1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mandarinka [93]
3 years ago
6

A radioactive sample has a count rate of 10,000 Bq. 24 days later the activity has fallen to 625 Bq. What is the half-life of th

e sample?
Physics
1 answer:
joja [24]3 years ago
6 0

Answer:

10000 Bq / 625 Pq = 16

Radioactivity has decreased by a factor of 16

2^4 = 16

So the sample has gone thru 4 half-lives

24 da / 4 = 6 da

6 da is the half-life

You might be interested in
Explain how a higher temperature affects the efficiency of transmitting electricity
Slav-nsk [51]
Increasing ambient temperature decreases efficiency and load carrying capacity of electric transmission lines.
Increased molecular movement in the conductors as temperature rises, increases resistance to current flow.
6 0
3 years ago
If a snail travels at 5 m/s, how far will it travel in 90 seconds?
labwork [276]

Answer:

in 90 seconds It'll travel 450m At constant speed of 5m/s

8 0
3 years ago
Read 2 more answers
check the file.........................................................................................................
White raven [17]

What is meant by the number of complete oscillation made by an oscillating body in 10 seconds is 500 complete oscillations is that the  frequency of the oscillating body is 50Hz

<h3>What is frequency?</h3>

Frequency of an oscillating body can be defined as the number of complete oscillations per unit time

Frequency is measured in hertz (Hz).

Also, the frequency of 1Hz is one oscillation per second.

frequency = number of oscillations/ time taken

frequency = 500/10 = 50 Hz

Thus, what is meant by the number of complete oscillation made by an oscillating body in 10 seconds is 500 complete oscillations is that the  frequency of the oscillating body is 50Hz

Learn more about frequency here:

brainly.com/question/1199084

#SPJ1

6 0
2 years ago
What would happen to plasma membrane if proteins were absent
Inessa [10]

Cell membranes are 50% protein, the proteins are responsible for many biological processes. If the proteins were absent the membrane could not carry out it's intended purpose.

8 0
4 years ago
Ummm Help? What best describes the expectancy theory of motivation?
iogann1982 [59]

Answer:

I strongly feel its 1.

Explanation:

the expectancy theory of motivation is basically getting an reward for a great accomplishment so 1 would make the most sense in this question, lmk if its wrong

4 0
3 years ago
Other questions:
  • A rolling ball will eventually stop rolling. Which describes one reason why this happens? The ball eventually loses its energy.
    11·1 answer
  • Which type of listening response includes the use of head nods, facial expressions, and short utterances such as "uh-huh" that s
    8·1 answer
  • when a man travel from hilly region to terai region what will happen to his weight ? explain with reason.​
    13·1 answer
  • An eagle carry a trout flies above a lake along a horizontal path. The eagle drops the trout from a height of 6.1m. The fish tra
    5·1 answer
  • Psychologists define stress as?
    12·1 answer
  • In world war 1 , Multiple reflection was used in submarines. How multiple reflection works and helps in such situation?
    12·1 answer
  • Please answer this soon
    6·1 answer
  • Please answer this question ​
    12·1 answer
  • What is the definition of Heat Transfer
    5·2 answers
  • Pluto is 39.5 AU from the sun on average. How long is one year on Pluto?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!