Answer:
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The value of the friction that would describe the system would be the same as the pushing force Polly gives to the box which is 30 N. This is because the forces should be balanced out in the x-direction and in the y-direction since the box was not moved.
In SBc galaxies, both the arms and the bar are highly resolved into star clouds and stellar associations. The arms are open in form and can start either at the ends of the bar or tangent to a ring.
<h3>Is the Milky Way a SBc galaxy?</h3>
Originally thought to be a hubble type Sb or Sc (Sbc), astronomers now believe that the Milky Way is has a central bar and is therefore a loosely wound, barred spiral galaxy – Hubble type SBbc.
<h3>What is the difference between an SBc galaxy and an Sc galaxy?</h3>
Sa (and SBa) galaxy types have tightly wound arms and large central bulges.
Sc's (and SBc's) have loosely wound arms and a small central bulge.
Learn more about SBc galaxy here:
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brainly.com/question/2515850</h3><h3 /><h3>#SPJ4</h3>
Properties of electromagnetic radiation and photons. ... we find the types of energy that are lower in frequency ( and thus longer in wavelength) than visible light. Seeee
Initial velocity, u = 21 m/s
Acceleration, a = 3.0 m/s²
Distance traveled, s = 535 m
Let v = the final velocity.
Use the formula
v² = u² + 2as
v² = (21 m/s)² + 2(3.0 m/s²)(535 m) = 3651 m²/s²
v = 60.42 m/s
Answer: 60.42 m/s
