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
ankoles [38]
3 years ago
11

If element X has 39 protons, how many electrons does it have?

Physics
1 answer:
lara31 [8.8K]3 years ago
8 0
Hi. There would be 39 electrons since in atoms there are the same amount of both protons and electrons. Good luck.
You might be interested in
Matthew is looking at two different atoms. One has 8 protons and 10 neutrons. The other substance has 8 protons and 12 neutrons.
Lunna [17]

Answer:

They are the same element.

Explanation:

Atom >>>>> Proton >>>> Neutron

A >>>>>>>> 8 >>>>>>>>> 10

B >>>>>>>> 8 >>>>>>>>> 12

From the table above we can see that both atoms have the same proton number.

Therefore, they are the same element because they have the same proton number which means that they have the same atomic number. The element in this case is existing as an isotope in that the atoms have the same proton number but different neutron number.

6 0
3 years ago
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 130-kg laser sensor that measures the thi
umka21 [38]

Answer:T=1316.21 N

Explanation:

The tension has two components: Vertical and Horizontal. The

horizontal component is ma, the vertical component is mg. Using

Pythagoras theorem, we can find the tension as:

T=((ma)^2 (mg)^2)^(1/2)

So

T=((129*2.84)^2 (129*9.8)^2)^(1/2)

T=1316.21 N

8 0
3 years ago
Which of the following most likely happens when the temperature of a chemical reaction is increased?
Diano4ka-milaya [45]
Molecules Speed Up because the other three options only occur when the temperature is decreased.
5 0
3 years ago
Read 2 more answers
Which of the following is a unit of volume in the English system of measurement? (4 points)
Levart [38]
The answer is gallons.
3 0
3 years ago
Read 2 more answers
A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 0.0055 m/s2 less than that at sea leve
pshichka [43]
Gs*rs^2 = gm*rm^2 
<span>rm = rs*√gs/gm </span>
<span>rm = 6370*√9.83/(9.83-0.009) = 6372.92 </span>
<span>mountain observatory is placed at an altitude worth 2920 m asl

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.
</span>
7 0
4 years ago
Other questions:
  • when water in a brook or system of pipes flows from a wide region to a narrow region, the speed of water in the narrow region is
    12·1 answer
  • What does the phrase rise over run refer to when defining slope
    5·1 answer
  • A wave is a disturbance that transfers energy through medium from one place to another.  Do the particles in the medium travel w
    11·1 answer
  • A bar-magnet with magnetic moment 2.5 Am^2 is placed in a homogeneous magnetic field (of 0.1 T that is directed along the z-axis
    5·1 answer
  • Someone help me with this ASAP!!
    15·2 answers
  • On an acceleration-time graph, what are the units for acceleration
    7·1 answer
  • What is the primary force help suspension bridges use cables to hold there spans up
    10·2 answers
  • An impulse of 12.2kg m/s is delivered to an object whose initial momentum is 4.5kgm/s. What is the object's final momentum?
    12·1 answer
  • Astronauts wear special device on the ear why give reason
    8·2 answers
  • How many carbon atoms placed end to end would equal the width of a human hair
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!