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February 28, 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: 104,287

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

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

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
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

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
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 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 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

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

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

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

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
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

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
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
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

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
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

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
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

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
A truck of 5000kg hits a car of 1500kg at an intersection. After the collision, both vehicles remained glued together and slid over a distance of 30 meters before coming to a halt. Knowing that the coefficient of kinetic friction between both vehicles and the street is 0.700, ...
February 4, 2012 by Raf

physics
A truck of 5000kg hits a car of 1500kg at an intersection. After the collision, both vehicles remained glued together and slid over a distance of 30 meters before coming to a halt. Knowing that the coefficient of kinetic friction between both vehicles and the street is 0.700, ...
February 5, 2012 by Raf

Physics
An airliner makes an emergency landing with its nose wheel locked in a position perpendicular to its normal rolling position. The forces acting to stop the airliner arise from friction due to the wheels and from the breaking effort of the engines in reverse thrust mode. The ...
November 2, 2013 by Phy

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

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
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 push a large 32 kg crate across the floor with a force F=330 N at an angle of 21 degrees below the horizontal. If the coefficient of kinetic friction between the crate and the floor is 0.45, what is the acceleration of the crate?
September 21, 2010 by Ka

Physics
A box weighing 600 N is pushed along a horizontal floor at a constant velocity with a force of 250 N parallel to the floor. What is the coefficient of Kinetic friction between the box and the floor?
October 13, 2010 by Kelsey

physics
What does it mean to say the Coulomb Force is a conservative force? This is what I have compiled, but I still feel like I'm missing something. A conservative force is one in which energy cannot be created nor destroyed, and with the property that the work done in moving a ...
July 23, 2012 by Coty

high school physics
Annie rides her snowboard down a hill sloped at 25 degrees. The coefficient of kinetic friction between her and her skies is .15. If her mass is 55 kg, hw fast is she excelerating? Assuming she starts from rest and the equation is v=v+a*t, what is her velocity after 7 seconds...
December 8, 2010 by Jess

Chemistry
What total energy must be absorbed (from the environment) to change 1.00kg of ice at -30.0C on a lake surface in February to water at 20.0C in August? Add the following heats.. heat ice from -30 to OC melt ice at 0C heat water from 0C to 20C
September 23, 2006 by J.M.

chemistry
A mole of reacts at a constant pressure of 43.0atm via the reaction Before the reaction, the volume of the gaseous mixture was 5.00L . After the reaction, the volume was 2.00L . Calculate the value of the total energy change, , in kilojoules.
October 19, 2008 by jessica

Chemistry
A gaseous reaction occurs at a constant pressure of 50.0 atm and releases 55.6 kJ of heat. Before the reaction, the volume of the system was 7.60 L. After the reaction, the volume of the system was 2.00 L. Calculate the total internal energy change, Delta U, in kilojoules.
October 31, 2010 by Rani

chemistry... HELPP
A gaseous reaction occurs at a constant pressure of 45.0 atm and releases 62.5 Kj of heat. Before the reaction, the volume of the system was 8.60 L . After the reaction, the volume of the system was 3.00 L. Calculate the total internal energy change in kilojoules.
November 5, 2012 by Ann

Physics
A 0.52kg mass at the end of a spring vibrates 4.0 times per second with an amplitude of 0.15m . a. Determine the velocity when it passes the equilibrium point. b.Determine the velocity when it is 0.12m from equilibrium c.Determine the total energy of the system.
October 27, 2013 by Juanita

physics
If a wheel turns with a costant rotational speed then: each point on its rim moves with constant roational velocity, each point on its rim moves with constant translational acceleration, the wheel turns with constant translation acceleration, the wheel turns through equal ...
December 9, 2006 by susane

Chemistry
Which of the following is an example of quantization? A. The amount of time spent in a classroom B. The number of students in a classroom C. Learning happening in a classroom D. The temperature range in a classroom I know I asked this question but I would this paragraph. Is it...
December 14, 2014 by Morgan

Physics
A 295kg box is pulled at a constant speed by the little engine. The box moves a distance of 2.8 m across the horizontal surface. (μ=.20) How much energy is transferred by the engine? (How much WORK is done?)
March 14, 2014 by Anonymous

physics
A couch with a mass of 100 kg is placed on an adjustable ramp attached to a truck. As one end raises, the couch begins to move downward. If it sldes with an acceleration of .79 m/s^2 at 12 degrees, what is the coefficient of kinetic friction. I still am having troubles with ...
January 20, 2011 by ash

physics
In the following figure m_1 = 20.0kg kg and alpha = 50.9 ∘ ^\circ. The coefficient of kinetic friction between the block and the incline is k = 0.40 What must be the mass m 2 of the hanging block if it is to descend 9.00m m in the first 3.00s s after the system is ...
July 4, 2013 by Bob

Maths
A boy cycled from his home to a friend's house 24km away at an average speed of 16km/h. Finding his friend absent, he returned home immediatly at an average speed of 12km/h. Find the average speed I know how to find the average speed, just that I need to know how to find out ...
November 3, 2011 by 10M1

bob Joe
38. A box slides down a 30.0 degree ramp with an acceleration of 1.20 m/s^2. Determine the coefficient of kinetic friction between the box and the ramp. I have no idea how to do this with only knowing the aceleration and the angle. Please tell me how to do this.
February 2, 2009 by Science

physics
A 350 piano slides 3.5 down a 33 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (see the figure ). The effective coefficient of kinetic friction is 0.30. Calculate the force exerted by the man.
November 9, 2010 by Anonymous

Chemistry: Answers please check
1. The kinetic-molecular theory states that all particles of matter are always in motion. a.) True b.) False Answer: True 2. Gases have molecules in rapid random motion. a.) T
April 2, 2011 by Cheryl

PHYSICS!
Two blocks are connected by a massless cord and are being pulled to the right by an external force F. They are accelerating at 2 m/s2. If needed, use g = 10 m/s2. With a coefficient of kinetic friction of 0.3, the external force acting on the 8 kg block is most nearly A.55 N B...
May 25, 2012 by Katie

Physics
In a Physics laboratory class, an object of mass 2.1 kg, attached by massless strings to two hanging masses, m1= 1.0 kg and m2= 4.0 kg, is free to slide on the surface of the table. the coefficient of kinetic friction between m2 and the table is 0.30. calculate the ...
October 15, 2012 by Ashley

dynamics
Mass of 2.3 kg and 4.5 kg is connected with the cord as shown. The coefficient of kinetic friction between box and floor is 0.35. Determine: a)The tension in the cord b)The acceleration of the blocks c)If the block start slides with 2.3 m/s, d)How far does a blocks move in 4 ...
May 7, 2013 by ruby

Science
A factory worker pushes a 29.2kg crate a distance of 4.1m along a level floor at constant velocity by pushing downward at an angle of 28* below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25.
March 17, 2014 by Garrett

Physics
How much work(energy) is needed to lift an object that weighs 200N to a height of 4m? My question: is weight the same as force? if not, how do I find the amount of force
December 17, 2010 by Rose

grade5
5 devices of energy in your home. please tell me. whats the largest source of power in the whole toronto. please help me i`m confused. i cant find good websites.
February 24, 2011 by science

PHYSICS
When the speed booster is set up horizontally at the edge of a table (h=1.11 m) it sends a toy car of mass m=0.06kg in the projectile motion, so that it lands at horizontal distance of x1=1.36 m away from the edge of the table. When the sam car with the same speed booster are ...
November 1, 2012 by Emily

Physics
Problem 3- A 12 kg stone slides down a snow-covered hill, leaving point A with a speed of 10 m/s . There is no friction on the hill between points A and B, but there is friction on the level ground at the bottom of the hill, between B and the wall. After entering the rough ...
December 12, 2013 by Anonymous

Chemistry Lab
Complete the table below: The hydrogen emission spectrum has four series (or sets) of lines named Balmer, Brackett, Paschen, and Lyman. Indicate the energy (infrared, ultraviolet, or visible), the nf value for each series, and all possible ni values up to 7. ( Separate the ...
January 17, 2011 by Shawn Tabrizi

Physic
Ok so this question was posted before but I'm confused by the answer. The problem is: The two masses (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in Figure 10-23 are released from rest, with m1 at a height of 0.87 m above the floor. When m1 hits the ground its ...
March 8, 2010 by Kelsey

Physics
A box of mass m with an initial velocity of v0 slides down a plane, inclined at theta with respect to the horizontal. The coefficient of kinetic friction is u. The box stops after sliding a distance x. How far does the box slide? Solve in terms of Vo, u, etc.
October 13, 2010 by Laura

physics
"A solid cylinder and a thin-walled hollow cylinder have the same mass and radius. They are rolling horizontally along the ground toward the bottom of an incline. They center of mass of each cylinder has the same translational speed. The cylinders roll up the incline and ...
April 1, 2011 by Seth

physics
"A solid cylinder and a thin-walled hollow cylinder have the same mass and radius. They are rolling horizontally along the ground toward the bottom of an incline. They center of mass of each cylinder has the same translational speed. The cylinders roll up the incline and reach...
April 3, 2011 by Seth

Physics
A 2.50 mass is pushed against a horizontal spring of force constant 26.0 on a frictionless air table. The spring is attached to the tabletop, and the mass is not attached to the spring in any way. When the spring has been compressed enough to store 15.0 of potential energy in ...
October 21, 2011 by Lauren

chemistry
Alexander wants to know exactly how many bars to pack in his backpack for the journey. To provide a margin of safety, he assumes that he will need as much energy for the return trip as for the uphill climb. How many bars should Alexander pack?" he weighs 171lbs there is a bar ...
October 8, 2009 by carla

Chemistry
Suppose a compound could point in any of two 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 8.174e-9J/K I used S= klnW and got lnW = 5.92e14. How do i get the number of ...
April 30, 2011 by Jude

biology
which of these would lead to an increase in carbon dioxide in the atmosphere a- decrease in animal respiration b- decrease in plant respiration c- an increase in photosynthesis d- an increase in auto and factory emissions 2. which activity occurs during the process of ...
December 23, 2013 by anonymous

Environmental Science
What are renewable energy sources?
September 12, 2007 by Patricia

Physical Science
"Can energy be created/destroyed
September 25, 2007 by Nneka

science
i am not the definition of muscular energy plzz help.....
November 10, 2007 by shikha

science
a list of renewable energy resources
March 9, 2008 by mary

physical science
what are 2 types of potential energy?
May 15, 2008 by leann

physical science
what is the energy of motion called?
May 15, 2008 by leann

biology
What are two disadvantages of nuclear energy?
May 27, 2008 by carlie

science
what is thermal energy plz help me stuck!
January 29, 2009 by Alex

9th grade
what are energy bar graphs?
March 13, 2009 by shana

physics
can pontential energy ever be negative?
April 2, 2009 by cynthia

Science
Where, in Nevada, is wind energy produced? THANKS!
April 10, 2009 by Mariz

5th grade
How does the suns energy travel?
May 19, 2009 by Julia

science 275
why conserving energy is important?
June 14, 2009 by sam

Home economics
What 2 units measure energy ?
September 18, 2009 by Leagh

science
what is the big idea of energy transfer
November 28, 2009 by kiko

chemistry
How does the spin of an electron affect its energy?
November 28, 2009 by ana

science
the flow of energy through a community is a ?
December 1, 2009 by emma

Science
WHat are advantages and disadvantages of solar energy?
January 6, 2010 by Ramandeep

Biology
What kind of energy do humans run on ?
February 1, 2010 by Anonymous

science
I need the definition of HEAT ENERGY.
February 7, 2010 by bharati

physics
what are some examples of sources of energy?
February 11, 2010 by Natalia

science
what is the flow of matter and energy is it waves
April 16, 2010 by mary

science
If water boils does it transmit energy
April 20, 2010 by Anonymous

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