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
Alexandra [31]
2 years ago
5

Potassium has an atomic number

Physics
2 answers:
Fantom [35]2 years ago
8 0

Answer:

20 neutron

Explanation:

neutron=atomic mass-atomic no.

=39-19

=20

Lera25 [3.4K]2 years ago
5 0
Answer: C) 20

Detailed Explanation:

No. of Neutrons = Mass No. - Atomic No.

Therefore,
= 39 - 19
=> 20

No. Of Neutrons = 20
You might be interested in
Which is harder, air tight or water tight seals?
Vladimir [108]
Should be an air tight seal
4 0
3 years ago
Which of the five themes of geography would a person most likely use to study the importation of Chinese goods into the United S
Morgarella [4.7K]
B. Movement would be the correct answer.
7 0
2 years ago
A 0.0663 kg ingot of metal is heated to 241◦C
Westkost [7]

Answer:280.216j/kg°C

Explanation:

Mass of metal=0.0663kg

mass of water=0.395kg

Final temperature=27.4°C

Temperature of metal=241°C

Temperature of water=25°C

specific heat capacity of water=4186j/kg°C

0.0663xax(241-27.4)=0.395x4186x(27.4-25)

0.0663xax213.6=0.395x4186x2.4

14.16168a=3968.328

a=3968.328 ➗ 14.16168

a=280.216j/kg°C

4 0
3 years ago
Words a child uses are called the spoken or ___ vocabulary
Vaselesa [24]

The answer is: Expressive vocabulary

Expressive vocabulary refers to the combination of all the words that a person has acquire throughout his/her life and can be used in various type of situations.

This would include all words in the child vocabulary, starting from the child's   written language, spoken language or even the child's manually signed words.

4 0
3 years ago
A 210 kg meteoroid is heading toward the earth accelerates by 2.4 × 105 m/s2.
lidiya [134]
According to Newton's second law of motion, Force is the product of mass and acceleration of the object.
So, F = m * a

Here, m = 210 Kg
a = 2.4 * 10⁵ m/s²

Substitute their values, 
F = 210 * 2.4 * 10⁵ N
F = 504 * 10⁵ N
F = 5.04 * 10⁷ N

In short, Your Answer would be Option B

Hope this helps!
6 0
3 years ago
Other questions:
  • Which changes in an electric motor will make the motor stronger? Check all that apply.
    9·1 answer
  • Is it possible to be moving but not be in motion?
    13·2 answers
  • Global climatic patterns are changing because of the melting of polar ice caps. The melting of polar ice caps is an example of t
    15·2 answers
  • A material that provides little or no resistance to the flow of electric current is called a(an) A. circuit / B. conductor / C.
    5·2 answers
  • A crate with mass 32.5 kg initially at rest on a warehouse floor is acted on by a net horizontal force of 14.0 N.
    5·1 answer
  • What is the input of a person pulling a rope 20 meters with a force of 200 N
    12·1 answer
  • A wave has a period of 4 seconds. What is its frequency?
    15·1 answer
  • Part A What is the resistance of a 4.4 m length of copper wire 1.3 mm n diameter? The resistivity of copper is 1.68x 10-8 Ω-m Ex
    15·1 answer
  • The social decision scheme in which all members of a group must agree on a choice is known as __________.
    11·2 answers
  • Which is not a unit of volume
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!