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velikii [3]
3 years ago
15

Which of the following correctly describes the relationship between speed and velocity?

Physics
1 answer:
Ierofanga [76]3 years ago
5 0
In physic, velocity is a vector quantity. You specify a velocity if you know its magnitude and its direction
On the other hand, speed is a scalar quantity. Speed has magnitude but no direction.

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As she climbs a hill a cyclist slows down from 25 mi/hr to 6mi/hr in 10 seconds what is her acceleration
vesna_86 [32]

|Acceleration| = (change in speed) / (time for the change).

Change in speed = (6 mi/hr - 25 mi/hr) = -19 mi/hr
Time for the change = 10 sec

|Acceleration| = (-19 mi/hr) / (10 sec) = -1.9 mile per hour per second

Admittedly, that's a rather weird unit.
Other units, perhaps more comfortable ones, are:

                 -6,840 mi/hr²

                   -2.79 feet/sec²

8 0
2 years ago
Bonus: We have looked at scenarios under many ideal conditions. In reality when an object falls for long enough it reaches termi
MrMuchimi

Answer:

The answer is A.

Explanation:

4 0
2 years ago
Which chart correctly describes the properties of magnets and electromagnets?
Aliun [14]
The right answer for the question that is being asked and shown above is that: 

B.
Property Electromagnet Magnet
Permanent magnet X
Temporary magnet X X
Magnetic field created by aligning domains X
<span>Moving electric charge produces magnetic field X</span>
6 0
3 years ago
The index of refraction of silicate flint glass for red light is 1.620 and for violet light is 1.660 . A beam of white light in
Alinara [238K]

Answer:

The angular separation between the red and violet components of the spectrum that emerges from the glass is 1.72°

Explanation:

Given:

Refractive index for red light n _{1} = 1.620

Refractive index for violet n' _{1} = 1.660

Refractive index for air n_{2} = 1

Incident angle \theta _{1} = 28.30°

According to the snell's law,

    n_{1} \sin \theta _{1} = n_{2}   \sin \theta _{2}

For red light,

  1.620 \times \sin 28.30 = 1 \sin \theta _{2}

Where \theta _{2} = transmitted angle for red light

   \theta _{2} = 50.18°

For violet light,

  1.660 \times \sin 28.30 = 1 \sin \theta' _{2}

Where \theta' _{2} = transmitted angle for violet light

   \theta' _{2} = 51.9°

Angular separation between red and violet light is given by,

  \theta ' _{2} - \theta _{2} = 51.9 -50.18 = 1.72°

Therefore, the angular separation between the red and violet components of the spectrum that emerges from the glass is 1.72°

6 0
3 years ago
How does centripetal force act on a satellite in orbit?
sp2606 [1]
Hey there!

<span>How does centripetal force act on a satellite in orbit?

Answer:
</span><span>acts as an unbalanced force on the satellite
changes the direction of the satellite
 is a center-directed force

Hope this helps
Have a great day (:
</span>
5 0
2 years ago
Read 2 more answers
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