two spheres are launched horizontally from a 1.1m -high table. Sphere A is launched with an initial speed of 5.0M/S . Sphere B is launched with an initial speed of 3.0M/S A. What is the time for the sphere A to hit the floor? and sphere B to hit the ground B. What is the ...
August 25, 2010 by NENE

Physics
Using volume of a sphere, calculate the average density of Saturn (radius = 60,268 km).
March 9, 2012 by Lalane

Physics
A bowling ball rolls without slipping up a ramp that slopes upward at an angle (beta) to the horizontal. Treat the ball as a uniform, solid sphere, ignoring the finger holes. What is the acceleration of the center of mass of the ball? Express your answer in terms of the ...
April 3, 2012 by Joe

PHYSICS
Three small spheres are placed at fixed points along the x-axis, whose positive direction points towards the right. Sphere A is at x = 23.0 cm, with a charge of -10.00 C. Sphere B is at x = 55.0 cm, with a charge of 2.00 C. Sphere C is at x = 57.0 cm, with a charge of -9.00...
May 3, 2010 by Jay

Physics
Update: Planets are not uniform inside. Normally, they are densest at the center and have decreasing density outward toward the surface. Model a spherically symmetric planet, with the same radius as the earth, as having a density that decreases linearly with distance from the ...
April 30, 2015 by Katie

physics
a string supports a solid iron object of mass 180g totally immersed in liquid of density 800kg/m3. calculate the tension in the string if the density of iron is 8000kg/m3.
June 15, 2014 by joelinho

physics
The center of a 4.0 kg sphere and a 7.5 kg sphere are seperated by a distance of 1.5 m where is the center of mass of the two sphere system
February 4, 2008 by melissa

calculus
3. The radius r of a sphere is increasing at a constant rate of 0.04 centimeters per second. (Note: The volume of a sphere with radius r is v=4/3pir^3 ). a. At the time when the radius of the sphere is 10 cm, what is the rate of increase of its volume? b. At the time when the ...
January 3, 2012 by Yoona

Physics
A centrifuge has a rotational inertia of 6.0 10-3 kg m2. How much energy must be supplied to bring it from rest to 420 rad/s?
April 12, 2010 by Max

physic
hi,need help please.thank. A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 2.00 m and a mass of 525 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 4000 rev/min. (a...
November 23, 2009 by Chan

Chemistry
Classify each of the following by the type of solid if forms: a. LiCl b. BaCl2 c. BCl3 d. CCl4 e. NCl3 I have four different types of solids to guess from like Metallic solid, ionic solid, molecular solid, covalent network solid and i dont know which goes with what element
February 4, 2008 by Lauren

physics
A large plane having uniform charge density has an electric field just outside the plane that points directly toward the plane with magnitude 1.25104N/C . What is the surface charge density? Express your answer with the appropriate units.
February 4, 2014 by jrfannin

Physics
Suppose the density of the Earth was somehow reduced from its actual value to 1300 kg/m3. What would be the value of g, the acceleration due to gravity, on this new planet? Assume the radius does not change. I know that density = mass/volume & the volume of a sphere = 4/3pir^3...
September 20, 2011 by Anon14

AP Physics
A uniform spherical shell of mass M and radius R rotates about a vertical axiss on frictionless bearings. A massless cord passes around the equator of the shell, over a pulley of rotational inertia I and radius r, and is attached to a small object mass m. There's not friction ...
January 27, 2008 by Kristen

AP physics
A uniform spherical shell of mass M and radius R rotates about a vertical axiss on frictionless bearings. A massless cord passes around the equator of the shell, over a pulley of rotational inertia I and radius r, and is attached to a small object mass m. There's not friction ...
January 27, 2008 by Kristen

math
1. Sphere C(-2,1,-3), radius=7. T plane at (4,-2,-1)=? (a) 6x-3y+2z=0 (b) r.(6,3,2)=28 (c) 5x-3y-2z=28 (d) r.(6/7,-3/7,2/7) 2. Sphere (x-1)+(y-5)+(z-2)=49 and planr r.(-2,-6,-3)=0 form which circle?(a) (x-1)+(y-5)+(z-2)=19.53 (b) C(0,0,0), radius=4.42 (c) radius=4.42, C...
March 11, 2010 by Anonymous

maths
1. Sphere C(-2,1,-3), radius=7. T plane at (4,-2,-1)=? (a) 6x-3y+2z=0 (b) r.(6,3,2)=28 (c) 5x-3y-2z=28 (d) r.(6/7,-3/7,2/7) 2. Sphere (x-1)+(y-5)+(z-2)=49 and planr r.(-2,-6,-3)=0 form which circle?(a) (x-1)+(y-5)+(z-2)=19.53 (b) C(0,0,0), radius=4.42 (c) radius=4.42, C...
March 12, 2010 by Anonymous

electrc field inside charged solid
how can electric field exist inside a uniform charge solid... when by gauss law electric field is zero inside a conductor
September 5, 2007 by sumit

Science
The galaxies in the universe are all flying away from each other. The speeds of nearby galaxies are proportional to the distance the galaxy is away from us. This relation, v=Hd is known as Hubble's law and the constant H is known as Hubble's constant. The evolution of our ...
May 20, 2013 by Abhishek Ranjan

gen chem
suppose a compound could point in any of the three directions in the solid and still have the same energy. how many molecules would there be if the total entropy of a solid sample of this compound was 3.48x10^-9 j/k
May 9, 2010 by chemistry

thermodynamics
A volume of gas V at temperature T1 and pressure P is enclosed in a sphere. If is connected to another sphere of volume V/2 by a tube and stop cork. This second sphere was initially evacuated and the stop cork is closed. If the stop cork is now opened and the temperature of ...
March 31, 2012 by frank fred

physics
sphere A has a mass of 4.2*10^-2 kg and is tethered to a wall by a thin thread. Sphere a has an excess of 1.2 *10^12 electrons. Sphere B has a deficit of 3.5*10^12 electrons and is o.23 m from sphere A a) determine the angle between the thread and the wall b) determine the ...
January 12, 2013 by ali

physics
sphere A has a mass of 4.2*10^-2 kg and is tethered to a wall by a thin thread. Sphere a has an excess of 1.2 *10^12 electrons. Sphere B has a deficit of 3.5*10^12 electrons and is o.23 m from sphere A a) determine the angle between the thread and the wall b) determine the ...
January 13, 2013 by josh

physics
A 3.0-kg sphere with a radius of 6.0 cm rolls from rest without slipping 4.0 m down an incline, reaching a speed of 7.0 m/s after rolling for 5.0 s. What is the torque that the friction interaction between the sphere and the incline exerts on the sphere? (Assume that the ...
October 21, 2013 by Anonymous

Physics
A solid of mass 400g in air and when partly is immersed in a certain liquid it has a mass 320g. Given that the relative density is 0.8. Calculate the volume of the solid immersed in the liquid.
January 16, 2011 by Asamoah

Physics
A laser that emits pulses of UV lasting 2.95 ns has a beam diameter of 4.05 mm. If each burst contains an energy of 4.60 J, what is the length in space of each pulse? What is the average energy per unit volume (the energy density) in one of these pulses?
October 16, 2014 by Ashton

physics
A laser that emits pulses of UV lasting 2.95 ns has a beam diameter of 4.05 mm. If each burst contains an energy of 4.60 J, what is the length in space of each pulse? What is the average energy per unit volume (the energy density) in one of these pulses?
October 17, 2014 by Ashton

physics
How far would you have to drill into the Earth, to reach a point where your weight is reduced by 8.0 ? Approximate the Earth as a uniform sphere.
April 15, 2010 by Adam

Physics
How far would you have to drill into the Earth, to reach a point where your weight is reduced by 8.0 ? Approximate the Earth as a uniform sphere.
September 24, 2010 by John

Physics
Biomedical measurements show that the arms and hands together typically make up 13.0% of a person's mass, while the legs and feet together account for 37.0% . For a rough (but reasonable) calculation, we can model the arms and legs as thin uniform bars pivoting about the ...
February 23, 2012 by john

Chemistry
Which method increases the surface of a solid, allowing it to dissolve faster? A)changing the state of the solid B)adding gas to the solid C)heating the solid D)reducing the size of the solid ****Please help!!!!******* I think the answer is C but i am not completely sure. If ...
January 11, 2011 by AHS

physics
The galaxies in the universe are all flying away from each other. The speeds of nearby galaxies are proportional to the distance the galaxy is away from us. This relation, v=Hd is known as Hubble's law and the constant H is known as Hubble's constant. The evolution of our ...
May 23, 2013 by hrdcvrdcv

Statistic
Examining the location of accidents on a level, 3-mile bike path shows that they occur uniformly along the length of the path. This figure Uniform density curve. displays the density curve that describes the distribution of accidents.
October 3, 2014 by Anonymous

maths
a sphere wall is 20mm thick, inside diameter is 10M. What is the mass of steel if the density is 7850Kgm3?
January 31, 2013 by Anonymous

Science
1) Instead of using the word "random",is it acceptable to say particles in a liquid move about in "different" directions? 2) Why does ice have a higher density than water vapour? Is it because ice has a greater mass in a fixed volume? 3) The statement "Particles in a gas are ...
January 26, 2009 by anne

Physics
the dimensions of torque are the same as those of energy. Why it would nevertheless be inappropriate to measure torque in joules. Energy is force x distance, where distance is the distance in the direction of force. Torque is force x distance perpenduclar to force. Joules is a...
February 26, 2007 by Ishani

Physics
A sphere with a moment of inertia 0.465mr2 and mass m and radius r rolls without slipping along an inclined track that is followed by a circular loop (like a roller coaster) of radius R. This happens on a planet where the acceleration due to gravity is g.  It starts from rest...
October 26, 2012 by Alphonse

mathyematics
a diagram of the net of each of the following solid cube, cuboid, cylinder,cone, prism, pyramid and sphere. See response to your second post.
May 25, 2007 by jason

physics
Would someone check my thinking please. A solid sphere (mass, r, and moment of inertia given) is rotating at a given angular speed. Friction is constantly applied at the 'equator' of the sphere, and brings it to rest in 3s. Find the force. I worked out the torque, and then ...
June 15, 2009 by charlie

Physics help please!!!
Biomedical measurements show that the arms and hands together typically make up 13.0% of a person's mass, while the legs and feet together account for 37.0% . For a rough (but reasonable) calculation, we can model the arms and legs as thin uniform bars pivoting about the ...
February 23, 2012 by john

Physics
A merry-go-round in the park has a radius of 1.8 m and a rotational inertia of 900 kgm^2. A child pushes the merry-go-round with a constant force of 80 N applied at the edge and parallel to the edge. A frictional torque of 12 Nm acts at the axle of the merry-go-round. a. What ...
January 20, 2010 by Bell

physics
Suppose a spherical planet P has a uniform density of 4.96*10^3 kg/m^3 and a radius R=1904 km. For a parcel that weighs 73 N on the surface of the (spherical) earth, what is A) gp/ge and B) its weight on the surface of P? Using the "tunnel mail" system what is C) the delivery ...
April 11, 2011 by Mudoh

Physics-help please!
A net torque of 54 N.m is applied to a disk with a rotational inertia of 13.2 kg.m2 What is the rotational acceleration of the disk?
July 8, 2014 by Anonymous

chemistry
at 25˚c the density of water is 0.997g/cm,the density of ice at -10˚c is 0.917g/cm. if a soda can volume is 240 ml is filled then frozen at -10˚c, what volume does solid occupy?
February 1, 2011 by tom

physics
A solid ball with a mass m=0.53kg floats in a tank of water.The ball is made of material with a density of 400kg/m^3.The density of water is 1000kg/m^3.what fraction of the ball is below waterline?
March 25, 2015 by eunice

PHYSICS
A solid ball with a mass m = 0.53 kg floats in a tank of water. The ball is made of material with a density of 400 kg/m3 . The density of water is 1000 kg/m3 . What fraction of the volume of the ball is below the waterline?
April 3, 2015 by MONSOFT

physics
A solid ball with a mass m = 0.53 kg floats in a tank of water. The ball is made of material with a density of 400 . The density of water is 1000 . What fraction of the volume of the ball is below the waterline?
April 28, 2015 by Anonymous

Algebra II
12. A sphere has a radius of 4x + 1. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula S = 4 r2 for the surface area of a sphere. (1 point) 64 x2 + 32 x + 4 64 x2 + 16 x + 4 *my answer 4 x2 + 32 x + 64 4 x2 + 4
October 6, 2014 by Sandra

Physical Education
A solid object floats on ethyl alcohol, with 68.2%of the objects volume submerged .Find the density of the object. Take density of alcohol =806 kg/m
May 13, 2013 by Janaiby

algebra--1 question
A sphere has a radius of 4x + 1. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula S = 4(pi)r^2 for the surface area of a sphere. 16(pi)x^2 + 16(pi) 16(pi)x^2 + 48(pi)x + 16(pi) 36(pi)x^2 + 48(pi)x + 16(pi) 36(pi)x^2 + 24(pi...
March 24, 2015 by SkatingDJ

Physics
A sexond smaller metal sphere was positioned near the van de Graff machine. THe sphere was grounded. Did this snaller sphere become charged? How and why? was the interaction between the two spheres attractive or repulsive? Explain. Yes the smaller sphere was charged because ...
April 2, 2008 by Andrea

geometry
Here is an equation for a sphere: (x-18)^2+(y-5)^2+(z+11)^2=36 give the coordinates of two points on the sphere. I know how to find coordinates on a circle using the equation (x-h)^2+(y-k)^2=r^2 but I can't figure out how t do it with a sphere.
March 29, 2012 by SoccerStar

Algebra
A sphere has a radius of 4x + 1. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula S = 4(pi)r2 for the surface area of a sphere.
March 7, 2014 by Sandra

Physics
An green hoop with mass mh = 2.4 kg and radius Rh = 0.14 m hangs from a string that goes over a blue solid disk pulley with mass md = 2.2 kg and radius Rd = 0.1 m. The other end of the string is attached to a massless axel through the center of an orange sphere on a flat ...
November 10, 2014 by stewart

Physics
A solid rectangular block measure 0.100*0.080m*0.060m and floats freely in a liquid of density 1354kg/m^2 if the depth of liquid 0.04m up the block largest side. Find the density of the block.
February 26, 2012 by Igbekele

science
1. A convex mirror with a focal length of -20cm forms an image 15cm behind the surface. If the object height is 1.2cm what is the image height? 3. A solid glass sphere with a radius of 5cm and index of refraction of 1.52 has a small coin embedded 3cm from the front surface of ...
July 26, 2011 by Anonymous

Physics Please help!
In each of the following cases, the mass is 7.99 kg and the radius is 7.50 cm. (a) What is the moment of inertia (kg/m2 ) of a solid cylinder rotating about an axis parallel to the symmetry axis but passing through the edge of the cylinder? (b) What is the moment of inertia (...
March 17, 2012 by john

Physics Rotaional Kinetic Energy
A car is designed to get its energy from a rotating flywheel with a radius of 1.50 m and a mass of 600 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 4000 rev/min. (a) Find the kinetic energy stored in the ...
March 17, 2010 by Anonymous

physics
A hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. The sphere has a volume of 0.600m^3 and the tension in the cord is 840N . What is the mass of the sphere? is this how i would find the mass? (4/3)X3.14X(.600)^3...
February 15, 2009 by Amanda

Physics
A solid sphere, a hoop, and a solid disk. all with equal masses and radii, roll at the same translational speed along a horizontal surface toward a ramp inclined at a 30 degree angle. Which of the three will make it furthest up the ramp before it stops and begins to roll back ...
March 18, 2015 by Joe

Math
Name the solid according to its description: The figure has two bases that are parallel congruent circle. A. Cylinder B. Rectangular prism C. Sphere D. Cone Is the answer A? Thank you
February 3, 2015 by Callie

algebera
1) Identify the solid form by the given net. :Triangular Prism :Triangular Pyramid*** :Cone :Triangle 2) Name the solid according to it's description: The figure has two bases that are parallel congruent circles. :Cylinder*** :Rectangular Prism :Sphere :Cone 3) Identify the ...
February 10, 2015 by 3-D Figure and Nets

Chemistry
The freezing point of mercury is -38.8C, is the only metal that is liquid at room temperature. What quantity of heat energy, in joules, must be released by mercury if 2.00 mL of mercury is cooled from 23.0C to -38.8C and then frozen to a solid? (The density of liquid ...
April 22, 2011 by Lindy

Chemistry
The freezing point of mercury is -38.8C, is the only metal that is liquid at room temperature. What quantity of heat energy, in joules, must be released by mercury if 2.00 mL of mercury is cooled from 23.0C to -38.8C and then frozen to a solid? (The density of liquid ...
April 23, 2011 by Lindy

chemistry
The freezing point of mercury is -38.8C, is the only metal that is liquid at room temperature. What quantity of heat energy, in joules, must be released by mercury if 2.00 mL of mercury is cooled from 23.0C to -38.8C and then frozen to a solid? (The density of liquid ...
April 23, 2011 by Lindy

physics
two uniform cylinders have different masses and different rotational inertias.they simultaneously start from rest at top of an inclined plane and rool without sliding down the plane.the cylinder that gets to the bottom first is?
May 25, 2012 by owen

chemistry
to find the molarity of an aqueous solution of an ionic solid what do you need to know? a... mass of solid, formula of solid, volume of water b...moles of solid, formula of solid, volume of water c....mass of solid, formula of solid, volume of solution d....moles of solid, ...
November 30, 2010 by Anna

Physic II -----UD
A metal sphere is insulated electrically and is given a charge. If 50 electrons are added to the sphere in giving a charge, how many Coulombs are added to the sphere?
January 25, 2014 by Saziye

Calculus
4. At time t, t>0, the volume of a sphere is increasing at a rate proportional to the reciprocal of its radius. At t = 0, the radius of the sphere is 1 and at t = 15 the radius is 2. a. Find the radius of the sphere as a function of t. b. At what time t will the volume of ...
February 14, 2012 by Anonymous

Surface Area
[Given] Fiber Linear Density = 1 denier = 1 g/9000m Fiber Density = 1.14 g/cm^3 [Find..] Fiber surface area in cm^2/g Assume that the fiber strand is a uniform cylinder [Answer] Surface area = 3,150 cm^2/g ....... how do i get to the answer? my professor gives us these notes: ...
September 14, 2007 by COFFEE

Science ASAP please
1. Which of the following is an example of density? (1 point) ice floating on top of a river convection currents that cause wind oil spill cleanup all of the above 2. What type of property is density? (1 point) chemical property size-independent physical property all of the ...
April 9, 2013 by Delilah

Physics
The moment of inertia of an object depends on the shape of the object, location and orientation of the axis of rotation. For a solid disk, when the disk is rotating about an axis that is perpendicular to the disk and passing through the center of the disk, the moment of ...
October 29, 2009 by Ellie

physics, help!!
A metallic sphere initially has a net charge of +4.0 nC. A negatively-charged rod initially has a net charge of 6.0 nC. When the rod touches the sphere 8.2 x109 electrons are transferred to the sphere. What is the new net charge on the sphere?
November 9, 2012 by Ella

physics
A 0.67-kg metal sphere oscillates at the end of a vertical spring. As the spring stretches from 0.10 to 0.21 m (relative to its unstrained length), the speed of the sphere decreases from 5.35 to 4.55 m/s. What is the spring constant of the spring? (The sphere hangs from the ...
December 5, 2013 by Donna

physics
A 0.67-kg metal sphere oscillates at the end of a vertical spring. As the spring stretches from 0.10 to 0.21 m (relative to its unstrained length), the speed of the sphere decreases from 5.35 to 4.55 m/s. What is the spring constant of the spring? (The sphere hangs from the ...
December 9, 2013 by Donna

calculus
Find the volume that remains after a hole of radius 1 is bored through the center of a solid sphere of radius 2.
December 8, 2011 by Jane

math
what solid shape matches a funnel? Also which shape is the same no matter how you look at it, from any angle or direction? Is this a sphere?
April 17, 2012 by joei

Physics
A 0.56-kg metal sphere oscillates at the end of a vertical spring. As the spring stretches from 0.13 to 0.26 m (relative to its unstrained length), the speed of the sphere decreases from 5.45 to 4.90 m/s. What is the spring constant of the spring? (The sphere hangs from the ...
November 30, 2012 by Elizabeth

Physics. Need urgent help.
A scuba diver searches for treasure at a depth of 20.0m below the surface of the sea. at what pressure must the scuba device deliver air to the diver? (density of sea water= 1030kg/m^3;atmospheric pressure= 1.013x10^5 pa) another one A king's crown is said to be solid gold but...
May 6, 2012 by Dan

PHYSICS(HELP!!)
A hole is drilled with smooth sides straight through the center of the earth to the other side of the earth. The air is removed from this tube (and the tube doesn't fill up with water, liquid rock or iron from the core). An object is dropped into one end of the tube and just ...
October 18, 2013 by Anonymous

PLEASE HELP!! PHYSICS
A 0.63-kg metal sphere oscillates at the end of a vertical spring. As the spring stretches from 0.13 to 0.22 m (relative to its unstrained length), the speed of the sphere decreases from 5.95 to 4.75 m/s. What is the spring constant of the spring? (The sphere hangs from the ...
December 1, 2012 by Elizabeth

PHYSICS
Three small spheres are placed at fixed points along the x-axis, whose positive direction points towards the right. Sphere A is at x = 23.0 cm, with a charge of -10.00 microCoulomb Sphere B is at x = 55.0 cm, with a charge of 2.00 microCoulomb Sphere C is at x = 57.0 cm, with ...
May 4, 2010 by Jay

Chemistry
A. Ionic solid B. Molecular solid C. Covalent solid D. Graphic solid Which of this solids is soluble in water, conductive in solution, brittle and could have a melting point of 2800 C. I think the answer is A.
December 16, 2014 by Morgan

math
The radius of a sphere immersed in an infinite ocean of incompressible fluid with density according to the equation, R(t) = A + a cos(nt), where R(t) is a function of time, t, and A, constants, with a being positive. The fluid moves radially under no external forces and ...
October 12, 2011 by paul gokool

science
A sphere of radius 4 cm iss carved from a homogenous sphere of radius 8cm and mass 160g. the mass of the smaller sphere is
September 24, 2012 by navneet

physics
A sphere of radius r and mass m has a linear velocity v0 directed to the left and no angular velocity as it is placed on a belt moving to the right with a constant velocity v1. If after sliding on the belt the sphere is to have no linear velocity relatives to the ground as it ...
March 31, 2010 by pramod

Chemistry
how many radicals are in CuSO4? What occurs to CuSO4 particles in terms of temperature,energy and particles Arrangment as they move from matter to solid? What is the proccess called? (moving from liquid to solid)
May 14, 2011 by Rose

physics (PLS HELP)
A hole is drilled with smooth sides straight through the center of the earth to the other side of the earth. The air is removed from this tube (and the tube doesn't fill up with water, liquid rock or iron from the core). An object is dropped into one end of the tube and just ...
October 18, 2013 by Anonymous

physics help (elena)
A hole is drilled with smooth sides straight through the center of the earth to the other side of the earth. The air is removed from this tube (and the tube doesn't fill up with water, liquid rock or iron from the core). An object is dropped into one end of the tube and just ...
October 18, 2013 by Anonymous

physics
Hurricanes can involve winds in excess of 120 km/h at the outer edge. Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg/m^3) of radius 120 km and height 4.5 km. Make a crude estimate of the ...
October 25, 2010 by Mark

physics
Hurricanes can involve winds in excess of 120 km/h at the outer edge. Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg/m^3) of radius 120 km and height 4.5 km. Make a crude estimate of the ...
October 26, 2010 by kim

Physics Help!!
Hurricanes can involve winds in excess of 120 km/h at the outer edge. Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg*m^3 of radius 120 km and height 4.5 km. Make a crude estimate of the ...
October 26, 2010 by tiffany

physics
Hurricanes can involve winds in excess of 120 km/h at the outer edge. Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg*m^3 of radius 120 km and height 4.5 km. Make a crude estimate of the ...
October 26, 2010 by Marisol

physics
Hurricanes can involve winds in excess of 120 km/h at the outer edge. Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg*m^3 of radius 120 km and height 4.5 km. Make a crude estimate of the ...
October 27, 2010 by Mary

PHYSICS ---HELP!
Hurricanes can involve winds in excess of 120 km/h at the outer edge. Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg*m^3 of radius 120 km and height 4.5 km. Make a crude estimate of the ...
October 27, 2010 by Mary

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