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
Mademuasel [1]
3 years ago
5

The milky way galaxy is most likely an example of which type of galaxy?

Physics
2 answers:
timofeeve [1]3 years ago
7 0
The Milky way galaxy belongs to so called Barred Spiral galaxies.
Art [367]3 years ago
4 0

Hey, how u doin'? Here's your answer.

You might be interested in
What property do protons can electrons have that neutrons do not ?
Vesna [10]

Answer:

Protons and electrons are charged particles. Neutrons have no charge.

4 0
3 years ago
On a tiny scale, what happens to an initially neutral object’s mass when it gains a net positive charge through the exchange of
Advocard [28]

Answer:

On a tiny scale, what happens to an initially neutral object’s mass when it gains a net positive charge through the exchange of electrons? (<em>the mass will decrease by a very small factor</em>)

(b) What happens to the mass of an initially neutral object when it gains a net negative charge through the exchange of electrons?  (<em>The mass will increase by a very small factor</em>)

Explanation:

(a) On a tiny scale, what happens to an initially neutral object’s mass when it gains a net positive charge through the exchange of electrons? (<em>the mass will decrease by a very small factor</em>)

The mass of an atom is given by the sum of the masses of the protons, neutrons and electrons. Electrons has lower mass than protons and neutrons, so they have a minor contribution to the total mass of the atom.    

When an object is electrically neutral it means that it has the same number of protons and electrons. For the case of an object positively charged, the rate of protons is greater than the number of electrons. That means that atom lose electrons so the mass will decrease in a very small factor.

(b) What happens to the mass of an initially neutral object when it gains a net negative charge through the exchange of electrons?  (<em>The mass will increase by a very small factor</em>)

For the case when the object is negatively charged, it means that the atom gains electrons from another object, leading to the conclusion that the mass of the atom will increase in a very small factor.  

Key values:

Electron mass: 9.1095×10⁻³¹ Kg

Proton mass: 1.67261×10⁻²⁷ Kg

Neutron mass: 1.67492×10⁻²⁷ Kg

5 0
3 years ago
The geese fly 23 m/s to the south when they migrate for the winter. Identify if this example is speed or velocity.
kari74 [83]

Answer:

Its velocity.

7 0
2 years ago
What is the medium through which the wave is moving?
irakobra [83]

Rope or one could consider it to be C to B or A to D

5 0
3 years ago
Read 2 more answers
Approximate the human form as an unclothed vertical cylinder of 0.3 m diameter and 1.75 m length with a surface temperature of 3
Zolol [24]

Answer:

q=1118.865W

Explanation:

From the question we are told that

Diameter of the cylinder D=0.3m

Length of the cylinder L=1.75m

Surface temperature of cylinder T_s=30 \textdegree C=303k

Speed of air V=10m/s

Temperature of air T=20 \textdegree C

Generally the equation for Reynolds number is mathematically given by

Re_D=\frac{VD}{v}

where

v=15.27*10^-^6

Re_D=\frac{10*0.3}{15.27*10^-^6}

Re_D=1.96*10^5

Generally the equation for Nusselt number is mathematically given by

N_u=0.6(Re_D)^{0.6}(Pr)^{0.37}

where

Prandtl number

Pr=0.71

N_u=0.6(Re_D)^{0.6}(Pr)^{0.37}

N_u=0.6(1.96*10^5)^{0.6}(0.71)^{0.37}

N_u=791.53

Generally the equation for convective heat transfer is mathematically given by

h=Nu \frac{k}{D}

where

k=25.7*10^{-3}

h=791.53*\frac{25.7*10^{-3}}{0.3}

h=67.81W/m^2K

Generally the equation for surface area of a cylinder is mathematically given by

A=\pi DL

A=\pi *0.3*1.75

A=1.65m^2

Generally the equation for convective heat transfer is mathematically given by

q=h4(T_s-T_{inty)}

q=(67.81)*1.65*(30-20)\\

q=1118.865W

3 0
2 years ago
Other questions:
  • Verify that the SI unit of impulse is the same as the SI unit of momentum.
    13·1 answer
  • Which expression should appear in the blue box to compute percent error? Accepted value – Experimental value Accepted value × Ex
    6·1 answer
  • What material is most commonly used to make a photovoltaic solar cell?
    9·1 answer
  • During the deceleration of an ascending elevator, the normal force on the feet of a passenger is _____ her weight. During the de
    9·1 answer
  • Electromagnetic energy travels inselect one:<br> a. long stringsb. short stringsc. burstsd. waves
    8·2 answers
  • The weight of an astronaut plus his space suit on the Moon is only 250 N. (a) How much does the suited astronaut weigh on Earth?
    10·2 answers
  • The flow of ____ forms the physical basis for electric charge.
    5·1 answer
  • Lasers emit light of a certain frequency in one, precise direction. The light that a laser emits can be tuned to have a high fre
    13·2 answers
  • A 50Kg girl jumps off a 5-meter-high diving board. What is her kinetic energy right before she hits the water?
    8·1 answer
  • Newtons law of garvitation is known as universal law. Why​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!