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
joja [24]
3 years ago
5

Why should people pay attention to scientists when making decisions?

Physics
1 answer:
Vesna [10]3 years ago
6 0

Answer:

D

Explanation:

All the other answers are false scientist make frequent mistake in there hypothesis B. is a opinion so is C

And a scientist job is to study and OBSERVE a field of science

You might be interested in
If the mass of a moving object were quartered, it’s inertia would be
AVprozaik [17]

Answer:

Quartered

Explanation:

Because you're a liberal.

8 0
3 years ago
A merry-go-round spins freely when Diego moves quickly to the center along a radius of the merry-go-round. As he does this, it i
lianna [129]

Answer:

<em>A) the moment of inertia of the system decreases and the angular speed increases. </em>

Explanation:

The complete question is

A merry-go-round spins freely when Diego moves quickly to the center along a radius of the  merry-go-round. As he does this, It is true to say that

A) the moment of inertia of the system decreases and the angular speed increases.

B) the moment of inertia of the system decreases and the angular speed decreases.

C) the moment of inertia of the system decreases and the angular speed remains the same.

D) the moment of inertia of the system increases and the angular speed increases.

E) the moment of inertia of the system increases and the angular speed decreases

In angular momentum conservation, the initial angular momentum of the system is conserved, and is equal to the final angular momentum of the system. The equation of this angular momentum conservation is given as

I_{1} w_{1} = I_{2} w_{2}    ....1

where I_{1} and I_{2} are the initial and final moment of inertia respectively.

and w_{1} and w_{2} are the initial and final angular speed respectively.

Also, we know that the moment of inertia of a rotating body is given as

I = mr^{2}    ....2

where m is the mass of the rotating body,

and r is the radius of the rotating body from its center.

We can see from equation 2 that decreasing the radius of rotation of the body will decrease the moment of inertia of the body.

From equation 1, we see that in order for the angular momentum to be conserved, the decrease from I_{1} to I_{2} will cause the angular speed of the system to increase from w_{1} to w_{2} .

From this we can clearly see that reducing the radius of rotation will decrease the moment of inertia, and increase the angular speed.

7 0
3 years ago
A pure substance has a/an
Evgesh-ka [11]

Answer:

Element or a compound.

Explanation:

6 0
3 years ago
What is the best way to avoid overloading your boat
8_murik_8 [283]
Travel lightly and read your instructions manual.
6 0
3 years ago
Can you please answer my question correctly ASAP​
lana66690 [7]

Answer:

1) C, 2) C, 3) B, 4) D, 5) A/B, 6) D, 7) D, 8) A, 9) B, 10) A

Explanation:

1) Seconds, minutes and days are time units. (Correct answer: C)

2) The displacement is shortest distance between the point of origin and the point of destination. (Correct answer: C)

3) The velocity is the rate of change of position in time. (Correct answer: B)

4) Graphs are a very useful ressource to infer characteristics inherent to a studied physical variable. (Correct answer: D)

5) There are two possible answers, since both milimeters and meters are units for distance. (Correct answers: A/B)

6) The distance is the arc length of the entire path that object travelled. (Answer: D)

7) Traditionally, in a position vs. time graph we plot time in the x-axis. (Answer: D)

8) In this case, we use a distance-time graph, where travelled distance is the dependent variable and time is the independent variable. (Answer: A)

9) The point of origin is the initial position of the object. (Answer: B)

10) The point of destination is the final position of the object. (Answer: A)

5 0
3 years ago
Other questions:
  • Why must mine tailings be stored and disposed of carefully
    12·2 answers
  • What physical processes helped to form the caribbean and still poses a threat today?
    8·1 answer
  • If it takes you 10 seconds to increase from 0 km/h to 50 km/h, what is your acceleration?
    8·2 answers
  • Four engineers propose designs for door locks that are triggered by a sample of
    13·1 answer
  • a resultant force of 4n acts on an object of mass 0.50kg for 3 seconds. what is the change in velocity caused by this force​
    12·1 answer
  • How can a soccer ball and a small tennis ball bouncing relates to newtons first law interita?
    14·1 answer
  • What is one way to increase the amplitude of a wave in a medium?
    12·2 answers
  • A cubical wooden box floating on water rises 1cm when 400 gm of stone is
    9·1 answer
  • What is this? Plz I need help...
    5·1 answer
  • Which of these statements explains why we have day and night? [1] The Earth orbits the Sun once a day The Sun orbits the Earth o
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!