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 78 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
Gracias!

covalentbond

  • Member
  • Posts: 336
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

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
Mosaic of Charge-Coupled Devices (CCDs) Mosaic of Charge-Coupled Devices (CCDs)
Ionic Radius Ionic Radius
Excess heat capacity chart Excess heat capacity chart
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 ...
A highway curve of radius 80 m is banked at 45°. Suppose that an ice storm hits, and the ... A highway curve of radius 80 m is banked at 45°. Suppose that an ice storm hits, and the ...
Video: Hyperglycemia Animation

For a complete list of videos, visit our video library