ZuoTi.Pro
Question

Find the speed of an electron that has a kinetic energy of 2.07 eV. 1 eV= 1.602 x 10^-19 J. Answer in units of m/s.

Calculate the speed of a proton with a kinetic energy of 2.07 eV. Answer in units of m/s.

A parallel-plate capacitor has a capacitance Co. A second parallel-plate capacitor has plates with twice the area and twice the separation. What is the capacitance of the second capacitor?

Calculate the energy stored in a 27.3 uF capacitor when it is charge to a potential of 82 V. Answer in units of mJ.

Two parallel conducting plates separated by a distance d are connected to a battery of voltage E. What is correct if the plate separation is doubled while the battery remains connected?

001 (part 1 of 2) 10.0 points Find the speed of an electron that has a kinetic energy of 2.07 eV. 1 eV 1.602 x 10-19 J. Answer in units of m/s. 002 (part 2 of 2) 10.0 points Calculate the speed of a proton with a kinetic energy of 2.07 eV. Answer in units of m/s.

science   physics   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

The speed of the electron can be calculated as follow The mass of electron ism,=9.11x10-ng thegi iven KE 2.07 eV #207x 1.602x10 fom 1ev-1.602x10-°J] 2.07x 1.602x 10,--x3.1 1x10 2.07x1.602x1019 x2 6.632x10-19 x10 0.728x10 9.11x10- 9.11 ?. =0728x102 = 0.853x 10° = 8.53x10 m/s(2) The speed of the proton can be calculated as follow The mass of proton is m,-1672x10 kg the given K.E-207ev -2.07x1.602x1

0 0
Add a comment
Know the answer?
Add Answer to:
Find the speed of an electron that has a kinetic energy of 2.07 eV. 1 eV= 1.602 x 10^-19 J. Answer in units of m/s. Ca...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • An electron with a kinetic energy of 2.00 keV (1 eV = 1.602 × 10-19 J)...

    An electron with a kinetic energy of 2.00 keV (1 eV = 1.602 × 10-19 J) (See the figure above.) is fired horizontally across a horizontally oriented charged conducting plate with a surface charge density of σ = +4.00×10-6 C/m2. Taking the positive direction to be upward (away from the plate), what is the vertical deflection of the electron after it has traveled a horizontal distance of 4.00 cm? Show all work. Include your explanation and show your calculation in...

  • A certain moving electron has a kinetic energy of 1.01 × 10−19 J. A. ) Calculate...

    A certain moving electron has a kinetic energy of 1.01 × 10−19 J. A. ) Calculate the speed necessary for the electron to have this energy. The mass of an electron is 9.109 × 10−31 kg. Answer in units of m/s. B.) Calculate the speed of a proton having a kinetic energy of 1.01 × 10−19 J and a mass of 1.673 × 10−27 kg. Answer in units of m/s.

  • 1. momentum. 2. charge. 3. impulse. 4. energy 5. velocity 014 (part 1 of 2) 10.0...

    1. momentum. 2. charge. 3. impulse. 4. energy 5. velocity 014 (part 1 of 2) 10.0 points Find the speed of an electron that has a kinetic energy of 1.18 eV. eV 1.602 x 1019 J Answer in units of m/s. 015 (part 2 of 2) 10.0 points Calculate the speed of a proton with a kinetic energy of 1.18 eV Answer in units of m/s. I Accessibility | Terms of Use | Privacy Policy 92018 College of Natural Sciences,...

  • A parallel-plate capacitor has capacitance 7.50 ?F. (a) How much energy is stored in the capacitor...

    A parallel-plate capacitor has capacitance 7.50 ?F. (a) How much energy is stored in the capacitor if it is connected to a 15.00-V battery? ?J (b) If the battery is disconnected and the distance between the charged plates doubled, what is the energy stored? ?J (c) The battery is subsequently reattached to the capacitor, but the plate separation remains as in part (b). How much energy is stored? ?J

  • 1) A 11.0-V battery is connected to a 4.40-μF capacitor. How much energy is stored in...

    1) A 11.0-V battery is connected to a 4.40-μF capacitor. How much energy is stored in the capacitor? J 2) Calculate the speed (in m/s) of an electron and a proton with a kinetic energy of 1.10 electron volt (eV). (The electron and proton masses are me = 9.11 ✕ 10−31 kg  and mp = 1.67 ✕ 10−27 kg.  Boltzmann's constant is  kB = 1.38 ✕ 10−23 J/K.) hint: Use the conversion 1 eV = 1.60 ✕ 10−19 J. (a) an electron? m/s...

  • For metallic cesium (Cs), the threshold energy is 1.95 eV (1 eV = 1.602·10−19 J). Find...

    For metallic cesium (Cs), the threshold energy is 1.95 eV (1 eV = 1.602·10−19 J). Find the threshold frequency and wavelength. In what part of the spectrum will Cs begin to emit photoelectrons? Describe the situation when the wavelength of the incident light is 530 nm. If applicable, find the kinetic energy and, if you are so inclined, the velocity of photoelectrons if Cs is irradiated with that light.

  • 1. A uniform electric field of magnitude 364 N/C pointing in the positive x-direction acts on...

    1. A uniform electric field of magnitude 364 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 2.80 cm. (a) What is the work done by the field on the electron? J (b) What is the change in potential energy associated with the electron? J (c) What is the velocity of the electron? magnitude m/s direction 2. Calculate the speed (in m/s) of an electron and a proton with a...

  • An isolated parallel-plate capacitor (not connected to a battery) has a charge of Q = 1.7×10−5C....

    An isolated parallel-plate capacitor (not connected to a battery) has a charge of Q = 1.7×10−5C. The separation between the plates initially is d = 1.2 mm, and for this separation the capacitance is 3.1×10−11F. Calculate the work that must be done to pull the plates apart until their separation becomes 2.6 mm, if the charge on the plates remains constant. The capacitor plates are in a vacuum. Express your answer using two significant figures. (unit in J)

  • 1) A uniform electric field of magnitude 411 N/C pointing in the positive x-direction acts on...

    1) A uniform electric field of magnitude 411 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 2.70 cm. (a) What is the work done by the field on the electron?    (b) What is the change in potential energy associated with the electron?    (c) What is the velocity of the electron? magnitude ms? direction ? (+x, -x, +y, -y) 2) A 11.0-V battery is connected to a 4.40-μF...

  • A parallel-plate capacitor has capacitance 9.50 uF. (a) How much energy is stored in the capacitor...

    A parallel-plate capacitor has capacitance 9.50 uF. (a) How much energy is stored in the capacitor if it is connected to a 7.00-V battery? (b) If the battery is disconnected and the distance between the charged plates doubled, what is the energy stored? (c) The battery is subsequently reattached to the capacitor, but the plate separation remains as in part (b). How much energy is stored? Need Help? Read It 13. -120 points OSColPhys1 19.5.064 XP A large capacitance of...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT