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

Author Question: A concave mirror has A) no focal length. B) a positive or negative focal length ... (Read 113 times)

cool

  • Hero Member
  • *****
  • Posts: 570
on: Jul 29, 2018
A concave mirror has
 
  A)
 
  no focal length.
  B)
 
  a positive or negative focal length depending on the object position.
  C)
 
  a positive focal length.
  D)
 
  a negative focal length.
  E)
 
  a positive or negative focal length depending on the object size.

Question 2

An object is moving with constant non-zero velocity on the +x axis. The position versus time graph of this object is
 
  A)
 
  a horizontal straight line.
  B)
 
  a vertical straight line.
  C)
 
  a straight line making an angle with the time axis.
  D)
 
  a parabolic curve.
  E)
 
  a hyperbolic curve.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kingdude89

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

C


cool

  • Hero Member
  • *****
  • Posts: 570
Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


kingdude89

  • Sr. Member
  • ****
  • Posts: 336
Reply #3 on: Jul 29, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Continuous positive airway pressure (CPAP) device. The sleeping subject is receiving the benefits of Continuous positive airway pressure (CPAP) device. The sleeping subject is receiving the benefits of
negative feedback negative feedback
Empathy draws a more positive response from the patient because it is based on the willingness of th Empathy draws a more positive response from the patient because it is based on the willingness of th
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
Flow data for a healthy donor (top panel) and a HIV positive patient. CD3 is a T-cell marker, CD4 is ... Flow data for a healthy donor (top panel) and a HIV positive patient. CD3 is a T-cell marker, CD4 is ...
The cell wall of a Gram-negative bacterium, E. coli The cell wall of a Gram-negative bacterium, E. coli
Video: Cardiac Cycle (Part 1 of 4)

For a complete list of videos, visit our video library