subject

Physics, 17.10.2021 21:00 tyannamonae

2. A sample of strontium-90 has an activity of 5000 Bq. After 120 years the activity has fallen to 625 Bq. What is the half life of strontium-90?

ansver

Answers: 2

Show answers

Another question on Physics

question

Physics, 22.06.2019 01:30

Afigure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 20.9 12000 200 3.33

Answers: 2

question

Physics, 22.06.2019 03:30

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

Answers: 3

question

Physics, 22.06.2019 04:30

Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?

Answers: 2

question

Physics, 22.06.2019 05:40

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

Answers: 1

You know the right answer?

2. A sample of strontium-90 has an activity of 5000 Bq. After 120 years the activity has fallen to 6...

Questions

question

Biology, 07.04.2020 21:41

14. In humans, straight hair (SS) and curly hair (CC) are co-dominant traits that result in hybrids that have wavy hair (SC). Cross a curly hair...

question

Mathematics, 07.04.2020 21:41

In attempting to solve the system of equations and , John graphed the two equations on his graphing calculator. Because he saw only one line, John wro...

question

Business, 07.04.2020 21:41

Unearned Services Revenue. The company charges $100 per month to spray a house for insects. A customer paid $600 on November 1 in advance for six trea...

question

Social Studies, 07.04.2020 21:41

Consistent with the social facilitation effect, Michaels and his colleagues (1982) found that when good pool players were observed, they did than whe...

question

Social Studies, 07.04.2020 21:41

Dr. Preston is a specialist who goes to areas that have been hit by natural disasters and works with teams there to manage the resulting crises among...

question

Business, 07.04.2020 21:41

What makes a self-managed team unique? Members of the team are given administrative oversight for their task area. Staff members are required to do ad...

question

Chemistry, 07.04.2020 21:41

In an experiment as described in the Principles section, 158 mL of O2 is collected over water. The mass of the O2 is measured to be 0.207 g, the tempe...

question

Mathematics, 07.04.2020 21:41

Please Help will award brainliest...

question

Mathematics, 07.04.2020 21:41

Two spinner are shown. Which best explains why one spinner is more likely to land a section labeled A than the other spinner? A: Spinner 1...

question

English, 07.04.2020 21:41

PLEASE HELP MEWhich sentence is wrote correctlyA.)The rich anf Spicy flavors of the homeade fried fish would make this walk with it....

question

History, 07.04.2020 21:41

What was the turning point of the Civil War...

question

English, 07.04.2020 21:41

Which beat explains how Anaya’s text structure establishes his voice in the excerpt...

question

Mathematics, 07.04.2020 21:41

Wich is an example of a statistical question Questions Question 1 How many pets does Alisha have at home? Question 2 What is...

question

Chemistry, 07.04.2020 21:41

The volume of an ideal gas in a container is 2.0 L what will be the volume of the gas if the pressure on the container is doubled while the temperatur...

question

Social Studies, 07.04.2020 21:41

When a twenty-first century researcher organizes every aspect of her study with close attention to the meanings that the respondents attach to their b...

question

Business, 07.04.2020 21:41

One of your customers is delinquent on his accounts payable balance. You’ve mutually agreed to a repayment schedule of $500 per month. You will charge...

question

Physics, 07.04.2020 21:41

Under many conditions, the center of mass of a system of particles can represent the system as a whole. But how far does this rule extend?

question

History, 07.04.2020 21:41

● What is the equal protection clause...

question

History, 07.04.2020 21:42

Majority of the battles were fought in the North? Or in the South?...

question

Social Studies, 07.04.2020 21:42

You dream about a monster chasing you and you realize later that the monster symbolizes the research paper that you have due in one of your classes. A...

More questions: Physics Another questions

Questions on the website: 13722363