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

Author Question: A convex spherical mirror with a radius of 50 cm has a 4.0 cm tall object placed 100 cm in front of ... (Read 61 times)

ETearle

  • Hero Member
  • *****
  • Posts: 580
on: Jul 29, 2018
A convex spherical mirror with a radius of 50 cm has a 4.0 cm tall object placed 100 cm in front of it. What is the position of the image relative to the mirror?
 
  A) 25 cm behind the mirror
  B) 20 cm behind the mirror
  C) 25 cm in front of the mirror
  D) 100 cm in front of the mirror
  E) 20 cm in front of the mirror

Question 2

A wire of resistivity  must be replaced in a circuit by a wire of the same material but four times as long. If, however, the total resistance is to remain as before, the diameter of the new wire must
 
  A) be two times the original diameter.
  B) be the same as the original diameter.
  C) be one-fourth the original diameter.
  D) be one-half the original diameter.
  E) be four times the original diameter.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ilianabrrr

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

A


ETearle

  • Member
  • Posts: 580
Reply 2 on: Jul 29, 2018
Excellent

apple

  • Member
  • Posts: 352
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Myopia (nearsightedness). In the uncorrected top figure, the image comes into focus in front of the Myopia (nearsightedness). In the uncorrected top figure, the image comes into focus in front of the
Rinne test: A. Place the base of the tuning fork on the mastoid process. B. Place tuning fork in fro Rinne test: A. Place the base of the tuning fork on the mastoid process. B. Place tuning fork in fro
A typical oil pump mounted in the front cover of the engine that is driven by the crankshaft. A typical oil pump mounted in the front cover of the engine that is driven by the crankshaft.
Formation of an Occluded Front Formation of an Occluded Front
Mirror recognition and self-naming develop at almost exactly the same time Mirror recognition and self-naming develop at almost exactly the same time
A 2.10-kg hammer is transported to the Moon. The radius of the Moon is 1.74 × 106 m, its mass ... A 2.10-kg hammer is transported to the Moon. The radius of the Moon is 1.74 × 106 m, its mass ...
Video: Stomach peristalsis - Movement of Food Through the Small Intestine

For a complete list of videos, visit our video library