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 9 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

Mochi

  • Member
  • Posts: 300
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

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?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Dew point/temperature relationships in (a) unsaturated air and saturated air (b and c). Dew point/temperature relationships in (a) unsaturated air and saturated air (b and c).
How to find the point of intersection of two straight lines by graphing How to find the point of intersection of two straight lines by graphing
Finger pressure to a trigger point. Finger pressure to a trigger 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
Constructing a Three-Point Recombination Map Constructing a Three-Point Recombination Map
Constructing a Three-Point Recombination Map Constructing a Three-Point Recombination Map
Video: Chemical Synapse Animation

For a complete list of videos, visit our video library