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
skelet666 [1.2K]
3 years ago
7

Okay guys I need serious help here plz!!!

Physics
1 answer:
stich3 [128]3 years ago
3 0
Lithium-Dull

Sodium-Dull

Potassium- Dull

Rubidium- Dull

Cesium- Both

Francium- Shiny

You might be interested in
Suppose a nonconducting sphere, radius r2, has a spherical cavity of radius r1 centered at the sphere's center. Assuming the cha
leva [86]

Answer:

Explanation:

a ) Between r = 0 and r = r₁

Electric field will be zero . It is so because no charge lies in between r = 0 and r = r₁ .

b ) From r = r₁ to r = r₂

At distance r , charge contained in the sphere of radius r

volume charge density x 4/3 π r³

q = Q x r³ / R³

Applying Gauss's law

4πr² E = q / ε₀

4πr² E = Q x r³ / ε₀R³

E= Q x r / (4πε₀R³)

E ∝ r .

c )

Outside of r = r₂

charge contained in the sphere of radius r = Q

Applying Gauss's law

4πr² E = q / ε₀

4πr² E = Q  / ε₀

E = Q  / 4πε₀r²

E ∝ 1 / r² .

6 0
3 years ago
An unknown galaxy has a large flattened core. Which of the following classifications would best fit this galaxy's description? I
Alja [10]

Answer:

Spiral

i know it is so dont say nun people

Explanation:

7 0
3 years ago
Read 2 more answers
Help me with this???
Vikentia [17]

Yo sup??

Average velocity=total distance covered/total time taken

total distance covered=4 + 8=12 miles

total time taken=6 hours

Therefore

average velocity=12/6

=2 miles/hour

Hope this helps

8 0
3 years ago
Psychology is the scientific study of behavior and:
alisha [4.7K]

Answer:

c

Explanation:

its about how the brain reacts

5 0
3 years ago
Read 2 more answers
Which of the following describes an accelerated motion
Naily [24]
Accelerated motion such as a vehicle (car) or a moving item such as a (football thrown in the air)
3 0
3 years ago
Other questions:
  • A body goes from P to Q with a velocity of 10 m/s and comes back from Q to P with a velocity of 20 m/s. What is the average velo
    5·1 answer
  • The outer planets _____.all have rings
    9·2 answers
  • A stone is thrown vertically upward with a speed of 24.0 ms. (a) How fast is it moving when it reaches a height of 13.0 m? (b) H
    13·1 answer
  • A satellite orbiting Earth at an orbital radius r has a velocity v. which represents the velocity if the satellite is moved to a
    6·1 answer
  • The center of the Hubble space telescope is 6940 km from Earth’s center. If the gravitational force between Earth and the telesc
    9·2 answers
  • _________________ is an agency of the national government that regulates the telecommunications industry in the United States in
    7·1 answer
  • What type of heat transfer is happening when the sun warms your face
    11·2 answers
  • Which floor type had the least amount of friction?
    6·2 answers
  • What is cutoff wavelength?
    8·1 answer
  • Cho 3 điện trở, R1=R2=R3=10 ôm. Có nguồn điện 12V
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!