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photoshop1234 [79]
3 years ago
6

What is the last step in creating an argumentative essay?

Physics
1 answer:
Vitek1552 [10]3 years ago
3 0

Answer:

The answer is Revising

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Give two examples of contact and non-contact forces and explain why they are contact and non-contact forces respectively.​
Sever21 [200]

The Two examples of contact forces are:

  • frictional force
  • Contact force.

The two examples of non contact forces are:

  • Gravitational force
  • magnetic force.

Contact forces happens due to the contact between two objects

Non Contact forces happens because there is no contact between two objects. There is no attraction.

3 0
2 years ago
A disk of radius 25 cm spinning at a rate of 30 rpm slows to a stop over 3 seconds. What is the angular acceleration? B. How man
Ne4ueva [31]

Answer:  

A. α = - 1.047 rad/s²  

B. θ = 14.1 rad  

C. θ = 2.24 rev  

Explanation:  

A.  

We can use the first equation of motion to find the acceleration:

\omega_f = \omega_i + \alpha t  

where,  

ωf = final angular speed = 0 rad/s  

ωi = initial angular speed = (30 rpm)(2π rad/1 rev)(1 min/60 s) = 3.14 rad/s  

t = time = 3 s  

α = angular acceleration = ?  

Therefore,

0\ rad/s = 3.14\ rad/s + \alpha(3\ s)  

<u>α = - 1.047 rad/s²</u>

B.  

We can use the second equation of motion to find the angular distance:

\theta = \omega_it +\frac{1}{2}\alpha t^2\\\theta = (3.14\ rad/s)(3\ s) + \frac{1}{2}(1.04\ rad/s^2)(3)^2  

<u>θ = 14.1 rad</u>

C.  

θ = (14.1 rad)(1 rev/2π rad)  

<u>θ = 2.24 rev</u>

6 0
3 years ago
Answer this question
ArbitrLikvidat [17]

Answer:

i) 2

ii) No

Explanation:

i) The man will hear two sounds: one through the rail, and one in the air.

ii) The sounds will not reach the man at the same time.  Sound travels faster through solids than through gases, so he will hear the sound through the rail before he hears the sound in the air.

3 0
3 years ago
Complete the following sentences to see if you can apply these ideas.
vesna_86 [32]

Answer:

THE ANSWER IS C

Explanation:

the net force applied to the car is zero

5 0
3 years ago
Sort the phrases according to whether they belong in the category of permanent or temporary magnets
Anit [1.1K]

Permanent magnet:

Hard to demagnetize

Hard

Bar magnet

Temporary magnet:

Easy to demagnetize

Soft

Thumbtack

5 0
3 years ago
Read 2 more answers
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