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October 1, 2014

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: 87,481

Physics
A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 27.2 with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 53.7 kg, and the coefficient of kinetic friction ...
February 19, 2007 by Susu

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
An unstable high-energy particle enters a detector and leaves a track 1.35 mm long before it decays. Its speed relative to the detector was 0.992c. What was its proper lifetime? That is, how long would the particle have lasted before decay had it been at rest with respect to ...
April 8, 2010 by Hercules

Physics
A 0.5 kg wooden block is dropped from a height of 15 m. At what height must a 5g bullet be traveling upward strike the block in order to momentarily stop its fall? Assume that the time required for the bullet to come to rest in the block in negligibly short, that no internal ...
January 22, 2014 by Christina

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
I am trying to study for my exam i have tomorrow and this type of problem keeps giving me trouble can someone please help me:: A 3.24 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=11.8N at an angle theta=23.0degrees above the ...
January 30, 2012 by Amanda

Physics 1
A cart with mass 340 g moving on a frictionless linear air track at an initial speed of 1.5 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. After the collision, the first cart continues in its original direction at 0.42 m/s. (a) What is ...
April 22, 2014 by Alex

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

Science
Explain the energy transformations during skydiving Explain what happens once a skydiver reaches terminal velocity please help...i cant find any information...please note that I need to EXPLAIN
May 4, 2014 by Anonymous

Physical Science
1. To what is amplitude related? B. the maximum displacement from the rest position C. neither A nor B D. both A and B 2. Suppose two waves collide and the temporary combined wave that results is smaller than the original waves. What term best describes this interaction? A. ...
June 4, 2013 by Lanny

math
What similarities and differences do you see between functions and linear equations, Are all linear equations functions? Is there an instance when a linear equation is not a function? Create an equation of a nonlinear function and provide two inputs to evaluate.
October 20, 2008 by johnny

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
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 (elastic collision)
A ball of mass .44 kg and speed of 4.5 m/s collides head-on with a .22 kg ball at rest. Assuming perfect elasticity, what is the speed and direction of each ball afterwards? I know that the momentum is conserved here and since I am solving fo two variables, I think I would get...
February 1, 2007 by sean

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

physics
once a 21 kg crate is in motion on a hoizontal floor, a horizontal force of 58 N keeps the crate moving with a constant velocity. the acceleration of gravity is 9.81 m/s^2. what is mu k , the coefficient of kinetic friction, between the crate and the floor?
November 11, 2010 by autumn

physics
Block A has a mass of 6.07 kg and is on a rough incline of 12.5o to the horizontal. Block B has a mass of 4.82 kg and the coefficient of kinetic friction between Block A and the plane is 0.268. What is the acceleration of the blocks? What is the tension in the string? can ...
November 9, 2011 by Yul

physics
A skier slides horizontally along the snow for a distance of 22.3 m before coming to rest. The coefficient of kinetic friction between the skier and the snow is 0.0500. Initially, how fast was the skier going?
February 27, 2012 by Candy

physics
A skier slides horizontally along the snow for a distance of 20.8 m before coming to rest. The coefficient of kinetic friction between the skier and the snow is 0.0449. Initially, how fast was the skier going?
December 7, 2013 by n_sdn

science
A 25 kg box is being pushed across the floor by a constant force 100, 0, 0 N. The coefficient of kinetic friction for the table and box is 0.15. At t = 6.0 s the box is at location 14, 3, −4 m, traveling with velocity 6, 0, 0 m/s. What is its position and ...
June 30, 2014 by rachel

Physics
A400 N child is swing that is attached tow ropes 2m long , find the gravitational potential energy of the child-earth system relative to the red line level when ropes make an angle with the vertical .
December 4, 2013 by Mariam

Physics
A 2.5-kg block is sliding along a rough horizontal surface and collides with a horizontal spring whose spring constant is 320 N/m. Unstretched, the spring is 20.0 cm long. The block causes the spring to compress to a length of 12.5 cm as the block temporarily comes to rest. ...
May 30, 2014 by Drew

Calculus
Astronomers have a mathematical model for the orbital speed of the stars as a function of their distance x from the center of the galaxy: V(x) = 350x/(1+(x^2))^(3/4) where x = 1 for 10,000 light years, x = 2 for 20,000 light years. At a distance of 10,000 light years, the ...
January 24, 2012 by Scooby10

Physics - KE
In Figure 11-32 (which shows a ball at the top of an incline, at the bottom of the incline a loop begins with radius R and Q a point on the loop lined up with the center of the loop), a solid brass ball of mass m and radius r will roll without slipping along the loop-the-loop...
March 27, 2007 by COFFEE

Calculus (for Business)
Suppose a fish swimming a distance of L ft at a speed of v fit/sec relative to the water against a current flowing at the rate of u ft/sec (u<v) expends a total energy given by E(v)= (aLv^3)/(v-u) Where E is measured in foot-pounds and a is a constant. a) Evaluate the limit...
February 6, 2010 by Leah

Physics
A baseball is thrown from the roof of 23.5m -tall building with an initial velocity of magnitude 10.0m/s and directed at an angle of 53.1∘ above the horizontal. a.What is the speed of the ball just before it strikes the ground? Use energy methods and ignore air ...
May 9, 2014 by Anonymous

Physics: true or false
Doubling the amplitude of a wave will double the amount of energy the wave can transfer. A. True B. False <---answer (not sure) The medium determines the speed through which most mechanical waves will travel. A. True <---answer (not sure) B. False
April 4, 2009 by sophie

Physics
the relationship between linear speed and net force is inverse right? can someone explain why to me please.
January 31, 2011 by Mary Sue

physics
I really need help on D part of the following problem: A clever engineer designs a "sprong" that obeys the force law F subscript e = -q(x - x subscript e)^3, where x subscript e is the equilibrium position of the end of the sprong and q is the sprong constant. For simplicity, ...
December 1, 2009 by Ashley

physics
A 450 g block is at rest on a horizontal surface. The coefficient of static friction between the block and the surface is 0.670, and the coefficient of kinetic friction is 0.380. A force of magnitude P pushes the block forward and downward as shown in the figure below. Assume ...
October 17, 2011 by carlton

chemistry
How much energy is evolved when 2.65 mg of Cl(g) atoms adds electrons to give Cl1-(g) ions. No clue how to go about solving this problem as it doesn't really relate to any of my examples in my text book or notes. All I can find that related to this problem is electron affinity...
April 3, 2010 by Spider

math
Are all linear equations functions? Is there an instance in which a linear equation is not a function?
June 2, 2009 by scooby9132002

Math - Solving Linear systems
Solve the linear system in two space [x,y] = [-12,-7] + s[8,-5] [x,y] = [2,-1] + t[3,-2]
August 28, 2010 by Shaila

Linear algebra
Use the properties of linear operations with vectors to show that for any vector a: -> 0a=0
May 4, 2011 by Ryan

pre cal
Is the given function linear or nonlinear. If linear determine the slope. x y = f(x) 1 -2 -2 -14 3 8 4 4 -6 1
December 1, 2011 by anon

linear algebra
Use an inverse matrix to solve each system of linear equations. A) x+2y=-1 B)x+2y=10 C)x+2y=-3 x-2y=3 x-2y=-6 x-2y=0
February 12, 2012 by mando

linear algebra
Use an inverse matrix to solve each system of linear equations. A) x+2y=-1 B)x+2y=10 C)x+2y=-3 x-2y=3 x-2y=-6 x-2y=0
February 12, 2012 by mando

linear algebra
Use an inverse matrix to solve each system of linear equations. A) x+2y=-1 B)x+2y=10 C)x+2y=-3 x-2y=3 x-2y=-6 x-2y=0
February 12, 2012 by mando

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

Physics
On an open-reel tape deck, the tape is being pulled past the playback head at a constant linear speed of 0.372 m/s. (a) If the radius of the film taken up so far (as shown in the upper part of the drawing) is 0.0576 m, find the angular speed of the take-up reel. ____ rad/s (b...
October 25, 2010 by Jordan

Desperate need of Help for Physics.
Moment of inertia of a flywheel disk question: Do you think the calculated moment of inertia is larger or smaller than the "true" moment of inertial of the actual disk? question: calculate the percent difference between the static and the dynamic moment. I got .0195kgm^2 for ...
November 15, 2006 by Teesha

Physics
Two cars travel at the same speed, so that they move 105 km in one hour. One car, a sleek sports car, has a motor that delivers only 35 kW of power at this speed. The other car needs its motor to produce 65 kW to move the car this fast. The difference is caused by air ...
August 18, 2011 by Gullu

Physics
Two cars travel at the same speed, so that they move 105 km in one hour. One car, a sleek sports car, has a motor that delivers only 35 kW of power at this speed. The other car needs its motor to produce 65 kW to move the car this fast. The difference is caused by air ...
August 18, 2011 by Gullu

Math
use linear combinations to solve the system of linear equations. 2x+y=4 x-y=2
February 6, 2008 by Crystal

Math
Use linear combinations to solve the system of linear equations. 5x=4y-30 2x+3y+-12
January 18, 2011 by Sarah

math linear equations
how do u make a linear equation from a data table??
May 9, 2011 by bob

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

physics
The driver of a 1024 kg truck traveling 32.6 m/s North on I-77 has to make a sudden stop. If it requires a distance of 57.1 m for the truck to stop, use conservation of energy to find the net force acting on the truck.
November 18, 2009 by Cory

physics
The driver of a 1024 kg truck traveling 32.6 m/s North on I-77 has to make a sudden stop. If it requires a distance of 57.1 m for the truck to stop, use conservation of energy to find the net force acting on the truck.
December 9, 2009 by Sandy

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

chemistry
Why does the total energy (Ke+Pe) decrease with height?
December 6, 2009 by Maddie

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

Physics
What is the energy of a hydrogen atom with a 1.70 nm diameter?
April 25, 2010 by MK

biology
How does energy flow through the biosphere?
May 19, 2010 by Olivia

science
3 types of energy collected by telescopes
August 25, 2010 by reagan

science
definition of energy calculations of force
October 10, 2010 by tuks

science
should we use geothermal energy ?
November 3, 2010 by hailey

6th grade
how does geothermal energy work ?
November 3, 2010 by hailey

chemistry
calculate the energy of a wave that has a frequency of 3.5*10^8 m/s
November 22, 2010 by linda

Chemistry
what is the outer energy level for beryllium?
November 30, 2010 by Sandy

chemistry
what is the energy of a photon with the frequency of 3.5 x 10 delta 24 hz?
December 17, 2010 by zahra

Chemistry
How much energy does 3.52 * 10^-7m of light have?
January 20, 2011 by Jennifer

chemistry
what is activation energy for combustion of sawdust
March 30, 2011 by christabel

chem
what is a potential energy curve and how do you know where to label Ea, and H??
May 15, 2011 by Sara

physics
if m is in kg, ag in m/s2, and h in metre, what is the unit of potential energy?
August 23, 2011 by ivie

science
What is the difference in Thermal Energy and Heat.
October 24, 2011 by Anna

Science
What is the source of energy in fossil fuels?
November 2, 2011 by Bob

Science
What are they asking in this question? Which is an alternative source of energy?
November 8, 2011 by Bob

physics
the differences between work and energy??
November 27, 2011 by west

chemistry
what is the energy in joules of one quantum of 55.4 nm
February 4, 2012 by Anonymous

SCIENCE
FOOD & HEALTH SOURCE & ENERGY
May 25, 2012 by SS

PHSC
Which part of a wave relates to its energy ?
July 5, 2012 by brandy

physics
Which part of a wave relates to its energy ?
July 5, 2012 by brandy

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