Answer:
2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost
Which equation determines the acceleration of an object moving in a straight line?
You must calculate the change in speed per unit of time.
Group of answer choices
Acceleration = ( initial speed - final speed ) / time
Acceleration = time / ( initial speed - final speed)
Acceleration = time / ( final speed - initial speed)
Acceleration = ( final speed - initial speed ) / time
Answer:
Option D
Last option
GOOD LUCK FOR THE FUTURE! :)
What will happen when a charged object touches a neutral object?
if a charged object touches a neutral object it will be a short circuit.
Answer:
will force atom(electrons) within the escort (conductor) to go (move).
Explanation:
a stone is dropped from the top of a tower 400 m high and at the same time another stone is projected upward vertically from the ground with a velocity of 100 m/s. find where and when the two stones will meet.
Answer:The stones will be at the same height of 62.59 feets 4.4 seconds later.
Explanation:
Which of the following describes a reference point?
A. The location of an object before its motion begins
B. The center point of a grid
C. The point at which the direction of motion changes
D. The position of an object after its motion has stopped
Please Give a detailed explanation on F1 F2 generation,
Self , cross breeding results etc..
please....
Answer:
F1 will be all blue
F2 25% will be white
Explanation:
By cross breeding BB and bb all flowers will end up as Bb in the first generation.
In the second generation using a punet square and breeding Bb with Bb then 1/4 is bb and therefor 1/4 is white
difference between sold and liquid
Explanation:
Solids have closely packed particles and vibrate about a fixed position, they also have a fixed volume.
liquid have close particles but which are able to move with a bit of kinetic energy, for this reason they have no fixed volume but take the volume of the container or vessel
Please help, is an electric lamp a luminous object?
When people place a metal saucepan on the heating element of a stove, heat is transferred from the element to the saucepan by: A reflection.
B convection.
C conduction.
D radiation.
What happens to the arrangement of atoms in matter as it is heated?
Answer:
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance.
Explanation:
Wave A has a frequency of 1.6 Hz, and Wave B has a frequency of 3.2 Hz. If Wave A has a wavelength of 1.0m, what do you expect will be the wavelength of Wave B?
OPTIONS:
A) 2.0m
B) 1.0m
C) 0.50m
D) 0.25m
Answer:
C
Explanation:
A- velocity=wavelength*frequency
velocity=1.0*1.6.......=1.6 m/s
B- wavelength=velocity/frequency
wavelength=1.6/3.2.....=0.5 meters
Some students found this information about an energy saving lamp and a filament lamp that give out almost the same amount of light.
Describe the advantages and disadvantages of each type of lamp.
Answer:
By replacing your home's five most frequently used light fixtures or bulbs with models that have earned the ENERGY STAR, you can save $75 each year.
Compared to traditional incandescents, energy-efficient lightbulbs such as halogen incandescents, compact fluorescent lamps (CFLs), and light emitting diodes (LEDs) have the following advantages:
Typically use about 25%-80% less energy than traditional incandescents, saving you money
Can last 3-25 times longer.
Classify each substance as either a conductor or insulator.
A sample of mercury:
✔ conductor
A piece of glass:
✔ insulator
A rubber hose:
✔ insulator
A negatively ionized lithium paste:
✔ conductor
The correct classification of each substance is as follows:
A sample of mercury: conductorA piece of glass: insulatorA rubber hose: insulatorA negatively ionized lithium paste: conductorWhat are conductors and insulators?A conductor is a substance that can transmit electricity, heat, light or sound while an insulator is a substance that does not transmit heat, sound or electricity.
Conductors are usually metals while insulators are usually non-metals. Examples of conductors include;
IronAluminumCopperExamples of insulators include;
GlassPaperWoodSilkTherefore, the correct classification of each substance is as follows:
A sample of mercury: conductorA piece of glass: insulatorA rubber hose: insulatorA negatively ionized lithium paste: conductorLearn more about conduction at: https://brainly.com/question/18084972
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Answer:
Explanation:
E2020
How are ultraviolet waves used for communication
Plz help me with this question ASAP
ok i dont know to be honest
Provide two examples of how health care workers can demonstrate their commitment to quality control through their personal appearance.
Help! y’all get brainliest
Answer:
True
Explanation:
Dietary fiber contains an indigestible material known as cellulite. This is false statement.
What is Dietary fiber?Plant substances that are not broken down by human digestive enzymes are referred to as dietary fiber.
Only lignin and a few polysaccharides were recognized as meeting this criterion in the late 20th century, but resistant starch and oligosaccharides were listed as dietary fiber components in the early 21st century.
The phrase "all polysaccharides and lignin, which are not digested by the endogenous secretion of the human digestive tract" is commonly used to define dietary fiber.
At the moment, the majority of animal nutritionists either use a physiological definition, which states that "dietary components resistant to breakdown by mammalian enzymes," or a chemical definition, which states that "the sum of non-starch polysaccharides (NSP) and lignin."
Learn more about Dietary fiber here:
https://brainly.com/question/13674843
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After reading a book, Julio looks out of the window and sees clouds in the distance. Which change allows Julio to clearly see the clouds after looking at his book? His corneas become flatter. His lenses change shape. His optic nerves begin sending signals. His vitreous humor becomes denser.
Answer:
Lens change
Explanation:
by changing the shape of the lens the rays from the clouds will be able to refract correctly in the lens then create the correct upside-down image on the retina.
Hope it helped
PLS mark BRAINLIEST
Answer:
His lenses change shape.
Explanation:
just took the quiz
How much work did he do if he traveled 20 meters?
Speed = Distance Time Velocity = 1. Find the velocity of a truck that travels 75miles north in 2.5 hours? List: Equation: Substitution: Answer with units:
Answer:
187.5 m/s (i think)
Explanation:
If you use the formula V= T times displacement you can find this out by doing the following-
Displacement equals 75 m
T equals 2.5 hrs
75x2.5= 187.5
and since velocity is measured in m/s, it becomes
187.5 m/s
hehe i hate being a single girl....what physical properties dose europium have
Answer:
Europium has a bright shiny surface. it's steel grey and has a melting point of 826 degree Celsius and a boiling point of about 1,489 degree Celsius.
Explanation:
the density is 5.24 grams per cubic centimeter.
What is the momentum of a 750 kg car traveling at a velocity of 25 m/s north?
Answer:
18750 kg-m/s
Explanation:
Momentum = mass x velocity
Answer:
18750 kg-m/s
Explanation: Momentum = mass x velocity 750x25 = 18750 kg-m/s
Can you brainlist
Why does the first row in our periodic table
only have two elements?
A) because each orbital in every sub-level only holds
two electrons
B) because Bohr only knew about two elements
C) because the first energy level only holds two
electrons total
Help me plssss
Answer:
B
Explanation:
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Hopes this helps
♡ good luck 。 ♡
┗━━━━━━━┛
Answer:
C option is correct
Explanation:
C) because the first energy level only holds two electrons.
is there a gravitational force of attraction between your phone and the earth?
1) A pendulum is configured to have a period of 2 seconds.
What is the length of the pendulum? (Use 10 m/s^2 for g)
If you doubled the length of the pendulum, what would its New Period be?
2) In a car collision, a car experiences a force for 1 seconds. The car’s mass is 700 kg and it was moving at 20 m/s before the collision and slowed down to 8 m/s.
What is the force on the car during the collision?
If the collision was with a 650 kg car that was at rest, what was the speed of the 650 kg car after the collision?
"The" (and any subsequent words) was ignored because we limit queries to 32 words.
A farmer lifts a bale of hay to a hayloft that is 11m off the ground . If he uses a force of 280 N , how much work does the farmer do ?
Answer:
3,080 J
Explanation:
280 x 11 =3,080 J
Fossil fuels are burned, transferring their chemical potential energy to heat energy. How are nuclear power stations different?
Answer:
fossil fuels are natural and limited, nuclear is man made and more toxic
Explanation:
What is momentum? And it’s types?
Answer:
Momentum is the product of mass and velocity. The two types of momentum are angular and linear.
Explanation:
Answer:
Explanation: (Momentum is mass * velocity. Its units, in the SI system are kilogram meter per second) What is Inertia?
In physics, momentum is the product of mass and velocity. The greater the product of this equation, the greater the momentum. In science, there are two types of momentum: angular and linear, which concern different types of moving objects. However, that is not where the definition stops. The word momentum is also used as part of everyday speech, and is one of the very few physics concept whose metaphorical definition is the same as its actual one.
I HOPE THIS ANSWER WILL HELP YOU!!!
Which of the following terms are needed to completely describe speed?
Check all that apply.
A. Direction
B. Units
C. Mass
D. Number
Answer: c. and a
Explanation:
Do you think we might have problems with not enough water to supply our needs (water scarcity) in the
ture? Why or why not? If you answered yes, what might the causes be?
Answer:
Water scarcity (water stress or water crisis) is the lack of fresh water resources to meet the standard water demand. Humanity is facing a water crisis, due to unequal distribution (exacerbated by climate change) resulting in some very wet and some very dry geographic locations, plus a sharp rise in global freshwater demand in recent decades driven by industry. Water scarcity can also be caused by droughts, lack of rainfall, or pollution. This was listed in 2019 by the World Economic Forum as one of the largest global risks in terms of potential impact over the next decade.[1] It is manifested by partial or no satisfaction of expressed demand, economic competition for water quantity or quality, disputes between users, irreversible depletion of groundwater, and negative impacts on the environment.[2] Two-thirds of the global population (4 billion people) live under conditions of severe water scarcity at least 1 month of the year.[3][4][5][6] Half a billion people in the world face severe water scarcity all year round.[3] Half of the world's largest cities experience water scarcity.[5]
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i have finals! pls help
(2). a = v/t
but v =s/t
a =s/t÷t
a=s/t×t
a=s/t²
a=220/5.21²
a=8.10m/s²
Explanation:
For the question 1, just imput the value of t into the equation