This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A conducting sphere of radius 20.0 cm carries an excess charge of +15.0 C, and no other charges are ... (Read 30 times)

londonang

  • Hero Member
  • *****
  • Posts: 540
on: Jul 29, 2018
A conducting sphere of radius 20.0 cm carries an excess charge of +15.0 C, and no other charges are present. (k = 1/40 = 8.99  109 N  m2/C2 )
 
  The potential (relative to infinity) due to this sphere at a point 12.0 cm from its center is closest to
  A) zero.
  B) 674 kV.
  C) 1130 kV.
  D) 3380 kV.
  E) 9380 kV.

Question 2

How fast must a hydrogen atom be traveling for its kinetic energy to be just enough to excite the ground-state atom to its first excited state in a collision? (1 eV = 1.60  10-19 J, mH  mproton = 1.67  10-27 kg)
 
  A) 44.2 km/s
  B) 21.7 km/s
  C) 66.5 km/s
  D) 113 km/s
  E) 51.0 km/s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

31809pancho

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

A


londonang

  • Member
  • Posts: 540
Reply 2 on: Jul 29, 2018
Wow, this really help

gcook

  • Member
  • Posts: 343
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Comparison of the radius of fruits produced by native and introduced species of Sapindaceae Comparison of the radius of fruits produced by native and introduced species of Sapindaceae
Evolution of the Sun's luminosity, radius and effective temperature compared to the present Sun Evolution of the Sun's luminosity, radius and effective temperature compared to the present Sun
Electric Charges Electric Charges
A sphere, 0.30 m in radius, has a surface emissivity of 0.48 and is at a temp A sphere, 0.30 m in radius, has a surface emissivity of 0.48 and is at a temp
Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an ... Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an ...
Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an ... Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an ...
Video: Import of Dietary Glucose from Intestines to Bloodstream

For a complete list of videos, visit our video library