Thursday
December 18, 2014

Search: Phyiscs - Electro static

Number of results: 1,470

Phyiscs - Electro static
Particles 1 and 2 of charge q1 = q2 = +3.20 x 10-19 C are on a y axis at distance d = 22.0 cm from the origin. Particle 3 of charge q3 = +9.60 x 10-19 C is moved gradually along the x axis from x = 0 to x = +5.0 m. At what value of x will the magnitude of the electrostatic ...
April 2, 2011 by will

Science
I need to make a generator. The really small ones that can light up a very tiny lightbulb. Basically, I need horse shoe magnets, I know that bit, bet im having trouble how to create the coil and wrap the magents, and how to build it. How do I make a coil? I dont want to buy ...
January 11, 2007 by Gina

Chemistry
What is the electro-negativity of NO ? (Nitric oxide)
October 28, 2013 by Lala

phyiscs
1.5*10power13
October 29, 2010 by Anjali

phyiscs
In a nuclear power plant, _
April 4, 2013 by Anonymous

phyiscs
the density of mercury is 13.6gm .Find the volume of 0.3 of hg
November 13, 2012 by safel mma

Phyiscs
two examples of everyday devices of relativity? besides a gps?
November 29, 2009 by Jordan

physics
IP You want to nail a 2.4kg- board onto the wall of a barn. To position the board before nailing, you push it against the wall with a horizontal force to keep it from sliding to the ground What happens to the force of static friction if you push against the wall with a force ...
November 11, 2010 by mathhelp

physics
A)Calculate the wavelength of a 5.0kg bowling ball moving at 7.5m/s b)an electro with a mass of 9.11 x 10^-13kg moving at 5.9 x 10^6 m/s.
December 3, 2012 by chanty

Physics (Static Friction)
When you take your 1300-kg car out for a spin, you go around a corner of radius 56.9 m with a speed of 15.8 m/s. The coefficient of static friction between the car and the road is 0.75. Assuming your car doesn't skid, what is the force exerted on it by static friction? I got ...
July 28, 2010 by David

physical science
when a photon of energy hf elects an electro violently from an atom. How is this energy distribute in the process me electing electron?
March 13, 2012 by euvin

Electro 1
Two resistors Ra= 1.95 ohms and Rb = 0.05 ohms are connected in parallel and take a total of 50A. What is the current trough each resistor.
July 7, 2014 by Tristan

Phyiscs
if the brakes of an automobile are applied from 70km/h to 35km/h, how many meters does the car travel during this deceleration?
July 11, 2014 by Neil

physics
Drag-race tires in contact with an asphalt surface have a very high coefficient of static fric.tion. Assuming a constant acceleration and no slipping of tires, estimate the coefficient of static friction needed for a drag racer to cover 2.1 km in 8 s, starting from rest. ...
February 21, 2014 by ryan

PHYSICS
6. Drag-race tires in contact with an asphalt surface have a very high coefficient of static friction. Assuming a constant acceleration and no slipping of tires, estimate the coefficient of static friction needed for a drag racer to cover 2.1 km in 8 s, starting from rest. ...
February 23, 2014 by SHAWN

Phyiscs
A wooden box with a mass of 10.0kg rests on a ramp that is inclined at angle of 25 degrees to the horizontal. A rope attached to the box runs parallel to the ramp and then passes over a frictionless pulley. A bucket with a mass of m hangs from the end of the rope. The ...
February 6, 2014 by Lupita

Phyiscs
An autographed baseball rolls off a 0.5m high desk and strikes the floor 0.4m away . How fast was the ball traveling when it hit ?
December 17, 2014 by Denise

phyiscs
A car has an acceleration of 0.5g. calculate the time for the car to accelerate from 10m/s to 25m/s
October 15, 2013 by abdul

PHYSICS
Whats the difference between the formulas for kinetic and static friction. Kinetic: Ff= ukFn Static: Ff= usFn Are the 'f' and the 'n' the mass of the object? Are the 'k' and the 's' just the
April 16, 2009 by Lena

Phyiscs
A 40,000 kg jet has a force of 3.9×10^3 newtons. what is the acceleration of the jet
April 3, 2013 by Nate

Physics
A person, sunbathing on a warm day, is lying horizontally on the deck of a boat. Her mass is 59.6 kg, and the coefficient of static friction between the deck and her is 0.696. Assume that she is moving horizontally, and that the static frictional force is the only force acting...
December 19, 2012 by Sadie

phyiscs
if 0.4 force is required to pull a body attaching to spring 0.1m from the position of equality find the spring constant?
October 29, 2010 by madiha

phyiscs
if 0.4 force is required to pull a body attaching to spring 0.1m from the position of equality find the spring constant?
October 29, 2010 by madiha

physics
A solid sphere of uniform density starts from rest and rolls without slipping down an inclined plane with angle θ = 30o. The sphere has mass M = 8 kg and radius R = 0.19 m . The coefficient of static friction between the sphere and the plane is μ = 0.64. What is the ...
November 6, 2014 by stewart

PHyiscs
A HELICOPTER hovering above a forest fire dumps a large bucket of water. How far does the water fall in the first 3.0 seconds t=3.0s
September 24, 2010 by ANON

Physics - Friction
**Especially part a) A person, sunbathing on a warm day, is lying horizontally on the deck of a boat. Her mass is 54.6 kg, and the coefficient of static friction between the deck and her is 0.683. Assume that she is moving horizontally, and that the static frictional force is ...
September 27, 2013 by Kir

physics
An object in static equilibrium has a coefficient of static friction as 0.110. If the normal force acting on the object is 95.0 newtons, what is the mass of the object?
May 21, 2013 by ksg

Health
3) Becky and Tremaine are finishing up their workout on the treadmill at the local gym. Select the best cool-down sequence for them to use. Strength exercises, static stretching, walking in place Static stretching, walking in place, strength exercises Walking in place, static ...
October 28, 2013 by Anonymous

reading what does this mean?
Those members will create a "page" in a characterization book entitled "Two Kinds." Each page will present a character, character terms specific to this character, a graphic image and text suppot that "proves" each character term that has been assigned. all of mine have to do...
November 23, 2013 by anonymous

Electro 1
A 6 ohms load is connected to a 119.6volts source through a pair of 0.25 ohms conductors. calculate a) the load current and voltage. b) the voltage drop in the wires.
July 7, 2014 by Tristan

Physics
What is meant by a positive static charge and a negative static charge?
November 19, 2007 by Jess

college phyiscs
A car starts from rest on a curve with a radius of 160 m and accelerates at 1.80 m/s^2. How many revolutions will the car have gone through when the magnitude of its total acceleration is 2.20 m/s^2?
October 11, 2009 by Amanda

Chemistry
How is polonium-210 used in anti-static products? Why is its presence in commercial products (eg. anti-static hair brushes) a concern?
February 15, 2009 by Amanda

Physics
the only part i cant figure out is the max static friction force that acts on the block. please help show me how to find it Suppose a block with mass 2.00 kg is resting on a ramp. If the coefficient of static friction between the block and the ramp is 0.320, what maximum angle...
May 21, 2011 by sarah

Grade 6 Science
Describe a way you can become a victim of a static electric shock. Explain what caused the static electric shock.
February 11, 2012 by Ms.Sue PLZ help

Grade 6 Science
Describe a way you can become a victim of a static electric shock. Explain what caused the static electric shock.
February 11, 2012 by Sameer I NEED HELP ASAP

phyiscs
What is the spring constant of a spring that stretches 2.00 cm when a mass of 0.600 kg is suspended from it? Answer i know the answer is 295 n/m but im nto sure how they got to it,
January 15, 2013 by v

phyiscs repost 2
Calculate the sound level in decibels of a sound wave that has an intensity of 2.25 ĩW/m2 For this question don't I use B=log10(I/IO) So it would be B=log10(2.25/1.0e-12) right?
April 19, 2008 by chris adison

Physics
A person pushes on a 62-kg refrigerator with a horizontal force of -256 N; the minus sign indicates that the force points in the −x direction. The coefficient of static friction is 0.61. (a) If the refrigerator does not move, what are the magnitude and direction of the ...
September 27, 2011 by Natalie

Physics
When you take your 1200 kg car out for a spin, you go around a corner of radius 51 m with a speed of 12 m/s. The coefficient of static friction between the car and the road is 0.88. Assuming your car doesn't skid, what is the force exerted on it by static friction?
March 2, 2010 by Abby

physics
When you take your 1000-kg car out for a spin, you go around a corner of radius 57 m with a speed of 11 m/s. The coefficient of static friction between the car and the road is 0.88. Assuming your car doesn't skid, what is the force exerted on it by static friction?
March 6, 2011 by Randy

Physics
When you take your 1000- car out for a spin, you go around a corner of radius 57 with a speed of 19 . The coefficient of static friction between the car and the road is 0.88. Assuming your car doesn't skid, what is the force exerted on it by static friction?
November 3, 2011 by Chris

physics
When you take your 1300-kg car out for a spin, you go around a corner of radius 57.7 m with a speed of 16.5 m/s. The coefficient of static friction between the car and the road is 0.93. Assuming your car doesn't skid, what is the force exerted on it by static friction?
April 12, 2012 by Anonymous

physics
When you take your 1200 kg car out for a spin, you go around a corner of radius 54.5 m with a speed of 16.2 m/s. The coefficient of static friction between the car and the road is 0.95. Assuming your car doesn't skid, what is the force exerted on it by static friction?
October 12, 2012 by Anonymous

circular motion
When you take your 1300-kg car out for a spin, you go around a corner of radius 57.7 m with a speed of 16.5 m/s. The coefficient of static friction between the car and the road is 0.93. Assuming your car doesn't skid, what is the force exerted on it by static friction?
April 12, 2012 by Anonymous

physics
A large block P executes horizontal simple harmonic motion as it slides across a frictionless surface with a frequency f = 1.7 Hz. Block B rests on it, as shown in the figure, and the coefficient of static friction between the two is ės=0.64. (b) What is the maximum force of ...
November 26, 2012 by Anonymous

physics
A large block P executes horizontal simple harmonic motion as it slides across a frictionless surface with a frequency f = 1.7 Hz. Block B rests on it, as shown in the figure, and the coefficient of static friction between the two is ės=0.64. (b) What is the maximum force of ...
November 28, 2012 by Anonymous

Physics with Calculus
The system shown in the figure is in static equilibrium. The rod of length L and mass M is held in an unpright position. The top of the rod is tied to a fixed vertical surface by a string, and a force F is applied at the midpoint of the rod. The coefficient of static friction ...
November 8, 2014 by Rico

langauge arts - mr. sue help!!
25. Select one story from the unit and identify the dynamic and static characters. For each character, identify why you labeled the character as either dynamic or static. (10 points)
January 28, 2013 by diamond

Physics
When you take your 1300-kg car out for a spin, you go around a corner of radius 57.8 m with a speed of 15.2 m/s. The coefficient of static friction between the car and the road is 0.82. Assuming your car doesn't skid, what is the force exerted on it by static friction? Please ...
October 16, 2012 by Alyssa

physics
A 2.0kg box rests on a plank that is inclined at an angle of 65° above the horizontal. The upper end of the box is attached to a spring with a force constant of 25 N/m. If the coefficient of static friction between the box and the plank is 0.17, what is the maximum amount the ...
May 21, 2007 by micole

physics
"An unbaked curve has a radius of curvature of 75m. On a winter day, with snow on the road, the coefficient of static friction between the tires of the car and the road is .23. What is the maximum speed with which the care can safely negotiate the cure?" r=75 and static ...
October 17, 2010 by Anonymous

phyiscs
A stone is thrown horizontaly from the top of a 25.00-m cliff. The stone lands at a distance of 40.00 m from the edge of the cliff. What is the horizontal velocity of the stone?
October 22, 2010 by ashlee

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

Phyiscs
A hollow copper tube (diameter = 4.01 cm) is sealed at one end and loaded with lead shot to give a total mass of 0.218 kg. When the tube is floated in pure water, what is the depth, z, of its bottom end?
April 3, 2014 by Jason

physics
A strong electromagnet produces a uniform field of 1.31 T over a cross-sectional area of 0.195 m2. A coil having 245 turns with a total resistance of 16 is placed around the electro- magnet, and the current in the electromagnet is turned off, reaching zero in 19.3 ms. What ...
March 6, 2013 by Anonymous

phyiscs
Many kayaks are made of plastics and other composite materials that are denser than water. How are such kayaks able to float in water? Does the kayak displace water? What exactly is Archimedes's Principle?
May 8, 2007 by Anonymous

Phyiscs
A man claims he can safely hold on to a 9.7-kg child in a head-on collision with a relative speed of 112-mi/h lasting for 0.12 s as long as he has his seat belt on. (a) Find the magnitude of the average force needed to hold onto the child. HELP
November 25, 2009 by Rick

phyiscs
A bolt is dropped from a bridge under construction, falling 81 m to the valley below the bridge. (a) How much time does it take to pass through the last 28 % of its fall? What is its speed (b) when it begins that last 28 % of its fall and (c) just before it reaches the ground?
September 12, 2013 by kristy

physics
A block at rest. The coefficients of static and kinetic friction are .75(Static) and .64(Kinetic). The acceleration of gravity is 9.8m/s^2 and the mass is 46kg. I've solved for the frictional force which is, 252.0841609N. Though what is the largest angle which the incline can ...
December 14, 2014 by allan

Chemistry
One of the lines in the spectrum of a mercury vapor lamp has a wave length of 254nm. What is the energy, in kj/mol, of this electro magnetic radiation. The work I have done: (6.626 x 10^-34 x 3.0 x 10^8) all divided by (254 x 10^-9.) The answer I calculated is 7.82 x 10^-19. ...
July 11, 2010 by Casey

phyiscs
Why is an antenna designed to be one-half of the wavelength of the wave it is supposed to receive? In my book all it says is that the voltage is larger when the antenna is 1/2 the wavelength of the wave.
May 29, 2009 by sally

Physics
A 3.66 kg block is placed on an inclined surface that makes an angle of 18.5° relative to horizontal. The coefficients of static and kinetic friction between the block and surface are 0.534 and 0.239, respectively. The block remains at rest when released. What is the magnitude...
May 10, 2012 by Anonymous

Phyiscs
A rock is tossed straight up with a velocity of 33.9 m/s. When it returns, it falls into a hole 11.9 m deep. What is the rock's velocity as it hits the bottom of the hole?
October 4, 2010 by Em

phyiscs
The height of a helicopter above the ground is given by h = 2.90t3, where h is in meters and t is in seconds. At t = 1.75 s, the helicopter releases a small mailbag. How long after its release does the mailbag reach the ground?
September 19, 2011 by fayez

physics 3
Static and Kinetic Friction: A 10 kg crate is at rest on a horizontal table (s =0.8, k =0.4). Then various amounts of horizontal pushing force are applied to it. a.) The largest pushing force that can be applied before the crate starts moving is of size: N b.)-d.) If the ...
September 23, 2008 by kelsey

Physics
he weight of the block in the drawing is 77.0 N. The coefficient of static friction between the block and the vertical wall is 0.490. (a) What minimum magnitude of the force is required to prevent the block from sliding down the wall? (Hint: The static frictional force exerted...
November 7, 2013 by Samantha

physics
A 2000 kg car negotiates a curve of radius 40.0m on a level road. The static friction coefficient between the tires and the pavement is 0.7. Calculate the maximum force of static friction for the car and the maximum speed with which it will be able to negotiate the curve.
October 29, 2007 by johnny

Physics
Which of the following surfaces has the largest amount of static friction against your skin? Which one has the highest coefficient of static friction against your skin? Select one: a. sandpaper b. ice c. wax paper d. A Teflon coated sheet.
September 22, 2013 by Kelsey

Physics
If a block of mass 10.0 kg rests on a horizontal surface, and the coefficient of static friction is 0.300, what is the maximum static friction that can act on the block? If you could walk me step by step on completing this problem, I would be extremely grateful and it would be...
September 21, 2014 by Matt

physics
A 1,660 kg car is parked on a hill with a slope of 8.0°. Its brakes and transmission are locked in position to keep the car from rolling. The coefficient of static friction of the rubber tires on the asphalt road is 0.14. What is the force of static friction between the tires ...
November 6, 2012 by anon

Physics
If you try to push an object that is 10 times heavier than you would there be static or kinetic friction? ( the heavy object doesn't move if even you use force) -I know that there is no kinetic friction because the object is not moving. I am not sure about static friction.
June 24, 2011 by Susan

Electronics
Here we examine noise in a digital channel between an AND gate and an inverter shown in Figure 16. The channel has a length of D=30m and noise is added in at the rate of 0.6Vm. To correct for that noise, we introduce non-inverting buffers into the channel. The purpose of a ...
May 3, 2013 by AmmanJordan

Physics
A crate of potatoes of mass 23.0 kg is on a ramp with angle of incline 30° to the horizontal. The coefficients of friction are μs = 0.78 and μk = 0.35. Find the frictional force (magnitude and direction) on the crate if the crate is at rest. I don't understand why I ...
September 23, 2012 by Alyssa

Science
Inclination angle of 38.0 degrees with respect to the horizontal. Suppose a truck on a street, for the truck to remain at rest, a static friction must exist. If an additional force with a magnitude equal to one-fourth the weight of the truck is applied uphill in order to hold ...
March 24, 2011 by Taylor

phyiscs
A uniform plank of length 4.5 m and weight 233 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 454 N walk on the overhanging part of the plank before it just begins to tip?
November 19, 2010 by jason

Science
Hello I have an exam coming and my question is : Why do we sometimes have a tiny electical current ( spark ) when we take our sweater off because of the shirt and jacket rubbing each other , the negative charges will have static electricity But for an electrical current , it ...
April 30, 2007 by Veronica

Phyiscs
A 5.00g lead bullet is fired into a wooden fence post. The initial speed of the bullet is 250m/s, and when it comes to rest, half its kinetic energy goes into heating bullet. How much does the bullet's temperature increase?
November 25, 2012 by noname

physics
a) Find the magnitude of the electrostatic force between 2 negative charges seperated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and electrostatic force. Help with ...
May 19, 2011 by Said

Physics(Help! Help!! Help!!!)
a) Find the magnitude of the electrostatic force between 2 negative charges seperated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and electrostatic force. (Help with ...
May 20, 2011 by Said Help

Physics(Help! Help!! Help!!!)
a) Find the magnitude of the electrostatic force between 2 negative charges seperated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and electrostatic force. (Help with ...
May 20, 2011 by Said Help

Physics(Help! Help!! Help!!!)
a) Find the magnitude of the electrostatic force between 2 negative charges seperated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and electrostatic force. (Help with ...
May 20, 2011 by Said Help

Physics(Help! Help!! Help!!!)
a) Find the magnitude of the electrostatic force between 2 negative charges seperated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and electrostatic force. (Help with ...
May 20, 2011 by Said Help

Physics(Help! Help!! Help!!!)
a) Find the magnitude of the electrostatic force between 2 negative charges seperated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and electrostatic force. (Help with ...
May 20, 2011 by Said Help

physics(urgent help)
a) Find the magnitude of the electrostatic force between 2 negative charges seperated by a distance of 1augustro. b)what is the magnitude of gravit'l force between the negetive charges (electro)? c) determine the ratio of the gravt'l force and electrostatic force. ((Help with ...
May 20, 2011 by Said Help

phyiscs
Two persons watch the same object move john says that it accelerate straight downward, but Samantha claims that it falls Along curved path.describe the conditions under which each person would be reporting correctly what they see. Thanks and please please please answer this ...
April 1, 2011 by tim

Physics
Consider a car is heading down a 5.5° slope (one that makes an angle of 5.5° with the horizontal) under the following road conditions. You may assume that the weight of the car is evenly distributed on all four tires and that the coefficient of static friction is involved—that...
February 21, 2014 by Maura

physics
A 3.0 m long ladder of weight 98. N leans against a frictionless wall at an angle of 60.° with respect to the horizontal. The coefficient of static friction between the ground and the ladder is ĩs=0.45. If the ladder is not sliding, the magnitude of the force of static ...
January 11, 2011 by noreen

physics
The coefficient of static friction between the tires of a car and a horizontal road is 0.515. As the car brakes, what is the magnitude of the maximum acceleration of the car? Assume the net force on the car is the maximum static friction force.
February 5, 2010 by Kevin

phyiscs
what is the derivative of velocity squared? i know that the derivative of regular velocity is acceleration, but what about velocity squared? thank you very much!
May 19, 2011 by physics

Static Fricition
An object of mass 2k is placed on the edge of the floor of a merry go round of radius 4 meters. The coefficient of static friction is 0.4 for the floor and the object. 1.How much work (in joules) is done on the object by the static frictional force to get the object up to ...
March 13, 2012 by Jarrett

Phyiscs
A woman is standing on the middle of a ladder that leans up against a building, with an angle of 65 degrees from the ground. The wall is very slippery and the ladder is very light. What is the minimum coefficient of friction needed between the ground and the ladder so that the...
April 27, 2011 by Anonymous

Phyiscs
A satellite circles the earth in an orbit whose radius is 2.07 times the earth's radius. The earth's mass is 5.98 x 1024 kg, and its radius is 6.38 x 106 m. What is the period of the satellite?
June 30, 2013 by Justin S.

high school physics static friction
The system shown below is in equilibrium. Using the fact that block A is placed on a table, has a normal force of 40.2 N and it is not moving, what is the coefficient of static friction on block A? I know you can't answer this but if you have any suggestions: Calculate the ...
December 8, 2010 by Jess

Physics
A 55 kg ice skater, initially at rest on a flat skating rink, requires a 198 N horizontal force to be set in motion. However, after the skater is in motion, a horizontal force of 175 N keeps her moving at a constant velocity. Find the coefficients of static and kinetic ...
December 5, 2006 by Anonymous

Phyiscs
True or false: When a system consists of several objects, each with their own mass and velocity, the linear momentum of the system as a whole is simply the product of the system's total mass and the velocity of the system's center of mass.
October 30, 2012 by Angelena

physics
the system is in static equilibrium. The coefficient of static friction between the block and the table's surface is = 1/3. The mass of the block that is hanging down is n1 Kg. The tangent of the angle shown in the figure is tan theta = n2. What is the minimum value of mass, ...
January 14, 2012 by frank

physics
When you push a 1.95 kg book resting on a tabletop it takes 2.40 N to start the book sliding. Once it is sliding, however, it takes only 1.50 N to keep the book moving with constant speed. What are the coefficients of static and kinetic friction between the book and the ...
February 13, 2010 by janie

physics
When you push a 2.05 kg book resting on a tabletop it takes 2.45 N to start the book sliding. Once it is sliding, however, it takes only 1.50 N to keep the book moving with constant speed. What are the coefficients of static and kinetic friction between the book and the ...
September 30, 2010 by vonne

1 more phyiscs for today
sorry for asking for help agen. a baseball catcher puts on an exhibition by catching a .150kg ball dropped from a helicopter at a height of 100m above the catcher. if the catcher "gives with the ball for a distance of .75m while catching it, what average force is exerted on ...
November 6, 2008 by joyce

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