physics

How much kinetic energy is gained by an electron that is allowed to move freely through a potential
difference of 2.5 × 104 V?

  1. 0
  2. 0
  3. 9
asked by Lauren

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    How much kinetic energy is gained by an electron that is allowed to move freely through a potential difference of 2.5 × 10^4 V? -- U=qV =(1.6*10^-19)(2.5*10^4) =4*10^-15 I'm not sure what other formulas i can use, or how to

    asked by Anonymous on February 26, 2010
  2. physics

    During a lighting discharge, 30C of charge move through a potential difference of 1.0 X 10^8V in 2.0X10^-2s. The energy released by this lighting bolt is: a)1.5 X 10^11 J b) 3.0 X 10^9 J c) 6.0 X 10^7 J d) 3.3 X 10^6 J e) 1500 J

    asked by susane on March 12, 2007
  3. Physics

    A photon of energy E strikes an electron at rest undergoes pair production, producing a positive electron(positron) and an electron, photon+electron produce positron+electron+electron The two electrons and the positron move off

    asked by Abby on March 22, 2011
  4. physics

    I need help with this problem so please help me. 1. A certain photoelectric surface has a threshold frequency of 6.2*10^14 Hz. A. How much kinetic energy is required to produce an electron emission? B. if the surface is

    asked by Jessie on January 23, 2012
  5. Physics

    A metal ball of mass 2kg is allowed to fall freely from rest from height of 5m. Calculate potential energy it possesses and kinetic energy before it reaches the ground. What happens to mechanical energy of the ball after it hits

    asked by Angela on February 2, 2016
  6. Physics

    A 5.36 kg object falls freely (ignore air resistance), after being dropped from rest. Determine the initial kinetic energy, the final kinetic energy, and the change in kinetic energy for the following. (a) first meter of fall

    asked by George on March 8, 2014
  7. Physics - urgent

    I already asked this and was given an answer, but I don't fully understand it and so would like a further explanation. What I asked was... An electron is accelerated through a uniform electric field of magnitude 2.5x10^2 N/C with

    asked by Linn on April 22, 2009
  8. science

    A rock of mass 50kg is held at 45meter from the ground.it is allowed to fall freely.find the change in potential energy,when it is a height at 20meter from the ground.also find the speed at this time and kinetic energy ?

    asked by Anonymous on January 2, 2013
  9. Chemistry

    Calculate the kinetic energy of the photoelectron emitted by a metal (threshold energy is 1.50 x 10^-19J) exposed to light of wavelength 5.00 x 10^-7 m (the energy beyond that required to knock electron goes into electron kinetic

    asked by Anonymous on October 31, 2014
  10. The Binding Energy of Electrons?

    An X-ray photon of wavelength 0.954 nm strikes a surface. The emitted electron has a kinetic energy of 935 eV. What is the binding energy of the electron in kJ/mol? [KE =1/2 mv^2; 1 electron volt (eV) = 1.602 x 10^- 19 J]

    asked by Amy on November 26, 2012

More Similar Questions