All categories

3 years ago

Why should people pay attention to scientists when making decisions?

Physics

1 answer:

olga nikolaevna [1]3 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).

You might be interested in

Need help with some physics questions

Agata [3.3K]

The <em>first drawing</em> is correct. (Upper left, F(net) = 50N East)

3 0

3 years ago

UDAY WAS TOLD TO PUT SOME CONTAINERS IN ONE OF THE COLD STORES AT WORK. THE LABLES ON THE CONTAINERS READ STORE BELOW -5 C.THERE

Alja [10]

He should choose the room that’s 15 F.

-5 C = 23 F
Meaning that 15 F is below -5 C and 25 F is not.

3 0

3 years ago

A force of 52N acts upon a 4kg block sitting on the ground. Calculate the acceleration of the object.

irina1246 [14]

Answer:

$a=13\ m/s^2$

Explanation:

Given that,

Force, F = 52 N

Mass of the block, m = 4 kg

We need to find the acceleration of the object. We know that,

F = ma

Put the values,

$a=\dfrac{F}{m}\\\\a=\dfrac{52}{4}\\\\a=13\ m/s^2$

So, the acceleration of the object is equal to $13\ m/s^2$ .

5 0

3 years ago

A solid block is attached to a spring scale. When the block is suspended in air, the scale reads 21.2 N; when it is completely i

blsea [12.9K]

Answer:

7066kg/m³

Explanation:

The forces in these cases (air and water) are: Fa =mg =ρbVg Fw =(ρb −ρw)Vg where ρw = 1000 kg/m3 is density of water and ρb is density of the block and V is its density. We can find it from this two equations:

Fa /Fw = ρb / (ρb −ρw) ρb = ρw (Fa /Fa −Fw) =1000·(1* 21.2 /21.2 − 18.2)

= 7066kg/m³

Explanation:

8 0

3 years ago

Read 2 more answers

A hockey goalie is standing on ice. Another player fires a puck (m = 0.170 kg) at the goalie with a velocity of +41.0 m/s. (a) I

viktelen [127]

Answer:

2991.42 N

Explanation:

For this problem, we'll use the equations: momentum= mass x velocity and impulse = change in momentum, and impulse=force x time.

initial momentum; p1 = 0.17 x 41 = 6.97 kg.m/s

final momentum; p2 = 0, because final velocity is 0 m/s

Thus,

impulse = p1 - p2= 6.97 - 0 = 6.97 kg.m/s

Finally, impulse= Force x time,

Thus, Force = Impulse/time

Force= 6.97/ (2.33 x 10^(-3)) = 2991.42 N

4 0

4 years ago