Answer:
The behavior of an object that has been charged is dependent upon whether the object is made of a conductive or a nonconductive material. Conductors are materials that permit electrons to flow freely from particle to particle. An object made of a conducting material will permit charge to be transferred across the entire surface of the object. If charge is transferred to the object at a given location, that charge is quickly distributed across the entire surface of the object. The distribution of charge is the result of electron movement. Since conductors allow for electrons to be transported from particle to particle, a charged object will always distribute its charge until the overall repulsive forces between excess electrons is minimized. If a charged conductor is touched to another object, the conductor can even transfer its charge to that object. The transfer of charge between objects occurs more readily if the second object is made of a conducting material. Conductors allow for charge transfer through the free movement of electrons.
In contrast to conductors, insulators are materials that impede the free flow of electrons from atom to atom and molecule to molecule. If charge is transferred to an insulator at a given location, the excess charge will remain at the initial location of charging. The particles of the insulator do not permit the free flow of electrons; subsequently charge is seldom distributed evenly across the surface of an insulator.
While insulators are not useful for transferring charge, they do serve a critical role in electrostatic experiments and demonstrations. Conductive objects are often mounted upon insulating objects. This arrangement of a conductor on top of an insulator prevents charge from being transferred from the conductive object to its surroundings. This arrangement also allows for a student (or teacher) to manipulate a conducting object without touching it. The insulator serves as a handle for moving the conductor around on top of a lab table. If charging experiments are performed with aluminum pop cans, then the cans should be mounted on top of Styrofoam cups. The cups serve as insulators, preventing the pop cans from discharging their charge. The cups also serve as handles when it becomes necessary to move the cans around on the table.
Electrical conductors are made up of metals such as, copper, aluminum, etc. These metals are used to make wires. Most wires are made out of copper because it conducts electricity with high flexibility and very little resistance.
What is conductor ?
"A conductor, or electrical conductor, is a substance or material that allows electricity to flow through it. In a conductor, electrical charge carriers, usually electrons or ions, move easily from atom to atom when voltage is applied."
What is electricity ?
"Electricity is both a basic part of nature and one of the most widely used forms of energy. The electricity that we use is a secondary energy source because it is produced by converting primary sources of energy such as coal, natural gas, nuclear energy, solar energy, and wind energy, into electrical power."
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A group of friends push a van, using a total force of 220 N. The van moves a distance of 0.2 m. How much work have they done?
Answer:
44
Explanation:
Work = Force X Distance
Determine the acceleration of a boat
with a speed of 18 m/s for 20 seconds.
Answer:
Explanation:
initial velocity, u = 0
final velocity, v = 18 m/s
time = 20 sec
acceleration, a = v - u / t
= 18 - 0 / 20
= 18 / 20
= 9 / 10
= 0.9 m/s^2
Hope this helps
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Help I'm confused basic atom stuff
2. 11
The answer is 11 since there is always the same amount of protons as electrons.
3. 12
4. 13
5. 15
The answer is 15 since the number of protons has to be equal to the amount of electrons.
A 60 kg person walks up a 75 m tall hill. How much gravitational
potential energy do they have at the top of the hill?
Answer:
45,000 JExplanation:
The gravitational potential energy of a body can be found by using the formula
GPE = mgh
where
m is the mass
h is the height
g is the acceleration due to gravity which is 10 m/s²
From the question we have
GPE = 60 × 10 × 75
We have the final answer as
45,000 JHope this helps you
When ionic bonds form compound structures in a solid state, they arrange in latticed, crystalline patterns.
What does this say about the structure of the compound on the molecular level? What does it say about
the properties of that compound?
Answer:
Structures are determined by two principal factors: the relative sizes of the ions and the ratio of the numbers of positive and negative ions in the compound.
Ionic compounds at a molecular level are arranged in definite patterns to give a crystalline structure leading to a high melting point, high boiling point and high density in ionic compounds.
In ionic bond is formed when a metal transfers electrons to a nonmetal and an ion pair is formed. The ions are held together by strong electrostatic interaction as described by Coulomb's law.
However, the smallest unit of an ionic substance is called the formula unit. The compound arranges itself in definite patterns to form a crystalline lattice. Hence, the structure of ionic compound is highly ordered. This leads to a high melting point, high boiling point and high density in ionic compounds.
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A substance burns in the presence of oxygen.
Which answer choice names a chemical property in this scenarlo?
O density
O boiling point
solid formation
O flammability
Answer:
D. flammability
Explanation:
I took the test and got it right
How many forces are used in a catapult ( please help me asap I have a presentation due tomorrow and. I need help starting
Answer:
Hey buddy, here is your answer.Hope it helps you.
Explanation:
A catapult is a launching device that allows us to experimentally observe projectile motion. Once the ball is launched, the only forces acting are gravity and air resistance.
What time is it in Orlando, FL when it is 10:00 a.m. in Los Angeles, CA?
7:00 a.m.
1:00 p.m.
2:00 p.m.
10:00 a.m.
Answer:
1:00 pm
Explanation:
CA is pacific time zone
FL is Eastern
pacific time is 3 hours less
Answer:
1:00 p.m.
Explanation:
Los Angeles, CA is in the Pacific Standard Time zone which is 3 hours behind the Eastern Standard Time zone, the time zone that Orlando, FL is in.
How did later chemists change Mendeleev’s periodic table?
A. They included physical properties such as melting point and density.
B. They used atomic number instead of atomic mass to organize the elements.
C. They used atomic mass instead of atomic number to organize the elements.
D. They included chemical properties such as bonding power.
TRUE OR FALSE!!!!!
PLEASE HELP
Igneous rock is formed by volcanoes releasing magma from the mantle, the rock cools and piles up forming a mountain. Rivers direct water to cool magma underground forming metamorphic rock under lake beds.
Answer:
true
Explanation:
this is true, igneous rocks are formed from molten lava when it cools
Answer: True
Explanation:
A crate is pulled by a force (parallel to the incline) up a rough incline. The crate has an initial spped shown in the figure below. The crate is pulled a distance of 8.24m on the incline by a force of 150N force. b) What is the speed of the crate after it is pulled the 8.24M? Answer in units of m/s.
Answer:
(a) Kinetic energy of the cart is 648.32 J.
(b) Speed of the cart is 11.44 m/s.
Explanation:
From the attached below figure we came to know that,
Mass of the crate is 10 kg (m)
Initial speed of the crate is 1.2 m/s (v)
Coefficient of friction on a rough plane is 0.286 (µ)
Force on the cart is 150 N (F)
The distance which crate is moved (d) is 8.05 m.
Calculation of kinetic energy:
Acceleration of the cart:
We know that,
F = F – m × g × sinθ - µ × m × g × cosθ (F = ma)
m × a = F – m × g × sinθ - µ × m × g × cosθ
10 × a = 150 – (10 × 9.8 × sin 27) – (0.286 × 10 × 9.8 × cos 27)
10 × a = 150 – 44.49 – 24.97
10 × a = 80.54
Calculation of speed:
Change in kinetic energy = m × a × d
Change in kinetic energy = 10 × 8.054 × 8.05
Change in kinetic energy = 648.32 J
Explanation:
Which tool can be used to measure the mass of a package being mailed
Answer:
A SCALE
Explanation:
Carl went on a Euro Trip and was traveling from Spain to Russia. When he looked on the map it said Russia was 7035 km away from Spain. If it took Carl 7 hours to get there, what would his average speed be in meters per second?
Answer:
The average speed would be 279.167 meters per second.
Explanation:
Speed is the magnitude that expresses the variation in position of an object and as a function of time. In other words, speed is defined as the relationship established between the distance traveled and the time elapsed in the movement of a mobile.
Speed can be calculated using the following expression:
[tex]Speed=\frac{distance}{time}[/tex]
In this case:
distance= 7,035 kmtime= 7 hoursSince the required unit of speed is meter per second, then you convert from km to meters for the case of distance, and from hours to seconds for the case of time. So:
distance= 7,035 km= 7,035,000 m (being 1 km= 1,000 m)time= 7 hours= 420 minutes= 25,200 seconds (being 1 hour=60 minutes and 1 minute=60 seconds)Replacing in the definition of speed:
[tex]Speed=\frac{7,035,000 meters}{25,200 seconds}[/tex]
Solving:
[tex]Speed=279.167\frac{meters}{ seconds}[/tex]
Then, the average speed would be 279.167 meters per second.
The addition of electron shells results in _____
from the nucleus.
shielding of electrons
Answer here
Answer:
shielding of electrons
Explanation:
The addition of electrons shells results in the shielding of electrons away from the nucleus, most importantly the nuclear pull resulting from the charge.
The nucleus pulls electrons to itself due to the net positive charge on it. As more electronic shell is added, the effect of the pull weakens outward. The inner shell experiences the nuclear pull more than the outer shell electrons.The effect is responsible for a wide range of properties of elements.
The mass of a meteoroid was found to be 1.24 × 107 kilograms. Write the mass in standard notation.
Answer:
The value we are given in the question is 1.24 * 10^7. This form of writing number is called scientific notation. The standard notation is the normal, regular way of writing numbers. Scientific notation and standard notations are interchangeable.
1.24 * 10^7 written in standard notation will be = 1.24 * 10000000 = 12400000.
Thus, the mass of the meteoroid was 12400000 kg.
Explanation:
Which of these charges has the greatest magnitude?
a charge of -5
a charge of -2
a charge of +4
O a charge of +1
Answer:
a charge of +4
that's how I could understand
d) A tank with dimensions: 3m x 2m x 2m contains water upto its half
pertion. What is the pressure at the base of the tank? (density of water
= 1000 kg/m3, g= 9.8 m/s2)
(Ans: 9800 Pa)
Answer:
P = 9800 [Pa]
Explanation:
In order to calculate the pressure at the bottom, we must use the following formula.
P = Ro*g*h
where:
P = pressure [Pa] (units of pascals)
Ro = density of the water = 1000 [kg/m³]
g = gravity acceleration = 9.8 [m/s²]
h = height = 1 [m] (because its half of the portion, the full height is 2 m)
P = 1000*9.8*1
P = 9800 [Pa]
A 12kg cheetah accelerates 24 m/s". What is the force the cheetah needed to run?
Answer:
288N
Explanation:
Given parameters:
Mass of Cheetah = 12kg
Acceleration = 24m/s²
Unknown:
Force needed by the cheetah to run = ?
Solution:
The force needed by the Cheetah to run is the net force.
According to Newton's law;
Force = mass x acceleration
Insert the given parameters and solve;
Force = 12 x 24 = 288N
Solar-powered cars use energy from the Sun to work. A panel on the car absorbs light energy from the Sun, which
then generates an electric current. This electric current, in turn, allows the car to move. Which shows the correct
order of energy transformations that take place in a solar-powered car?
electrical, chemical, kinetic
electrical, kinetic, radiant
radiant, chemical, electrical
radiant, electrical, mechanical
Answer: I Believe Its radiant, electrical, mechanical!
Explanation:
Please correct me if i'm wrong!
Answer:
D) radiant, electrical, mechanical Is correct!
Explanation:
Hope this helps! :)
6th grade science If you answer this your the brainiest
Answer:
8. sketches and models helped the astronauts in their training program as they prepare for their missions
9. before building the Mars lander , students need to sketch their design
PLZ HELP NOW
A boy has a mass of 55 kg. He climbs 15 m up a tree. What is his gain in
GPE? (Don't forget your units)
Answer: mass x height x gravitational field strength (g)
note: gravitational field strength (g) = 10 N/Kg
55 x 15 x 10 = 8250
gpe = 8250j
Explanation:
How high can a human throw a ball if he can throw it with initial velocity 90 mph.
a144.3 m
b 91.82 m
c 82.45 m
d99.82 m
e45.52 m
Answer:
c 82.45 m
Explanation:
To solve this problem, we have to apply the right motion equation.
Given parameter;
Initial velocity = 90mph
So;
Using;
V² = U² - 2gh ; we can solve this problem
V is the final velocity = 0mph
U is the initial velocity
g is the acceleration due to gravity
h is the height
Now insert the parameters and solve;
We need to convert from mph to m/s
1 mph = 0.45m/s
90mph = 40.5m/s
0² = 40.5² - (2 x 9.8 x h)
0 = 1640.25 - 19.6h
-1640.25 = -19.6h
h = 83.7m
Calculate the average atomic mass of caarbon given the following information: Carbon-12 12.000 amu 98.89%
Carbon-12 13.003 amu 1.11%
Answer:
12.01
Explanation:
Given parameters:
Abundance of C-12 = 98.89%
mass of isotope = 12amu
Abundance of C - 12 = 1.11%
mass of isotope = 13.003
Unknown:
Average atomic mass of carbon = ?
Solution:
The average atomic mass ;
R.A.M = (mass of isotope x abundance of isotope)-12 + (mass of isotope x abundance of isotope)- 13
Insert the parameters and solve;
R.A.M =( 12 x 98.89%) + (1.11% x 13.003)
R.A.M = 11.87 + 0.14 = 12.01
How can you determine the mass number of the daughter product after alpha decay has taken place?
Answer:
Reduce the mass number of the parent by 4
Explanation:
To determine the mass number of the daughter product after alpha decay has taken place, reduce the mass number of the parent by 4.
An alpha particle reduces the mass number of the parent by 4 and the atomic number by 2.
It has the the same structure as an helium atom.
So, since helium has mass number of 4 and atomic number of 2, it reduces the daughter product by this number.
What is the benefit of using simple computational models in a spreadsheet application, like the one used in this course, to predict mechanical energy and related values?
(1 point)
It is easy to calculate new scenarios.
It is easy to learn new concepts.
It is easy to compare different cases.
It is easy to detect calculation errors.
Answer:
Option C would be the correct alternative.
Explanation:
An integrated programming program for arranging, evaluating, and saving analytical results seems to be a spreadsheet. Spreadsheets have been established as computerized analogs to worksheets for manual banking. There are various variables in something like a theoretical model that describes the structure being analyzed. By changing the variables as well as sometimes throughout combination while evaluating the outcome, analysis is performed.The other choices offered aren't relevant to the existing contract below in the description section.
Answer:
c
Explanation:
How many significant figures are in 107 moles of sodium
Answer:
3 significant figures
Explanation:
here zero is counted as one of the significant figures since it lies next to an integer.
hence the number has 3 sfg
A basketball with a mass of 0.5 kilograms is accelerated at 2
meters per second2. The net force acting on the mass is
A) 0.5 N
B) ON
C) 1N
D) 2N
Answer: 1N
Explanation: its not 0N.
If a basketball with a mass of 0.5 kilograms is accelerated at 2 meters per second². The net force acting on the mass is 1 Newton, therefore the correct answer is option C.
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
As given in the problem, if a basketball with a mass of 0.5 kilograms is accelerated at 2 meters per second², then we have to find out the force acting on the basketball.
The net force acting on the basketball = 0.5 × 2
= 1 N
Thus, the net force acting on the mass is 1 Newton, therefore the correct answer is option C .
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what is the dimension of resistivity
Answer:
Are you looking for the formula? because if so:
M L^2 T^-3 I^-2
Explanation:
May I have brainliest please? :)
An object with a mass of 6.5 kg accelerates 12.3 m/s2 when an unknown force is applied to it. What is the amount of the force?
Answer:
79.95 kgExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 6.5 × 12.3
We have the final answer as
79.95 kgHope this helps you
What is molasses?
dye
sugar
brown candy
brown syrup
I need help fast please I will give you extra points
Answer: Brown syrup
Explanation:
Answer:
syrup
Explanation:
