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
meriva
3 years ago
13

12) A neutral atom has two, eight, eight electrons in its first, second, and third energy levels.This information ________.

Physics
1 answer:
pentagon [3]3 years ago
3 0

Answer:

C.

Explanation:

Option C

The information given in the question tells us about the number of electrons in an atom and also the number of shells in the atom. So, we will come to know about the atomic number, size and chemical properties of the atom. But we cannot determine atomic mass. Atomic mass is a function of number of neutrons and protons.

You might be interested in
3 What is the displacement of a satellite when it makes a complete round along its circular path?​
kirill [66]

Answer:

0

Explanation:

The displacement is zero since it goes in a full circle and ends up where it started.

4 0
2 years ago
Some drops a ball off of the top of a 125-m-tall building. In this prob-lem, you will be solving for the time it takes the ball
Nimfa-mama [501]

Answer:

t = 5.05 s

Explanation:

This is a kinetic problem.

a) to solve it we must fix a reference system, let's use a fixed system on the floor where the height is 0 m

b) in this system the equations of motion are

              y = v₀ t + ½ g t²

where v₀ is the initial velocity that is v₀ = 0 and g is the acceleration of gravity that always points towards the center of the Earth

e)    y = 0 + ½ g t²

     t = √ (2y / g)

     t = √(2 125 / 9.8)

     t = 5.05 s

6 0
3 years ago
1.   A car travels along a straight road to the east for 100 meters in 4 seconds, then go the west for 50 meters in 1 second.
Alla [95]

Answer:

a.Distance = 150 m

b. Displacement = 50 m

Time lapsed = 5 seconds

Explanation:

a. Distance is the change in the position of an object.

The distance covered by the car = 100 + 50

                                                   = 150 m

b. Since displacement is a vector quantity,

Displacement of the car = 100 - 50

                                        = 50 m due east

c. Time elapsed is the time taken for the motion of the car starting from when its starts to when it stops.

Thus, the time elapsed = 4 + 1

                        = 5 seconds

4 0
3 years ago
A plate falls to the floor. When is its potential energy
Anna35 [415]

Answer:

I think it's 3

Explanation:

Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!

5 0
3 years ago
A football player with a mass of 85 kg wears a uniform and helmet that have a mass of 4.5 kg. The football player moves at 2.1 m
DochEvi [55]
The answer would be 187.95 kg.m/s.

To get the momentum, all you have to do is multiply the mass of the moving object by the velocity. 

p = mv

Where:
P = momentum
m = mass
v = velocity

Not the question is asking what is the total momentum of the football player and uniform. So we need to first get the combined mass of the football player and the uniform. 

Mass of football player = 85.0 kg
Mass of the uniform     = <u>  4.5 kg</u>
TOTAL MASS                  89.5 kg

So now we have the mass. So let us get the momentum of the combined masses. 

p = mv
   = (89.5kg)(2.1m/s)
   = 187.95 kg.m/s

5 0
3 years ago
Read 2 more answers
Other questions:
  • An undamped 2.89-kg horizontal spring oscillator has a spring constant of 24.3 n/m. while oscillating, it is found to have a spe
    14·1 answer
  • Find the probability density of a particle moving in an interval of 101o the box. The length of the one-dimensional box is 20x10
    7·1 answer
  • How do I convert 498.82 cg to mg
    15·2 answers
  • What are some physical properties of a star
    14·2 answers
  • What best accounts for the periodic trends seen in ionization energy?
    6·1 answer
  • Which of these is the universal law of gravitation? All matter is attracted and pulled downward toward the ground. Most matter i
    13·1 answer
  • What is one exsample of a closed economy​
    5·2 answers
  • Microwave ovens emit microwave energy with a wavelength of 12.1 cm. What is the energy of exactly one photon of this microwave r
    7·1 answer
  • (The answer is probably obvious for some but I'm not big on science. Not my cup of English-..I'm implying Enlish is more my styl
    9·1 answer
  • An electron travels 1.49 m in 7.4 µs (microsecWhat is its speed if 1 inch = 0.0254 m? Answer in units of in/min.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!