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2 years ago

Why should people pay attention to scientists when making decisions?

Physics

1 answer:

olga nikolaevna [1]2 years ago

6 0

Answer:

D. Scientist back up their statements with facts.

Explanation:

The majority of the laws, theorems and thesis are base on with experiments. The follow different strategies for confirm the hypothesis with facts, one of the most famous models is the scientific method. That is a way of proof something in a trustworthy.

In the image is the resume about this method (graphical organizer).

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Which statement describes the interaction between the north and south poles of two magnets?(1 point)

miskamm [114]

Answer:

The south pole of one magnet attracts the north pole of the other magnet.

Explanation:

Opposites attract; likes repel :)

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2 years ago

Nuclear power plants are designed to convert nuclear energy into what type of energy?

vladimir1956 [14]

Hey there!

Nuclear power plants are often designed to CREATE electricity and/or electrical power.

Your answer would be B. Electrical

Hope this helps!

7 0

3 years ago

Read 2 more answers

A support beam needs to be placed at a 28° angle of elevation so that the top meets a vertical beam 1.6 meters above the horizon

k0ka [10]

The distance from the vertical beam that the lower end of the support beam be placed along the horizontal floor is 3.00 m

<h3>Angle of elevation</h3>

The angle of elevation is the angle to which the eye must be raised in order to see an elevated obect at a height.

Now, we know that a right angle triangle is formed; we can obtain the distance from the vertical beam that the lower end of the support beam be placed along the horizontal floor from;

tan 28 = 1.6/x

x = 1.6 /tan 28

x = 3.0 meters

Learn more about angle of elevation:brainly.com/question/21137209

#SPJ4

7 0

2 years ago

A merry-go-round with a a radius of R = 1.63 m and moment of inertia I = 196 kg-m2 is spinning with an initial angular speed of

Ulleksa [173]

Answer:

299.88 kgm²/s

499.758 kgm²/s

Explanation:

R = Radius of merry-go-round = 1.63 m

I = Moment of inertia = 196 kgm²

$\omega_i$ = Initial angular velocity = 1.53 rad/s

m = Mass of person = 73 kg

v = Velocity = 4.2 m/s

Initial angular momentum is given by

$L=I\omega_i\\\Rightarrow L=196\times 1.53\\\Rightarrow L=299.88\ kgm^2/s$

The initial angular momentum of the merry-go-round is 299.88 kgm²/s

Angular momentum is given by

$L=mvR\\\Rightarrow L=73\times 4.2\times 1.63\\\Rightarrow L=499.758\ kgm^2/s$

The angular momentum of the person 2 meters before she jumps on the merry-go-round is 499.758 kgm²/s

5 0

3 years ago

A mass is set oscillating horizontally, with an amplitude of 11.3 cm and a period of 0.702 sec. What is the velocity of the part

Zinaida [17]

Answer:

Explanation:

18.1

6 0

2 years ago