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
HELP ME!!
alexdok [17]

Answer:

Honey how can i draw you cant draw here

Explanation:

I wish i can help you

3 0
2 years ago
A tub of water is placed in a small room and heat is removed from the room. What will most likely occur if enough heat is remove
NARA [144]

Answer:

(A)The water will freeze.

Explanation:

Heat is the energy that when transferred causes change in temperature. If heat is added to a body by some process the bodies temperature increases and if heat is removed from a body by some process the temperature reduces.

In this case if enough heat is removed from the room the internal movement of the water particles will slow down causing the water to form crystal lattice thus forming ice. So, the water will freeze.

6 0
3 years ago
Read 2 more answers
A 5000 kg African elephant has a resting metabolic rate of 2500 W. On a hot day, the elephant's environment is likely to be near
alina1380 [7]

Answer:

36 kg

Explanation:

To answer this question, a few assumptions have to be made:

  • That the temperature on the day is 35 °C
  • That all the heat from the elephant is goes to warming/evaporating the water on the surface of the elephant

Energy released per hour = 2500 J/s * 3600 s = 9 000 000 J

Q = mcΔT

9 000 000 J= m *4.186 J/g-K * (373K - 308K) + m*2260 J/g

m =  36 000 g = 36 kg

3 0
3 years ago
Please help ASAP please
Alex_Xolod [135]

Answer:

14

Explanation:

6 0
2 years ago
Why does a gymnast rub powder on his hands before exercising on a set of parallel bars? (I need a scientific answer)
dlinn [17]

<u>Answer</u>

To increase friction for a better grip.

<u>Answer</u>

Most human beings do sweat hands especially on the palm. When this happens the person will not have a good grip of heavy objects because they will slide/slip from the hand.

<em>By applying the powder, you are trying to make the hand dry hence increasing the friction for a better grip. </em>

If the gymnast doesn't do this the parallel bars may slip from the hands and injure himself or herself.

4 0
2 years ago
Read 2 more answers
Other questions:
  • 32. Only a small percentage of the energy
    13·1 answer
  • In space, astronauts don’t have gravity to keep them in place. That makes doing even simple tasks difficult. Gene Cernan was the
    13·1 answer
  • **HELP ASAP**
    13·1 answer
  • A 45-kg box is being pushed a distance of 6.4 m across the floor by a force P with arrow whose magnitude is 170 N. The force P w
    13·1 answer
  • The ______________of matter depends upon how close the individual particles are together.
    13·1 answer
  • Which scientist was the first to accurately measure the speed of light?
    10·2 answers
  • If a car takes a banked curve at less than a given speed, friction is needed to keep it from sliding toward the inside of the cu
    5·2 answers
  • A wave travels from Medium 1 (light like slinky) into Medium 2 (heavy and rigid like snakey). Which property or properties of th
    5·1 answer
  • Based on the images, what conclusion can Mariam make about fish and mammals?
    5·1 answer
  • The first step in responding to any sports injury is to __________.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!