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Ulleksa [173]
3 years ago
12

Which one of the statements below is true about mechanical waves?

Physics
1 answer:
TEA [102]3 years ago
5 0
They require a medium to travel through
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Put the phase of mitosis or mitosis in order from first to last
vladimir1956 [14]
The phases of mitosis in order from first to last are: Interphase, prophase, metaphase, anaphase, and telophase & cytokinesis.
7 0
3 years ago
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A dentist’s drill starts from rest. After 3.20 s of constant angu-lar acceleration, it turns at a rate of 2.51 3 104 re v/m i n.
Gekata [30.6K]

Answer:

ΔTita = 4205.6 rad

Explanation:

w_{i} means initial angular velocity, which is 0 rev/min

w_{f} means final angular velocity, which is 2.513*10^{4}rev/min

t means time t= 3.20 s

one revolution is equivalent to 2πrad so the final angular velocity is:

w_{f} = (2π/60) *2.513*10^{4} rad/s

w_{f}= 2628.5 rad/s

so the angular acceleration, α will be:

α = 2628.5 rad/s / 3.20 s

a = 821.40 rad/s^{2}

so the rotational motion about a fixed axis is:

w^{2} _{f} =w^{2} _{i} + 2αΔTita    where ΔTita is the angle in radians

so now find the ΔTita the subject of the formula

ΔTita = \frac{w^{2} _{f}-w^{2} _{i}  }{2a}

ΔTita = ((2628.5)^{2} - (0 rev/min)^{2}) / 2* 821.40

ΔTita = 4205.6 rad

7 0
4 years ago
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A device that uses electromagnetic induction to transfer electrical energy from one circuit to another is a(n)_____.
Nutka1998 [239]

A device that uses electromagnetic induction to transfer electrical energy from one circuit to another is a transformer.

<h3>Which device uses electromagnetic induction to transfer electrical energy from one circuit to another?</h3>

  • A transformer is an electrical device that transfers energy from one electric circuit to another using the electromagnetic induction principle.
  • It is intended to change the AC voltage between the circuits while keeping the current's frequency constant.
  • A transformer work on the principle of electromagnetic induction in which flux is linked from primary to secondary.
  • Transformers accomplish this without establishing a conductive link between the two circuits. This is made feasible by using Faraday's Law of Induction, which explains how an electric circuit will interact with a magnetic field to produce an electromotive force (EMF).

To learn more about transformers refer:

brainly.com/question/25886292

#SPJ4

3 0
2 years ago
Joanna drove a car at 30km/hr. What is the speed in m/s?
Aloiza [94]
8.33 m/s
Explain:

If you understand what 1 km = 1000 m and 1 hr = 60*60 seconds signify, you already know what they mean. If you translate 1000 m/ 3600 s to km/hr, you'll get 5 m/ 18 s, which you can multiply by 30 to get (30 x 5)/18 = 8.33 m/s.
7 0
3 years ago
After a ball is thrown upward and is in the air, what will its acceleration do?
kifflom [539]
Acceleration will always be samei.e.

Acceleration=g= 9.81 m/s^2
8 0
4 years ago
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