Answer:
Protons; electrons.
Explanation:
An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such defines the structure of a chemical element.
Generally, these atoms are typically made up of three distinct particles and these are protons, neutrons and electrons. All the physical properties of a mineral result from the mineral's internal arrangement of atoms.
The atomic number is always equal to the total number of protons, which is also equal to the total number of electrons. Protons are the positively charged particles that make up an atom while electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.
A chemical element is denoted by [tex] X_{Z}^{A} [/tex]
Where;
X is the symbol of the element.
A is the atomic mass or number of nucleons.
Z is the atomic number or number of protons.
Therefore, the number of neutrons = A - Z
How much work is required to raise a 0.75 kg flag from shoulder height (1.2m) To the top of the flag pole (4 m)?
Answer:
20.58J
Explanation:
[tex]W=\Delta E[/tex]
[tex]\Delta E= \Delta U_{g}[/tex]
[tex]\Delta U_{g}=mgh[/tex]
[tex]mgh=(.75kg)(9.8m/s^2)(2.8m)=20.58J[/tex]
The brakes of a 2000 kg car apply a force of 250 N to slow down a car as it comes off of an exit ramp. What is the acceleration of the car?
The cerebellum is part of the
____?
Explanation:
i think it the central nervous system
aight here's the question:
Homeboy Joe is running at 6.65 m/s while Homegirl Jill is running at -1.10 m/s. Home boy Joe and Homegirl Jill hit each other. Homeboy Joe not wanting to be a stage 5 clinger. he makes sure he doesn't hold onto Homegirl Jill after they collide. If Homeboy Joe's mass is 99.5 kg and Homegirl Jill's mass is 68.8 kg. what is Homegir Jill's velocity after they hit if Homeboy Joe's velocity is 2.35?
***Round to the nearest hundredth***
Correct Answer: 5.12
I can't do PEMDAS to save my life can someone show me the correct way to solve with work?
Answer:
[tex]5.12\:\text{m/s}[/tex]
Explanation:
From the conservation of momentum, the total momentum of the system before and after the collision must be the same. Therefore, let the momentum of Homeboy Joe be [tex]p_b[/tex] and let the mass of Homegirl Jill be [tex]p_j[/tex]. We can write the following equation:
[tex]p_{bi}+p_{ji}=p_{bf}+p_{jf}[/tex], where subscripts [tex]i[/tex] and [tex]f[/tex] represent initial and final momentum respectively.
The momentum of an object is given by [tex]p=mv[/tex].
Therefore, we have:
[tex]m_{b}v_{bi}+m_{j}v_{ji}=m_{b}v_{bf}+m_{b}v_{jf}[/tex] (some messy subscripts but refer to the values being plugged in you're confused what corresponds with what).
Plugging in values, we have:
[tex]99.5\cdot 6.65 + 68.8\cdot (-1.10)=99.5\cdot 2.35+ 68.8\cdot v_{jf}[/tex].
Solving, we get:
[tex]v_{jf}=\frac{99.5\cdot 6.65+68.8\cdot (-1.10)-99.5\cdot2.35}{68.8},\\v_{jf}=5.11875,\\v_{jf}\approx \boxed{5.12\:\text{m/s}}[/tex].
It's important to note that velocity is vector quantity, so the negative velocity assigned to Jill simply implies she is moving at [tex]1.10\:\text{m/s}[/tex] in the opposite of Joe's direction. After the collision, she is now moving [tex]5.12\:\text{m/s}[/tex] in the same direction that Joe was initially moving, due to Joe's relatively large mass and initial velocity.
Help!Yall get brainliest
Answer:
Explanation:
Good sources include barley, oatmeal, beans, nuts, and fruits such as apples, berries, citrus fruits, and pears. Many foods contain both soluble and insoluble fiber. In general, the more natural and unprocessed the food, the higher it is in fiber. There is no fiber in meat, dairy, or sugar.
Which is the correct definition for sea floor spreading
Are acceleration and force proportional or inversely proportional values?
Answer:
Yes, acceleration and force are directly proportional to each other.
Explanation:
The force acting on an object is given by :
F = ma
Where
m is mass
a is acceleration
It can be clear from the above formula that the acceleration and the force are directly proportional to each other.
PLS ANSWER FAST WILL GIVE BRAINLY!!!
When you bounce a ball eventually it will stop bouncing. Where does the energy go?
Answer:
Into sound and heat energy due to friction.
What happens to particles of a substance as its temperature increases? A the average kinetic energy increases B the average kinetic energy decreases C the average kinetic energy stays the same D nothing happens
Which can make 4 covalent bonds? Carbon, Silicon, or both?
Answer:
I would say both
Explanation:
Each silicon atom has four valence electrons which are shared, forming covalent bonds with the four surrounding Si atoms.
Carbon contains four electrons in its outer shell. Therefore, it can form four covalent bonds with other atoms or molecules. The simplest organic carbon molecule is methane (CH4), in which four hydrogen atoms bind to a carbon atom (Figure 1).
please help!
A proton moves perpendicularly to a magnetic field that has a magnitude of 4.20 x 10-2 T. What is the speed of the particle if the magnitude of the magnetic force on it is 2.40 x 10-14 N?
Answer:
V=3.57 × 10^6 m/s
hope it is helpful..
The speed of the proton in the magnetic field is 3.57×10⁶ m/s.
To determine the speed of the proton, we need to know about the magnetic force experienced by a charged particle in a magnetic field.
What is the magnetic force on a charge particle in a magnetic field?From lorentz law, the magnetic force on a charge particle is given asF=q×v×B
where, q= charge of the particle
v= speed of the particle
B= magnetic field
What will be the speed of the charge particle, proton, if the magnetic field and force are given?Magnetic force(F)= q×v×Bv=F/(q×B)
Here, B= 4.20×10⁻²TF=2.40×10⁻¹⁴N
q= 1.6×10⁻¹⁹C
Then, v= 2.40×10⁻¹⁴/ ( 4.20×10⁻²× 1.6×10⁻¹⁹)
= 3.57×10⁶ m/s.
Thus, we can conclude that the speed of the proton in the magnetic field is 3.57×10⁶ m/s.
Learn more about the magnetic force here:
https://brainly.com/question/25932320
#SPJ2
that is a difference between a law and a hypothesis?
A law describes how two variables affect each other, but a hypothesis only discusses one variable.
A law must be testable so that it can be proven, but a hypothesis is an untestable explanation.
A hypothesis includes an explanation for why two variables affect each other, but a law only describes how they
affect each other
A hypothesis may or may not be testable, but a law is an untestable explanation of why two variables affect each
other and cannot be proven
Answer:
A hypothesis is a limited explanation of a phenomenon; a scientific theory is an in-depth explanation of the observed phenomenon.
A law is a statement about an observed phenomenon or a unifying concept, according to Kennesaw State University. ... However, Newton's law doesn't explain what gravity is, or how it works.
Question 4 (1 point)
How far does a sound wave travel in 3 seconds if the air temperature is 30 degrees
Celsius?
a) 114.33 m
b) 1047 m
c) 1029 m
d) 116.33 m
Answer:
B
Explanation:
v=349m/s
d=vt
d=349*3
d=1047m
WHY 349??
Because, velocity of sound increases about 0.6 m/s for every 1 degree celsius rise in temp.
Velocity of sound is about 343 m/s at 20 degrees C, so 0.6*10=6 more m/s, or 349 m/s. Kinda cool how temperature alters the speed of sound!
Do all force interactions cause a noticeable change in motion? Explain your thinking?
!THANK YOU!
Answer:
No. If you apply a force in a chair, for example, you only will be able to move the chair if you beat the static frictional force. So, with that example, we can see that is not any type of force that can produce movement. The only force that produces movement is a result force which is non-zero.
Consider an alien on a planet with an acceleration of gravity equal to 20 m/sec^2. If the alien's mass is 10 kg, how much does the alien weigh?
Answer:
the weight of alien is 200 newtons
Explanation:
The computation of the alien weight is shown below:
Given that
Acceleration = 20m/sec^2
And, the mass is 10 kg
So, the weight of alien is
= 20 × 10
= 200 newtons
hence, the weight of alien is 200 newtons
Identify the order of The Sun, Moon, and Earth During a solar and lunar eclipse.
Answer:As the Earth rotates on its axis and revolves around the Sun, day and night and seasons result. When the new moon comes between the Earth and the Sun along the ecliptic, a solar eclipse is produced. When the Earth comes between the full moon and the Sun along the ecliptic, a lunar eclipse occurs.
Explanation:
Features of Elements
Use the periodic table on the next page to complete the following
table. The number in the name indicates the isotope and therefore
the nuclide number
Element and Chemicol Atomic Mass
Number Number
of
of
Hudito
isotope
number
Symbol.
number
notation
profons neutrons
2 4 나
Helium-4
He
Beryllium-9
Nitrogen-14
N
Oxygen 10
0
Phosphorus 32
P
Chlorine-35
Potassium 39
Tungston-150
w
Lead 90
PU
hii pls help i’ll give brainliest if you give a correct answer
Answer: the first option: "the period of revolution of the Moon around Earth"
Answer:
The answer your looking for would be D.
Explanation: The other answers don't make any sense you can cancel them out D is the the answer the period of rotation of the moon around its axis.
In paragraph 3 and paragraph 24, what is meant by the phrase “designer babies”? A. Babies that are bred to be particularly attractive
B. Babies whose DNA has been altered to enhance a specific trait
C. Babies whose DNA has been altered to avoid disease
D. The biological children of genetic researchers
Two dogs are pulling on a chew toy. One dog pulls the chew toy with 64 N (E) and
the other pulls the chew toy with 31 N [W]. Determine the NET FORCE acting on
the chew toy.
Answer:
33 N
Explanation:
Given that,
One dog pulls the chew toy with 64 N (E) and the other pulls the chew toy with 31 N [W].
We need to find the net force acting on the chew toy. Let East be taken positive and west be taken negative. So,
[tex]F_{net}=+64+(-31)\\\\=33\ N[/tex]
So, the net force acting on the chew toy is equal to 33 N.
I got stuck on this question
Answer it 2n
Explanation:
Question 4 (1 point)
A golf ball is suspended by a cord held in a golfers hand. The reaction to the force of
gravity on the golf ball is the force exerted by
Answer:
The force of the golf ball on Earth!
Explanation:
Action/Reaction Pairs work like this:
Earth on Golfball, Golfball on Earth.
someone help please !!
Answer:
c.
is the answer please brainliest
How do the temperature curves in your graph show the range of temperature?
Answer:
Step-by-step Explanation:
As a cold air mass advances on a warm air mass, what usually comes before it?
Answer: A cold front occurs when a cold air mass advances into a region occupied by a warm air mass. If the boundary between the cold and warm air masses doesn't move, it is called a stationary front.
Explanation: Two types of occluded front exist: the warm-type and the cold-type. They’re distinguished by the relative temperatures of the air mass ahead of the occlusion – in other words, the air mass ahead of the original warm front – and the air mass behind the cold front. If the air behind the cold front is colder than the air ahead of the occlusion, it shoves beneath that air (because it’s denser) to form a cold-type occluded front. If the air behind the cold front is warmer than the air ahead, it rides over it to form a warm-type occluded front – which appears to be the more common case. In either situation, the lighter warm air representing the air mass originally between the warm and cold fronts sits above the boundary between the two cooler air masses.
Hope this helps!!
Which location, 23 degrees or 48 degrees would experience the same earthquake at stronger intensity?Explain why.
Answer:
48 degress
Explanation:
An earthquake causes many different intensities of shaking in the area of the epicenter where it occurs. So the intensity of an earthquake will vary depending on where you are. Sometimes earthquakes are referred to by the maximum intensity they produce. In the United States, we use the Modified Mercalli Scale. Earthquake intensity is a ranking based on the observed effects of an earthquake in each particular place. Therefore, each earthquake produces a range of intensity values, ranging from highest in the epicenter area to zero at a distance from the epicenter.
A woman hikes 2.5 kilometers in 30 minutes, and then 3 kilometers in 20 minutes, and finally 2 kilometers in 10 minutes. What was her average speed?
Answer:
7.5 kph
Explanation:
2.5+3+2=7.5
How much potential energy does a 4 kg object have that is 5 meters off the ground?
math pls help
A hair dryer is rated at 1.2kW. When it is plugged into a standard outlet and turned on, what is the current in the hair dryer?
Answer:
1200 watts at a standard 120v draws 10 amps
A box has a mass of 6.0 kg. What is its weight on the mars, where the acceleration due to
gravity is 0.38 times that on Earth? *
Answer:
The weight of the box is 22.38 N.
Explanation:
The weight (W) of the mass is given by:
[tex] W = mg [/tex]
Where:
m: is the mass of the box = 6.0 kg
[tex]g_{m}[/tex]: is the acceleration due to gravity of mars
Since the acceleration due to the gravity of mars is 0.38 times that on Earth we have:
[tex]g_{m} = 0.38g_{E} = 0.38*9.81 m/s^{2} = 3.73 m/s^{2} [/tex]
Hence, the weight of the mass is:
[tex] W = mg = 6.0 kg*3.73 m/s^{2} = 22.38 N [/tex]
Therefore, the weight of the box is 22.38 N.
I hope it helps you!