Answer:
The electricity produced from the main source which is an electrical generator which is usually close a remote abundant source of natural energy or at a distant location away from the residential areas where the electricity is used
The step up transformer is the device used to raise the voltage and therefore lower the current of the of incoming generated electricity before it is transmitted through high tension cables so that the energy loss from source to destination is reduced and the electricity generated can applied where needed
However, the high voltage transmitted along power lines to reduce energy loss cannot be used as it is by the consumer, partly because it is very harmful in the event of an electric shock and can easily damage household electrical devices, therefore, the high voltage in the power lines is reversed back or lowered into voltages which can be used to power electrical devices in buildings with the use of a step-down transformer
Explanation:
What is the relationship between large amplitude waves and small amplitude waves?
A Both waves have variable energy.
B Large amplitude waves have more energy than small amplitude waves.
C Large amplitude waves have less matter than small amplitude waves.
D Both waves have constant matter.
Answer:
c.large amplitude waves have less matter than small amplitude waves
What are four reasons why it is important to apply for entry at tertiary institutions while you are still at grade 11
Answer:
Explanation:
The main reason for doing this is to get the attention of the tertiary institutions early. There are thousands of students that apply to these institutions every year, depending on the strictness of the acceptance of these institutions it may or may not be difficult for you to enter. Applying while at grade 11 gives you more chances of getting in as you are catching the attention of the institution and showing a high level of interest. This also allows you more chances to enter, since if you are denied you can try again next year. Aside from this, some institutions have specific requirements, applying early can allow you to know what you are missing as they will tell you if you get denied. You can then work towards obtaining these requirements and apply next year.
What are two main types of friction
Answer:There are two main types of friction, static friction and kinetic friction. Static friction operates between two surfaces that aren't moving relative to each other, while kinetic friction acts between objects in motion.
What happens to the volume of sound as the amplitude gets larger?
Describe the parts of a hurricane and the hazards of a Category 3 Hurricane.
A category three hurricane are major ones that can cause incredible damage like blowing off roofs, cause power outages, uproot trees, lead old buildings to fall, etc. The parts of a hurricane are the eye, storm surge, eyewall, rain bands, and outflow.
am i right? please help!
The behavior of the light incident upon this page best illustrates the phenomenon of
A)
diffuse reflection
B)
regular reflection
C)
diffraction
D)
refraction
Answer:
diffraction
Explanation:
The behavior of the light incident upon this page best illustrates the phenomenon of diffraction
hope it help:)
The behaviour of such incident light on just this pages adequately exemplifies the phenomena called Diffraction. A further explanation is below.
DiffractionThe broadening out of waveforms when they transit through such an apertures anywhere around obstructions generally referred to as diffraction.
It happens whenever the aperture as well as obstruction seems of the equivalent order of magnitude as that of the transmitted beam's wavelength.
Thus the approach above i.e., option C is correct.
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Which food provide the best nutrients
Answer: Foods that naturally are nutrient-rich include fruits and vegetables. Lean meats, fish, whole grains, dairy, legumes, nuts, and seeds also are high in nutrients.
Metal sphere A has a charge of -2 units and an identical sphere B has a charge of -4 units. If the spheres are brought into contact with each other and then separted the charge on sphere b will be
Answer:
q1 = q₂= -3
therefore each sphere has the same charge of -3 untis
Explanation:
The metallic spheres have mobile charge, so when the two spheres come into contact the total charge
Q_total = q₁ + q₂
Q_total = -2 -4
Q_total = -6 units
it is distributed in between the two spheres evenly since the charges of the same sign repel each other.
When the spheres separate each one has
q₁ = -6/2
q1 = q₂= -3
therefore each sphere has the same charge of -3 untis
One of the ways in which a coin operated vending machine checks to make sure that the coins fed to it are genuine is to roll them past a strong magnet. Group of answer choices Coins made of a good conductor will slow down as they roll past the magnet. Coins made of a good conductor will speed up as they roll past the magnet. Only coins made of magnetic materials such as iron will be affected by the magnet. The coins will become magnetized and thus can easily be sorted.
Answer:
Coins made of a good conductor will slow down as they roll past the magnet.
Explanation:
Conduction involves the transfer of electric charge or thermal energy due to the movement of particles. When the conduction relates to electric charge, it is known as electrical conduction while when it relates to thermal energy, it is known as heat conduction.
One of the ways in which a coin operated vending machine checks to make sure that the coins fed to it are genuine is to roll them past a strong magnet. As such, coins made of a good conductor will slow down as they roll past the magnet due to the force of attraction that exists between the magnet and the coin (metal).
This ultimately implies that, the magnet tends to attract the coin to itself and as such slowing down the motion of the coin. Similarly, if it's a fake coin, it simply means it would be a bad conductor and as such it will roll fast past the strong magnet.
What happens when an object is moved against gravity, such as rolling a toy car up a
ramp?
a. Potential energy does not change
b. Potential energy decreases as it is transformed into kinetic energy
c. Kinetic energy does not change
d. Kinetic energy is transformed into potential energy
Answer:
gravitational force remain constant
we have that from the Question, it can be said that
What happens when an object is moved against gravity, such as rolling a toy car up is
Kinetic energy is transformed into potential energyOpion DFrom the Question we are told
What happens when an object is moved against gravity, such as rolling a toy car up
a. Potential energy does not change
b. Potential energy decreases as it is transformed into kinetic energy
c. Kinetic energy does not change
d. Kinetic energy is transformed into potential energy
Generally the equation for Kinetic energy is mathematically given as
K.E=1/2mv^2
Generally the equation for Potential energy is mathematically given as
P.E=mgh
Therefore
With increase in height of the car Kinetic energy is transformed into potential energy as g remains constant
Hence
What happens when an object is moved against gravity, such as rolling a toy car up is
Kinetic energy is transformed into potential energyOpion DFor more information on this visit
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A 50 kg girl in a roller coaster with a speed of 30 m/s is traveling around a horizontal circle with a radius of 25 m. What is the centripetal force acting on the girl.
Answer:
F=mv^2/r = 50x(900)/625 = 72N
The centripetal force of 180 N is acting on the girl who is in the roller coaster ride with a speed of 30 m/s in a horizontal circle with a radius of 25m.
What is Centripetal force?
A centripetal force is the force which makes a body follow a circular path. Here, the direction is always orthogonal to the motion of body and towards a fixed point of instantaneous center of curvature of path.
The centripetal force acting on an object in circular path can be calculated with the help of a formula:
F = mv²/r
where, F = centripetal force acting on the object,
m = mass of the object,
v = velocity of the object,
r = radius of the circular path.
By putting the given values into the formula, we get:
F = [50 × (30)²]/25
F = [50 × 900]/25
F = 4500/25
F = 180 N
Therefore, the centripetal force acting on the girl is 180 N.
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The only players permitted to wear mitts over gloves are _________.
1 the pitcher and first base player
2 the catcher and outfielder
3 the catcher and first base player
4 the catcher and pitcher
Answer:
the catcher and outfielder
Explanation:
Answer: The catcher and the player at first base are the only players permitted to wear mitts rather than gloves. So, the answer would be 3.
Explanation: I had this on a quiz and got it right.
Hope this helps!
Write a 4-5 sentences paragraph explaining how one of the following organisms with adapt to a new environment (what adaptations would they not need and what ones what they need?What would they eat?)
1. Polar bear moving to a tropical rainforest.
2. Lizard moving to the North Pole
Be Creative!!!!!
No googling! Or no links
Answer:
We're supposed to write a 4-5 paragraph essay for only 6 points...sorry but no
Explanation:
) A 1.0kW kettle contains 500g of boiling waterCalculate the time needed to evaporate all the water
in the kettle (specific latent heat of vaporization2.26 MJ kg-1
Answer:
t = 1130 s = 18.83 min
Explanation:
First, we will calculate the energy required to evaporate 500 g of water:
[tex]E = mL[/tex]
where,
E = Energy Required for evaporation of water =?
m = mass of water = 500 g = 0.5 kg
L = Latent heat of vaporization of water = 2.26 MJ/kg = 2260 KJ/kg
Therefore,
[tex]E = (0.5\ kg)(2260\ KJ/kg)\\E = 1130\ KJ[/tex]
Now, we will calculate the time required:
[tex]P = \frac{W}{t}\\\\t = \frac{W}{P}[/tex]
where,
t = time = ?
P = Power of kettle = 1 KW
Therefore,
[tex]t = \frac{1130\ KJ}{1 KW}\\\\[/tex]
t = 1130 s = 18.83 min
The total amount of energy ____
stays the same.
A. Sometimes
B. Rarely
C. Never
D. Always
Answer:
D
Explanation:
In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time.
what is the difference between malleability and ductile ??
Please don't post invalid answer please..!!
Please post correct answer please..!!
Answer:
A malleable material is one in which a thin sheet can be easily formed by hammering or rolling. ... In contrast, ductility is the ability of a solid material to deform under tensile stress.
Explain how radioactive decay works for measuring the absolute age of ancient objects.
Answer: Radioactive decay is the breakdown of a material into stable isotopes which are used for determining the age of the ancient material.
Explanation:
The radioactive decay is a natural process in which an ancient or old material whether in the form of rock, object or fossil break down into elements. Carbon 14 is an unstable isotope which decays to produce stable elements, the dating procedure uses these stable elements and the rate of decay of the isotopes to determine the age of absolute ancient of the objects but exact age cannot be determined just an approximation can be accepted.
Explain how it is that you could have 2 parents with brown eyes, but you have blue eyes. Talk about the role chromosomes, genotypes, and alleles play in making something like that happen.
Help please will give b to the best one!
Answer:
Because the two genes depend on each other, it is possible for someone to actually be a carrier of a dominant trait like brown eyes. And if two blue eyed parents are carriers, then they can have a brown eyed child. Genetics is much bkj
Explanation:
So all you light eyed parents with dark eyed kids, stop asking those paternity questions (unless you have other reasons to be suspicious). Darker eyed kids are a real possibility that can now be explained with real genes.
HELP ME
PLZZZ
ASAP
HELP
LIFE
OR
DEATH
SITUATION
The half-life of carbon-14 is 5730 years.
Carbon-14 is used for carbon dating. Carbon dating can tell us how old some
objects are
A skeleton was carbon dated. The results showed that there was only 12.5% of the
original amount of carbon-14 left in the skeleton.
Calculate the age of the skeleton.
HELP ASAP PLZZZ I BEG YOUUUU
Answer:
13,308 MAYBE IF IT ISN'T IM SO SORRY
Explanation:
The global winds and moisture belts indicate that large amounts of rainfall occur at
the Earth's equator because air is
it should be rising and converging
The global winds and moisture belts indicate that large amounts of rainfall occur at the Earth's equator because air is rising and converging.
What is Earth's equator?The equator is a large circle that circles the planet Earth, lying in a plane perpendicular to the axis of the planet and being equally spaced from all four geographic poles.
Rainfall in equatorial regions averages 4000mm per year. Every other raining produces about 22 days of precipitation in a month. The equatorial regions have higher temperatures because solar radiation produces a lot of heat there.
The cold air filters down into the lower levels of the atmosphere because the hot air is less dense here than the cold air. The tropical regions become warmer as a result. In the tropical rain belt, the tropical climate predominates.
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is an object that has 3 electrons and 5 protons a positive charge?
Answer:
Hello, Yes i believe it would be a positive charge considering electrons have a negative charge while protons have a positive charge.
Explanation:
Can anyone help me with this question please .
I’ll mark as brainliest
No links
Answer:
A
Explanation:
The wavelength is the spatial time of an occasional wave, the distance over which the wave's shape rehashes.
Hope this helped!!
Answer:
wavelength
Explanation:
Fig. 2.1 shows a hammer being used to drive a nail into a piece of wood.
hammer head
-nail
wood
Fig. 2.1
The mass of the hammer head is 0.15 kg.
The speed of the hammer head when it hits the nail is 8.0m/s.
The time for which the hammer head is in contact with the nail is 0.0015s.
The hammer head stops after hitting the nail.
(a) Calculate the change in momentum of the hammer head.
Answer:
ΔP = - 1.2 Ns
Explanation:
The change in momentum of the hammer head can be given as follows:
[tex]\Delta P = P_f - P_i\\[/tex]
where,
ΔP = Change in Momentum = ?
Pf = Final Momentum
Pi - Initial Momentum
Therefore,
[tex]\Delta P = mv_f - mv_i\\\Delta P = m(v_f - v_i)[/tex]
where,
m = mass of hammer head = 0.15 kg
vf = final speed of hammer = 0 m/s
vi = initial speed of hammer = 8 m/s
Therefore,
[tex]\Delta P = (0.15\ kg)(0\ m/s-8\ m/s)[/tex]
ΔP = - 1.2 Ns
Transform plate tectonic boundaries slide/move past each other, rubbing along the edges cause what types of damage?
Question 3 options:
tornadoes, flooding, destruction
hurricanes, flooding, wave surge
earthquakes, tsunami, landslides
blizzards, freezing conditions, snow drifts
Transform plate tectonic boundaries slide/move past each other, rubbing along the edges causing earthquakes, tsunami, landslides
What is earthquake?An earthquake is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves.
The answer is c is because when tectonic plates are rubbing against each other that’s how an earthquake is formed.
another reason the answer is C is because when the tectonic plates are moving together it can cause the land to slide.
the last reason the answer is C is because when the tectonic plates in the ocean move it can cause a tsunami.
Hence transform plate tectonic boundaries slide/move past each other, rubbing along the edges causing earthquakes, tsunami, landslides
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What is number 5?! I’m so confused.
Answer:
i think it's A
Explanation:
Answer:
The answer is A
Explanation:
At high elevations or high latitudes, some of the water that falls on land does not immediately soak in , run off, evaporate or transpire. where is the water being temporarily stored?
Answer:
The water is stored in ice sheets and as snow
Explanation:
Temperature reduces with an increase in altitudes. The standard laps rate is 6.5°C per 1,000 m gained in elevation
At very high elevations, therefore, the air is usually very cold such that when an elevation of 4,500 meters is reached at the equator, it is possible to observe snowfall and the water remain temporarily stored on the surface of the mountain as ice and snow
A contour map has 14 concentric circles, each placed 1/2 centimeters apart. The map's scale indicates 1cm = 10 ft. What is the structure, and what are its dimensions?
Answer:
B. A hill 70ft tall.
Explanation:
In its elemental state, carbon is available as:
a
Coal
b Graphite
C Diamond
All of the above
Answer: D all of the above
Explanation: Coal, Graphite, Diamond are all allotropes of Carbon. Hope this helps :)
How much work is done on a pumpkin with a force of 24 newtons when you lift it 15 meters? *
Answer:
I'm not that busy solving but I'll tell you the formula that Force x distance is equal to work done
The work is done on a pumpkin when we lift it by 15 m with 24 N is 360 J
What is Work ?Work done is the amount energy gained (loosed) in bringing the body from initial position to final position. It is denoted by W and its SI unit is joule(J).
i.e. Work(W) is force(F) times displacement(s).
W=F× s
When a body is displaced with 1 newton of force by 1 m, then we can say that work has been done on the body by 1 joule.
Writing for it's dimension,
W=F× s
Force has dimension [L¹ M¹ T²]
Displacement has dimension [L¹]
multiplying both the dimensions Force and Displacement
we get,
dimension of Work [L² M¹ T²]
According to newton's second law of motion,
Force(F) is mass(M) times acceleration(a).
i.e. F=ma
Given,
Force = 24 N
Displacement = 15 m
W=F.s= 24*15 = 360 J
Hence work done on pumpkin is 360 J
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