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
elixir [45]
3 years ago
8

which count of subatomic particles gives an atom its unique identity as an element, and represents its atomic number?

Physics
1 answer:
nadezda [96]3 years ago
3 0
The number of Protons.
You might be interested in
A car of mass 1200 kg is traveling at 2 m/s. Then it collides with a heavy boulder in the road. During the collision, the car mo
olga2289 [7]

Answer:

F = 1.6*10⁴ N

Explanation:

Given distance x = 0.15m, mass m = 1200kg, velocity v = 2m/s.

Unknown: force F

Force is given by Newton's law:

(1) F = ma

The average force to stop an object from a velocity will be the same force necessary to accelerate an object from rest to the same velocity.

The distance for an object starting from rest for a constant acceleration is given by:

(2) x=\frac{1}{2}at^2

The velocity for an object starting from rest for a constant acceleration:

(3) v=at

Using equation 2 and 3 to eliminate time t:

(4) x=\frac{1}{2}a\frac{v^2}{a^2}=\frac{v^2}{2a}

Solving equation 4 for the acceleration a:

(5) a=\frac{v^2}{2x}

Using equation1 to solve for the force F:

(6) F=ma=\frac{mv^2}{2x}

4 0
4 years ago
The more _________ an electron has, the further away it can be from the nucleus. mass
Monica [59]

Answer:

ectron's further from the nucleus are held more weakly by the nucleus, and thus can be removed by spending less energy. Hence we say they have higher energy. The Coulomb interaction energy between a nucleus of atomic number and an ele

4 0
4 years ago
Read 2 more answers
The apartment’s explosion, reportedly caused by a gas leak, produced a violent release of gas and heat. the heat increased the _
uranmaximum [27]
<h2>Apartment Explosion Reported </h2>

The apartment’s explosion, reportedly caused by a gas leak, produced a violent release of gas and heat. The heat increased the temperature of the air in the room, which means an increase in the air's molecular kinetic energy.

When heat is provided then temperature increases and the molecules of substances move rapidly by increase of kinetic energy (K.E) temperature increases. It is understood that heat increases temperature.

6 0
4 years ago
Read 2 more answers
An electromagnet is created using a battery, an insulated copper wire and an iron nail. The wire is wrapped around the nail 30 t
Veseljchak [2.6K]

Answer:

Explanation:

If one assume that each turn is like a strand of electromagnet, which can then be added up. Therefore, increase in the number of turns will yield to increase in the magnetic strength. Also if the current increases, then there will be increase in the magnetic field strength.

From Ohm's law

V = IR

I = V/R

That is a direct increase in voltage will lead to increase in current.

Increase the voltage of the battery and increases the number of turns of the coil. Will suit the situation

4 0
3 years ago
Calculate the heat gained by 100 grams of ice at -20°C in order to become water at 50°C. ( C = .5 for ice and C = 1 for water, Q
Korvikt [17]

Answer:

6008 cal

Explanation:

m_{i} = mass of ice = 100 g = 0.1 kg

c_{i}  = specific heat of ice = 0.5 cal/(kg°C)

c_{w}  = specific heat of water = 1 cal/(kg°C)

L  = Latent heat of fusion of ice = 80 J/g

T_{i}  = initial temperature of ice = - 20 °C

T_{f}  = final temperature of ice = 50 °C

Q = Heat gained

Heat gained is given as

Q = m_{i} c_{i}(0 - (T_{i}))+ m_{i}L + m_{i}c_{w}(T_{i} - 0)

Q = (100) (0.5) (0 - (- 20))+ (0.1)(80) + (100) (1)(50 - 0)

Q = 6008 cal

8 0
4 years ago
Other questions:
  • Need help on these 2 question ??hurry anyone please
    9·1 answer
  • PLEASE HELP ME Color corresponds to the ______________ of light waves. wave speed cycles wavelength
    13·1 answer
  • Use ohms law to determine the battery voltage you would need to send 2.5 A of current through a light bulb with 3.6 Ω of resista
    5·1 answer
  • Which of the following is the best name for NO3?
    9·1 answer
  • Marcus attends a night program at an observatory to learn more about the solar system. He learns that the solar system contains
    14·1 answer
  • A series L-R-C circuit consists of a 226 Ω resistor, a 27.4 mH inductor, a 11.55 µF capacitor, and an AC source of amplitude 15
    9·1 answer
  • 5. If the power of a lens- 2 D, what is its focal length?​
    8·1 answer
  • Jenny is doing her homework when Jenny writes, the pencil exerts a force of 5N on the paper. The area of the pencil in contact w
    8·2 answers
  • A ball with a mass of 5000 g is floating on the surface of a pool of water.
    15·1 answer
  • Who is the father of Modern Physics?​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!