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
Svetllana [295]
3 years ago
5

Strontium-90 has a half-life of 29 years. In how many years will a 1 kg sample of strontium-90 decay and reduce to 0.25 kg of st

rontium-90?
Biology
2 answers:
m_a_m_a [10]3 years ago
7 0

Answer:

The weight of Strontium-90 will reduce to 0.25 Kg in 58 years.

Explanation:

Given -

Radioactive isotope sample of Strontium-90 = 1Kg

Half life of Strontium-90 = 29 years

After first half life (i.e 29 years), the weight of Strontium-90

= \frac{1}{2}\\= 0.5 Kg

After second half life (i.e 58 years), the weight of Strontium-90

= \frac{0.5}{2}\\= 0.25 Kg

Thus, the weight of Strontium-90 will reduce to 0.25 Kg in 58 years.

olasank [31]3 years ago
6 0
58 years.
1kg - 0 years
0.5kg - 29 years
0.25kg - 58 years
You might be interested in
Kevin is studying predator-prey interactions. One day he notices a spider eating a cricket caught in its web. Later that day, a
s344n2d4d5 [400]

Answer:

The correct answer is option - A. 0.

Explanation:

Producers are the organism that produces on their own. They do not depend on other organisms for their nutrition and energy such as green plants. They transfer energy and nutrition.

In the given scenario there is no producer present all are consumers of different levels. Cricket is a primary consumer, a spider is a secondary consumer and bird is the third consumer in this food chain.

Thus, the correct answer is option- A. 0.

4 0
3 years ago
I WILL GIVE BRAINLYIST
natali 33 [55]

The answer would be

A. can digest insects

6 0
3 years ago
Read 2 more answers
Easy 5th grade science please look at photo and answer!! giving brainliest
exis [7]

Answer:

What happens after water particles returns to the ocean is that it'll evaporate over the island, and precipitation happens :3

Explanation:

:3

3 0
3 years ago
Social factors that can lead to psychological problems as a result of obesity include which of the following? A. High blood pres
Sindrei [870]

Answer:

D. Discrimination

Explanation:

Discrimination is the correct answer.

4 0
2 years ago
Read 2 more answers
there are few calls in the vocal communication system of apes, and any particular call is produced only when the animal finds it
True [87]

They communicate with smells, sounds, visual messages, and touching.

<h3>Vocal Communication in Primates:</h3>

Animals frequently communicate through voice. In order to trace the evolutionary roots of our sophisticated communication system, researchers frequently study vocal communication in nonhuman primates (primates) with the goal of detecting similarities and differences between human language and speech. Listeners appear to comprehend the meaning of the sounds made by primates in response to particular occurrences, such as the discovery of a particular predator. Although this form of communication and human referential words appear to be similar on the surface, the mental processes that underpin them may be extremely different.

There is far more disagreement regarding whether the production of ape vocalizations and language share any similarities, despite the fact that generally speaking, the flexibility displayed by primate receivers may exhibit some similarities with humans. It is generally acknowledged that primates, unlike humans, cannot produce novel vocalizations.

Learn more about communication here:

brainly.com/question/17285920

#SPJ4

7 0
2 years ago
Other questions:
  • In your own words, describe the base-pairing rules in any DNA molecule.
    14·2 answers
  • Item 19
    13·1 answer
  • Which might be a cause for the increase in songbirds at the feeders?
    8·2 answers
  • Directions: Answer the following question(s).
    9·1 answer
  • According to the text, the interaction of what three developmental domains shapes human development?
    13·1 answer
  • People with type _______ diabetes have an autoimmune disease.
    12·1 answer
  • Some studies have indicated that our eyes naturally travel from bottom left to top right, so putting the diagonal along that pat
    5·2 answers
  • What is the meaning of the term abscission?
    12·1 answer
  • Hemophilia is a sex-linked, recessive trait. Which of the following describes the probability of hemophilia in the offspring of
    11·1 answer
  • What is an adverse effect of Rocuronium, Atracurium, Tubocurarine, Pancuronium?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!