Tuesday
September 27, 2016

Search: A force of 5.0 is required to stretch a certain spring by 1.2 .How far must this spring be stretched for its potential energy to be 0.015 ?

Number of results: 67,397

PHYSICS
what work must a diesel engine in an 18,000kg truck do to increase its speed from 30.m/s to 40 m/s in 5.0s? what average force did the engine exert? what power was needed (in horsepower)
August 6, 2014 by EMMA

physics
a student is helping her teacher move a 9.5 kg box of books what net sideways force must she exert on the box the slide it across so that it accelerates at 1.0 m/s2
January 20, 2015 by Joshua Bennet

Physics
A 25.0 m tall hollow aluminum flagpole is equivalent in strength to a solid cylinder of aluminum 3.50 cm in diameter. A strong wind bends the pole much as a horizontal force of 900 N exerted at the top would. How far to the side does the top of the pole flex? I am almost 100% ...
February 21, 2015 by Jimmy

Chemistry
Predict the standard cell potential and calculate the standard reaction Gibbs free energy for galvanic cells having the following cell reactions: 2H2+O2=2H2O in acidic solution 2H2+O2=2H2O in basic solution I understand the idea behind the problem, but I am not sure how the ...
March 10, 2014 by Anonymous

Chemistry
How much heat energy is required to heat up 50.0 grams of water from 20.2 degrees Celsius to 34.2 degrees Celsius? I want o use the Q=mc(change in temp) formula but I am only given the m and difference in temp in this question so I am not sure of what I am supposed to do.
September 4, 2016 by Kaitlyn

Physics
A force of 3.00 N acts through a distance of 12m in the direction of the force.Find the work done. Work=force*distance*CosTheta where theta is the angle between force and distance.
September 16, 2006 by fluffy

Forces w/ tension
Assume that three blocks portrayed below move on a frictionless surface and that a 42 N force acts on the 3.0 kg block. Determine (a) the acecleration given the system, (b) the tension inthe cord connecting the 3.0kg and the 1.0 kg blocks, and (c) the force exerted by the 1....
December 7, 2006 by Armando

physics
4. An 800.0 kg roller coaster car is at rest at the top of a 95 m hill. It rolls down the first drop to a height of 31 m. When it travels to the top of the second hill, it is moving at 28 m/s. It then rolls down the second hill until it is at ground level.Calculate the kinetic...
June 8, 2011 by Jamie

physics
( 1.) A passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is not true?< (A) The passenger is in motion relative to the passer-by (B) The passer-by is stationery relative to the ...
October 12, 2011 by lawrence

Chem
Calibration data for a bromide ion-selective electrode (ISE) was collected and recorded below. The potential of the ISE was measured against a saturated calomel electrode (SCE). All solutions were buffered at a pH of 7.56. A linear calibration curve can be constructed from ...
March 30, 2015 by Cassie

Physics
Calculate the work done by the applied force accelerating a 2 kg object at 3 m/s/s over 4 m if there is a 2.5 frictional force of resistance. I calculated using F=ma=6N; then net force = 6N-2.5N=3.5 N so W=fd=14J. Did I do this correctly? Thanks
April 6, 2009 by KC

chem
order the elements Mg, K, Ca, S according to second ionization energy I know that K would have the highest second ionization energy, then come S bec it takes more energy to remove an electron from a nonmetal than a metal, which is next ?
November 24, 2008 by Natash

Chemistry
Activation energy is the heat released in a reaction the energy barrier between reactants and products the energy given off when reactants collide*** generally very high for a reaction that takes place rapidly
May 16, 2016 by Jacob

Physic
A 3.8 kg object is supported by an aluminum wire of length 1.9 m and diameter 2.2 mm. How much will the wire stretch?
May 7, 2011 by Catherine

Physic
A 3.8 kg object is supported by an aluminum wire of length 1.9 m and diameter 2.2 mm. How much will the wire stretch?
May 8, 2011 by Maria

physics.pls help
Why is it important to asaume that a rope under tension is taut and does not stretch. pls help
November 14, 2011 by ted

Algebra 2
What are the steps to performing the following transformation and then graphing it? Transformation: Stretch f(x) = |2x| - 3 horizontally by a factor of 3/2.
October 10, 2014 by Victoria

CHEMISTRY
1)If 36 mL of KMnO4 solution are required to oxidize 25 mL of 0.02932 M NaC204 solution, what is the concentration of the solution? 2)A Certain brand of iron supplement contains FeSO4-7H2O with miscellaneous binders and fillers. Suppose 22.93 mL of the KMn04 solution used in ...
October 27, 2010 by june

Physics
A skier of mass 76 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to pull him 40 m up a 30 slope (assumed frictionless) at a constant speed of 2.5 m/s? J I know that the answer to the first problem is 14896Joules, but I do not know how to ...
March 10, 2010 by Kelsey

physics
A 73 kg crate is dragged across a floor by pulling on a rope attached to the crate and inclined 15 above the horizontal. (a) If the coefficient of static friction is 0.52, what minimum force magnitude is required from the rope to start the crate moving?
December 2, 2010 by vm

English
1. it is by far the best dictionary. 2. It is far and away the best dictionary. 3. it is far the best dictionary. 4. it is a lot the best dictionary (Which ones are correct? Do you have more expressions which can be used before the superlative degree?)
April 16, 2009 by John

physics
A box whose mass is 20 kg rests on a frictionless ramp with a 15 degree (upward) slope. A mover pulls up on a rope attached to the box to pull it up the incline. If the rope makes an angle of 40 degree with the horizontal, what force does the mover have to exert in order for ...
November 11, 2006 by David S.

mechanics
Find the total kinetic energy of a 1500 g wheel, 700 mm in diameter, rolling across a level surface at 650 rpm. Assume that the wheel can be considered as a hoop. (b) For the wheel in part (a), calculate the torque required to decrease its rotational speed from 400 rpm to rest...
May 14, 2013 by george

Physics
Some communication satellites are put into a circular geosynchronous orbit in which the satellite remains above a certain position on the earth's equator as it orbits. Such a satellite would always be in the same position in the sky as seen from the transmitting or receiving ...
May 1, 2013 by J

PHYSICS!!!
A thin 1.8-mm coating of glycerine has been placed between two microscope slides of width 1.0 cm and length 4.0 cm. Find the force required to pull one of the microscope slides at a constant speed of 0.35 m/s relative to the other slide. Answer in N
November 11, 2012 by k

PHYSICS!!!
A thin 1.8-mm coating of glycerine has been placed between two microscope slides of width 1.0 cm and length 4.0 cm. Find the force required to pull one of the microscope slides at a constant speed of 0.35 m/s relative to the other slide. Answer in N
November 11, 2012 by k

physics
take a satalite going around the earth... what allows us to say net force (radial) = Fg = Fr = ma were the Fg is the force of gravity exerted on the satalite were Fr is radial force and ma is the mass and acceleration of the satalite ok I understand newtons second law but what...
August 17, 2009 by physics

Physics
A 10 kg crate is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling force is 86 N parallel to the incline, which makes an angle of 30 with the horizontal. Assuming the coefficient of kinetic friction is 0.4 and the crate is pulled a distance of 7.5 mfind...
January 5, 2011 by Bob

PLEASE HELP ME!
A 68.6-kg circus performer is fired from a cannon that is elevated at an angle of 43.6 above the horizontal. The cannon uses strong elastic bands to propel the performer, much in the same way that a slingshot fires a stone. Setting up for this stunt involves stretching the ...
December 1, 2012 by Jessica

physics
In designing rotating space stations to provide for artificial-gravity environments, one of the constraints that must be considered is motion sickness. Studies have shown that the negative effects of motion sickness begin to appear when the rotational motion is faster than ...
December 19, 2010 by jessica

physics
In designing rotating space stations to provide for artificial-gravity environments, one of the constraints that must be considered is motion sickness. Studies have shown that the negative effects of motion sickness begin to appear when the rotational motion is faster than ...
November 7, 2012 by Anonymous

Statistics
The probability that a house in an urban area will develop a leak is 5%. If 82 houses are randomly selected, what is the probability that none of the houses will develop a leak? A) 0.050 B) 0.001 C) 0.000 D) 0.015
March 1, 2011 by megan

Astronomy
Imagine that you are a particle physicist, and you have come up with a theory that some gamma-ray bursts come from the decay of a new and exotic sub-atomic particle that you think might exist. You calculated that if this particle really does exist and decay as you predict, ...
May 11, 2014 by qwerty

physics
Party hearing. As the number of people at a party increases, you must raise your voice for a listener to hear you against the background noise of the other partygoers. However, once you reach the level of yelling, the only way you can be heard is if you move closer to your ...
May 13, 2009 by Chirayu

physics
Party hearing. As the number of people at a party increases, you must raise your voice for a listener to hear you against the background noise of the other partygoers. However, once you reach the level of yelling, the only way you can be heard is if you move closer to your ...
May 14, 2009 by NIR

Physics
1. If the angle of the boat is 150 degrees, v' = 3 m/s, and v0 = 3.0 m/s, how far do you drift downstream before you arrive at the other side of the river? (HINT: read the x axis.) 2. If the river flow rate (v0) = 3.0 m/s, and the angle (, or theta) is 150 degrees, what v...
February 1, 2014 by John

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 ...
March 6, 2016 by AlphaPrimes

Physics
A car is driving on a level highway. It is acted upon by the following forces: a downward gravitational force of 12 kN, an upward contact force due to the road of 12 kN, another contact force due to the road of 7 kN directed West, and a drag force due to air resistance of 5 kN...
October 3, 2014 by HArley

Physics
A 25 g bullet is fired from a rifle with a barrel of length 65 cm. The bullet starts from rest at one end of the barrel and experiences an average force of 1200 N due to the expanding gases as it moves down the length of the barrel. a) Calculate the work done on the bullet by ...
November 20, 2013 by Angie

computers
TMA1PHY111 ( 1.) A passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is not true?< (A) The passenger is in motion relative to the passer-by (B) The passer-by is stationery relative ...
October 12, 2011 by lawrence

Astronomy
Darwin proposed that the Moon formed far closer to Earth than it is now. Lets see just how close it could possibly be to Earth and survive. In particular, in the next 4 problems you will find the distance from Earth at which the tidal force due to Earth is sufficient to lift ...
December 23, 2012 by sam

Dynamics
a 1500 kg automobile is traveling up to 20 degree incline at a speed of 6 m/s. if the driver wishes to stop his car in a distance of 5m, determine the frictional force at pavement which must be supplied by rear wheels
July 30, 2012 by DHilsath

Dynamics
1500 kg automobile is traveling up to 20 degree incline at a speed of 6 m/s. if the driver wishes to stop his car in a distance of 5m, determine the frictional force at pavement which must be supplied by rear wheels
August 4, 2012 by basha

dynamics
the 1500 kg automobile is travelling up the 20 degree inclined at a speed of 6 m/s , if the driver wishes to stop his car in a distance of 5m , determine the frictional force at the pavement which must be supplied by the rear wheels.
December 30, 2012 by umesh

dynamics
a 1500 kg automobile is traveling up to 20 degree incline at a speed of 6 m/s if the driver wishes to stop his car in a distance of a 5m, determine the frictional force at pavement which must be supplied by rear wheels.
July 22, 2013 by Anonymous

Dynamics
A 1500 kg automobile is traveling up to 20 degree incline at a speed of 6 m/s. If the driver wishes to stop his car in a distance of 5m,determine the frictional force at pavement which must be supplied by rear wheels.
July 22, 2013 by Anonymous

Dynamics
A 1500 kg automobile is traveling up to 20 degree incline at a speed of 6 m/s. If the driver wishes to stop his car in a distance of 5m,determine the frictional force at pavement which must be supplied by rear wheels.
July 22, 2013 by Anonymous

Physics
A small mailbag is releassed from a helicopter that is ascending steadily at 5m/s. After 2s. a) what is the speed of the mailbag? b) how far is it below the helicopter? a) would I use v=v_0 +at v=5m/s + 9.8m/s^2(2s) v=24.6 m/s is this the correct speed of the mailbag? For b) i...
September 19, 2007 by Tammy

Physics
(a) How far from a 53.6 mm focal-length lens must an object be placed if its image is to be magnified 2.12X and be real? (b) What if the image is to be virtual and magnified 2.12X?
March 19, 2010 by Anonymous

Pysics
A mother and daughter are on a seesaw in the park. How far from the center must the 127 lb mother sit in order to balance the 49 lb daughter sitting 7 ft from the center?
December 7, 2012 by joshua

Physics
A beam of light is emitted in a pool of water from a depth of 61.5 cm. How far away, relative to the spot directly above it, must it strike the air-water interface in order that the light does not exit the water?
March 15, 2010 by Anonymous

physics
A beam of light is emitted in a pool of water from a depth of 64.0 cm. How far away, relative to the spot directly above it, must it strike the air-water interface in order that the light does not exit the water?
April 21, 2011 by anonymous

Statistics
Suppose that the population of weights of airline passengers has mean 150 lbs. and standard deviation 25 lbs. A certain plane has a capacity of 7,800 lbs. (a) What is the probability that a flight of 50 passengers will exceed capacity it? (b) If we wish to reduce the chance of...
December 11, 2012 by Doe

physics
It has been said that sometimes lead bullets melt upon impact. Assume that a bullet with an initial temperature of 301 K receives 67.9 % of the work done on it by a wall on impact as an increase in internal energy. (The melting point of lead is 601 K, the heat of fusion for ...
November 18, 2014 by mehmet kaya

physics
A 50.0-g sample of a conducting material is all that is available. The resistivity of the material is measured to be 11~ 10-8 m and the density is 7.86 g/cm3. The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.5 . a) What length of...
November 15, 2012 by Amber

Physics II
A 51.0 g sample of a conducting material is all that is available. The resistivity of the material is measured to be 12 10-8 m, and the density is 7.67 g/cm3. The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.5 . What length of wire ...
March 7, 2013 by Stephanie

HISTORY
how is the size of a legislative district determined A. by geographical boundaries B. by city limits C. by the apportioned population D. by county boundaries*** 2. the term bicameral legislature refers to two of what A. chambers of the General Assembly *** B. state senators in...
February 26, 2015 by HELP ME PLEASE

Algebra 2
It is a beautiful spring day so you decide to go rowing upstream on your favorite river. You row at a constant rate of 1 mile per hour. Suddenly a gust of wind blows your hat off into the water. You watch it float away downstream but since you never really liked it that much, ...
February 8, 2010 by John

chemistry
upper atmosphere chloromethane can be decomposed by light according to the reaction:CH3Cl -> CH3(g) + Cl(g)The energy required for this reaction is 428 kJ mol1. If each molecule of chloromethane is decomposed by one photon, what is the maximum wavelength that photon can have?
October 26, 2011 by el

Chemistry
The heat of vaporization of benzene, C6H6, is 30.8kJ/mol at its boiling point of 80.1 degrees celsius. How much energy in the form of heat is required to vaporize 102g of benzene at its boiling point? I know that the answer is 24.2kJ but i am not sure how to get this.
February 5, 2012 by Hannah

potential rational zeros
list the potential rational zeros of the polynomial function, do not find the zeros. f(x)=x^5-5x^2+4x+3
March 13, 2010 by Paris

SCIENCE HELP
CAN SOMEONE CHECK THESE!! 1. Which of the following is a reason why a person might want to wear snowshoes if walking a distance in deep snow? (1 point) snowshoes spread the persons weight out snowshoes reduce the amount of pressure on a given spot snowshoes keep the person ...
May 28, 2016 by gabby

chemistry
Calculate the energy (in kJ) required to heat 25 g of liquid water from 25oC to 100.oC and change it to steam at 100oC. The specific heat capacity of liquid water is 4.18 J/goC, and the molar heat of vaporization of water is 40.6 kJ/mol.
February 17, 2016 by maria

Physics: Waves in Media
A scout troop is practicing its orienteering skills with map and compass. First they walk due east for 1.5 km. Next, they walk 32 west of north for 3.5 km. How far and in what direction must they walk to go directly back to their starting point?
June 6, 2011 by Ryan

chemistry
A chemist must dilute 55.6 ml of 1.48 M aqueous silver nitrate (AgNO3) solution until the concentration falls to 1.00M. He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in milliliters. Round your ...
August 31, 2012 by Lizzy

psychology
In social psychology whats the term that describes this scenario: someone treats you in a certain way then you respond in a certain way consistent with how you were treated. however, that is the way you wanted to act.
May 24, 2011 by tony

Physics
A rope exerts a constant horizontal force of 203N pulling a 68-kg crate across the floor. The velocity of the crate is observed to increase from 3m/s to 5m/s in a time of 4 seconds under the influence of this force and the frictional force exerted by the floor on the crate. ...
June 21, 2013 by Tim

Chemistry
A zinc-copper battery is constructed as follows. Zn | Zn2+ (0.70 M) || Cu2+ (2.30 M) | Cu The mass of each electrode is 200. g. (a) Calculate the cell potential when this battery is first connected. 1 V (b) Calculate the cell potential after 10.0 A of current has flowed for 10...
March 29, 2009 by Amy

Chemistry
A certain reaction has an activation energy 52.93 kJ/mol. At what kelvin temperature will the reaction proceed 8.00 times faster than it did at 315K? Ea = 52.93 kJ/mol = 52930J R (gas constant) = 8.314 T1 = 315K k1 = rate constant at T1 T2 = ? k2 = rate constant at k2 = 8.00 ...
March 17, 2015 by Jessica

Physics
A point charge q = -2.41 nC is initially at rest adjacent to the negative plate of a capacitor. The charge per unit area on the plates is 4.67 μC/m2 and the space between the plates is 6.53 mm. What is the potential difference between the plates? What is the kinetic ...
February 1, 2012 by Ashley

Math
What is the difference between a vertical stretch and a vertical shrink?
October 22, 2011 by Izzy

math
mike has an average of 89 on the five tests he has taken so far this semester. what grade must mike earn on the next test to raise his average grade exactly to 90?
May 29, 2012 by keke

social studies (Saudi Arabia)
In what way is Islam most likely to impact Muslims during work days? 1)They must leave work early 2)They will not participate in leisure activities after work 3)They can not have certain jobs 4)They need to pause during their work and pry I think it is 4. Am I correct? please ...
January 22, 2015 by Abby

math
A 26 meter guy wire is attached to an upright pole 24 meters from the ground. How far from the pole must the wire be anchored in the ground?
January 28, 2016 by Mark

Chemistry
Activation energy is____ the heat released in a reaction*** the energy barrier between reactants and products the energy given off when reactants collide generally very high for a reaction that takes place rapidly
May 12, 2016 by Annamarie

Chemistry
Predict the standard cell potential and calculate the standard reaction Gibbs free energy for galvanic cells having the following cell reactions: a.)3Zn + 2Bi3+ = 3Zn2+ + 2Bi b.)2H2 + O2 = 2H20 in acidic solution c.)2H2 + O2 = 2H20 in basic solution d.)3Au+ = 2Au + Au3+ I ...
February 27, 2014 by Anonymous

physics
The pendulum shown right has a mass of 0.26 kg and moves to the right from point B to point A. At point B the speed of the mass is 3.2 m/s. (i) What is the change in the gravitational potential energy in the motion from B to A? (ii) What is the mass speed at point A? (iii) If...
March 8, 2013 by Meder

electromagnetic just put the rule
In a certain material for which = 6.5 o  , H = 10ax + 25ay - 40az A/m Find (a) The magnetic susceptibility xm of the material (b) The magnetic flux density (c) The magnetization, (d) The magnetic energy density I just want the rule of them
October 31, 2014 by Ahmed

Chemistry
The isotopic abundance of naturally occurring hydrogen is as follows: 1H 99.985 atom % 2H 0.015 atom% When H2 gas is formed from naturally occurring hydrogen, what percentages of the molecules have molecular weights of approximately 2, 3 and 4?
October 1, 2013 by Jane

Physics
A single photon in empty space is converted into an positron and an electron, each with rest mass 511Mev. (a) show this transformation is not possible (dynamaically). (b)How could this transformation be made posible. (c)what is the minimum photon energy required to enable the ...
June 12, 2011 by Forest

Physics
This is a very confusing question and I have no idea how to tackle it. - In a nuclear reactor, neutrons released by nuclear fission must be slowed down before they can trigger additional reactions in other nuclei. To see what sort of material is most effective in slowing (or ...
October 30, 2009 by Sal

physics
A launching mechanism consists of an arm (uniform rod with mass 250. g and length 75.0 cm) with a holder (negligible mass) at one end mounted to a hub of radius 3.00 cm and negligible mass at the other end. A string is wrapped around the hub and passes to a spring of constant ...
November 21, 2014 by Sham

AP Biology
We just did the Osmosis and Diffusion lab in Biology. My teacher wants us to use water potential (and its equation) to explain the results....how do I use the water potential equation?
January 13, 2008 by Marie

Biology
Which of the following is the balanced equation for photosynthesis in plant cells? A 3C0+ 3H0 + Energy --)-CH120 + 30 2 266 2 B. 6C0+ 6Hp + Energy--)-CHp + 60 2 616 2 C. CH0 + 30--)-3C0+ 3H0 + Energy 6126 2 2 2 D. CHp + 60--)-6C0+ 6Hp + Energy 616 2 2 I really do not know
July 14, 2014 by Dulce

Physics
A car with a mass of 1380 kg is moving around a curve with a radius of 50 m at a constant speed of 25 m/s (about 56 MPH). (a) What is the centripetal acceleration of the car? 1 m/s2 (b) What is the magnitude of the force required to produce this centripetal acceleration? 2 N
February 22, 2012 by Mina

physics
car with a mass of 1280 kg is moving around a curve with a radius of 50 m at a constant speed of 10 m/s (about 22 MPH). (a) What is the centripetal acceleration of the car? (b) What is the magnitude of the force required to produce this centripetal acceleration
March 31, 2014 by candi gonzalez

Science
What is the force of a 2.0N force and an 3.0N force acting on an object in the same direction?
November 9, 2010 by ced

physics
A toy car is given a quick push so that it moves on an inclined ramp. After it is released, it moves up, reaches its highest point and moves back down again. Friction is so small it can be ignored. What net force acts on the car? A. net force of zero B. Net constant force up ...
July 2, 2011 by alexa

physics
The Easy Bake Oven is a common toy for young children who want to emulate the process of cooking. Suppose this oven is plugged into a 120 V electrical outlet and "cooks" the food by using a 144 ohm resistor light bulb that converts electrical energy to both light and heat ...
May 30, 2013 by Julia

algebra 1 question please help
You use a line of best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is -0.015. How confident can you be that your predicted value will be reasonably close to the actual value?
March 8, 2016 by Anonymous

physics
A body of mass 6kg, initially moving with speed 12m/s, experiences a constant retarding force of 10 newtons for 3 seconds. Find the kinetic energy of the body at the end of this time.
January 10, 2011 by nerd

physics
A body of mass 6kg, initially moving with speed 12m/s, experiences a constant retarding force of 10 newtons for 3 seconds. Find the kinetic energy of the body at the end of this time.
January 10, 2011 by nerd

physics
A body of mass 6kg, initially moving with speed 12m/s, experiences a constant retarding force of 10 newtons for 3 seconds. Find the kinetic energy of the body at the end of this time.
January 10, 2011 by nerd

physics
A body of mass 6kg, initially moving with speed 12m/s, experiences a constant retarding force of 10 newtons for 3 seconds. Find the kinetic energy of the body at the end of this time.
January 10, 2011 by nerd

physics
A body of mass 6kg, initially moving with speed 12m/s, experiences a constant retarding force of 10 newtons for 3 seconds. Find the kinetic energy of the body at the end of this time.
January 10, 2011 by nerd

physics
A body of mass 6kg, initially moving with speed 12m/s, experiences a constant retarding force of 10 newtons for 3 seconds. Find the kinetic energy of the body at the end of this time.
January 10, 2011 by nerd

Physics
two objects move toward each other collide and separate. there was no net external force acting on the objects but some kinetic energy was lost. is momentum conserved ? what is the explanation ?
August 16, 2013 by kate

Physics
(a) What is the energy of a pendulum (L = 0.9 m, m = 0.4 kg) oscillating with an amplitude of 4.3 cm? (b) The pendulum's energy loss (due to damping) is replaced in a clock by allowing a 2.3-kg mass to drop 1.0 m in 1 week. What percentage of the pendulum's energy is lost ...
June 25, 2012 by Ally

Physics
How can you explain work, in regards to electricity? I understand it as the product of energy used, usually displacement. I cant understand or explain it as far as electricity is concerned. I'm not sure if I understand it at all.
June 19, 2016 by Steve

Physics
A high voltage unit has an internal resistance of 50 mega ohms. On open circuit, the potential difference across its output is 3000 V. When a resistor R is connected across its output, the potential difference at the output falls to 1000 V. Calculate the resistance of R.
February 4, 2016 by Priya

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