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 34 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
Wow, this really help

bulacsom

  • Member
  • Posts: 329
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?

Medication errors are three times higher among children and infants than with adults.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Electric Charges Electric Charges
A 6-point socket fits the head of a bolt or nut on all sides. A 12-point socket can round off the ... A 6-point socket fits the head of a bolt or nut on all sides. A 12-point socket can round off the ...
Decimal Values as They Relate to the Location of the Decimal Point Decimal Values as They Relate to the Location of the Decimal Point
The slope of the curve y = ax^3 - bx^2 + cx - 3 at x = 2 is 5. If the point of inflection of the cur The slope of the curve y = ax^3 - bx^2 + cx - 3 at x = 2 is 5. If the point of inflection of the cur
Relationship Between the Atlas and the Axis. The Dens of the Axis Provides a Pivotal Point Around Wh Relationship Between the Atlas and the Axis. The Dens of the Axis Provides a Pivotal Point Around Wh
A genetic map showing the location of revertible (point) mutants of the rll region A genetic map showing the location of revertible (point) mutants of the rll region
Video: Blood Test Basics

For a complete list of videos, visit our video library