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VladimirAG [237]
3 years ago
9

What is an atomic nucleus?

Physics
2 answers:
Anton [14]3 years ago
7 0

Answer: The correct option is (C).

Explanation:

An atom is a smallest unit of the matter. Atom consists of electrons, protons, nucleus and neutrons.

Nucleus is the central part of the atom where the whole mass of the atom is supposed to be concentrated.

The electrons revolve around the nucleus. They are negatively charged particle.

The protons are located in the nucleus. They are positively charged particle.

The neutrons are located in the nucleus. They are neutral charged particle.

Therefore, an atom nucleus is the central part of an atom, composed of protons and neutrons.

disa [49]3 years ago
4 0
The correct answer is in fact C , i just took the test. 
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An object of mass 0.50 kg is released from the top of a building of height 8 m. The object experiences a horizontal constant for
liberstina [14]

To solve this problem with the given elements we will apply the linear motion kinematic equations. We will start by calculating the time taken, with the vertical displacement data. Subsequently, with the components of the acceleration, we will obtain the magnitude of the total acceleration, to finally obtain the horizontal displacement with the data already found.

PART A) From vertical movement we know that the acceleration is equivalent to gravity and the displacement is 8m so the time taken to carry out the route would be

h = \frac{1}{2} gt^2

Here,

h = 8 m

g = 9.8 m/s^2

Replacing,

8 = 0.5 * 9.8 * t^2

t = 1.277 sec

PART B) Now, Magnitude of acceleration

a = \sqrt{a_x^2 + a_y^2}

a_x = \frac{1.9}{0.5} = 3.8 m/s^2

a_y = g = 9.8 m/s^2

Thus, magnitude of net acceleration

a = \sqrt{3.82^2  + 9.8^2}= 10.51 m/s^2

PART C) Finally the displacement along horizontal direction is:

s =v_0 t + \frac{1}{2} a t^2

s = 0 + \frac{1}{2} (3.8)(1.277)^2

s = 3.098 m

Therefore the distance traveled along the horizontal direction before it hits the ground is 3.098m

7 0
3 years ago
What energy transformation is performed by a radio ?
ElenaW [278]

why was my answer taken off? There is no way to show evidence for this but ig I can explain. The electrical energy is what is used to power the radio so it works, then the energy is used to catch radio waves which makes sound energy. So the answer is C, electrical energy to sound energy

8 0
3 years ago
Read 2 more answers
Heellppppppppppp!!!!
alukav5142 [94]

Answer:

B, the internet serves to provide people with more insightful explanations on things that they have not experienced yet but want to find out more on.

3 0
3 years ago
9. A body is a particular amount of matter. It can be a solid, liquid or gas. It can be
soldier1979 [14.2K]

Answer:

B. Time and Space

Explanation:

Matter is a pshyical or corporeal susbtance in general, whether solid, liquid, or gaseous especially as distinguised from incorpeal substance, as spirit or mind, or form qualities, actions, and the

Within this time-and-space boundary, all matter exists. All matter is made up of atoms. Because these atoms take up space in the universe, solids, liquids, and gases are recognized as existing and may be found in all three dimensions.

Time is a figurative term. Space has three dimensions but time only has one.

7 0
2 years ago
Read 2 more answers
A 1200 kg car starts from rest and travels 100m in a time of 10 seconds . A) what is the acceleration of the car? B) what force
SVEN [57.7K]
Given:
Mass (m) = 1200 kg
Distance (s) = 100 m
Time (t) = 10 seconds
Now,
velocity (v) =  \frac{distance}{time}

                         = \frac{100~ m}{10~seconds}

                         = 10 m/s
<span><u>Note that this one is the final velocity.</u></span><u />
We also know that, 
initial velocity (u) = 0 m/s .......<span> because the car starts from rest.
</span>Now,
acceleration (a)= \frac{change~in~velocity}{time}

                               = \frac{v-u}{t}

                               = \frac{10-0}{10}

                               = 1 m/s²
Now,
Force (F) = mass (m) * acceleration (a)
                = 1200 kg * 1 m/s²
                = 1200 kg.m/s²
                = 1200 N
Now,
Work Done (W) = Force (F) * displacement (s) ....<span>note that displacement is                                                                                                      same as distance.
</span><span>                          = 1200 N * 100 m
</span>                          = 120000 N.m
                          = 120000 J
Now,
Power (P) = \frac{Work~done(W)}{time(t)}

                 = \frac{120000~J}{10s}

                 = 12000 J/s
                 = 12000 watt
SO,
 A) The acceleration of the car is 1 m/s².
 B) 1200 Newton (N) force must have acted on the car.
 C) The velocity of the car after 10 seconds is 10 m/s.
 D) 120000 Joule (J) work was done on the car.
 E) The engine produced a minimum power of 12000 watt.
5 0
4 years ago
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