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
andreev551 [17]
2 years ago
11

Atoms with certain characteristics are radioactive. Which is least likely to be radioactive? O A. all atoms with an atomic numbe

r over 83 B. all atoms with twice as many neutrons as protons C. all atoms with an atomic number under 40 O D. all atoms with half as many neutrons as protons​
Physics
1 answer:
Luden [163]2 years ago
8 0

Answer:

The answer an be the option A.

Explanation:

Because radioactive substances have atomic number greater than 82.

You might be interested in
In your own words, explain what a field is in science. Use specific examples to support your explanation.
tresset_1 [31]

Answer:

Field, In physics, a region in which each point is affected by a force.

Explanation:

4 0
3 years ago
The ratio of present ages of sunanya
kykrilka [37]

hope it helps

plz mark brainliest

4 0
3 years ago
What is matter, atom, molecules?
bagirrra123 [75]

matter is a solid liquid or gas , a atom is a basic unit of a chemical element and a molecule is a group of atoms together

6 0
3 years ago
25 PTs
Nuetrik [128]
Answer:
They are both wrong!

Liquid oxygen really is a pale blue color.
I’ve seen it.

And they cant say that liquid and solid oxygen is blue which makes the sky blue because they’re not and it doesn’t make up for the color of the sky.

The sky is actually blue because It reflects more light than It can absorb
aka Rayleigh Scattering.

-HOPE THAT HELPED
8 0
3 years ago
horizontal clothesline is tied between 2 poles, 14 meters apart. When a mass of 3 kilograms is tied to the middle of the clothes
lbvjy [14]

Answer:

The tension is  T =  103.96N

Explanation:

The free body diagram of the question is shown on the first uploaded image From the question we are told that

           The distance between the two poles is D =14 m

          The mass tied between the two cloth line is  m = 3Kg

         The distance it sags is d_s = 1m

The objective of this solution is to obtain the magnitude of the tension on the ends of the  clothesline

Now the sum of the forces on the y-axis is zero assuming  that the whole system is at equilibrium

       And this can be mathematically represented as

                             \sum F_y = 0

 To obtain \theta we apply SOHCAHTOH Rule

 So    Tan \theta = \frac{opp}{adj}

          \theta = tan^{-1} [\frac{opp}{adj} ]

            = tan^{-1} [\frac{1}{7}]

          =8.130^o

=>  \  \ \ \ \ \ \ \ 2T sin\theta -mg =0

=>  \  \ \ \ \ \ \ \ T =\frac{mg}{2 sin\theta}

=>  \  \ \ \ \ \ \ \ T = \frac{3 * 9.8 }{2 sin \theta }

=>  \  \ \ \ \ \ \ \  T =\frac{29.4}{2sin(8.130)}

=>  \  \ \ \ \ \ \ \  T = 103.96N

             

                 

5 0
3 years ago
Read 2 more answers
Other questions:
  • With mechanical waves, what is moving and what stays in roughly the same place?
    11·1 answer
  • If the direction of a magnetic field around a vertical electrical wire is counter clockwise, what direction is the electrical cu
    14·1 answer
  • What is the name of a scientist that studies the Movment of living things?
    8·1 answer
  • Describe what happens to the electric field lines when two objects with unlike charges are brought near each other.
    5·2 answers
  • A 350-kg sailboat has an acceleration of 0.62 m/s2 at a angle of 64 degrees north of east find the magnitude and direction of th
    9·1 answer
  • A 3.1-kilogram gun initially at rest is free to
    11·2 answers
  • The fact that your eyes rotate in their sockets, either getting closer or farther from each other, as an object changes its dist
    6·1 answer
  • In a car lift, compressed air exerts a force on a piston with a radius of 2.62 cm. This pressure is transmitted to a second pist
    10·1 answer
  • Two 100kg bumper cars are moving towards eachother in oppisite directions. Car A is moving at 8 m/s and Car B at -10 m/s when th
    5·1 answer
  • The spacecraft that really gave scientists their first good close-up look at the planet Mercury was:
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!