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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.

129,229 results

phy
Two crates, of mass m1 = 60 kg and m2 = 130 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is exerted on the 60 kg crate. The coefficient of kinetic friction is 0.15.

college physics
A box is sliding down a ramp sloping 25° above the horizontal. The coefficient of kinetic friction is 0.15. What is the acceleration? The answer is 2.8 m/s^2. How can this be solved with out mass?

physics
a 40-N forcee pulls a 4-kg a horizontal distance of 8 meterr. the rope makes an angle of 35 degree with the floor and the coefficient of kinetic friction is 0.2. what is the work done by each acting on block?

physics1
at a playground a child slides that makes a 42 degrees angle with the horizontal direction.The coefficient of kinetic friction for this motion is 0.20 What is the magnitude of her acceleration during her sliding

physics
12.5 kg wooden crate with an initial velocity of 2.5 m/s slides across a rough cement floor for 1.7 m before coming to rest. Calculate the coefficient of kinetic friction

Physics
Starting from rest, a skier slides 100 m down a 28 degree slope.How much longer does the run take if the coefficient of kinetic friction is 0.17 instead of 0?

science
3. One calorie is the energy required to raise one gram of water one degree Celsius. Since we use the joule as the standard measurement of energy, 1 calorie = 4.184 J. If a pot is placed on the stove with 2.4 liters of water at a temperature of 27°C, how many joules are ...

Physics
To move a large crate across a rough floor, you push on it with a force at an angle of 21 below the horizontal, as shown in the figure. Find the acceleration of the crate if the applied force is 400 , the mass of the crate is 32 and the coefficient of kinetic friction is 0.31.

physics
A 1060 N crate is being pulled across a level floor by a force F of 300 N at an angle of 35° above the horizontal. The coefficient of kinetic friction between the crate and the floor is 0.25. Find the magnitude of the acceleration of the crate. answer in m/s2 if possible. Thanks

physics
Two blocks of mass m1 = 1.0 kg and m2 = 2.5 kg are connected by a massless string.M1 is on the surface and mass 2 is hanging on the surface. They are released from rest. The coefficent of kinetic friction between the upper block and the surface is 0.40. Calculate the speed of ...

Physics
A salami sandwich is dropped from the top of a 37 m tall construction crane. What is the speed of the sandwich when it is halfway to the ground? (Use conservation of energy!)

ITT
A 1kg object has a potential energy of 20 J while stationary at the top of an incline. Neglecting friction, what is its speed halfway down the incline?

Physics
A force of 800 N is required to move a 9000 N boat through the water with a speed of 20 m/s. The boat’s engine is providing energy at a rate of

physics
A 22.1 kg child descends a slide 3.4 m high and reaches the bottom with a speed of 2.4 m/s. How much thermal energy due to friction was generated in this process? I'm sure where to even start this problem

physics
A 820-{\rm kg} sports car collides into the rear end of a 2700-{\rm kg} SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 3.0 {\rm m} before stopping. The police officer, estimating the coefficient of kinetic friction between ...

physics
A 820-{\rm kg} sports car collides into the rear end of a 2700-{\rm kg} SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 3.0 {\rm m} before stopping. The police officer, estimating the coefficient of kinetic friction between ...

Physics please help cant figure this out
starting with an initial speed of 5.00 m/s at a height of 0.265 m, a 1.75 kg ball swings downward and strikes a 4.45 kg ball that is at rest, as the drawing shows. (a) Using the principle of conservation of mechanical energy, find the speed of the 1.75 kg ball just before ...

physics
A 25 kg cannon ball is fired from a cannon with muzzle speed of 1520 m/s at an angle of 35.5 ◦ with the horizontal. The acceleration of gravity is 9.8 m/s 2 . Use conservation of mechanical energy to find the maximum height reached by first ball. Answer in units of m. I ...

Physics
The ultrasonic transducer used in medical ultrasound imaging device is a very thin disk m = .10g driven back and forth in SHM at 1.0 MHz by an electromagnetic coil. a.) The maximum restoring force is 40,000 N. What is the maximum oscillation amplitude that won't rupture disk? ...

Chemistry due soon
I am having some chemistry problems. 3. The graph compares the 1s orbital energies for the F atom (Z = 9), the Ne+ ion (Z = 10), and the Na++ ion (Z = 11). (the graph shows F having an Orbital Energy of 692.45, Ne+ with 47.74, and Na++ with 33.52) a. How many electrons does ...

chemistry due soon
I am having some chemistry problems. 3. The graph compares the 1s orbital energies for the F atom (Z = 9), the Ne+ ion (Z = 10), and the Na++ ion (Z = 11). (the graph shows F having an Orbital Energy of 692.45, Ne+ with 47.74, and Na++ with 33.52) a. How many electrons does ...

science
cam anybody give me an explanation of the kinetic theory. My science is due on friday 16th november. please help!

Science
Hi, could someone please explain radiation,conduction, convection, the kinetic molecular theory, and the particle theory? Thanks!

physics
a 5 kg box slides a 10m distance on ice. if the coefficient of kinetic friction is .20, what is the work done by the friction force?

physics
Static friction is smaller than kinetic friction because it is harder to keep an object than moving than to put it in motion.

Physics
According to Kinetic Theory, the molecules of a gas at given temp: a) all move with speed Vrms b) all move at speeds greater than Vrms c) speeds less than Vrms d) above, at, or below Vrms e) none i think its D as Vrms is an average but i am not sure

physics
A 5.0 gm marble is fired vertically upward using a spring gun. The spring must be compressed 8 cm if the marble is to just reach a target 20 m above the marble’s position on the compressed spring .(a) What is the change in the gravitational potential energy of the marble-...

Physics
create a graph with your data of rotational speed vs radius. independent variable goes on x axis. which is x axis and which is y axis out of radius and rotational speed

Physics
Can someone help me with this, i have started it but cant get it to work out. The higher the energy level occupied by an electron in the hydrogen atom, the larger the atom. The diameter of the atom is proportional to n2, where n=1 labels the lowest, or “ground” state, n=3 ...

Chemistry -Flame colors (check+help)
What are the characteristic flame color for sodium, potassium, barium, copper, strontium, and calcium? Explain why? Ans: i know the flame colours, but for the explain why, could the below be a possible answer? The characteristic flame color is due to the shift in the energy ...

Physics
A horse is trotting along pulling a sleigh through the snow. To move the sleigh, of mass m, straight ahead at a constant speed, the horse must pull with a force of magnitude T. What is the net force acting on the sleigh? What is the coefficient of kinetic friction between the ...

Physics
A horse is trotting along pulling a sleigh through the snow. To move the sleigh, of mass m, straight ahead at a constant speed, the horse must pull with a force of magnitude T. What is the net force acting on the sleigh? What is the coefficient of kinetic friction between the ...

Physics
A horse is trotting along pulling a sleigh through the snow. To move the sleigh, of mass m, straight ahead at a constant speed, the horse must pull with a force of magnitude T. What is the net force acting on the sleigh? What is the coefficient of kinetic friction between the ...

physics
In the (Figure 1) the coefficient of static friction between mass mA and the table is 0.42, whereas the coefficient of kinetic friction is 0.17. Ignore masses of the cord and the (frictionless) pulley. What minimum value of mA will keep the system from starting to move? What ...

Chemistry
delta G reaction = delta G products - delta G reactants. Hydrogen peroxide is used as a bleachin agent, a disinfectant and medicinally as a topical antibacterial agent. Hydrogen peroxide decomposes according to the reacton 2H^2O^2(l)-->2H^2O(l)+o^2(g) A. Given the standard ...

Physics
forty 2.0 kg blocks 20.0 cm thick are used to make a retaining wall in a backyard. Each row of the wall will contain 10 blocks. you may assume that the first block is the reference level. How much gravitational potential energy is stored in the wall when the blocks are set in ...

physics
a 70 kg box is pulled by a rope that exerts a 400 N force at angle of 30 degrees to the horizontal the leading coefficient of kinetic friction id 0.50. draw a diagram. draw a free body diagram . find the acceleration of the box.

physics
Find the coefficient of static and kinetic friction of a block on a table surface. The mass of the weight is 200g and with the friction block overall the mass is 0.3 kg. With a spring scale we found Fs to be 1N and Fk to be 0.8N. Draw free body diagram.

Physical Science
ok so i keep getting one wrong on a 4 question test and failing so can someone tell me what im getting wrong 1. What causes an electric current in a wire? A. Electric fields cause atoms to move in the wire. B. Electrons flow because of electrical attraction and repulsion. C. ...

fizik
Two shuffleboard disks of equal mass, one orange and the other yellow are involved in a perfectly elastic glancing collision. The yellow disk is initially at rest and is struck by the orange disk moving initially to the right at 7.00 ms"1. After the collision, the orange disk ...

physics repost
)An elevator is moving down with an acceleration of 1.40 m/s^2. A 14.5 kg block hangs from a spring balance fixed to the roof of the elevator. What is the apparent weight of the block? m*g+m*a 14.5*9.80+14.5*1.40 142.1+20.3 162.4 N 2)A 2.7 kg box is released on a horizontal ...

Physics -Conservation of Momentum-
1) A 1 kg mass moving at 1 m/s has a totally inelastic collision with a 0.7 kg mass. What is the speed of the resulting combined mass after the collision? 2) A cart of mass 1 kg moving at a speed of 0.5 m/s collides elastically with a cart of mass kg at rest. The speed of the ...

Physics -Conservation of Momentum-
1) A 1 kg mass moving at 1 m/s has a totally inelastic collision with a 0.7 kg mass. What is the speed of the resulting combined mass after the collision? 2) A cart of mass 1 kg moving at a speed of 0.5 m/s collides elastically with a cart of mass kg at rest. The speed of the ...

physical Science
A 1 kg object requires 10 N of force to lift it 5 m from the bottom of a well. (use g = 10 m/s2). The object is then dropped. What is the total energy when the object has fallen halfway down the well (2.5m)?

Chemistry
C2H2(g) + 2 H2(g)--> C2H6(g) Substance So (J/mol∙K) ∆Hºf (kJ/mol) C2H2(g 200.9 226.7 H2(g) 130.7 0 C2H6(g) -- -84.7 Bond Bond Energy (kJ/mol) C-C 347 C=C 611 C-H 414 H-H 436 If the value of the standard entropy change, ∆Sº for the reaction is -232.7 ...

Chemistry
C2H2(g) + 2 H2(g)--> C2H6(g) Substance So (J/mol∙K) ∆Hºf (kJ/mol) C2H2(g 200.9 226.7 H2(g) 130.7 0 C2H6(g) -- -84.7 Bond Bond Energy (kJ/mol) C-C 347 C=C 611 C-H 414 H-H 436 If the value of the standard entropy change, ∆Sº for the reaction is -232.7 ...

chemistry
C2H2(g) + 2 H2(g)--> C2H6(g) Substance So (J/mol∙K) ∆Hºf (kJ/mol) C2H2(g 200.9 226.7 H2(g) 130.7 0 C2H6(g) -- -84.7 Bond Bond Energy (kJ/mol) C-C 347 C=C 611 C-H 414 H-H 436 If the value of the standard entropy change, ∆Sº for the reaction is -232.7 ...

Physics
A youngster shoots a bottle cap up a 15.0° inclined board at 1.92 m/s. The cap slides in a straight line, slowing to 0.95 m/s after traveling some distance. If the coefficient of kinetic friction is 0.35, find that distance. Can someone please show me the steps to solving ...

Physics
1.)A force of 250 is just sufficient to start a 50 kg steel trunk moving across a wooden floor. Find the coefficient of static friction. 2.) compute the acceleration of the block sliding down a 30 deg inclined plane if the coefficient of kinetic friction is 0.20.

Physics
The Kelvin temperature of an object is T1 and the object radiates a certain amount of energy per second. The Kelvin temperature of the object is then increased to T2, and the object radiates 81 times as much energy per second as it radiated at the lower temperature. What is ...

Health
The National Weight Control Registry found in their research that those who had maintained a significant weight loss reported improvements in ________. A. Physical health and energy levels only B. Stress reduction and general health C. Physical health, energy levels, general ...

physics
A block is released on an inclined plane from a height of 1m. There is friction (static and kinetic =.4) and the mass of the block is 5 kg, the mass of the pulley is 1 kg and it has a radius of 5 cm. The slope of the incline is 30 degrees. Find the acceleration of the block as...

physics
A block of mass m = 5.4 kg is pulled up a θ = 24° incline as in the figure with a force of magnitude F = 35 N. (a) Find the acceleration of the block if the incline is frictionless. m/s2 (b) Find the acceleration of the block if the coefficient of kinetic friction ...

Physics
(a) calculate the energy in joules put out by a 9.0 V calculator battery that moves 3.0 C of charge through a handheld calculator after 1 hr of operation. (b) calculate the energy put out by a 12.0 V car battery that moves 1000 C of charge (as it may when starting the car's ...

Physics 1
Consider a simple pendulum of length 1.1 m with m = 2.9 kg. If the amplitude of the oscillation is 0.11 m (as measured along the circular arc along which it moves), what is the total mechanical energy of the oscillator? ____ Joules

physics
A boy pulls a bag of baseball bats across a ball field toward the parking lot. The bag of bats has a mass of 6.8 kg, and the boy exerts a horizontal force of 20 N on the bag. As a result, the bag accelerates from rest to a speed of 1.12 m/s in a distance of 5.4 m. Part A What ...

PHYSICS
A 6.00g bullet is fired horizontally into a 1.50kg wooden block resting on a horizontal surface. The coefficient of kinetic friction between block and surface is .30. the bullet remains embedded in the block, which is oserved to slide .25m along the surface before stopping. ...

Chemistry - check answers
1) Which element has the largest first ionization energy? A) Rb, B) Fr, C) K, D) Na, E) Mg Answer: E 2) Which has the highest electronegativity? A) Na, B) Cs, C) Si, D) Te, E) Cl Answer: E 3) In which of the following are the bonds arranged in order of increasing polarity? A) ...

Physics Hw Help Please
The Burj Khalifa in Dubai is the world\'s tallest building. The structure is 828 m (2,716.5 feet) and has more than 160 stories. A tourist is obviously using the elevator to reach their hotel room and after a long ride finally arrives at the correct floor where the tourist has...

physics
(a) A solar collector is 12.0% efficient in gathering solar energy and converting it to heat. If the average intensity of sunlight on one day is 700 W/m2, what area(m^2) should your collector have to gather energy at the rate of 150 W? (b) What is the maximum cost ($)of the ...

Physics
A CD has to rotate under the readout-laser with a constant linear velocity of 1.25 m/s. If the laser is at a position 3.2 cm from the center of the disk, what are the revolutions per minute (rpms) of the disk? ***Can someone please step me through the problem step by step?***

physics
a bus is moving downhill at a slope of 5 degree . at the moment when the speed of the bus is 30km/h,the driver spots a deer 30m ahead. he applies the brakes and comes to a stop. the is paralysed by fear and does not move.will the bus stops before reaching it or will it hit the...

Physics
This is a homework question and I have no idea what I'm doing wrong. A heavy sled is being pulled by two people as shown in the figure. The coefficient of static friction between the sled and the ground is ìs = 0.611, and the kinetic friction coefficient is ìk = 0.467. The ...

Physics
Two blocks are connected over a massless, frictionless pulley. The mass of block 2 is 8.00 kg, and the coefficient of kinetic friction between block 2 and the incline is 0.250. The angle θ of the incline is 28.0°. Block 2 slides down the incline at constant speed. What ...

chemistry
We encounter a large number of waves every day without realizing it. One such source is radio waves. A typical frequency for radio transmission is 680 kHz. How much energy does one mole of radio waves carry? X rays used by doctors to view bones are much more energetic than ...

physics
Which of the following summarizes Rutherford's model of the atom? Choose one answer. a. Electrons are embedded in a positive region of spherical dimension. b. Electrons revolve around the nucleus without emitting radiation. c. Electrons revolve around the nucleus like planets ...

Physics(Please help)
1) A box is sliding up an incline that makes an angle of 14.0 ° with respect to the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.176. The initial speed of the box at the bottom of the incline is 3.72 m/s. How far does the...

Physics
A small circular object with mass m and radius r has a moment of inertia given by I = cmr2. The object rolls without slipping along the track shown in the figure. The track ends with a ramp of height R = 3.0 m that launches the object vertically. The object starts from a ...

biochemistry
Suppose the concentration of glucose inside a cell is 0.1 mM and the cell is suspended in a glucose solution of 0.01 mM. What would be the free energy change involved in transporting 10?6 mole of glucose from the medium into the cell? Assume T= 37 ?C. ANSWER: 5.93�10?6 kJ ...

Physics
A disk with a mass of 13 kg, a diameter of 25 cm, and a thickness of 8 cm is mounted on a rough horizontal axle as shown on the left in the figure. (There is a friction force between the axle and the disk.) The disk is initially at rest. A constant force, F = 70 N,is applied ...

Biology
1. Are the third-order heterotrophs consumed by gungal decomposers? My guess:Yes? 2. Which of the following fixes atmospheric N2 (nitrogen gas)? A. photosynthesis B. symbiotic bacterianon the roots of legumes C. uv light D. decay organisms E. autotrophs My guess: B? 3. Which ...

Physics
A 50g bullet strikes a stationary 1.50kg block of wood paced on a horizontal surface just in front of the gun. The bullet becomes embedded in the block and the impact drives them a distance of 10m before they come to rest. If the coefficient of kinetic friction between the ...

Physics
for some reason I keep on getting 1.2 seconds for (b) and .86 m for (a) The back of the book has the same answers for (a) but has 1.5 seconds for (b) i do not see what I'm doing wrong. Can someone confirm that I'm wrong or right??? A blcok is given an intial speed of 3.0 m/s ...

physics
A basketball player 1.9 m tall wants to make a basket from a distance of 7.8 m. The hoop is at a height of 3.05 m.If he shoots the ball (from a height of 1.9 m) at a 23.5 angle, at what initial speed must he shoot the basketball so that it goes through the hoop without ...

physics
The finding that light in free space has one speed, and one speed only, is consistent with ____________________. A) the conservation of energy as shown by Maxwell.B) general relativity.C) Newton's laws of motion.D) electromagnetic induction. My book tells me it is A and D but ...

physics
if the weight of the block,W,is 2.5 kilogram,the coefficient of static friction,0.25,and the coefficient of kinetic friction,0.15,determine: (a) the force necessary to hold the block sliding down (b) the force necessary to pull the block up the plane with uniform speed

Physics-Please check my answer-I've been working o
If I went tubing with my little sister, and I have a larger mass, why would we both reach, in terms of energy, the bottom of the hill at the same time; Originally I thought because we would both be accerlerating at the same rate but that doesn't explain the energy part does it...

damped oscillator
How do I show mathematically that Q is equal to the following in a damped oscillator? The quality factor Q of a damped oscillator is defined as Q=2pi τ(tau) /T. Show mathematically that Q is equal to 2pi*)energy of oscillator/energy lost by oscillator over one period)

Chemistry
usinf the kinetic molecular theory, why does the gas pressure increase when volume of gas decreases at constant temperature?

Physics
A 100 N force is applied to a 50.0 kg crate resting on a level florr. The coeeficient of kinetic friction is 0.15. a. What is the acceleration of the crate?

physics
a 2.0kg object is pulled horizontally by a force of 6.3N along the floor where the coefficient of kinetic friction is o.24. what is the object acceleration

physics college
A billiard ball that is initially at rest is given a sharp blow by a cue stick. The force is horizontal and is applied at a distance h = 2R/3 below the centerline, The speed of the ball just after the blow is v0 and the coefficient of kinetic friction between the ball and the ...

physics
A small bead of mass m is carried by a circular hoop of radius r which rotates about a fixed vertical axis. Show how one might determine the angular speed w of the hoop by observing the angle theta which locates the bead. Theta is measured to the right of the vertical axis. ...

Physics
What is the rotational inertia of a solid iron disk of mass 45 kg, with a thickness of 3.44 cm and radius of 19.0 cm, about an axis through its center and perpendicular to it?

physics
why is static friction bigger than kinetic friction

physics
Question Part Points Submissions Used 1 2 –/1 –/2 0/3 0/3 Total –/3 A force of 12.8 N pulls horizontally on a 0.9 kg block that slides on a rough, horizontal surface. This block is connected by a horizontal string to a second block of mass m2 = 2.04 kg on the same ...

Physics
An object with charge qo = 1.5μC and mass 0.7 g starts from rest at the +6V equipotential line. Calculate its change in potential energy and speed when it reaches the +2V line.

Physics
An object with charge qo = 1.5μC and mass 0.7 g starts from rest at the +6V equipotential line. Calculate its change in potential energy and speed when it reaches the +2V line.

Physics
You throw a 238 g baseball straight up from a height of 1.73 m and it reaches a height of 13.2 m. Using conservation of energy, what minimum initial speed is needed to accomplish this?

PHYSICS work on a ramp!!!
How much work is it to push a box (mass 190 kg) up an incline (angle 16 degrees with the horizontal) that is 8.3 meters long, if the coefficient of kinetic friction between the box and the incline is 0.6? My doubt is how do I find force?

Maths lit grade 11
The registration fees for athletes in the different categories are as follow. Children: 10 - 14 =r 15,00 youth : 15 - 18 =r 20,00 adults : 19 years and older= r 30,00 distances: 1 yard= o,9140 1 mile= 1760 yards volume: 1 c= 0,264 us gallons time: 100 milliseconds= 1 second ...

college physics
A CD has to rotate under the readout-laser with a constant linear velocity of 1.25 m/s. If the laser is at a position 3.2 cm from the center of the disk, what are the revolutions per minute (rpms) of the disk? Can someone please help me solve this problem step by step. The ...

science
I don't know the answers to these two questions. Could someone please help me? Here is the diagram: h t t p: // tinypic. c o m /r/ng92ds/3 (take spaces out of link) 1. The greatest biomass and energy isrepresented by which organisms? a. grass and bacteria and mold b. tadpole ...

Science!
Which of the following correctly identifies active transport? (1 point) Transport proteins move large molecules from areas of low concentration to areas of high concentration using cellular energy. Transport proteins move large molecules from areas of low concentration to ...

Physical Science
1. A wave has a wavelength of 10 mm and a frequency of 5.0 hertz. What is its speed? A. 50 mm/s B. 50 hertz/s C. 2.0 mm/s D. 0.50 mm/s 2. Which type of mechanical wave needs a source of energy to produce it? A. a transverse wave B. a longitudinal wave C. a surface wave D. all ...

physics (please help)
Two identical but separate strings, with the same tension, carry sinusoidal waves with the same frequency. Wave A has an amplitude that is twice that of wave B and transmits energy at a rate that is _____ that of wave B. a)half b)twice c) one-fourth d)four times e) eight times...

Physics
A block of mass m = 5.9 kg is pulled up a è = 21° incline as in the figure with a force of magnitude F = 34 N. (a) Find the acceleration of the block if the incline is frictionless. 1 Your response differs from the correct answer by more than 10%. Double check your ...

Physics: Capacitance of Capacitor
Capacitor A and capacitor B both have the same voltage across their plates. However, the energy of capacitor A can melt m kilograms of ice at 0 °C, while the energy of capacitor B can boil away the same amount of water at 100 °C. The capacitance of capacitor A is 8.4 μF...

College Physics
Electronics and inhabitants of the International Space Station generate a significant amount of thermal energy that the station must get rid of. The only way that the station can exhaust thermal energy is by radiation, which it does using thin, 2.2 m-by-4.1 m panels that have ...

Physics
When U238 decays into Pb206 via alpha and beta decay, what are the byproducts of the decay? A) 8 alpha particles and 6 beta rays. B) 8 alpha particles, 6 electrons, 6 neutrinos, and energy. MY ANSWER . C) 16 alpha particles, 16 beta rays, and energy. D) 16 deuterons and 6 ...

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