3 years ago

Which statement accurately describes the charge of the nucleus of an atom?

Physics

1 answer:

Aleksandr [31]3 years ago

3 0

Answer:

A. The nucleus can be either positively charged or neutral.

Explanation:

The nucleus of an atom contains protons and neutrons only. Whereas electrons revolve around the nucleus. Protons are positively charged, neutrons have no charge and electrons are negatively charged.

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You are a scientist and would like to know if anew fertilizer will help plants grow faster. What would the experimental group be

Gennadij [26K]

Answer:

The plants that get different amounts of the new fertilizer.

if my answer helps you than mark me as brainliest.

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3 years ago

Which of these period three elements from the periodic table would you predict to be the MOST metallic and why? A) Al B) Si C) P

Sauron [17]

Sorry I don’t even know

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3 years ago

Un bloque de 2.5kg de masa es empujado 2.2m a lo largo de una mesa horizontal sin fricción por una fuerza constante de 16.0 N di

Tanzania [10]

Answer:

Explanation:

(a) The applied force has two components Fx and Fy. The Fx component is the only one that does work

$W_{x}=F_{x}x=(16N)cos(25)(2.2m)=31.9J$

(b) There in no net force in the vertical component

$F_{N}-F_{y}-F_{g}=0\\F_{N}=F_{y}+F_{g}=(16N)sin(25)+(2.5kg)(9.8\frac{m}{s^{2}})=31.26N$

(c)

$F_{g}=Mg=(2.5kg)(9.8\frac{m}{s^{2}})=24.5N$

(d)

$F_{T}=F_{x}=(16N)cos(25)=14.5N$

I attached an scheme of the force diagram

8 0

3 years ago

the radius of the tires on a particular vehicle 0.62m if the tires are rotating 5 times per second, what is the velocity of the

tankabanditka [31]

Circumference of the tire = (2 pi) x (radius)

   = (2 pi) x (0.62 meter)

   = 3.9 meters

If the tire never slips or skids, then the speed of the vehicle is

   speed = (distance) / (time to cover the distance)

   = (5 x 3.9 meters) / 1 second

   = 19.48 meters/second .

(about 43.6 miles per hour) .

We can't say anything about the vehicle's velocity, because we have
no information about the direction in which it's heading.

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3 years ago

Light rays bend as they pass from air into water at an angle (not 90 degrees). this is refraction. air water normal incident ray

xxTIMURxx [149]

When light ray pass from air into water, its speed and wavelength change only the frequency of the light doesn't change.

Light travels slower in a medium of higher refractive index. It bends because of this change in speed. The wavelength of light also changes in order to maintain the constant frequency.

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3 years ago