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May 30, 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: 107,433

physical
A bicycle and its rider together has a mass of 95 kg. What power output of the rider is required to maintain a constant speed of 4.8 m/s (about 10.7 mph) up a 5.0% grade (a road that rises 5.0 m for every 100 m along the pavement)? Assume that frictional losses of energy are ...
October 12, 2013 by laila

preap physics
A 15.4kg block is dragged over a rough horizontal surface by a constant force 191N acting at an angle of 25.3 degrees above the horizontal. The block is displaced 80.4m and the coefficient of kinetic friction is. 2 A) find the magnitude of the work done by the force of ...
January 11, 2012 by jay

Physics
How many slices of pizza must you eat to walk for 1.0 h at a speed of 5.0 km/h? (Assume your mass is 68 kg). Our book provides: -One slice of pizza's energy content is 300 cal, or 1260 KJ. -To walk at 5 km/h= 380 W of a 68 kg individual. Thanks!!!
April 14, 2011 by Kirsten

english - 4
(1) In 1905 Einstein interpreted the “photoelectric effect” of light, a phenomenon that cannot be explained by the wave theory of light. (2) When a photon strikes an electron, the resulting action is analogous to the collision of billiard balls. (3) The effect of such ...
May 27, 2008 by rose- Ms. sue

science(2 QUESTIONS)
PLEASE ANSWER MY 2 QUESTIONS IN SCIENCE THANKS 3.when a negatively charged object moves in the opposite direction of an electric force field,the potential energy of the object. A.becomes zero(I PICK THIS) B.increases C.decreases D.stays the same 4.the two south pole ends of ...
February 2, 2014 by Anonymous

physical
a crate rest on a ramp that makes an angle of tangent with the horizontal.the coefficient of kinetic friction is 0.35 and the coefficient of static friction is 0.45.the inclination of the ramp is slowly increased.(a)find the angle at which the crate starts to slip down the ...
September 6, 2012 by kim

science
4. Assignment: Photosynthesis and Cellular Respiration Powerpoint Energy acquisition is essential for all life. Whether the organism is classified as plant or animal, single-celled or multicellular, the exchange of energy and the formation of products consist of a series of ...
June 12, 2010 by barb

Physics
4830J of work is done by a laborer pulling a 27.0 kg crate across a cement floor at a constant speed of 7.82 m/s by a 454 N force. The rope is being pulled at a 37.0 degree angle to the floor. a)How far was it pulled? b)What is the friction force? c)What is the work done ...
November 28, 2014 by Brie

science(check answers)
1. A 2. C 3. A 4. D 1. Coal, oil, and natural gas are inexpensive sources of fuel which do not cause pollution when used. A. true B. false 2. One reason people around the world use coal as an energy source is: A. It is nonrenewable. B. it can be found many places C. it is a ...
March 11, 2014 by matt

physics
"A rod with length L , mass m and resistance R slides without friction down parallel conducting rail of negligible resistance . the rails are connected together at bottom, forming a conducting loop with the rod the plain of the loop makes angle Z wih horizontal , a uniform ...
July 3, 2009 by ali

chemistry, please help
2NO2(g)--> 2NO(g) + O2(g) , H=+114.2kJ (Note: H, S, G all have a degree sign next to them) NO: H(enthalpy)=90.3kJ/mol, S(entropy)=210.7J/mol*K, G(gibbs energy)=86.6 O2: H(enthalpy)=0, S(entropy)=?, G(gibbs energy)=0 kJ/mol NO2: H(enthalpy)=33.2, S=239.9, G=51 For part a, I ...
February 4, 2008 by apoorva

physics
If a gasoline engine has an efficiency of 21 percent and loses 780 J to the cooling system and exhaust during each cycle, how much work is done by the engine? Is it 3709.5??? Chemical energy in (as fuel and oxygen) = Work out + Heat out 21% is the ratio of Work out to Chemical...
February 15, 2007 by anonymous

Physic
A machine part is made from a uniform solid disk of radius R = 0.161 m and mass M = 7.75 kg. A hole of radius R/2 is drilled into the disk, with the center of the hole at a distance R/2 from the center of the disk (the diameter of the hole spans from the center of the disk to ...
November 28, 2011 by jean

Need help at this very minute with physics
In Figure 10-53, two blocks, of mass m1 =400 g and m2 =600 g, are connected by a massless cord that is wrapped around a uniform disk of mass M = 500 g and radius R = 12.0 cm. The disk can rotate without friction about a fixed horizontal axis through its center; the cord cannot...
December 1, 2006 by John

Physics
In which of the situations listed below is energy being transferred as heat to the system in order for the system to do work? In which situation is work being done on the system in order for energy to be transferred from the system as heat? a. Two sticks are rubbed together to...
March 29, 2010 by Edward

tatiana
A car tire of radius 45cm turns at a constant 14 rads/s. For a point on the edge calculate a) the tangential V b) the tangential a c) the centripetal "a" work: a) v= rw v= .45m * 14 rads/s= 6.3m/s b) at=alphar alpha= w/t I am unsure how to get time? c) at= w^2r at= 14^2 * .45 ...
December 9, 2006 by physics

Chemistry
According to the kinetic theory, gases consist of particles that A. occupy considerable volume. B. are relatively close together. C. exert attractive and repulsive forces on other particles. D. have motion that is constant, random, and rapid. C?
March 9, 2015 by Ciaria

Chemistry and Science
carbon dioxide is a "greenhouse" gas in that it absorbs energy from the sun, causing heating of the atmosphere and eventually global warming. carbon dioxide is produced from the combustion of carbon-containing fuels such as coal (mainly carbon), natural gas (mainly CH4), and ...
February 17, 2012 by Rose Bud

avgforce*distance=Original energy=mgh
avgforce*distance=Original energy=mgh mgh? m= mass g= 9.8 h = hr?
September 22, 2008 by Jenny

Physics
A Chinook Salmon has a maximum underwater speed of 3.58 m/s, but it can jump out of water with a speed of 6.68 m/s. to move upstream past a waterfall, the salmon does not need to jump to the top of the fall, but only to a point in the fall where the water speed is less than 3....
September 24, 2006 by JIll

chemistry
Which factors below affect the rate of a chemical reaction? -Collision frequency -Number of collisions having the least activation energy -Intermolecular orientation -Being Exothermic or Endothermic Also, what formula would I use for this problem: "What is the hydroxide ion ...
April 29, 2007 by anonymous

Chemistry
Hi! I have another question. So 1 kcal of heat is added to 1.5 L of oxygen in a container at constant pressure. (1atm). Then volume increases to 3.1L. they want to know total energy change. Now i think the formula is DH=DU + PDV so what i did was DH = 1 kcal + 1atm(3.1-1.5) = ...
June 10, 2009 by Dave

Chemistry
Hi! I have another question. So 1 kcal of heat is added to 1.5 L of oxygen in a container at constant pressure. (1atm). Then volume increases to 3.1L. they want to know total energy change. Now i think the formula is DH=DU + PDV so what i did was DH = 1 kcal + 1atm(3.1-1.5) = ...
June 10, 2009 by Dave

Chemistry
Hi! I have another question. So 1 kcal of heat is added to 1.5 L of oxygen in a container at constant pressure. (1atm). Then volume increases to 3.1L. they want to know total energy change. Now i think the formula is DH=DU + PDV so what i did was DH = 1 kcal + 1atm(3.1-1.5) = ...
June 11, 2009 by Dave

Chemistry
Four particles have free access to distribute into four different energy levels 0,5,10, and 20J. If these four particles are to create two macrostates having total energies 10J and 40J, which macrostate has more entropy?
April 18, 2013 by Catherine

Heat and properties of matter
1. Which of the following is not true a. Evaporation occurs at any temprature of a liquid b. Boiling takes place only at the surface of the liquid c. Evaporation occursonly at the surface of a liquid d. Boiling of a liquid takes place at a definite temprature and pressure 2. ...
April 23, 2015 by Mutiyat

Physics
Electrons in a beam incident on a crystal at an angle of 300 have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5A0, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing through ...
April 3, 2011 by Abby

Physics
Electrons in a beam incident on a crystal at an angle of 300 have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5A0, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing through ...
April 5, 2011 by Abby

physics
Electrons in a beam incident on a crystal at an angle of 300 have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5A0, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing through ...
April 7, 2011 by Jen

Physics
A large flatbed truck hauls a heavy wood crate as shown. The crate is not tied down and simply rests on the metal bed of the truck. Find the maximum acceleration the truck can have if the crate is not to slide along the truck bed. (Static friction is 0.5 and kinetic friction ...
November 5, 2014 by Sara

Chemistry
How do I find the number of energy levels in a positive and a negative ion? And also how do I find the number of electrons in a ion and a atom?
November 2, 2014 by Anonymous

engineering
In the process of electrolysis, electrical power is used to separate water into oxygen and hydrogen molecules via the reaction: H2O --> H2 + ˝O2 This is very much like running a hydrogen fuel cell in reverse. We assume that only the activation potential for the hydrogen ...
December 19, 2013 by Timothy Boons

physics
In the process of electrolysis, electrical power is used to separate water into oxygen and hydrogen molecules via the reaction: H2O --> H2 + ˝O2 This is very much like running a hydrogen fuel cell in reverse. We assume that only the activation potential for the hydrogen ...
December 20, 2013 by Arnold Smith

physics - quantum mechanics
hi can you please help me with this particular question? thanks a lot ___________________________________ The work function of a material refers to the minimum energy required to remove an electron from the material. Assume that the work function of gold is 4.90eV and that of ...
August 5, 2007 by duda

colledge physics
A block of mass 0.78kg starts from rest at point A and slides down a frictionless hill of height h. At the bottom of the hill it slides across a horizontal piece of track where the coefficient of kinetic friction is 0.29. This section (from points B to C) is 4.08m in length. ...
October 19, 2012 by shyne

URGENT! Physics
A boy shoves his stuffed toy zebra down a friction-less chute, starting at a height of 1.07 m above the bottom of the chute and with an initial speed of 1.87 m/s. The toy animal emerges horizontally from the bottom of the chute and continues sliding along a horizontal surface ...
November 5, 2012 by Jessica <3

Physics
1) A circular disk 0.20m in diameter starts from rest and accelerates with constant angular acceleration to an angular acceleration to an angular velocity of 210 rad/s in 10.00s. Find the angular acceleration and the angle which the disk has turned in degrees. 2) A car with ...
April 9, 2013 by Anonymous

physics
A freight company uses a compressed spring to shoot 2.00 kg packages up a 1.00-m -high frictionless ramp into a truck, as the figure shows. The spring constant is 481 N/m and the spring is compressed 30.0 cm . A. What is the speed of the package when it reaches the truck? B. A...
November 13, 2010 by Anonymous

physics
A cannon fires a shell at an angle of 55.0° above the horizontal. The shell has a mass of 17.5 kg, and its initial speed as it leaves the cannon is 289 m/s. The cannon is not anchored to the ground. It is mounted on a base—a large block of wood—which is sitting on a level ...
November 1, 2010 by becca

physics
A potential energy function for a two-dimensional force is of the form U = 3 x2y - 6 x. Find the force that acts at the point (x, y). (Use x and y as appropriate.)
February 24, 2009 by Jessi

chemistry
find the mass of C3H8 required to generate 2.5x10^8 KJ of energy when combusted with O2 gas to produce CO2 gas and water vapor
November 1, 2010 by sara

Physics
A monatomic ideal gas expands from 1.00m^3 to 2.50m^3 st a constant pressure of 2.00x10^5 Pa. Find the change in the internal energy of the gas.
November 22, 2012 by S

Physics
A monatomic ideal gas expands from 1.00m^3 to 2.50m^3 st a constant pressure of 2.00x10^5 Pa. Find the change in the internal energy of the gas.
November 22, 2012 by A

Physics
A monatomic ideal gas expands from 1.00m^3 to 2.50m^3 st a constant pressure of 2.00x10^5 Pa. Find the change in the internal energy of the gas.
November 23, 2012 by A

Physics
A monatomic ideal gas expands from 1.00m^3 to 2.50m^3 st a constant pressure of 2.00x10^5 Pa. Find the change in the internal energy of the gas.
November 24, 2012 by B

Chemistry
Find the change in internal energy for this reaction. Enter in kJ. 2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(l) Enthalpy of reaction= -2599 kJ
October 22, 2014 by Kales

college chemistry
Use standard enthalpies of formation to determine ƒ˘Horxn for: 2NH3(g) + 3O2(g) + 2CH4(g) ¨ 2HCN(g) + 6H2O(g) in kilojoules. Find the change in internal energy for this reaction in kJ
October 18, 2010 by jake

physics
Find the wavelength (in nm) of a photon whose energy is 5.90 x 10-19 J. I understand that I have to use this equation to figure out the problem E=nhf, I just keep getting the wrong answer. Which is 33.68 nm
July 21, 2012 by Beth

Chemistry
Use standard enthalpies of formation to determine ΔHorxnfor: 3NO2(g) + H2O(l) → 2HNO3(aq) + NO(g) -133.5 = Delta H Find the change in internal energy for this reactioion.. ???? In KJ
February 27, 2014 by Steve

physics
Mouse steals piece of cheese by rolling across the floor with a force of 5.0 N. With what acceleration does the cheese move? At what speed is the cheese rolling after 10 seconds?
November 9, 2010 by Abby

physics
1.A truck with a mass 5000 kg is heading East at 20 m/s. Meanwhile a car with a mass 2500 kg is heading North at 30 m/s. The two vehicles collide at an intersection, get stuck together, and the wreckage keeps moving to some direction.find the speed of the wreckage and the ...
July 8, 2008 by Sandhya

Physics
Two masses Ma= 2.0 and Mb= 5.0 are on inclines and are connected together by a string as shown in the figure(Figure 1) . The coefficient of kinetic friction between each mass and its incline is u= 0.30. If Ma moves up, and Mb moves down, determine their acceleration.
June 29, 2012 by Truman

odu
A toboggan approaches a snowy hill moving at 12.9 . The coefficients of static and kinetic friction between the snow and the toboggan are 0.390 and 0.290, respectively, and the hill slopes upward at 44.0 above the horizontal.
October 11, 2012 by ty

Physics
An object (mass 3.2kg ) slides upward on a vertical wall at constant velocity when a force F of 54N acts on it at an angle of 60∘ to the horizontal. N = 27 N Determine the force of kinetic friction on the object.
October 3, 2013 by Cheech

physics
A bicyclist traveling at 8 m/s rides around an unbanked curve. The coefficient of friction (is this static or kinetic friction?) between the tires and the road is 0.42. What is the radius of the shortest turn that the bicyclist can safely make?
November 11, 2013 by Liz

PLEASE HELP! SCIENCE
The system of blocks shown in the diagram below is being accelerated to the right at 4.4 m/s2 What is the applied force Small box mass- 0.10 kg Big box mass - 0.20 kg Acceleration - 4.4 m/s2 Coefficient kinetic - 0.35
October 26, 2014 by Rosie

physics
A contestant in a winter games event pushes a 41.0 kg block of ice in the positive direction across a frozen lake as shown in the Figure (a). The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03.
December 7, 2014 by mathew

physics
The uniform solid block in Fig. 11-36 has a mass of M = 5.60 kg and edge lengths a = 17.5 cm, b = 39.5 cm, and c = 2.85 cm. Calculate its rotational inertia about an axis through one corner and perpendicular to the large faces I know you have to find the center of mass to get ...
January 18, 2011 by almost there

Physics
I really need help with only this two problems. 1. A 6.0 kh block, sliding to the east across a horizontal, frictionless surface with a momentum of 30 kg*m/s^, strikes an obstacle. The obstacle exerts an impluse of 10 N*s to the west on the book. The speed of the block after ...
February 2, 2010 by Priscilla

physics
Two Bals. of masses mA = 45 grams and mB = 65 grams are suspended as shown. The lighter ball is pulled away to a 66 degree angle with the vertical and released: ----------------------------- /| | - /č| | | / | | | 30 cm / | | | mA | | | mA mB - where č = 66 degrees, and the ...
April 9, 2013 by SC

physics
a horizontal force of 95 N is applied to 60 kg crate on rough , level surface. if crate accelerates at 1.20 m/s2 , what is magnitude of the force of kinetic friction acting on the crate?
February 28, 2010 by jerry

Physics
A 10 kg penguin slips down a rough incline of 35o . If the coefficient of kinetic friction between the penguin and the incline is 0.15, determine the penguin’s acceleration.
November 20, 2013 by Angie

Physics
A 45kg block slides down an incline that is angled at 41 degrees. If the coefficient of kinetic friction between the block and the incline is 0.45 what is the block's acceleration?
February 19, 2014 by Taylor

science
Hi, this question was posted by liverpool I see but has not been responded to after 2nd entry each time. What happens when a candle is alight. Having to show chemical/physical change. The question is 'Explained both changes using the Big Idea of Energy'? Can someone explain ...
October 22, 2006 by melody

Physics
A sled weighing 60 N is pulled horizontally across snow so that the coefficient of kinetic friction between the sled and the snow is 0.100. A penguin weighing 70 N rides on the sled. If the coefficient of static friction between the penguin and the sled is 0.700, find the ...
December 6, 2006 by Armando

11th grade
a spring with a spring constant of 4 newtons per meter is compressed by a force of 1.2 newtons. what is the total elastic potential energy stored in this compressed spring
April 13, 2010 by Anonymous

Physics
Block 1, with mass m1 and speed 4.5 m/s, slides along an x axis on a frictionless floor and then undergoes a one-dimensional elastic collision with stationary block 2, with mass m2 = 0.41m1. The two blocks then slide into a region where the coefficient of kinetic friction is 0...
November 1, 2011 by Ashley

physics
A 49.7-cm diameter disk rotates with a constant angular acceleration of 2.7 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time.
October 23, 2010 by Anonymous

Physics
A compact disk rotates from rest to 500 rev/min. in 5.5s. a) What is the angular acceleration assuming it is constant. b) How many revolutions does the disk make in 5.5 s. c) How far does a point on the rim 6 cm from the center of the disk traveling during the 5.5 s.
April 4, 2013 by Jenny

Physics
A 10 kg sled slides down a hill with an incline of 30 degrees above the horizontal. Because of friction, it maintains a constant speed. For every meter that is traveled, how much energy (in joules) does the sled lose? I say 98 sin(30) Joules?
March 11, 2009 by Harold

physics
A block of mass = 0.85 kg is connected to a spring of force constant = 775N/m on a smooth, horizontal surface. 1) Plot the potential energy of the spring from = -5.00 cm to = 5.00 cm. 2) Determine the turning points of the block if its speed at x = 0 is 1.1 m/s I am so stumped...
October 16, 2011 by leeece

physics
A block of mass = 0.85 kg is connected to a spring of force constant = 775N/m on a smooth, horizontal surface. 1) Plot the potential energy of the spring from = -5.00 cm to = 5.00 cm. 2) Determine the turning points of the block if its speed at x = 0 is 1.1 m/s I am so stumped...
October 16, 2011 by leeece

Math
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 26, 2011 by Daphine

Physics
1.A 24 kg crate initially at rest on a horizon floor requires a 75 N horizontal force to set it in motion, once the crate is in motion, a horizontal force 53 N keeps the crate moving with a constant velocity. Find the coefficient of kinetic friction, between the floor and crate.
October 19, 2009 by Bob

physcs
A potter's wheel having a radius 0.55 m and a moment of inertia 11.6 kgˇm2 is rotating freely at 55 rev/min. The potter can stop the wheel in 8.0 s by pressing a wet rag against the rim and exerting a radially inward force of 66 N. Find the effective coefficient of kinetic ...
April 17, 2010 by Kelsey

physics
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 12 A, and that of the vacuum cleaner is 5.5 A. Determine the power consumed by the blow-dryer. Determine the power consumed by the vacuum cleaner. Determine the ...
January 24, 2011 by Anonymous

Physics
A solid disk rotates in the horizontal plane at an angular velocity of 0.034 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.11 kgˇm2. From above, sand is dropped straight down onto this rotating disk, so that a ...
August 16, 2011 by Kristi

Physics
A solid disk rotates in the horizontal plane at an angular velocity of 0.036 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.17 kg ˇ m2. From above, sand is dropped straight down onto this rotating disk, so that a ...
November 1, 2011 by jason

physics
A solid disk rotates in the horizontal plane at an angular velocity of 0.040 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.13 kgˇm2. From above, sand is dropped straight down onto this rotating disk, so that a ...
November 16, 2014 by bob

Biology
Which compound has the highest free energy and produces the most ATP when oxidized? A. acetyl CoA B. glucose C. pyruvate D. carbon E. both pyruvate and carbon I've spent the past hour looking for this answer within my textbook or through Google searches. I can't seem to locate...
September 29, 2009 by Rich

Chem
I have a question about maximum energy and maximum entropy. How would you know whether the tendency towards maximum energy favours to reactants or the products. Secondly, how would you know whether the tendency towards maximum entropy favours the reactants or products?
April 15, 2009 by Lena

Science
Is Nuclear energy man-made or natural and HOW? Nuclear energy used to make electricity is not natural but man made. HOW. That's a long long story. Here is a site that should help get you started. Post with more specific questions after you have studied this. http://www....
December 19, 2006 by Jenna

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

Chemistry
1.How much energy is emitted by 1 mol of sodium ions emitting light at this wavelength? Answer in units of kJ. This is what I did for this problem, but my answer is wrong 45.8 mg = 0.0458 g 0.0458 g / (23.0 g/mol) = 0.001991 mol Na 0.001991 mol x (6.02214 x 10^23) = 1.199 x 10...
February 13, 2015 by Anna

Physics (Energy and Momentum)
A 4400 kg rocket is set for vertical firing. If the exhaust speed is 1500 m/s, at what rate (in kilograms/second) must the gas be ejected to supply the thrust needed to give the rocket an initial upward acceleration of 23.0 m/s^2? Not sure where to start.
April 17, 2012 by Andrew

physics
Two balls of equal mass collide and stick together as shown in the figure. The initial velocity of ball B is twice that of ball A. (Take č = 34°.) (a) Calculate the angle above the horizontal of the motion of mass A + B after the collision. 1 Units are required for this answer...
February 25, 2011 by important

Physics
A 0.70 kg mass at the end of a spring vibrates 4.0 times per second with an amplitude of 0.15 m. Determine the velocity when it passes the equilibrium point. Determine the velocity when it is 0.11 from equilibrium. Determine the total energy of the system.
December 2, 2010 by Eden

AP physics
a 5.7 kg ball rolls over the edge of a 4.4 m tall cliff. If the total mechanical energy of the ball is 890 j at the instant that it goes over the edge, how fast is the ball moving? Not sure how to get V when you know TME.
October 18, 2011 by James

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

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
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

Science
How does energy and matter relate?
September 5, 2007 by Rosa

Science
How Does Heat Energy Travel?
October 16, 2007 by Louise

Science
WHat is "Massive Energy Structures"
November 29, 2007 by Leshay

science
how is light formed by energy?
March 10, 2008 by Ashley

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