This topic contains a solution. Click here to go to the answer

Author Question: An object, located 90 cm from a concave lens, forms an image 30 cm from the lens on the same side as ... (Read 113 times)

madam-professor

  • Hero Member
  • *****
  • Posts: 584
An object, located 90 cm from a concave lens, forms an image 30 cm from the lens on the same side as the object. What is the focal length of the lens?
 a. -150 cm
  c. -36 cm
  b. -45 cm
  d. -180 cm

Question 2

A 4.00-L container holds half a mole of an ideal gas at a pressure of 18.5 atm. What is the gas temperature? (R = 0.0821 L  atm/mol  K)
 a. 1800 K
  c. 901 K
  b. 1190 K
  d. 450 K



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lorealeza

  • Sr. Member
  • ****
  • Posts: 345
Answer to Question 1

B

Answer to Question 2

A




madam-professor

  • Member
  • Posts: 584
Reply 2 on: Jul 28, 2018
:D TYSM


bitingbit

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Wow, this really help

 

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?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

For a complete list of videos, visit our video library