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
alexgriva [62]
3 years ago
11

After two hours, 1/16 of the initial amount of a certain radioactive isotope remains undecayed. The half-life of the isotope is:

Physics
1 answer:
AlekseyPX3 years ago
7 0
The half life is 30 minutes.
30 mins- 1/2 left
60 mins- 1/4 left
90 mins- 1/8 left
120 mins- 1/16 left
120 mins= 2 hours
You might be interested in
Describe what would happen if you rubbed a mineral with a Mohs hardness value of 7 against a mineral with a value of 5?
chubhunter [2.5K]
The mineral with Mohs hardness would be scratched because the mineral with Mohs 7 hardness is stronger than the Mohs 5 mineral. Eventually, that mineral would turn into dust if you kept rubbing it.
8 0
3 years ago
An egg of mass 0.060 kg is dropped from the top of a building. Just before it reaches the ground, it has a total kinetic energy
3241004551 [841]

The velocity is 14 m/s

The parameters given on the question are

mass= 0.060 kg

kinetic energy= 5.9 joules

K.E= 1/2mv²

5.9= 1/2 × 0.060 × v²

5.9= 0.5 × 0.060v²

5.9= 003v²

v²= 5.9/0.03

v²= 196.66

v= √196.66

v= 14 m/s

Hence the velocity of the egg before it strikes the ground is 14 m/s

brainly.com/question/2084569?referrer=searchResults

3 0
3 years ago
What causes the mechanical advantage of the inclined plane to be less than that of the lever? 30 points !!!
gayaneshka [121]
Moving an object up an inclined plane<span> requires </span>less<span>force </span>than<span> lifting it straight up, at a cost of an increase in the distance moved. The </span>mechanical advantage<span>of an </span>inclined plane<span>, the factor by which the force is reduced, is equal to the ratio of the length of the sloped surface to the height it spans.</span>
8 0
3 years ago
If a tree falls in the woods and nobody is there to hear it, does it really make noise
marshall27 [118]
Ye sit does. But since people weren’t there to hear it, doesn’t mean that it didn’t make a sound.
4 0
3 years ago
Read 2 more answers
What's the population of people with six packs
Iteru [2.4K]
About half of the people mostly MEN..?
5 0
3 years ago
Other questions:
  • Using the information from Paul Hewitt's Conceptual Development Practice Page 25-1 and the image below, answer the following que
    14·1 answer
  • A sample of a solid nonmetal is compared to a sample of a solid metal. Both samples have the same volume. What is the most likel
    5·2 answers
  • Which of these waves cannot travel in a vacuum?
    13·2 answers
  • If all the strings on the guitar in the picture were plucked and allowed to vibrate freely, the string at the top would produce
    12·2 answers
  • While walking along the shore of a lake Travis felt a cold breeze. What type of heat energy transfer is this an example of?
    7·1 answer
  • We can look at the band structure of an element to get an idea of how many electronsper atom participate in conduction. We can a
    15·1 answer
  • Two children hang by their hands from the same tree branch. The branch is straight, and grows out from the tree trunk at an angl
    6·1 answer
  • What does it mean to say that scientific models are open to change?
    13·2 answers
  • You and your little sister go to the park in cheetah started to go down the plastic slide. On her way down to euros out ouch! Wh
    12·1 answer
  • 3. Assume that a sample decays with a given half-life. Will you be able to observe when the sample has completely decayed? Why o
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!