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September 21, 2014

Search: An electron in a uniform electric field increases its speed from 2.1×107 to 3.8×107 over a distance of 1.7 .

Number of results: 56,857

physics
A navy jet with a weight of 231 kN requires an airspeed of 85 m/s for liftoff. The engine develops a maximum force of 107 kN, but that is insufficient for reaching takeoff speed in the 90 m runway available on an aircraft carrier. What minimum force (assumed constant) is ...
November 26, 2006 by Dee

(Math)Simplifying using the laws of exponents
I need help with a few problems. 1.) (x^3/4 times y^1/3)^2/3 How is the answer x^1/2y^2/9 2.)(x^-1/3 times y) (x^1/2 times y^-4/3) How is the answer x^1/6 over y^1/3 3.)(4a^2b^-7/2)^1/2 How is the answer 2a over b^3/4 4.) (x^2/3y^-1/3 over 8x^1/2y)^1/3 How is the answer x^1/18...
June 23, 2013 by ameme

Physics
A proton and an electron are moving due east in a constant electric field that also points due east. The electric field has a magnitude of 8.0 ”Į 104 N/C. Determine the magnitude of the acceleration of the proton and the electron.
June 13, 2014 by Bin

physics - electric fields
A 2.00 square meter flat surface is placed in a uniform electric field of magnitude 6.00 N/C. If the surface is oriented so that the field lines are all parallel to the surface, find the magnitude of the electric flux through this area
September 8, 2013 by Lakitha

physics
An electron with initial speed = 2.54×10^7 m/s is traveling parallel to an electric field of magnitude = 1.66×10^4 N/C .
February 21, 2013 by Elmer

Chemistry
What is the enthalpy change (in kJ/mol) for the following process? Na+(g) + Br-(g) --> NaBr (s) Hint: use the Born-Haber cycle Note: the reference state for Br2 is Br2(l) not Br2(g) Data (in kJ/mol): enthalpy of sublimation of Na(s): 107 standard enthalpy of formation of ...
February 1, 2011 by Crystal

math question
/how do i solve this? The probability of winning a game is 15%. If you play 20 times,how many times should you expect to win? A.5 times B.3 times C.6 times D.15 times
June 5, 2014 by matt

Math evaluating expressions with rational numbers
Liquid nitrogen freezes at -346 degrees F and boils -321 F. Janice gradually heats frozen nitrogen 1 1/2 degrees several times over an hour. 1)Define variables for the number of times Janice increases the temperature and the temperature of the liquid nitrogen after the ...
September 14, 2014 by Kyra

Physics
An electron is at rest. Can this electron be set into motion by applying a) a magnetic field? b) an electric field? Explain your answers. I know that that one of the fields can only be caused by movement, but I don't remember which one...
April 27, 2009 by Susan

chem
(b) If the natural abundance of Ag-107 is 51.84%, what is the natural abundance of Ag-109? 48.16 % (c) If the mass of Ag-107 is 106.905, what is the mass of Ag-109? 108.9 amu so i got the answers correct but kinda forgot how because it took me a while so do you think you could...
September 29, 2010 by lisa

Chem
(b) If the natural abundance of Ag-107 is 51.84%, what is the natural abundance of Ag-109? % (c) If the mass of Ag-107 is 106.905, what is the mass of Ag-109? amu I really need help. Can u say the answer then explain how you got it? Thanks:)
September 26, 2010 by Rebekah

physics
An object with a net charge of 35 µC is placed in a uniform electric field of 643 N/C, directed vertically. What is the mass of the object if it floats in the electric field?
February 5, 2010 by carla

physics
An object with a net charge of 21 µC is placed in a uniform electric field of 590 N/C, directed vertically. What is the mass of the object if it "floats" in the electric field?
April 15, 2011 by Shannah

AP Physics C
An electron follows a helical path in a uniform mag-netic field of magnitude 0.300 T. The pitch of the path is 6.00 um, and the magnitude of the magnetic force on the elec-tron is 2.00x10^-15 N. What is the electron's speed?
October 29, 2012 by Michelle

physics
At some instant the velocity components of an electron moving between two charged parallel plates are vx = 1.5 × 105 m/s and vy = 3.0 × 103 m/s. Suppose the electric field between the plates is given by In unit-vector notation, what are (a) the electron's acceleration in that ...
January 26, 2011 by trisha

Physics
A non-conducting ring of radius with a uniform charge density and a total charge is lying in the - plane, as shown in the figure below. Consider a point P, located at a distance from the center of the ring along its axis of symmetry. (a) What is the direction of the electric ...
February 24, 2013 by P

physics
what is the magnitude and the direction of an electric field when an electron is accelrated vertically upward at a distance of 5.5 metres in 3 micro seconds?
May 4, 2014 by Anonymous

Physics
Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.107 kg, initially moves to the right at a speed of 4.70 m/s, while the second block, of mass 0.214 kg, is initially to the left of the first block and moving to the right at 6.80 m/s. ...
October 18, 2012 by koko

Physics 11th Grade
A foam ball of a mass of 0.150 g carries a charge of -2.00 nC. The ball is in a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?
April 15, 2010 by Adam

PHYSICS
A proton, initially traveling in the +x-direction with a speed of 5.30×105m/s , enters a uniform electric field directed vertically upward. After traveling in this field for 4.38×10−7s , the proton’s velocity is directed 45 ∘ above the +x-axis. What is the strength...
January 28, 2014 by Mary

physics
In Figure 20.2 is a velocity selector that can be used to measure the speed of a charged particle. A beam of particles is directed along the axis of the instrument. A parallel plate capacitor sets up an electric field E which is oriented perpendicular to a uniform magnetic ...
April 23, 2014 by Anonymous

Physics
A proton with mass 1.67×10−27 kg and charge 1.60×10−19 C accelerates from rest in a uniform electric field of strength 500 N/C. (a) What is the magnitude of the acceleration of the proton? (b) How long does it take the proton to reach a speed of 35,000 m/s? (c) ...
July 10, 2014 by Jane

electrc field inside charged solid
how can electric field exist inside a uniform charge solid... when by gauss law electric field is zero inside a conductor
September 5, 2007 by sumit

Physics
An -particle has a charge of +2e and a mass of 6.64 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.10 106 V and then enters a uniform magnetic field whose magnitude is 3.10 T. The -particle moves perpendicular to the magnetic field ...
February 6, 2012 by DCM

Physics
An į-particle has a charge of +2e and a mass of 6.64 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.16 106 V and then enters a uniform magnetic field whose magnitude is 3.00 T. The į-particle moves perpendicular to the magnetic field...
March 25, 2013 by Don

Physics
Consider the electric field created by a very long charged line of negative linear charge density -2.50 nC/m. A small positive point charge of 7 mC moves from a distance of 9 cm to a distance of 17 cm. How much work is done by the electric field?
February 11, 2010 by Joanna

Physics
An electron experiences a force of 12 mN in the positive x-direction in an electric field. What is the magnitude and direction of the electric field?
February 8, 2011 by Sam

physics
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 19.0{\rm cm} , giving it a charge of -13.0\mu {\rm C} Find the electric field just outside the paint layer. Find the electric field 8.50{\rm cm} outside the surface of the ...
February 1, 2013 by Julie

physics
In the Millikan oil drop experiment, an atomizer (a sprayer with a fine nozzle) is used to introduce many tiny droplets of oil between two oppositely charged parallel metal plates. Some of the droplets pick up one or more excess electrons. The charge on the plates is adjusted ...
January 24, 2010 by James

PHYSICS
A charged disk of radius R that carries a surface charge density ó produces an electric field at a point a perpendicular distance z from the center of the disk, given by: Consider a disk of radius 10 cm and positive surface charge density +3.7 mC/m2. A particle of charge -4.5...
February 11, 2010 by Heidi

Physics
Calculate the electric field which must be applied vertically to hold an electron steady in the earth’s gravitational field. Assume that the charge to mass ratio of the electron is 1.758×1011 C kg-1 and that the acceleration due to gravity at the Earth’s surface is 9.8 ms-2
May 17, 2011 by Olivia

Geometry Question (multiple choice)!
The isosceles trapezoid is part of an isosceles triangle with a 34° vertex angle. What is the measure of an acute base angle of the trapezoid? Of an obtuse angle? 73°; 107° 34°; 146° 73°; 146° 34°; 107° Thank you =) :) ;)
January 10, 2012 by Claire

physics
If the original electric field is 1.5x10^-4 N/C and the distance is reduced to one-half the original distance, what is the magnitude of the new electric field?
March 2, 2011 by anonymous

algebra
what is 22 over 7 times 3 times 4 plus 22 over 7 times 3 to the second power
October 11, 2009 by jhu

physics
A neutral solid conducting cylinder rotates about its axis with angular speed 1600 rad/s. In addition, there is an external magnetic field of induction B directed along the cylinder's axis. What must the magnitude of the magnetic field in Teslas so that no electric field is ...
April 21, 2013 by help

Chemistry/Physics
A Sample of gas is held at constant pressure in a cylinder moved by a closed piston. If the volume is halved, how will the new Vrms speed compare with the old one? a) square root of 2 times greater b) the same c) 2 times greater d) 4 times greater e) none i think its e because...
January 7, 2009 by samantha

physics-mechanics-collisions,momentum, impulse
You are at the controls of a particle accelerator, sending a beam of 2.40×107 protons (mass ) at a gas target of an unknown element. Your detector tells you that some protons bounce straight back after a collision with one of the nuclei of the unknown element. All such protons...
October 27, 2012 by HANNE

physics
What is the magnitude of the electric field a distance 3.0mm from an electron? Express your answer to two significant figures and include the appropriate units
January 27, 2014 by James

Physics
An electron is a subatomic particle (m = 9.11 *10^-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.31 * 10^5 m/s to a final velocity of +2.21 * 10^6 m/s while traveling a distance of 0.040 m. The ...
September 20, 2010 by Gerald

science
Charge of uniform surface density (0.2 nC/m2) is distributed over the entire xy plane. Determine the magnitude of the electric field at any point having z = 2 m.
October 3, 2011 by jenny

physics
Charge of uniform surface density (0.2 nC/m2) is distributed over the entire xy plane. Determine the magnitude of the electric field at any point having z = 2 m.
October 3, 2011 by jenny

physics
If the original electric field is 1.5 10-4 N/C and the distance is reduced to one-half the original distance, what is the magnitude of the new electric field?
March 2, 2011 by anonymous

Physics :(( help please TT
A neutral solid conducting cylinder rotates about its axis with angular speed 1600 rad/s. In addition, there is an external magnetic field of induction B directed along the cylinder's axis. What must the magnitude of the magnetic field in Teslas so that no electric field is ...
April 16, 2013 by OIan

College Physics II
Consider a region in space where a uniform electric field E = 7450 N/C points in the negative x direction. What is the distance between the +13.1 V and the +14.1 V equipotentials?
September 15, 2010 by VJC

chemistry
A helium-filled balloon of the type used in long-distance flying contains 420,000 ft3 (1.2 times 107 L) of helium. Suppose you fill the balloon with helium on the ground, where the pressure is 737 mm Hg and the temperature is 16.0 °C. When the balloon ascends to a height of 2 ...
March 30, 2007 by Helpme

Physics
An electron that has velocity v = (3 x 105 m/s) and moves along positive x direction through the uniform magnetic field B = (0.8T) which is along the positive z direction. a. Find the force on the electron (magnitude and direction). (e = - 1.6 x 10-19 C, m=9.1 x10-31 kg) b. ...
April 25, 2011 by asif

Physics
An electron is shot into a uniform magnetic field B = (.5 x + .8 y)T with an initial velocity of v = (4 x + 3 y) × 106m/s. What is the force on the electron?
March 21, 2013 by Lindsey

Physics
A point charge Q1=-2 microcoulomb is located at x=0, and a point charge Q2=+8 microcoulomb, is placed at x=-0.5 on the x axis of a cartesian coordinate system.The goal of this problem is to determine the electric field,at various points along the x axis. a)What is electric ...
February 25, 2013 by Phy

12th
an electron above the earth is balanced by the gravitational force and the electric field of the earth. find the electric field of the earth.
April 27, 2013 by priya

physics
1. Suppose that the strength of the electric field about an isolated point charge has a certain value at a distance of 1 m. How will the electric field strength compare at a distance of 2 m from the point charge? I know it's At twice the distance the field strength will be 1/4...
July 14, 2010 by anonymous

physics
The mean distance of the planet Neptune from the Sun is 30.05 times the mean distance of Earth from the Sun. a.) Determine how many Earth-years it takes Neptune to orbit the Sun. b.) The mass of teh Sun is 1.99 x 10^30 kg, and the closest distance of Neptune from the Sun is 4....
December 16, 2008 by Michelle

Chemistry
for each of the following, give an answer with the correct number of significant figures: A. 400 times 185 b. 2.40 divided by 4 times 125 c. 0.825 times 3.6 times 5.1 d. 3.5 times 0.261 divided by 8.24 times 20.0
January 15, 2013 by tara

Physics
An electron and a proton execute uniform circular motion in the presence of a uniform magnetic field. If the radius of the circle is the same for both particles, which of the following statements is true? A)Both particles move in the same direction; the electron moves faster ...
March 14, 2010 by Sandra

Physics
An electron and a proton execute uniform circular motion in the presence of a uniform magnetic field. If the radius of the circle is the same for both particles, which of the following statements is true? a. Both particles move in the same direction; the electron moves faster...
March 15, 2010 by mm.

physics
a ball with a mass of 0.150 g and positive charge of q=41.2 C is suspended on a string of negligible mass in a uniform electric field. We observe that the ball hangs at an angle of =22.0o from the vertical. What is the magnitude of the electric field?
August 25, 2010 by Matt

physics
A. A uniform, upward-pointing electric field E of magnitude 3.00~103 N/C has been set up between two horizontal plates by charging the lower plate positively and the upper plate negatively. The plates have length L = 4 cm and separation d = 2.00 cm. An electron is then shot ...
January 20, 2010 by Andy

physics
A. A uniform, upward-pointing electric field E of magnitude 3.00~103 N/C has been set up between two horizontal plates by charging the lower plate positively and the upper plate negatively. The plates have length L = 4 cm and separation d = 2.00 cm. An electron is then shot ...
January 21, 2010 by Andy

physics
An electron at rest is found to have a force of 0.40 N to the left. What is the electric field (magnitude and direction) at the location of the electron?
February 19, 2012 by Amber

physics
In an electric field an electron is kept freely. If the electron is replacee by a proton, what will be the relationship between the forces experienced by them?
May 18, 2014 by savita

physics
The electron in the Figure is travelling with a speed of 3  106 m/s. (a) At location A, what are the directions of the electric and magnetic elds due to the electron? (b) Calculate the magnitudes of the electric and magnetic elds at A due to the electron, if x = 2:5  10&#...
April 30, 2012 by musa

Physics (2)
Consider a charged ring of radius 43.4 cm and total charge 18 nC. We are interested in the electric field a perpendicular distance z away from the center of the ring. At what distance from the center of the ring does the electric field become maximum ..so E=kQ/(x^2)at a ...
February 11, 2010 by Andrew

physics
please check: Two point charges, initially 1 cm apart, are moved to a distance of 3 cm apart. By what factor do the resulting electric and gravitational forces between them change? a. 9 b. 3 c. 1/3 d. 1/9 D Two positive charges, each of magnitude q, are on the y-axis at points...
March 14, 2009 by physics

Physics
A vertical wall (5.3 m multiplied by 2.3 m) in a house faces due east. A uniform electric field has a magnitude of 157 N/C. This field is parallel to the ground and points 38° north of east. What is the electric flux through the wall?
March 24, 2013 by Emilie

physics
a truck running along a straight line increases its speed uniformly from 30m/s to 60m/s over a time interval 1 min find the uniform acceleration and the distance travelled during this time interval.
May 19, 2012 by ken

College physics
Two 2.4 cm diameter disks spaced 1.5 mm apart form a parallel-plate capacitor. The electric field between the disks is 4.3×10^5 V/m. What is the voltage across the capacitor? How much charge is on each disk? An electron is launched from the negative plate. It strikes the ...
July 14, 2010 by Emoni

physics
what kind of force field surrounds a stationary electric charge? What additional field surrounds it when it moves? "what kind of force field surrounds a stationary electric charge?" Electric field. "What additional field surrounds it when it moves?" Magnetic field. THANK YOU ...
December 4, 2006 by amy

physics
An electron has a kinetic energy of 4.2 x 10-17 J. It moves on a circular path that is perpendicular to a uniform magnetic field of magnitude 3.3 x 10-5 T. Determine the radius of the path. The electron in the problem has Charge of the electron (q) = 1.6*10-19C Mass of the ...
April 3, 2009 by Determine the radius

physics
A small 8.00g metal ball is suspended by a 14.0cm long string in a uniform electric field of 1200 N/C [right] (like in question #20). If the ball has a charge of 3.5x10^-5 C, what angle will the string make in the electric field?
May 11, 2013 by HELP

Physics
find the electrostatic potential, and then the electric field a distance z above the centre of a circular loop of radius r, which carries a uniform line charge (lamda)
October 13, 2011 by Danny

physics
An electron is traveling through a region of space in which the electric field is along the +x direction and has a magnitude of 1560 N/C. What is the acceleration of the electron?
September 12, 2010 by Anonymous

Physics
An electron is accelerated through 2200 V from rest and then enters a region where there is a uniform 1.30 T magnetic field directed perpendicularly to the electron's velocity.
March 7, 2011 by Jay

Physics
An electron moves with speed 2.46 x 105 m/s in a 1.39-T uniform magnetic field. At one instant, the electron is moving due west and experiences an upward magnetic force of 2.81 x 10−14 N. Caculate the magnetic field (angle). What is the direction of the magnetic field? ...
March 1, 2012 by Ashley

Physics Help
An electron with velocity v = 2.4 × 106 m/s i encounters an electric field E = 1250 N/C i. How long will it take for the speed to be one fourth its original value?
February 11, 2013 by Lindsey

physics
An electron moves through an electric field, and its speed drops from 2000m/s to 1000m/s. What's the potential difference between the two points at which the speed was measured? Express your answer with the appropriate units. I got 5.694*10^(-9) V any help would be great, Thanks.
February 18, 2014 by fanjam42

Physic II
A flat disk 1.0 m in diameter is oriented so that the plane of the disk makes an angle of π/6 radians with a uniform electric field. If the field strength is 491.0 N/C, find the electric flux through the surface. Please show step by step
February 2, 2014 by John

physics
A. A uniform, upward-pointing electric field E of magnitude 3.00 10e3 N/C has been set up between two horizontal plates by charging the lower plate positively and the upper plate negatively. The plates have length L = 4 cm and separation d = 2.00 cm. An electron is then shot ...
January 21, 2010 by Andy

physics
a thin wire with linear charge density _ is surrounded by a conducting cylindrical shell. (a) If the electric field must be zero inside a conductor, is the electric field due to the wire shielded from extending beyond the conducting shell? (b) Find the electric field as a ...
September 23, 2008 by al

Physics E&M
An electron is released from rest on the axis of a uniform positively charged ring, 0.100 m from the ring's center. If the linear charge density of the ring is +0.149 µC/m and the radius of the ring is 0.200 m, how fast will the electron be moving when it reaches the center of...
January 24, 2010 by Alex

Physics - please check over
A charged particle moves at a constant velocity in a straight line through a region in space... a) is the electric field zero in the region? Explain b) is the magnetic field zero i the region? Explain I think a is yes because a charged particle will always create an electric ...
April 28, 2009 by Lana

chem
What mass of protons would be required to just neutralize the charge of 1.5 g of electrons? my teacher said .0015kg times 1e-/.00091e-27kg times 1pt/1e- times 1.67262e-27 over 1 p
September 21, 2010 by Sara

physics
An electron with initial speed = 2.54×10^7 m/s is traveling parallel to an electric field of magnitude = 1.66×10^4 N/C . How much time will elapse before it returns to its starting point?
February 21, 2013 by Steve

Physics
Consider a charged ring of radius 43.4 cm and total charge 18 nC. We are interested in the electric field a perpendicular distance z away from the center of the ring. At what distance from the center of the ring does the electric field become maximum?
February 11, 2010 by Andrew

Physics
A simple pendulum suspended in a rocket ship has a period To. Assume that the rocket ship is near the earth in a uniform gravitational field. Determine for each of the following statements whether it is correct or incorrect. If the length of the pendulum is doubled, the new ...
May 4, 2011 by Joan

Physics
If a proton is released from rest in a uniform electric field does electric potential at its position increase, stay the same, or decrese?
February 23, 2010 by Anonymous

Physics
If a proton is released from rest in a uniform electric field does electric potential at its position increase, stay the same, or decrese?
February 24, 2010 by Sara

physics
An electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive plate (see the drawing). The plates are separated by a distance of 1.3 cm, and the electric field within the capacitor has a magnitude of 2.7 x 106 V/m. What ...
September 18, 2011 by kim taylor

Physics
An electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive plate (see the drawing). The plates are separated by a distance of 1.4 cm, and the electric field within the capacitor has a magnitude of 3.5 106 V/m. What is ...
February 1, 2012 by Anne

physics
An electron, moving with a speed, 6.8 km/s, enters a magnetic field that has a strength of 6.9 T. The magnetic force on the electron is perpendicular to the electron's velocity. Determine the radius of the resultant path of the electron.
April 9, 2010 by Jamie

physics
Two 4.0-g spheres are suspended by 9.0-cm-long light strings (see the figure). A uniform electric field is applied in the x-direction. If the spheres have charges of −3. 10-8 C and +3. 10-8 C, determine the electric field intensity that enables the spheres to be in ...
December 20, 2011 by ann

Physics
A charged disk of radius R that carries a surface charge density σ produces an electric field at a point a perpendicular distance z from the center of the disk, given by: Edisk = (sigma/2e0) x(1-(z/(square root(z^2 + R^2)) Consider a disk of radius 10 cm and positive ...
February 13, 2010 by Susie

pH
im trying to calculate the pH of a 1.0L soln containing 53.8 g of completely dissociated Mg(CN)2. is this the diss. equation? Mg(CN)2 + water --> MgOH + 2CN^- i dont think i did the problem rite b/c i got 15.7 for the pH. i got 53.8M Mg(CN)2 for the initial conc. or i think...
May 18, 2007 by christine

Physics
An electromagnetic wave has an electric field strength of 145 V/m at a point P in space at time t. A parallel-plate capacitor whose plates have area 0.109 m2 has a uniform electric field between its plates with the same energy density as the answer to part a. What is the ...
July 1, 2010 by Drew

college gen. physics II
38. A proton initially moves left to right long the “‑axis at a speed of 2 “ 103 m/s. It moves into an electric field, which points in the negative “ direction, and travels a distance of 0.2 m before coming to rest. If the proton's mass and charge are 1.67 “ 10‑27 ...
July 25, 2010 by Alinkashia

Physics
A small m = 2.00 g plastic ball is suspended by a L = 24.0 cm long string in a uniform electric field, as shown in Figure P15.50. If the ball is in equilibrium when the string makes a 18.0° angle with the vertical as indicated, what is the net charge on the ball? The electric ...
February 1, 2011 by Rachel

Physics Conducting Spheres
1. Two concentric conducting spherical shells have radii of 0.145 m. and 0.215 m. The inner sphere bears a charge of -3.00E-08 C. An electron escapes from the inner sphere with negligible speed. Assuming that the region between the spheres is a vacuum, compute the speed (in ...
October 21, 2012 by andrew

physics
A proton, initially traveling in the +x-direction with a speed of 6.00×105m/s , enters a uniform electric field directed vertically upward. After traveling in this field for 4.38×10−7s , the proton’s velocity is directed 45 ∘ above the +x-axis.
February 6, 2014 by chris

Algebra
Simplify: 3 squared divided by the square root of 80. Multiple choices: 1. square root of 80 divided by 3 to the negative 2nd power 2. 4 over 9 times the square root of 5 3. 5 over 4 times the square root of 5 4. 9 over 20 times the square root of 5 However, I got 9 times the ...
December 3, 2007 by anonymous

Chem
The heat of combustion of octane (C8H18) is 47.8 kJ/g and one gallon of C8H18 has a mass of 2620 g. If a car using octane is driven 10,000 miles in one year and gets 25 miles per gallon of octane, what is the total energy consumption? 1. 5.01 × 107 kJ 2. 8.45 × 102 kJ 3. 34 × ...
November 14, 2010 by Kai

AP Chem
The heat of combustion of octane (C8H18) is 47.8 kJ/g and one gallon of C8H18 has a mass of 2620 g. If a car using octane is driven 10,000 miles in one year and gets 25 miles per gallon of octane, what is the total energy consumption? 1. 5.01 × 107 kJ 2. 8.45 × 102 kJ 3. 34 × ...
November 14, 2010 by Kai

Physics
The Earth is surrounded by an electric field on its surface that points toward the center of the Earth with an average magnitude of 150 N/C. If there is an electron that is released in vacuum at the Earth’s surface, what will the acceleration due to the Earth’s electric field ...
August 10, 2009 by Sammy

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