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
valkas [14]
2 years ago
15

The half-life of Cs-137 is 30.2 years. If the initial mass of the sample is 1.00 kg, how much will remain after 151 years?

Physics
1 answer:
Andru [333]2 years ago
8 0

Answer:can someone help

Explanation:

You might be interested in
Which element has 7 valence electrons?
wlad13 [49]

the element has 7 valance electrons is CI:Chlorine

7 0
2 years ago
HELP!!!!
kykrilka [37]

Answer:

Clouds form when below the dew point

4 0
3 years ago
3. a) If the distance between two objects increases by a factor of 5 (5),
irina [24]

Answer:

Answer for A

Explanation:

F1=GmM/r1^2

If r2 becomes r2=5r

F2=GmM/(25r^2)

Multiply with 25 gives to maintain the same force

I.e.,25F2=F1

F2=G(25m)M/25r^2=F1

By the factor 25 would change to increase to same.

3 0
2 years ago
A feris wheel is turning at a constant speed of 5m/s is it not accelerating ,true or false
erma4kov [3.2K]

Answer:no it is staying the same speed

Explanation:

6 0
3 years ago
7. A toy car of mass 1.2 kg is driving vertical circles inside a hollow cylinder of radius 2.0m. It is moving at a constant spee
wlad13 [49]

Answer:

a)

N_{top}=9.8N\\N_{bottom}=33.4N

b) v_{min}=4.4m/s

Explanation:

The net force on the car must produce the centripetal acceleration necessary to make this circle, which is a_{cp}=\frac{v^2}{R}. At the top of the circle, the normal force and the weight point downwards (like the centripetal force should), while at the bottom the normal force points upwards (like the centripetal force should) and the weight downwards, so we have (taking the upwards direction as positive):

-m\frac{v^2}{R}=-N_{top}-mg\\m\frac{v^2}{R}=N_{bottom}-mg

Which means:

N_{top}=m\frac{v^2}{R}-mg=(1.2kg)\frac{(6m/s)^2}{2m}-(1.2kg)(9.8m/s^2)=9.8N\\N_{bottom}=m\frac{v^2}{R}+mg=(1.2kg)\frac{(6m/s)^2}{2m}+(1.2kg)(9.8m/s^2)=33.4N

The limit for falling off would be N_{top}=0, so the minimum speed would be:

0=m\frac{v_{min}^2}{R}-mg\\v_{min}=\sqrt{Rg}=\sqrt{(2m)(9.8m/s^2)}=4.4m/s

3 0
2 years ago
Other questions:
  • A 0.0427 kg racquet-ball is moving
    6·1 answer
  • Two large books are stacked on top of each other on a table . The mass of each book is 6.5Kg Given that the coefficient of stati
    13·1 answer
  • Your teacher's car can go from rest to 25 m/s (≈55 mph) in 10 seconds. The car's velocity changes at a uniform rate. Below is a
    10·1 answer
  • List 2 organelles that were NOT visible using a light microscope, but can be found in most animal cells?
    8·1 answer
  • What was the initial velocity of a robot that took 5 m to get to final velocity of 19 m/s at a rate of 3 m/s/s?
    12·1 answer
  • C) 12g/cm d) 0.2g/cm
    5·1 answer
  • What is ther atomic number of an element that has 2 electrons, 3 protons,<br> and 4 neutrons?
    14·1 answer
  • Describe the difference between a transverse wave and longitudinal wave. Include the parts that you would find on a transverse w
    8·2 answers
  • Explain how conduction, convection, and radiation occur involving a campfire
    9·1 answer
  • What is optics?<br><br> Need Proper explanation in your own words!!!
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!