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
Roman55 [17]
3 years ago
5

What does the atomic number tell us about an atom of a certain element?

Physics
1 answer:
Setler79 [48]3 years ago
4 0
It tells us the number of protons that are present in the nucleus, the positively charged region of that atom.
You might be interested in
Where else could Snell’s law be useful in determining the path of a light ray in your everyday life?
Musya8 [376]

Answer:

Contact glasses.

Explanation:

-Anytime you put on a pair of glasses, or see light bend through a glass of water or a prism, this rule is in action.

-In short, Snell's law governs the angle by which electromagnetic radiation such as light refracts, or changes direction, as it passes from one material to another and slows down.

6 0
3 years ago
Una locomotiva traina un solo vagone, che ha la sua stessa massa, con la forza di
gregori [183]

Answer:

c)    F = 16000 N

Explanation:

For this exercise we use Newton's second law

         F = ma

they tell us that adding the other wagons the acceleration of the locomotive must be maintained

 

      F = m a

by adding the other four wagons

mass = 4 no

therefore to maintain the force you must also raise the same factor

         Fe = 4Fo

         Fe = 4 4000

         F = 16000 N

3 0
3 years ago
A balloon is released from a tall building. The total mass of the balloon including the enclosed gas is 2.0 kg. Its volume is 5.
AleksandrR [38]

(B) The balloon will rise because the upward buoyant force is greater than its weight.

Explanation:

In order to evaluate what happens to the balloon, we need to compare the magnitude of the two forces acting on the balloon:

- Its weight, W, acting downward

- The buoyant force, B, acting upward

The weight of the balloon is given by:

W=mg

where

m = 2.0 kg is the mass of the balloon

g=9.8 m/s^2 is the acceleration of gravity

Substituting,

W=(2.0)(9.8)=19.6 N

The buoyant force on the balloon is given by:

B=\rho V g

where

\rho = 1.3 kg/m^3 is the air density

V=5.0 m^3 is the balloon's volume

g=9.8 m/s^2 is the acceleration of gravity

Substituting,

B=(1.3)(5.0)(9.8)=63.7 N

We observe that the buoyant force B is larger than the weight, so the balloon will accelerate upward, and the correct answer is

(B) The balloon will rise because the upward buoyant force is greater than its weight.

#LearnwithBrainly

3 0
2 years ago
Which type of fitness is not based on performance?
Aneli [31]
Fitness can be measured during the actual performance.
Which means that there are a lot of factors that can affect agility, speed, and coordination beside the physical factors itself. Meanwhile, flexibility solely depends on the physical Factors.


The answer is flexibility .


Hope this helps (:
4 0
3 years ago
A student throws a heavy red ball horizontally from a balcony of a tall building with an initial speed v0. At the same time, a s
liraira [26]

Without air resistance, both balls reach the ground at the same instant.

Neither horizontal motion nor weight affects vertical motion.

6 0
3 years ago
Other questions:
  • The actions of an employee are not attributable to the employer if the employer has not directly or indirectly encouraged the em
    6·1 answer
  • The length of the mercury thread is found to be 4cm and 24cm at ice point and steam point respectively on an ungraduated thermom
    15·1 answer
  • Convert 3402kgm/s to 20000Newtons
    8·1 answer
  • What is density of a 36g object with a volume of 15
    7·1 answer
  • The gauge pressure in the tires of your car is 210 kPa (30.5 psi) when the temperature is 25°C (77 °F). Several days later it is
    10·1 answer
  • How much work did the movers do (horizontally) pushing a 170-kg crate 10.2 m across a rough floor without acceleration, if the e
    14·1 answer
  • The graph below shows the velocity of a car over time.
    7·2 answers
  • Describe the relationship between radius and mass?
    5·2 answers
  • g What is the separation between their paths in meters when they hit a target after traversing a semicircle
    14·1 answer
  • Which statement correctly compares the valence electrons for atoms of francium (Fr) and barium (Ba)?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!