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

Author Question: At 9 a.m. on Monday a radioactive sample contained four million nuclei. At 9 a.m. on Friday three ... (Read 24 times)

justinmsk

  • Hero Member
  • *****
  • Posts: 524
on: Jul 28, 2018
At 9 a.m. on Monday a radioactive sample contained four million nuclei. At 9 a.m. on Friday three million of these nuclei had decayed. The half-life of this sample is:
 a. 5 days b. 4 days c. 3 days d. 2 days e. 1 day

Question 2

An airplane flies in a horizontal circle of radius 500 m at a speed of 150 m/s. If the radius were changed to 1 000 m, but the speed remained the same, by what factor would its centripetal acceleration change?
 a. 0.25
  b. 0.50
  c. 1.00
  d. 2.00
  e. 4.00


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mcinincha279

  • Sr. Member
  • ****
  • Posts: 316
Reply #1 on: Jul 28, 2018
Answer to Question 1

d

Answer to Question 2

B


justinmsk

  • Member
  • Posts: 524
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

bdobbins

  • Member
  • Posts: 326
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Cultured HeLa cells have been stained with Hoechst turning their nuclei blue Cultured HeLa cells have been stained with Hoechst turning their nuclei blue
The Sleep/Waking Flip-Flop According to Saper et al. (2001), the major sleep-promoting region (the v The Sleep/Waking Flip-Flop According to Saper et al. (2001), the major sleep-promoting region (the v
Sample Program for Changing Daily Caloric Intake Sample Program for Changing Daily Caloric Intake
Sample Items from the Brief Multidimensional Measure of Religiousness/Spirituality (BMMRS) Sample Items from the Brief Multidimensional Measure of Religiousness/Spirituality (BMMRS)
Sample of résumé content. Sample of résumé content.
The Radioactive Decay Curve The Radioactive Decay Curve
Video: Glucose anabolism reactions: Glycogenolysis and Gluconeogenesis

For a complete list of videos, visit our video library