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March 26, 2015

Search: If the linear speed of the disk is 1.35 m/s, find the translational kinetic energy, rotational kinetic energy, and the total kinetic energy of the rolling hoop.

Number of results: 105,371

science
what are 3 changes light energy can cause
September 29, 2008 by faejin

science
What is the Pro's and Con's of energy
October 2, 2008 by dani

Chemistry
what is the big idea of energy
November 8, 2008 by Chinchilla

science
what are 3 sources of heat energy
November 17, 2008 by shaeny

chemistry
what is the big idea of energy?
November 29, 2008 by john

6th grade
How is energy transported????
December 15, 2008 by Anonymous

7th grade
how do you know when something has energy?
April 15, 2009 by hanna

Science
What is an energy production pyramid??
September 9, 2009 by Elizabeth

5th grade
What is the definition of energy???
October 4, 2009 by Anonymous

science
How does a sunflower's energy get transferred?
January 4, 2010 by Lacey

science
where does activation energy come from
January 13, 2010 by dee

physics
what are nonrenewable energy sources?
February 11, 2010 by Natalia

science
how will ocean energy be used
February 22, 2010 by Anonymous

Science
Where does the energy go when you melt chocolate?
March 14, 2010 by Robert

science
what is the flow of matter and energy??
April 17, 2010 by suzzy

physics
As wavelength decreases, energy ?
July 31, 2010 by Cristina

chemistry
Properties of light energy
December 30, 2010 by Evans

modern physics
What is the energy equivalent of 2 e V?
April 28, 2011 by ashley --

science
HOW DOES ENERGY TRANSFER HAPPEN
November 15, 2011 by LINDSEY

science
HOW DOES ENERGY TRANSFER HAPPEN
November 15, 2011 by LINDSEY

science
HOW DOES ENERGY TRANSFER HAPPEN
November 15, 2011 by LINDSEY

physics
How does tidal energy work
February 15, 2012 by sathwika

physics
how do you solve for Potential Energy?
May 10, 2012 by dan

Physic
What is the source of the sun's energy?
August 7, 2012 by David

science
where does the earth loose energy to ??
October 17, 2012 by destiny

physics
The SI unit of energy can be expresses as what?
December 4, 2012 by elaine

heat energy
help me convert 0.093cal/gc to j/kg/k
March 20, 2013 by sophie

Physics
A 2.0kg wood block is launched up a wooden ramp that is inclined at a 26 angle. The block's initial speed is 8.0 m/s. The coefficient of kinetic friction of wood on wood is 0.200. a) What vertical height does the block reach above its starting point? Express your answer to two...
October 10, 2012 by senko

Physics
I am stuck on this question and not really sure what to do for it. I think that i can use this equation Q/dt=e*sigma*A*T^4 for it, but i'm not getting the right answer for it. Is this not the right equation? Question: Electronics and inhabitants of the International Space ...
April 5, 2011 by Eliz

physics
You drop a ball from a height of 1.9m , and it bounces back to a height of 1.3m . a)What fraction of its initial energy is lost during the bounce? b)What is the ball's speed just before the bounce?
October 11, 2012 by Andrew

Physics
a) The coefficient of kinetic friction between a steel block and an ice rink surface is 0.0100. If a force of 24.5 N keeps the steel block moving at a steady speed, what is the force of gravity on the block? b)A copper block has dimensions 1 cm 2 cm 4 cm. A force of 0.10 N...
September 29, 2012 by Hanu

College Physics
1. A spring gun is made by compressing a spring ina tube and then altching the spring at the compressed position. A 4.97-g pellet is placed against the compressed and latched spring. The spring latches at a compression of 4.06 cm, and it takes a force of 9.12 N to compress the...
June 29, 2011 by Jane

Physics
A cannon fires a shell at an angle of 55.0 above the horizontal. The shell has a mass of 17.5kg, and its initial speed as it leaves the cannon is 289m/s. The cannon is not anchored to the ground. It is mounted on a base -a large block of wood- which is sittin go n a level ...
November 2, 2009 by John

physics
You push a box along the floor against a constant force of friction. When you push with a horizontal force of 75 N the acceleration of the box is 0.55 m/s2; when you increase the force to 85 N the acceleration is 0.78 m/s2. (a) Find the mass of the box. kg (b) Find the ...
February 13, 2010 by janie

Physics
You push a box along the floor against a constant force of friction. When you push with a horizontal force of 72 N the acceleration of the box is 0.43 m/s2; when you increase the force to 77 N the acceleration is 0.58 m/s2. (a) Find the mass of the box. (b) Find the ...
February 15, 2010 by Bobby C

Physics
You push a box along the floor against a constant force of friction. When you push with a horizontal force of 78 N the acceleration of the box is 0.46 m/s2; when you increase the force to 86 N the acceleration is 0.76 m/s2. (a) Find the mass of the box. (b) Find the ...
February 12, 2012 by Anna

Physics
A 5 kg block is being pulled to the right with a 20 N force. This causes the block to slide along the table with an acceleration of 2 m/s2. What is the coefficient of kinetic friction between the block and table?
February 21, 2011 by Paige

Physics
When a horizontal force of 350 is applied to a 86.0 box, the box slides on a level floor, opposed by a force of kinetic friction of 130 .What is the magnitude of the acceleration of the box?
May 25, 2011 by EL

Physics
A 4 kg block slides down a rough inclined plane inclined at 30 with the horizontal. Determine the coefficient of kinetic friction between the block and the surface if the block has an acceleration of 1.2 m/s2.
September 30, 2012 by La La

Physics
A 4 kg block slides down a rough inclined plane inclined at 30 with the horizontal. Determine the coefficient of kinetic friction between the block and the surface if the block has an acceleration of 1.2 m/s2.
October 6, 2012 by La La

physics
A toboggan slides down a hill and has a constant velocity. The angle of the hill is 6.50 with respect to the horizontal. What is the coefficient of kinetic friction between the surface of the hill and the toboggan?
June 30, 2013 by francis

physics
A toboggan slides down a hill and has a constant velocity. The angle of the hill is 6.70 with respect to the horizontal. What is the coefficient of kinetic friction between the surface of the hill and the toboggan?
September 23, 2014 by chidera

Physics
A solid ball and a hollow ball, each with a mass of 2 kg and radius of 0.1 m, start from rest and roll down a ramp of length 2 m at an incline of 34. An ice cube of the same mass slides without friction down the same ramp. What is the speed of the solid ball at the bottom of ...
June 18, 2012 by James

Science check
I was wondering if someone could check the problems for me? Thanks I can go back and show work if needed..this was just easier to type out. 1)An object has a mass of 615 grams and a volume of 105cm3.What is the density of the object? answer 5.86 gm/cm3 2) A player uses a ...
May 29, 2007 by Anonymous

Fossil Fuels
If we ran out of fossil fuels which could replace them. Hydroelectric Wind Solar GeoThermal No single one of these resouces, at their current levels, could totally replace out energy consumption. Hydroelectric yeah but which could almost do it None of these. To even come close...
November 15, 2006 by Jenny

physics
A 1,040-N crate is being pushed across a level floor at a constant speed by a force of 350 N at an angle of 20.0 below the horizontal; (a) What is the coefficient of kinetic friction between the crate and the floor? (b) If the 350-N force is instead pulling the block at an ...
March 15, 2012 by kevin

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

Chemistry
Find the molar enthalpy of vaporization for a substance, given that 3.21 mol of the subtance absorbs 28.4 kJ of energy as heat when the substance changes from a liquid to a gas.
February 13, 2008 by Analise

chemistry
Find the molar heat of vaporization for a substance, if 3.28mol of the substance absorbs 24.8 kJ of energy when it changes from a liquid to a gas. Answer in units of kJ/mol
March 1, 2012 by nelson

Physics
(a) Find the capacitance of a parallel-plate capacitor made of two 5 cm5 cm square plates separated by 1 mm. (b) If 50 V is applied to this capacitor, how much energy is stored?
September 4, 2012 by Amanda

Precalculus
Can someone check my answers please? Thank you :) 30. What is Earth's rotational speed at (a) Bangor, Maine (latitude 45 degrees N) and (b) Rio de Janeiro, Brazil (latitude 23 degrees S)? (It's given in the problem also that Earth's rotational speed at the equator is about 1,...
January 13, 2010 by Emily

Systems Physiology
One morning you are lying in a meadow under the blue summer sky of Connecticut. You notice a small bird (likely a song sparrow but unfortunately you have forgotten your binoculars so you just assume) perched on a branch in the shade of an old oak tree. You also notice another ...
March 22, 2007 by mike

Science
1) Why do scientists use models?(1point) Scientists use models to learn about things that are too small, too large, or to complex to observe directly. Scientists use models because doing so is always part of the scientific method. Scientists use models because they work ...
September 19, 2013 by Gabby

Chemistry
Assuming the dissolution of borax in water is a spontaneous reaction, do you expect the change in enthalpy to be positive or negative or are both signs possible? Explain your answer A. Neither, enthalpy does not change, the positive entropy for the dissolution, leads to G(G=...
May 7, 2007 by Linda

College Physics
In Chapter 3 we learned that the force of air drag on an object moving rapidly through the air is proportional to v2, where v is the speed of the ball relative to the air. The same relation applies to the force of the wind on the blades of a wind turbine (Figure 9.4), where v ...
October 18, 2011 by Anon

physics
If I push a 10kg box with 50.0N of force forward and the box has a coefficient of kinetic friction of .25 what is the forward acceleration of the box?
November 29, 2009 by april

physics
In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The solar radiation enters the collector through a transparent cover and warms the water in the tubes; this water is pumped into a holding tank. Assume that ...
April 14, 2011 by monique

physics
In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The solar radiation enters the collector through a transparent cover and warms the water in the tubes; this water is pumped into a holding tank. Assume that ...
April 15, 2011 by niki

physics
In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The solar radiation enters the collector through a transparent cover and warms the water in the tubes; this water is pumped into a holding tank. Assume that ...
April 1, 2013 by Ashley

Phyics
In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The solar radiation enters the collector through a transparent cover and warms the water in the tubes; this water is pumped into a holding tank. Assume that ...
April 12, 2013 by HELP PLEASE

College physics (simple)
Two blocks (one on top of the other), each of mass m = 2.4 kg, are pushed along the horizontal surface of a table by a horizontal force P of magnitude 6.8 N, directed to the right. The blocks move together to the right at constant velocity. (a) Find the frictional force ...
September 27, 2011 by Kellie

College physics (simple)
Two blocks (one on top of the other), each of mass m = 2.4 kg, are pushed along the horizontal surface of a table by a horizontal force P of magnitude 6.8 N, directed to the right. The blocks move together to the right at constant velocity. (a) Find the frictional force ...
September 27, 2011 by Kellie

Biomechanics
If John was pushing a 300 kg desk across the floor with a constant acceleration of 3.5 m/s squared, how much force would he have to apply to the desk to maintain the acceleration, considering the coefficient of kinetic friction is 0.60?
February 17, 2011 by Jennifer

physics
A 75g person on skis is going down a hill sloped at an angle 30.the coefficient of kinetic friction between the skis and the snow is 0.15.how fast is the skier going 10s after starting from rest?
November 6, 2011 by Anonymous

physics
How much power must you exert to horizontally drag a 21.0kg table 15.0m across a brick floor in 20.0s at constant velocity, assuming the coefficient of kinetic friction between the table and floor is 0.500?
October 24, 2013 by HELP

physics
How much power must you exert to horizontally drag a 21.0kg table 15.0m across a brick floor in 20.0s at constant velocity, assuming the coefficient of kinetic friction between the table and floor is 0.500?
October 24, 2013 by becca

Physics
Use the exact values you enter in previous answer(s) to make later calculation(s). Energy-efficient windows are constructed with two panes of glass separated by an air gap (see figure below). In a typical window of this type, the air gap makes a huge difference in the rate of ...
July 31, 2012 by Sierra

Physics
An ideal monatomic gas expands isothermally from 0.590 m3 to 1.25 m3 at a constant temperature of 670 K. If the initial pressure is 8.00 104 Pa. (a) Find the work done on the gas. Answer is in J (b) Find the thermal energy transfer Q. Answer is in J
December 2, 2011 by Allie

Physics urgent
A rubber puck, initially travelling at 39 km/h, is sliding along an icy surface. How long (in seconds) would it take the puck to come to a complete stop if the coefficient of kinetic friction between the puck and the ice is 0.2?
October 8, 2009 by moe

Chem/Physics
Hi! I'm having lots of trouble figuring these two out.....if you could help that would be great- thanks!! 1. The half-life for the (first-order) radioactive decay of 14C is 5730 yr (it emits a β ray with an energy of 0.16 MeV). An archaeological sample contained wood that...
October 15, 2008 by Anne

Science
Harvesting energy from water, wind, and geothermal vents requires the use of (1 point) aquaculture engines*** mines turbines Which of the following is not among the advantages of generating nuclear energy? (1 point) It does not release carbon dioxide into the atmosphere. It ...
February 11, 2014 by Gabby

Science~!
Harvesting energy from water, wind, and geothermal vents requires the use of (1 point) aquaculture engines*** mines turbines Which of the following is not among the advantages of generating nuclear energy? (1 point) It does not release carbon dioxide into the atmosphere. It ...
February 11, 2014 by Gabby

Physics
A system undergoes a two-step process. In the first step, the internal energy of the system increases by 368 J when 144 J of work is done on the system. In the second step, the internal energy of the system increases by 24 J when 248 J of work is done on the system. (a) For ...
April 27, 2008 by Sally

physics
A ball of mass m = 0.75 kg is thrown straight upward with an initial speed of 8.9 m/s. Plot the gravitational potential energy of the block from its launch height, y = 0, to the height y = 5.0 m. Let U = 0 correspond to y = 0. Determine the turning point (maximum height) of ...
February 13, 2011 by Bob

physics
A ball of mass m = 0.75 kg is thrown straight upward with an initial speed of 8.9 m/s. Plot the gravitational potential energy of the block from its launch height, y = 0, to the height y = 5.0 m. Let U = 0 correspond to y = 0. Determine the turning point (maximum height) of ...
February 13, 2011 by Bob

Physics
A block is pushed across a horizontal surface with a coefficient of kinetic friction of 0.15 by applying a 150 N horizontal force. If the block accelerates at the rate of 2.53 m/s2 (squared), what is the mass of the block?
October 24, 2011 by Chris

Science
What force do you need to push on a large crate to accelerate it at 1.8m/s2 across a rough floor? The crate has mass 32kg and the coefficient of kinetic friction between the crate and floor is 0.57
November 20, 2014 by Becky

chemistry
Can someone please tell me the tools needed to measure amount of substance, area, volume, density, energy, and pressure? Thanks in advance! It depends on what you are measuring and the quantity. For amount of substance, the mass can be measured with a balanace for relatively ...
September 27, 2006 by Boromir

Technology
is there anything i should add to my answer: 1. There are seven inputs common to all technological systems. List these inputs and give an example of each one. There are seven inputs common to all technological systems. These include people, materials, tools (machines), energy...
October 24, 2009 by y912

Maths and Physics
A particle P of mass m=1 moves on the x-axis under the force field F=36/(x^3) - 9/(x^2) (x>0). Show that each motion of P consists of either (i) a periodic oscillation between two extreme points, or (ii) an unbounded motion with one extreme point, depending on the value of ...
April 25, 2011 by AKUMA

Maths/physics
A particle P of mass m=1 moves on the x-axis under the force field F=36/(x^3) - 9/(x^2) (x>0). Show that each motion of P consists of either (i) a periodic oscillation between two extreme points, or (ii) an unbounded motion with one extreme point, depending on the value of ...
April 25, 2011 by Hugo

Physics
Problem 3- Blocks A, B, and C are connected by ropes and placed as in the figure. Both A and B weigh 22.6 N each, and the coefficient of kinetic friction between each block and the surface is 0.40. Block C descends with constant velocity. a) Draw free-body diagram of objects A...
November 18, 2013 by Maryam

Physics
"A rocket with mass 1200kg reaches a speed of 300m/s when an explosion breaks it up into two parts with equal mass, and their speeds have a 25m/s difference. What are the speeds and how much energy is released?" Show all work. Thanks!
February 3, 2008 by Michael

friction
A 40 kg slab rests on a friction less floor.a 10 kg block rests on top of the slab.the coefficient kinetic friction between the block and the slab is 0.40.a horizontal force of 100N is applied on the 10 kg block.find the resulting acceleration of the slab.
September 28, 2014 by mahesh

Physics
Someone please help me! I've been stuck on this problem for a while now and i can't figure it out! A disk with mass m = 5.2 kg and radius R = 0.44 m hangs from a rope attached to the ceiling. The disk spins on its axis at a distance r = 1.59 m from the rope and at a frequency ...
December 5, 2014 by stewart

Physics
You drop a ball from a height of 2.0 m and it bounces back to a height of 1.5 m (a) What fraction of its initial energy is lost during the bounce? (b) What is the balls speed just at it leaves the ground after the bounce?
August 15, 2010 by Sasha

physics
You drop a ball from a height of 2.0 m and it bounces back to a height of 1.5 m (a) What fraction of its initial energy is lost during the bounce? (b) What is the balls speed just at it leaves the ground after the bounce?
August 19, 2010 by jen

physics
A 65 kg water skier is pulled up a 15 inclined by a role parallel to the incline with a tension of 500N. The coefficient of kinetic friction is .25. What are the magnitude and direction of the skier's acceleration? I found the weight its 637.65 I found it by multiplying the ...
November 9, 2014 by Lilie

college physics
A 55-kg woman cheats on her diet and eats a 465-Calorie (465 kcal) jelly doughnut for breakfast. (c) If the human body is only 24% efficient in converting chemical energy to mechanical energy, how many stairs must the woman climb to work off her breakfast? I got 24075.32468 ...
December 3, 2012 by cat

Physics
In moving a 35.0 kg desk from one side of a classroom to the other, a professor finds that a horizontal force of 300 N is necessary to set the desk in motion, and a force of 185 N is necessary to keep it in motion at a constant speed. (a) What is the coefficient of static ...
September 20, 2010 by George

physics
Part B Piles of snow on slippery roofs can become dangerous projectiles as they melt. Consider a chunk of snow at the ridge of a roof with a pitch of 21. As the snow begins to melt, the coefficient of static friction decreases and the snow eventually slips. Assuming that the ...
October 15, 2010 by Anne

Physics
A disk in your computer spins at 5400 rpm. If this disk turns through 12 revolutions before coming to stop, find the disks angular velocity acceleration. Also find the time it takes to stop.
June 12, 2013 by Kayla

Physics
A 1500 kg car moves along a horizontal road at speed v0 = 21.9 m/s. The road is wet, so the static friction coefficient between the tires and the road is only s = 0.302 and the kinetic friction coefficient is even lower, k = 0.2114. The acceleration of gravity is 9...
September 29, 2012 by Cody

Physics
When you push a 1.82-kg book resting on a tabletop, it takes 2.30 N to start the book sliding. Once it is sliding, however, it takes only 1.46 N to keep the book moving with constant speed. Q1. What is the coefficient of static friction between the book and the tabletop? Q2. ...
March 7, 2011 by Randy

phy
When you push a 1.82-{\rm kg} book resting on a tabletop, it takes 2.21 N to start the book sliding. Once it is sliding, however, it takes only 1.52 N to keep the book moving with constant speed. 1-What is the coefficient of static friction between the book and the tabletop? 2...
July 18, 2011 by pop

Chemistry
Questions with what I think correct: -Has the largest anion.D -Is the most electronegative.A -Has the highest bonding energy in its diatomic molecule.B -Is a liquid at room temperature in tis free state.C Chooses: A. Fluoride B. Chloride C. Bromide D. Iodine Please can ...
April 21, 2007 by Ryan

physics hw need help
A disk with a radial line painted on it is mounted on an axle perpendicular to it and running through its center. It is initially at rest, with the line at q0 = -90. The disk then undergoes constant angular acceleration. After accelerating for 3.1 s, the reference line has ...
July 14, 2010 by Jay

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

physics
You are hired as ballistics expert and need to measure the muzzle speed of the bullet (with a mass, m = 20 g) for the gun. You fire a ballistic gun horizontally into a 2-kg ballistic pendulum (M = 2 kg) hanging at rest on a massless rod. After the bullet hits it and becomes ...
February 23, 2011 by Anonymous

physics
A 1100 N crate is being pushed across a level floor at a constant speed by a force of 500 N at an angle of 20.0 below the horizontal. (a) What is the coefficient of kinetic friction between the crate and the floor? (b) If the 500 N force is instead pulling the block at an ...
October 20, 2010 by laven

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