Monday

July 28, 2014

July 28, 2014

Number of results: 27,930

**physics**

An unstable nucleus of mass 17x10^-27 kg, initially at rest, disintegrates into 3 particles. One of the particles, of mass 5x10^-27kg, moves along the positive y axis with a speed of 6.0x10^6m/s. Another particle, of mass 8.4x10^-27kg, moves along the positive x axis with a ...
*November 8, 2007 by Anonymous*

**lucille ball and colombia disaster**

some sites on lucy and also on that woman who was killed that was a teacher on that spaceshuttle
*January 7, 2008 by anonymous*

**physics repost**

A 1.00-kg ball is attached to a string of 0.50 m and swung in a horizontal circle with a velocity of 2.00 m/s. Find the centripetal acceleration. ac=v^2/r = 2.00^2/.50 = 8.0 m/s^2
*April 3, 2008 by Jon*

**science**

Will following through in your kick help the ball be more accurate opposed to stopping the momentum at point of contact>
*November 30, 2008 by Lucy Pirkle*

**grammar**

After sliding into second base Alex realized the outfielder had dropped the ball.
*January 22, 2009 by mm*

**Physics**

A baseball has a mass of 0.15 kg. A pitcher throws a 40 m/sec fastball which is caught by the catcher. What is the change in momentum of the ball?
*November 29, 2009 by Jon*

**physics**

how long does it take a softball to cross homeplate at 43 feet if the ball is going 65 miles per hour?
*September 12, 2010 by krystal*

**PHYSICS**

What is the reaction effect of the following action effects? a) Earth orbits the sun b) Ball accelerates downward Thank YOu.
*November 21, 2010 by JJ*

**PHYSICS**

What is the reaction effect of the following action effects? a) Earth orbits the sun b) Ball accelerates downward Thank YOu.
*November 21, 2010 by JJ*

**physics**

Stand on a 200 meter high building and, at noon, drop a ball. At what time does it hit the ground
*February 17, 2011 by R*

**Physics**

conical pendulum is formed by attaching a 0.200 ball to a 1.00 -long. It has a radius of 40.0cm . What is the tension in the string?
*March 1, 2011 by DAn*

**Physics**

conical pendulum is formed by attaching a 0.200 ball to a 1.00 -long. It has a radius of 40.0cm . What is the tension in the string?
*March 1, 2011 by DAn*

**Physics**

conical pendulum is formed by attaching a 0.200 ball to a 1.00 -long. It has a radius of 40.0cm . What is the tension in the string?
*March 1, 2011 by DAn*

**physics**

the constant velocity of a ball is (3x+2y)m/sec. find the distance traveled in the y direction in 2 seconds (x and y are unit vectors)?
*October 19, 2011 by marina*

**physics**

a basketball player achieves a hang time of 0.996 s in dunking the ball. What vertical height will he attain?
*October 21, 2011 by Anonymous*

**physics**

A 1.0kg ball initially at rest rolls down a plane at 35 degrees. pls i really need help
*November 10, 2011 by ted*

**chs**

If a pitcher threw a baseball straight up at 32 meters per second, what was the ball's velocity after 2.5 seconds?
*November 12, 2011 by ej*

**physics**

a pitches takes 0.10 seconds to throw a baseball, which leaves his hand at a velocity of 30m/s the ball's acceleration is?
*November 24, 2011 by ricajane*

**Physics. PLEASE HELP!!**

When a 0.35 kg baseball is hit, its velocitychanges from 21 m/s to -29.5 m/s. What is the magnitude of the impulse de-livered by the bat to the ball? Answer in units of N · s
*April 7, 2012 by Amber*

**physical science**

How much work does gravity do on a 0.140-kg ball falling from a height of 14.0 m? (neglect air resistance)
*September 9, 2012 by Liz*

**Physics**

A copper ball 2 cm in radius is heated in a furnace to 400 degree celsius. if its emissivity is 0.3, at what rate does it radiates?
*December 3, 2013 by Anonymous*

**Physics**

How much momentum does a .01 kg ping pong ball have if it is traveling at 25 miles/hour? (1.609km=1 mile)
*January 30, 2014 by Georgianna*

**Physics**

How much momentum does a .01 kg ping pong ball have if it is traveling at 25 miles/hour? (1.609km=1 mile)
*January 30, 2014 by Georgianna*

**Physics**

Can someone explain the magnitude and direction of the acceleration of a ball moving upward, downward,and at the highest point? a=g
*June 8, 2014 by Tasha*

**PHYSICS**

the following data were obtained for the position of a ball as it rolled along a straight track DISPLACEMENT (CM) TIME 2.90 0.60 7.40 2.10 11.00 3.30 22.70 7.20 31.10 10.00
*July 6, 2014 by Dulce*

**PHYSICS**

he following data were obtained for the position of a ball as it rolled along a straight track DISPLACEMENT (CM) 2.90 7.40 11.00 22.70 31.10 TIME 0.60 2.10 3.30 7.20 10.00
*July 6, 2014 by Dulce*

**AP Physic**

Hi there I am having a lot of trouble trying to figure out this homework problem and I really need help. This problem is dealing with wave motion and I do not know how to set up the formula to get the correct answer. Please help me and show some steps how to approach this ...
*January 16, 2010 by shylo*

**physics**

The figure shows an overhead view of a uniform 2.00-kg plastic rod of length 1.20 m on a very slick table. One end of the rod is attached to the table, and the rod is free to pivot about this point without friction. A disk of mass 36.0 g slides without friction toward the ...
*December 2, 2012 by HALP!!!*

**physics**

A student throws a water balloon vertically downward from the top of a building. The balloon leaves the thrower's hand with a speed of 15.5 What is its speed after falling for 2.80 ? How far does it fall in 2.80 ? What is the magnitude of its velocity after falling 10.6 ?
*September 14, 2008 by nate i dont know physics preston*

**physics**

can someone please take me step by step on this problem a swimers speed in still water is 1.35m/s if the current speed is 0.60m/s and the river is 106.68 meters wide. how long will it take to cross the river
*March 4, 2010 by jake*

**Physics**

A non-rotating cylindrical disk of moment of inertia I is dropped onto an identical disk rotating at angular speed w. Assuming no external torques, what is the final common angular speed of the two disks?
*April 21, 2010 by Aja *

**science**

A graph shows distance on the vertical axis and time on the horizontal axis. If the speed is steadily increasing, and becomes a curved line on the graph, could any part of the speed lone ever become perfectly vertical? Why or why not?
*April 27, 2010 by Judy*

**Math **

the kinetic energy of moving body ids directly praportional to its mass and the square of its speed.if the mass of a bullet is halved by what factor must its speed be increased to have the same kinetic energy as before?
*November 21, 2011 by rahul patel*

**Math**

An aeroplane needs to fly due east from city A to city B at a speed of 400km/hr. However a 50km/hr wind blows constantly from the north. In what direction must aeroplane head and at what speed must it travel?
*August 27, 2012 by Jeconiah*

**physics**

A cyclist is coasting at a steady speed of 17 but enters a muddy stretch where the effective coefficient of friction is 0.60. a)Will the cyclist emerge from the muddy stretch without having to pedal if the mud lasts for 23? b)What will be the speed upon emerging?
*October 7, 2012 by Anonymous*

**Physics **

A train is moving parallel and adjacent to a highway with a constant speed of 27 m/s. Initially a car is 41 m behind the train, traveling in the same direction as the train at 39 m/s and accelerating at 4 m/s 2 . What is the speed of the car just as it passes the train? Answer...
*November 4, 2012 by Savannah*

**physics **

A bird is ﬂying with a speed of 19.0 m/s over water when it accidentally drops a 2.50 kg ﬁsh. The acceleration of gravity is 9.81 m/s^2 If the altitude of the bird is 9.00 m and air resistance is disregarded, what is the speed of the ﬁsh when it hits the ...
*November 28, 2012 by kyle*

**Physics**

A truck driver travels 55 km in 1 hour. He then drives a speed of 35km/hr for 2 hrs. Next, he drives 175 km in 3 hrs. What was his average speed? Should i add up the total distance and total time taken then solve?
*March 25, 2013 by Ariel*

**Physics !!!!! HELP PLEASE**

A hand gun fires a 12.0 g bullet at a speed of 400 m/s. What is its kinetic energy? At what speed must a motorcycle of mass 173 kg move to have the same kinetic energy as the bullet? Express your answer in km/h.
*May 22, 2013 by Joeline*

**Math **

A private plane traveled from Seattle to a rugged wilderness at an average speed of 180 mph. The return trip speed s 225 mph. If the total travelling time was 7 hours, how far is Seattle from the wilderness
*March 17, 2014 by Trying to make it in life*

**Maths**

A police officer gathered data on the speeds, in kilometres per hour (km/h), of some cars as they drove down hill towards her car. The speed limit is 50 km/h. Analysis of the results showed that the speeds of the cars were normally distributed with a mean speed of 56 km/h and ...
*August 23, 2007 by kate*

**science**

a mass being spun horizontally on a string of radius 1.2 m makes 100 revolutions is 45s. a) find the speed of the mass b) find the centripetal acceleration of the mass. a) to find velocity would i use v = (2 pi r)/ T but I am not sure what the (T) period is. Is it 45s? b) ...
*November 2, 2006 by randy*

**Physics**

A vibrator in a ripple tank vibrates with a frequency of 3.0 Hz and an amplitude of 2.5 cm. The resulting waves travel away from the source with a speed of 2.5 cm/s, passing under various markers floating on the water. (a)In what direction(s) do the marker move? (b) With what ...
*November 27, 2012 by Raj Phys27/11*

**Physics**

A vibrator in a ripple tank vibrates with a frequency of 3.0 Hz and an amplitude of 2.5 cm. The resulting waves travel away from the source with a speed of 2.5 cm/s, passing under various markers floating on the water. (a)In what direction(s) do the marker move? (b) With what ...
*November 27, 2012 by Raju*

**Physics**

A vibrator in a ripple tank vibrates with a frequency of 3.0 Hz and an amplitude of 2.5 cm. The resulting waves travel away from the source with a speed of 2.5 cm/s, passing under various markers floating on the water. (a)In what direction(s) do the marker move? (b) With what ...
*November 27, 2012 by Raju*

**physics**

a boat that travels at a speed of 6.75 m/s in still water is to go directly across a river and back . the current flows at 0.50 m/s (a) at what angle(s) must the boat be steered. (b)How long does it take to make a round trip? (assume that the boats speed is constant at all ...
*January 1, 2008 by melissa*

**Physics**

A bicyclist on an old bike (combined mass: 96 kg) is rolling down (no pedaling or braking) a hill of height 103 m. Over the course of the 278 meters of downhill road, she encounters a constant friction force of 323 Newton. If her speed at the top of the hill is 7 m/s, what is...
*October 31, 2010 by Layla*

**Physics**

A car whose speed is 90.0 km/h (25 m/s) rounds a curve 180 m in radius that is properly banked for speed of 45 km/h (12.5 m/s). Find the minimum coefficient of friction between tires and road that will permit the car to make a turn. What will happen to the car in this case? My...
*August 15, 2012 by TJR*

**Chemistry**

A student conducts an experiment to determine the enthalpy of neutralization for phosphoric acid reacting with sodium hydroxide. The student combines 25.0 mL of equimolar solutions of acid and base, both having an initial temperature of 22.5 °C, in an open polystyrene ...
*November 6, 2011 by Chen*

**Chemistry**

A student conducts an experiment to determine the enthalpy of neutralization for phosphoric acid reacting with sodium hydroxide. The student combines 25.0 mL of equimolar solutions of acid and base, both having an initial temperature of 22.5 °C, in an open polystyrene ...
*November 6, 2011 by Chen*

**physics**

An arrow, starting from rest, leaves the bow with a speed of 16.5 m/s. If the average force exerted on the arrow by the bow were doubled, all else remaining the same, with what speed would the arrow leave the bow?
*September 25, 2010 by help*

**Physics**

A(n) 20.5 g bullet is shot into a(n) 6254 g wooden block standing on a frictionless surface.The block, with the bullet in it, acquires a speed of 1.64 m/s. Calculate the speed of the bullet before striking the block. Thank you
*December 10, 2012 by jason*

**Physics**

A(n) 20.5 g bullet is shot into a(n) 6254 g wooden block standing on a frictionless surface.The block, with the bullet in it, acquires a speed of 1.64 m/s. Calculate the speed of the bullet before striking the block. Thank you
*December 10, 2012 by jason*

**Physics**

A(n) 20.5 g bullet is shot into a(n) 6254 g wooden block standing on a frictionless surface.The block, with the bullet in it, acquires a speed of 1.64 m/s. Calculate the speed of the bullet before striking the block. Thank you
*December 10, 2012 by jason*

**Physics**

A proton and an electron enter perpendicular to the direction of the magnetic field. The speed of the proton is twice the speed of the electron. What is the ratio of the force experienced by the proton to the electron? Thanks for helping me out
*February 2, 2013 by fred*

**College Physics**

Which of the following statements is false? 1)The velocity of an object can change while maintaining a constant speed. 2)An object that maintains a constant speed must have zero acceleration. 3)An object that has a non-zero acceleration must have a changing velocity. 4)The ...
*October 4, 2010 by Bryce*

**physics**

A ruler stands vertically against a wall. It is given a tiny impulse at such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that . The ruler has mass 250 g and length 30 cm. Use m/s for the ...
*December 6, 2013 by juanpro*

**physics**

A wagon with a width of 2.4 m, moving at a speed of 15 m per second, was shot through by a bullet perpendicular to the movement of the wagon. The distance between the two bullet holes in the wagon’s walls is 6 cm. What is the speed of the bullet?
*August 17, 2011 by Mia*

**Physics**

A proton and an electron enter perpendicular to the direction of the magnetic field. The speed of the proton is twice the speed of the electron. What is the ratio of the force experienced by the proton to the electron? 1:2 1:3 2:1 3:1 I would think A, but I want to make sure...
*October 22, 2012 by Physics Failure*

**Physics-repost, sorry, I still don't understand :(**

A forearm with a mass of 1.2kg supports a ball with a mass of 5.44 kg. The forearm is 0.050m long; it's perpendicular to the arm is 0.35m long, the center of gravity is at 0.15m from the elbow. Find the force exerted by rhe biceps and the force on the elbow joint. I know this ...
*March 1, 2009 by Sukie*

**Physics**

ok so I have a question At the instatn a race began, a 57-kg sprinter was found to exert a force of 80 N on the starting lbock at 22 degrees with respect to the ground what was the horizontal acceleration of the sprinter? I got roughly 1.3 s^-2 m ok here's were i need some ...
*July 10, 2009 by Physics*

**Biomechanics**

XY coordinates of the right toe of a soccer kick performer are Frame 20: (2.62, 0.99) Frame 14: (2,34, 0.16). How far did the toe travel in the upward direction between frames 14 and 20? How fast did the toe travel in upward direction between frames 14 and 20? How fast did the...
*October 8, 2011 by Esther*

**physics**

In downhill speed skiing a skier is retarded by both the air drag force on the body and the kinetic frictional force on the skis. Suppose the slope angle is è = 37.5°, the snow is dry snow with a coefficient of kinetic friction ìk = 0.0400, the mass of the skier and equipment ...
*December 13, 2008 by johnny*

**Calculus/ Optimization**

A truck driver, on assignment from the owner of the truck is to drive on a 300 mile stretch of highway at a constant speed of v miles per hour. According to road signs, the minimum speed allowed is 55 miles per hour and the speed limit is 70 miles per hour. The cost of gas on ...
*March 24, 2013 by Marto*

**Algebra II**

A projectile is launched from a platform 10 meters above ground with an initial upward velocity of 20 meters per second. Find the time when the projectile has returned to the initial height launch, find the time the projectile hits the ground, find the time when the projectile...
*December 8, 2011 by Julia *

**physics**

A(n) 3.91 kg sphere makes a perfectly inelastic collision with a second sphere that is initially at rest. The composite system moves with a speed equal to one-third the original speed of the 3.91 kg sphere. What is the mass of the second sphere? Answer in units of kg
*January 30, 2012 by david*

**physics**

Entrance and exit ramps for freeways are often circular stretches of road. As you go around one at a constant speed, you will experience a constant acceleration. Suppose you drive through an entrance ramp at a modest speed and your acceleration is 3.0 {\rm m}/{\rm s}^{2}
*February 1, 2012 by morrow*

**Physics - still confused -Please help**

In 9.7 s a fisherman winds 2.1 m of fishing line onto a reel whose radius is 30 cm (assumed to be constant as an approximation). The line is reeled in at constant speed. Determine the angular speed of the reel in rad/s. Thank you.
*February 25, 2012 by Nilan*

**physics**

A bullet traveling horizontally at a speed of 350 hits a board perpendicular to its surface, passes through and emerges on the other side at a speed of 230 . If the board is 3.80 thick, how long does the bullet take to pass through it?
*September 29, 2012 by sammy*

**Physics 1**

A horizontal force of 30 N pulls a block of mass 2.5 kg across a level floor. The coefficient of kinetic friction between the block and the floor is μK = 0.25. If the block begins with a speed of 2.0 m/s and is pulled for a distance of 18 m, what is the final speed of the...
*October 8, 2012 by John *

**Repost-Physics 1**

A horizontal force of 30 N pulls a block of mass 2.5 kg across a level floor. The coefficient of kinetic friction between the block and the floor is ìK = 0.25. If the block begins with a speed of 2.0 m/s and is pulled for a distance of 18 m, what is the final speed of the ...
*October 9, 2012 by John*

**math**

The stopping distance D of a car after the brakes have been applied varies directly as the square of the speed s. A certain car traveling at 70 mi/h can stop in 343 ft. What is the maximum speed it can be traveling if it needs to stop in 160 ft?
*February 26, 2013 by El*

**physics**

A airplane is approaching you at a speed of 360km/h. If you measure the pitch of its approaching engines to be 512 Hz, what must be the actual frequency of the sound of the engines? The speed of sound in air is 345m/s answer is 364Hz please explain steps?
*July 17, 2013 by justin*

**Physics**

A truck on a straight road starts from rest and accelerates at 3.0 m/s2 until it reaches a speed of 18.1 m/s. Then the truck travels for 24.5 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.7 s. (a) How long is the ...
*September 10, 2013 by Kelsey*

**Physics**

A train is moving parallel and adjacent to a highway with a constant speed of 27 m/s. Ini- tially a car is 60 m behind the train, traveling in the same direction as the train at 41 m/s and accelerating at 5 m/s2. What is the speed of the car just as it passes the train? Answer...
*October 16, 2013 by Julia*

**Physics**

A train is moving parallel and adjacent to a highway with a constant speed of 27 m/s. Ini- tially a car is 29 m behind the train, traveling in the same direction as the train at 38 m/s and accelerating at 2 m/s2. What is the speed of the car just as it passes the train? Answer...
*February 20, 2014 by Karen*

**physics**

A girl throws a water-filled balloon at an angle of 50.0∘^\circ above the horizontal with a speed of 12.0m/s{\rm m}/{\rm s} . The horizontal component of the balloon's velocity is directed toward a car that is approaching the girl at a constant speed of 8.00m/s{\rm m}/{\...
*May 17, 2014 by joe*

**physics**

A girl throws a water-filled balloon at an angle of 50.0∘^\circ above the horizontal with a speed of 12.0m/s{\rm m}/{\rm s} . The horizontal component of the balloon's velocity is directed toward a car that is approaching the girl at a constant speed of 8.00m/s{\rm m}/{\...
*May 17, 2014 by joe*

**physics**

A motor boat whose speed is 2.6 m/s in still water, needs to point upstream at an angle of 28.5 in order to travel straight across the river. Calculate the speed of the current and the resultant velocity of the boat across the river.
*June 24, 2014 by jane*

**physics**

a bullet travelling horizontally at a speed of 350 m/s hits a board perpendicular to the surface, passes through it and emerges on the other side at a speed of 210 m/s . if the board is 4.00 cm thick, how long does the bullet takes to pass through it ?
*June 30, 2014 by nel ervin*

**Gr. 12 Physics**

A pilot must fly his plane to a town which is 200km from his starting point in a direction 30degrees N of E. He must make the trip in 1/2 h. An 80km/h wind blows in a direction 30degrees E of S. Find the speed of the plane relative to air. I found the speed of the plane ...
*September 30, 2012 by Myles*

**math**

A boat travels down the river in 2.6 hours. The return trip up river takes 3.9 hours. A one way trip down or up river is a distance of 21 miles. If the boat is traveling at maximum speed, what is the boats speed measured in waters with no current? You need to use systems to ...
*December 7, 2012 by Anonymous*

**math**

A boat travels down the river in 2.8 hours. The return trip up river takes 3.8 hours. A one way trip down or up river is a distance of 24 miles. If the boat is traveling at maximum speed, what is the boats speed measured in waters with no current? You need to use systems to ...
*December 9, 2012 by Anonymous*

**Physics**

A 0.25-kg block oscillates on the end of the spring with a spring constant of 200 N/m. If the oscillation is started by elongating the spring 0.15 m and giving the block a speed of 3.0 m/s, then the maximum speed of the block is A3.7 m/s B0.18 m/s C5.2 m/s D13 m/s E0.13 m/s
*June 16, 2012 by Huhu. *

**math**

an airplane flew with the wind for 30 minutes and returned the same distance in 45 minutes. If the cruising speed of the airplane was 320 mph what was the speed of the wind ?
*September 23, 2010 by s*

**AP PHYSICS**

the height of the upper falls at Yellowstone falls is 33.2m. when the water reaches the botton of the falls, its speed is 25.8 m/s. neglecting air resistance, what is the speed of the water at the to of te falls.
*November 15, 2010 by paul*

**physics**

we know that the speed of light in a vacuum is 3.0 x 10^8 m/s (18,000 mi/sec). If light travels through thick plastic with a speed of 1.75 x 10^8 m/s, what is the index of refraction through plastic?
*October 24, 2011 by Jenna*

**physics**

we know that the speed of light in a vacuum is 3.0 x 10^8 m/s (18,000 mi/sec). If light travels through thick plastic with a speed of 1.75 x 10^8 m/s, what is the index of refraction through plastic?
*October 24, 2011 by Jenna*

**chemistry**

If, at a particular temperature, the average speed of CH4 molecules is 1000 mine/hr, what would be the average speed of CO2 molecules at the same temperature?
*November 26, 2012 by marianne*

**chemistry**

If, at a particular temperature, the average speed of CH4 molecules is 1000 mine/hr, what would be the average speed of CO2 molecules at the same temperature?
*November 26, 2012 by marianne*

**chemistry**

If, at a particular temperature, the average speed of CH4 molecules is 1000 mine/hr, what would be the average speed of CO2 molecules at the same temperature?
*November 26, 2012 by marianne*

**physics 101**

At what temperature is the root mean square speed of oxygen molecules equal to the root mean square speed of hydrogen at 27 degrees?
*January 9, 2013 by abiod86*

**science**

the speed of sound in air is given for still air. how would wind affect the speed? what would happen if you shouted into the wind?
*July 12, 2014 by duane*

**Physics true false**

true false The speed of a particle is always positive. True False The average speed of a particle is equal to the magnitude of its average velocity. True False The acceleration of a particle can be non-zero when its speed is constant. True False When the average velocity of a ...
*February 26, 2013 by Robin *

**Science**

When you are describing the rate that a race car goes around a track, should you use the term speed or velocity to describe the motion? Can the velocity of the car change without changing the average speed of the car? Please answer in 100 words!
*February 23, 2008 by Jennifer*

**College Physics**

A 3400 kg open railroad car coasts along with a constant speed of 7.50 m/s on a level track. Snow begins to fall vertically and fills the car at a rate of 5.10 kg/min.Ignoring friction with the tracks, what is the speed of the car after 85.0 min ?
*March 14, 2010 by Sandy*

**PHYSICS**

A .01kg bullet traveling at 800m/s hits a disk with a radius of R=.1m at R/2 and leaves with a speed of 400m/s. what is the angular speed of the disk right after? (omega) I used conservation of momentum and the rotational inertia for a disk and found omega to be 8rad/s. Is ...
*November 30, 2010 by Taylor*

**physics**

A race car is making a U-turn at constant speed. The coefficient of friction between the tires and the track is μs = 1.0. If the radius of the curve is 40 m, what is the maximum speed at which the car can turn without sliding? Assume that the car is performing uniform ...
*March 19, 2011 by HELP!!!!*

**Physics**

Suppose Fuzzy, a quantum mechanical duck, lives in a world in which h = 2 J.s. Fuzzy has a mass of 2.0 kg and is initially known to be within a region 1.0 m wide. a) What is the minimum uncertainty in his speed? b) Assuming this uncertainty in speed to prevail for 5.0 ...
*April 7, 2011 by Abby*

**Physics**

Suppose Fuzzy, a quantum mechanical duck, lives in a world in which h = 2π J.s. Fuzzy has a mass of 2.0 kg and is initially known to be within a region 1.0 m wide. a) What is the minimum uncertainty in his speed? b) Assuming this uncertainty in speed to prevail for 5.0 s...
*April 7, 2011 by Abby*

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