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 99 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?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

The longest a person has survived after a heart transplant is 24 years.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Muscle length versus isometric force Muscle length versus isometric force
I'm Positive! I'm Positive!
When the exhaust is lean, the PCM applies a positive current into the pump cell. When the exhaust is lean, the PCM applies a positive current into the pump cell.
How to plot a sine function with a negative amplitude and phase shift (Question 3 of 3) How to plot a sine function with a negative amplitude and phase shift (Question 3 of 3)
A particle confined in a rigid one-dimensional box (an infinite well) of length 17.0 fm has an ... A particle confined in a rigid one-dimensional box (an infinite well) of length 17.0 fm has an ...
Video: Chromosome structural organization/ Mechanisms for chromosome movement Animation

For a complete list of videos, visit our video library