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

Author Question: Four point charges are on the rim of a circle. The charges are (in mC) +0.50, +3.0, -1.0, -0.50 . If ... (Read 10 times)

Redwolflake15

  • Hero Member
  • *****
  • Posts: 569
on: Jul 28, 2018
Four point charges are on the rim of a circle. The charges are (in mC) +0.50, +3.0, -1.0, -0.50 . If the electrical potential at the circle's center due to the +0.5 charge alone is 4.5  104 V, what is the total potential at the center due to the four charges combined?
 a. 18  104 V
  c. zero
  b. 4.5  104 V
  d. -4.5  104 V

Question 2

A helicopter stays aloft by pushing large quantities of air downward every second. What mass of air must be pushed downward at 30.0 m/s every second to keep a 1000 kg helicopter aloft?
 a. 120 kg
  c. 327 kg
  b. 245 kg
  d. 490 kg


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

phuda

  • Sr. Member
  • ****
  • Posts: 348
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

C


Redwolflake15

  • Member
  • Posts: 569
Reply 2 on: Jul 28, 2018
YES! Correct, THANKS for helping me on my review

adf223

  • Member
  • Posts: 304
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

McBurney’s point is the common location of pain in children and adolescents with appendicitis. McBurney’s point is the common location of pain in children and adolescents with appendicitis.
Trig Degrees/Radians unit circle Trig Degrees/Radians unit circle
Stressing that education reproduces a country’s social class system, conflict theorists point out ... Stressing that education reproduces a country’s social class system, conflict theorists point out ...
How to verify that the center of a circle lies on the right bisector a cord How to verify that the center of a circle lies on the right bisector a cord
Major marma point locations. Major marma point locations.
Summary of the effects on transcription levels of different point mutations Summary of the effects on transcription levels of different point mutations
Video: Methods that regulate pH

For a complete list of videos, visit our video library