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
Mekhanik [1.2K]
3 years ago
5

What is the mass number of a potassium atom that has 20 neutrons

Physics
1 answer:
posledela3 years ago
6 0
 <span>The mass of potassium is 39. This is obtained by adding the 19 protons and 20 neutrons found inside the nucleus</span>


You might be interested in
Jada was roller skating at 8 m/s with a total mass of 30 kg. Korbin gently pushed her and she increased her speed to 11 m/s. Fin
yan [13]

Answer:

she added more force, she went down a hill with more friction.

Explanation:

either one of them

5 0
3 years ago
An B flat is played on a french horn, whose frequency is 466Hz.
scoray [572]

Answer:

Period of one vibration = 0.00215 second (Approx.)

Wavelength {Is speed of sound is 343 m/s] = 0.736 m (Approx.)

Explanation:

Given:

Frequency of wave = 466 Hz

Find:

Period of one vibration

Wavelength {Is speed of sound is 343 m/s]

Computation:

Period of one vibration = 1/F

Period of one vibration = 1 / 466

Period of one vibration = 0.00215 second (Approx.)

Wavelength = Velocity / Frequency

Wavelength {Is speed of sound is 343 m/s] = 343 / 466

Wavelength {Is speed of sound is 343 m/s] = 0.736 m (Approx.)

3 0
3 years ago
Read 2 more answers
Hellppppppppppp please thanks
tester [92]

Point C would the greatest

8 0
3 years ago
What is the wave speed of a wave that has a frequency of 250 Hz and a wavelength of 0.35 m?
azamat

Answer:

87.5 m/s

Explanation:

The speed of a wave is given by

v=\lambda f

where

v is the wave speed

\lambda is the wavelength

f is the frequency

In this problem, we have

f=250 Hz is the frequency

\lambda=0.35 m is the wavelength

Substituting into the equation, we find

v=(0.35 m)(250 Hz)=87.5 m/s

6 0
3 years ago
A mass weight of 120N is hung from two strings. what is the tension?
kramer
The weight should be shared between the two string equally. Therefore, tension in each string, T is;

T = 120 N/2 = 60 N
7 0
3 years ago
Read 2 more answers
Other questions:
  • A(n) __________ is a gravitationally curved path that a celestial body travels around a point in space. A(n) __________ is a gra
    9·1 answer
  • What intitial action is the reason behind beginning a scientific investigation
    7·1 answer
  • Suppose you find yourself in your friend's third floor apartment building when you smell smoke coming from outside the door. you
    6·1 answer
  • WILL GIVE BRAINLY
    11·2 answers
  • A police car waits in hiding slightly off the highway. A speeding car is spotted by the police car doing 40 m/s. At the instant
    11·1 answer
  • Can someone please help me!
    5·1 answer
  • The longest cave system in the world is the
    7·2 answers
  • Convert 15 km/hr to m/s<br><br> show work
    7·1 answer
  • Consider two closely spaced and oppositely charged parallel metal plates. The plates are square with sides of length L and carry
    7·1 answer
  • How often should muscle strengthening activities be performed?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!