Answer:
displacement can be zero...because it only care about initial and final positions50 POINTS !!!
What happens to ice when in water?
Which of the following statements best describes the relationship between the environment and the collective health of the world? A. The environment does not affect our health. B. When the environment is damaged, our health improves. C. What is good for the environment is good for our health. D. Our collective health is not related to the health of the environment. Please select the best answer from the choices provided. A B C D Mark this and return
Answer:
its C
Explanation:
The statement that describes the relationship between the environment and the collective health of the world is; "what is good for the environment is good for our health."
Humans must maintain a very good interaction with their environment because the interaction between man and his environment is very necessary for healthy living.
Man depends on water, air etc to sustain life. These are part of the natural environment, when these are polluted due to neglect of the environment, human health is adversely affected.
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How do you score a goal in team handball ?
Answer:a goal is scored by throwing the ball into the goal post and is confirmed by deciding that’s if the ball has hit the tape mark or not
Explanation:
What is the momentum of a 120 pound bicyclist that is traveling at 25 mph?
A seismic wave is energy released as the result of rock movement along a fault.
T/F
Answer:
TRUE
Explanation:
There are two tall slides at the newly opened theme park, a blue slide and a red slide. The slides have such a height that, if it weren't for friction and air resistance, riders would travel twice as fast at the bottom of the blue slide as they do at the bottom of the red slide. If the red slide is 8m tall, how tall is the blue slide?
Answer:
32 m
Explanation:
By energy conservation, total energy at the top of slide must be equal to the total energy at at the bottom.
therefore
mgh = (1/2)mv^2
v^2= 2gh
[tex]v = \sqrt(2gh)[/tex] ..............(1) i.e., velocity is a function of height of slide.
1st part
Let height of blue slide be H and height of red slide be h.
Let velocity of rider in blue slide= V and red slide= v
At the bottom of slide,
From equation (1)
therefore
[tex]\frac{V^{2}}{v^{2}} = \frac{2gH}{2gh}[/tex]
Given, V= 2v
[tex]\therefore \frac{4v^{2}}{v^2{}} = \frac{H}{h}[/tex]
H = 4h
therefore, height of blue slide is 4 times that of red slide= 4*8=32 m
The person with the greatest ___ hits earth first
A. Volume
B. Mass
C. Density
D. Weight
The person with the greatest density will hit the earth first.
What is Density?This is regarded as the mass per unit volume of a substance.
Density = mass/ volume
In objects with different densities, the drag and buoyancy forces will be the
same. They will however have different gravitational force in which the
denser object has more compared to lighter ones.
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is there any possibility to make 100% efficient system
Answer:
yes
Explanation:
its awesome
A person walks 2.00 m east, then turns and goes 4.00 m west, then turns and goes back 1.00 m east.
Answer:
i got -1.00
Explanation:
Answer:
he is 1.0 west in the end.
Explanation:
think of it like a number line and you are starting on 0.
2.0m east is like 2 steps to the left (-2). Then you go back to the right (west) 4 steps (ending up at 2.0 meters). then you take one step back in the other direction where you are now at 1.0m on the right or west of 0.
Which vector below goes from (0,0) to (-2,4)?
A. c
B. a
C. b
D. d
Answer:
I believe it is A.c
Explanation:
hope its right
Answer:
the correct answer is A with a line on top
Explanation:
I just did the quiz
All I need help on, is the first one on the top row. Thanks :))
Answer:
1a)40-27=13
1b) heat
1c)efficiency = W out/W in
so 27/40= 67%
Which type of mirror would you use to cook a hot dog and why?
why water molecules are closer together in the liquid state than in the solid state.
Answer:
because of the hydrogen bonds, as water molecules come together they stick to one another for a small, but significant amount of time. This slows them down, and holds them closer to one another. They become a liquid; a different state of matter where the molecules are closer and slower than in a gas.
Answer:
When water is in its solid-state, the water molecules are packed close together preventing it from changing shape.
Explanation:
In general, when considering the states of matter, solids are denser than liquids, and normally liquids are denser than gases.
Hope this helps!
Brain-List?
at terminal velocity what will be relationship between drag force and driving force
Answer:
The answer to this question is given below in this explanation section.
Explanation:
"relationship between drag force and driving force"
The velocity at any time during the flight depends on the corresponding acceleration of the vehicle and the balance of forces acting of the vehicle.Forces acceleration and velocity are all vector quantities having both a magnitude and a direction.When describing the motion of an object caused by forces,one must account for both the magnitude and direction.The forces present during coasting flights are the drag and the weight.The weight is constant is magnitude and is always directed toward the center of earth.The magnitude of the drag change the square of the velocity.During ascent the drag is in the same direction as the weight .But during descent the drag opposes the weight.
For the descending rocket the next vertical external force F is equal to the difference between the drag D and the weight W:
F=D-W
The impetus power or energy behind something in motion,as in he was clearly the driving force in the new administration This term transfer the force that sets in motion an engine or vehicle to other enterprises.Gravity is the driving force for an object falling towards the ground.
A skate boarder relies on the ground pushing on the sole of her shoe to drive her skateboard along.
Which type of electromagnetic waves would the best to use in an object designed to cook food?
А. gamma waves
B. visible waves
C. infrared waves
D. microwaves
Answer:
C. infrared waves
Explanation:
Microwaves are the electromagnetic waves which would the best to use in an object designed to cook food. Thus, the correct option is D.
What are Microwaves?Microwave is a form of electromagnetic radiation with the wavelengths ranging from about one meter to about one millimeter which is corresponding to the frequencies in the range between 300 MHz and 300 GHz, respectively.
Microwaves are used for cooking food faster than the conventional ovens and would not make a mess in the process. This reheats food instantly quickly. It is helpful for the health conscious people. Microwaves also ensure that a person will never burn the food again. Microwaves are also very economical and energy efficient.
Therefore, the correct option is D.
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Visible light is the _______ that our eyes can see.
Answer:
Spectrum because it could respond to a specific color based upon how you humans typically perceive Lights of the wavelength
Answer:
spectrum
Explanation:
consequences and application of heat
Answer:
Prolonged exposure to extreme heat can cause heat exhaustion, heat cramps, heat stroke, and death, as well as exacerbate preexisting chronic conditions, such as various respiratory, cerebral, and cardiovascular diseases.
Quick please I'll give you brainliest.
Answer:
its c
Explanation:
Simone is walking her dog on a leash. The dog is pulling with a force of 32 N to the right and Simone is pulling backward with a force of 16 N.
What is the net force on them?
N
Is this force balanced or unbalanced?
Will the dog move forward, backward, or remain stationary?
Answer:1.16
2.unbalanced
Explanation:
Answer:
What is the net force on them?
⇒ 16 N
Is this force balanced or unbalanced?
⇒ unbalanced
Will the dog move forward, backward, or remain stationary?
⇒ forward
Explanation:
did it :)
Speed – time graph of uniform motion is horizontal straight line.
Select one:
a. TRUE
b. FALSE
a ball is thrown vertically upwards from the ground. The ball rises and falls back to the ground. Describe the changes in the mechanical energy of the ball as it rises.
Answer:
as the ball is thrown, the enegry rises up, when it falls, the ball relseases all energy
Explanation:
A ray diagram is shown.
Answer:
Angle of Refraction ?
Explanation:
My decided answer on this question
2 Which of the following effectively summarizes paragraph 2?
A The orientation in space, relative to the Sun, is the cause
of Earth's seasonal changes.
1
B There is an imaginary pole running through the center of
Earth from the North Pole to the South Pole, which is called
an axis.
C We also learned that Earth's axis is tilted 23.5
degrees from the perpendicular of the plane of the
ecliptic.
D The northern hemisphere has more daylight hours.
Answer:B
Explanation:
The statement that summarizes the paragraph is northern hemisphere has more daylight hours.
What is Earth?The Earth is part of the nine planet and it comprises of the equator, northern and southern hemisphere.
It is the most suitable place for living because it have water,oxygen and other gases that support life.
Therefore, The statement that summarizes the paragraph is northern hemisphere has more daylight hours.
Learn more about Earth below.
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repeating anyone ineed answers plsss?
Answer:
the answer of question no5 is b
What are the social consequences of sustainable use of land?
Major land–use changes have occurred in the United States during the past 25 years. The total area of cropland, pastureland and rangeland decreased by 76 million acres in the lower 48 states from 1982 to 2003, while the total area of developed land increased by 36 million acres or 48%. What are the potential economic, social and environmental impacts of land use changes? How does land use change affect agriculture and rural communities? What are the important economic and environmental implications for commodity production and trade, water and soil conservation, open space preservation, and other policy issues? This article addresses some of these issues and their policy implications.
You can use the curved part of a spoon as a mirror because it
light.
Which best completes the statement?
O reflects
O refracts
O absorbs
O enhances
Answer:
the correct answer is actually refelcts
Explanation:
What is radioactive dating? How is it used to determine age of something?
answer 2 question basically please Help!!!
Answer:
Technique of comparing abundance ratio between radioactive isotopes to a reference isotope to determine the age of a material called radioactive dating. It determines the age by having a more abundance of isotopes in the cellular being.
Based on details in The Riddle of the Rosetta Stone, which statement best describes Jean-Baptiste Fourier's influence on Jean-François Champollion?
Answer:
hello your question is incomplete below is the missing part of the complete question
which statement best describes Jean-Baptiste Fourier’s influence on Jean-François Champollion? Fourier shared his research about mathematics with Champollion, which aided him in his research. Fourier was the first to introduce Champollion to the hieroglyphs on the Rosetta Stone, which fascinated him. Fourier shared his findings about the Rosetta Stone with Champollion, which helped him in his research. Fourier was the first to introduce Champollion to a variety of languages, which prompted his love of languages.
answer : Fourier was the first to introduce Champollion to a variety of languages, which prompted his love of languages.
Explanation:
Jean-Baptiste Fourier's influence on Jean-Francois Champollion is that Fourier was the first to introduce Champollion to a variety of languages, which prompted his love of languages. also Fourier was a mathematician who pleaded on the behalf of Champollion when he was about to be adopted into the military.
A solar cell that transforms 300 J of light energy into 45 J of electrical energy and 255 J of wasted energy. whats the efficiency
Answer:
15%
Explanation:
Step one:
Given data
Energy source= 300J
Useful energy = 45J
Waste energy = 255J
Required
The efficiency of the solar system
Step two:
The efficiency is computed by factoring only the useful work and the energy source
Efficiency= 45/300*100
Efficiency= 0.15*100
Efficiency= 15%
Solve for v
when
d = 10 and
t=5
Answer:
asfsdfasasfsda
Explanation:
Answer:
IDEK HOW TO SOLVE
Explanation: