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
Solnce55 [7]
3 years ago
8

Help!! Thank You!! Potassium has 19 protons. How many electrons does a neutral potassium atom have?

Physics
2 answers:
fredd [130]3 years ago
8 0
A neutral atom... no matter what the element... has the same number of protons and electrons. In this case, 19 electrons are needed.
Alisiya [41]3 years ago
7 0
19, because the number of protons and electrons are the same!
You might be interested in
. Maria walked 1.5 miles south to her house in 0.5 hours. What is her speed in miles per hour?
Simora [160]

1) 3 miles/Hour

The speed is defined as the distance covered divided by the time taken:

v=\frac{d}{t}

where

d = 1.5 mi is the distance

t = 0.5 h is the time taken

Substituting,

v=\frac{1.5}{0.5}=3 mi/h

2) 1.34 m/s south

Velocity, instead, is a vector, so it has both a magnitude and a direction. We have:

d=1.5 mi \cdot 1609 m/mi = 2414 m is the displacement in meters

t=0.5 h \cdot 3600 s/h =1800 s is the time taken in seconds

Substituting,

v=\frac{2414 m}{1800 s}=1.34 m/s

And the direction of the velocity is the same as the displacement, so it is south.

6 0
3 years ago
Is this statement true or false?
Y_Kistochka [10]
The statement is true! 
4 0
3 years ago
Read 2 more answers
1. What is the difference between longitudinal and transverse waves? Compare and contrast
Anvisha [2.4K]

Answer: image to much to type.

Explanation:

8 0
3 years ago
Need help 8th grade work
Alisiya [41]
1) Ecology

2) Food Web

3) Trophic Level

4) Producer

5) Autotroph

6) Consumer

7) Heterotroph

8) Decomposer

Hope tHis Helps ._.
6 0
3 years ago
Read 2 more answers
imagine that you are on a spaceship that is far from the sun or any planet. Explain why a 500 kg piece of equipment would be dif
Mila [183]

Even though the object is weightless, it would need inertia, I.e, you pushing it or any form of transportation. So you would still have to push that 500kg to just keep it moving in space. Say if it were a planet with less gravitational force, it would be weightless.

8 0
3 years ago
Other questions:
  • Which type of nuclear waste can be disposed of in a landfill?
    5·1 answer
  • You tie a cord to a pail of water, and you swing the pail in a vertical circle of radius 0.600 m. what minimum speed must you gi
    13·1 answer
  • If we begin from star birth, the next key stage in the star-gas-star cycle occurs when a(n)_______ returns gas and new elements
    12·2 answers
  • A skateboarder who travels 60 meters in 30 seconds has a speed of
    11·1 answer
  • The 3.0 kg object below is released from rest at a height of 5.0 m on a curved frictionless ramp. At the foot of the ramp is a s
    14·1 answer
  • Is nickel coin magnetic?
    12·2 answers
  • What happens when electrical energy is used to power stereo speakers? A. Energy is neither lost nor gained as electrical energy
    15·1 answer
  • .Ryan boiled a liter of water and then stirred sugar into it, adding more sugar until no more would dissolve in the water, creat
    14·1 answer
  • Use the image below to answer the following question (ruler not to scale).
    11·2 answers
  • A person with a gravitational force of 750 N is sitting in the centre of a hammock which is strung between two trees. The ropes
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!