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

Author Question: An air sample is contaminated with 15O, which has a half-life of 2.03 min. One possible way to ... (Read 36 times)

Caiter2013

  • Hero Member
  • *****
  • Posts: 607
An air sample is contaminated with 15O, which has a half-life of 2.03 min.
 
  One possible way to minimize its hazard is to pass it through a long pipe to allow it to decay inside the pipe until it can be safely released into the atmosphere. If the oxygen moves at a speed of 1.1 m/s in the pipe, how long must the pipe be for the sample to have decayed to 3.0 of its original activity just as it leaves the pipe?
  A) 8.0 m B) 680 m C) 7.0 m D) 2.0 m

Question 2

A 0.140-kg baseball is dropped and reaches a speed of 1.20 m/s just before it hits the ground. It rebounds with a speed of 1.00 m/s. What is the change of the ball's momentum?
 
  A)
 
  0.0280 kgm/s upwards
  B)
 
  0.0280 kgm/s downwards
  C)
 
  0.308 kgm/s upwards
  D)
 
  0.308 kgm/s downwards
  E)
 
  0 kgm/s



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

uniquea123

  • Sr. Member
  • ****
  • Posts: 311
Answer to Question 1

B

Answer to Question 2

C




Caiter2013

  • Member
  • Posts: 607
Reply 2 on: Jul 29, 2018
Gracias!


Laurenleakan

  • Member
  • Posts: 309
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

For a complete list of videos, visit our video library