Answers
Answer:
A: matter or mass cannot be created or destroyed
Related Questions
describe what a fuel cell is, and what the practical importance of such a device might be
Answers
Answer:
Fuel cells are used for primary and backup power for commercial, industrial and residential buildings and in remote or inaccessible areas. They are also used to power fuel cell vehicles, including forklifts, automobiles, buses, boats, motorcycles and submarines.
Explanation:
hope it helps you!!
How’s life going
Yes I would like to know
No guys this is not for school
Answers
Answer:
Good.
Explanation:
djsbeusjsbwjdkdjxjwnsjdjd
Answer:
Hi!
Its okay i geuss. lots of school work :\
what about you? :)
thanks for the points!
Which statement most likely describes the relationship between ethylene and polyethylene?
Answers
Answer:
Ethylene use falls into two main categories: 1) as a monomer, from which longer carbon chains are constructed, and 2) as a starting material for other two-carbon compounds. The first of these is the single largest use of ethylene, consuming about one-half of the annual output. Polymerization (the repetitive joining of many small molecules into larger ones) of ethylene gives polyethylene, a polymer having many uses, particularly in the production of packaging films, wire coatings, and squeeze bottles. When polymerization is carried out at high pressures and temperatures, the product is called low-density polyethylene and has properties different from the high-density polyethylene formed by polymerization under Ziegler-Natta catalytic conditions (see industrial polymers).
Explanation:
Help pls do the last two all work and last two questions
Answers
d1 = 15 miles
t1 = 1 hour
d2 = 25 miles
t2 = 2 hours
d = 15 + 25 = 40 miles
t = 1 + 2 = 3 hours
[tex]avg. \: speed \: = \: \frac{total \: distance}{total \: time} [/tex]
[tex]avg. \: speed \: = \frac{40}{3} [/tex]
[tex]avg. \: speed \: = 13.33mi \: hr ^{ - 1} [/tex]
How does solar radiation affect the thermosphere?
God bless all! :)
Answers
Answer:
Thermospheric temperatures increase with altitude due to absorption of highly energetic solar radiation. ... Radiation causes the atmosphere particles in this layer to become electrically charged particles, enabling radio waves to be refracted and thus be received beyond the horizon.
Explanation:
Answer: How does solar radiation affect the thermosphere?
Explanation: During periods of high solar activity, the X-ray and ultraviolet radiation from the Sun increase, and the thermosphere swells as it sops up this increase in energy from the Sun. As the Sun approaches solar minimum, the thermosphere cools and shrinks as the intensity of the X-ray and ultraviolet radiation decreases.
Answer 1-8
(ANSWER THE WHOLE THING AND NOT JUST 1-2 QUESTIONS)
Answers
Answer:
1.potential
2.chemical
3.sound
4.nuclear
5.light
6.nuclear
7.mechanical
8.thermal
2) Chemical Energy
3) Sound energy
4) Nuclear energy
5) Light energy
6) Nuclear energy
7) Mechanical energy
8) Thermal energy
Hope this helps✨❤️
Do you have quantitative data (numerical results or calculations)? Do you have qualitative data (written observations and descriptions)? How can you organize this date for your report?
Lab-Motion
Answers
Answer:
this is what I put, I should also mention I got 100% so I doubt its wrong
Explanation:
Newton's second law is a quantitative description of the changes that a force can produce in the motion of a body. "It states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it". The momentum of a body is equal to the product of its mass and its velocity. I can include this information in the report or a more detailed version that can make up about 60% of Newton's second law explanation.
I have all the answers if anyone needs more
[PICTURE ATTACHED] help please
Answers
Answer:
i think its A
Explanation:
i need an answer ASAP
What important role do sand dunes play?
Answers
Answer:
Keeps tides on the shore and away from the city
Explanation
Sand dunes are essential in coastal areas due to their significant roles. They act as natural barriers, protecting coastlines from erosion and storm surges. These dunes offer unique habitats for specialized plants and animals adapted to sandy environments.
Moreover, they contribute to groundwater recharge by collecting and storing rainwater. Their presence reduces wind erosion and serves as windbreaks, creating more stable conditions. Touristically, sand dunes attract visitors for activities like hiking and sandboarding, benefiting local economies.
The root systems of dune plants stabilize the soil, preventing further erosion. Overall, sand dunes are vital for coastal ecosystem maintenance, biodiversity support, and the well-being of both nature and human communities.
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In order for conduction to transfer heat from one object to another, what must be true?
aThe objects should be far apart.
b There must be air circulation.
c The objects need to be touching.
d Solar energy is required.
Answers
Answer:
c the objects need to touch
3 When a kicker on the football team kicks a field goal, which forces are evident?
A The action of his foot striking the ball and the reaction of the ball against his foot.
B The mass of the ball being accelerated from rest by the kicker.
C Air friction slowing the ball as it is flying through the goal posts.
D All of these.
Answers
Answer:
The moment the ball leaves the foot, it stops accelerating, and from this point forward only two forces are exerted upon it: the friction with the air, which slows the ball's motion, and gravity, which pulls it down. As the ball moves, it slows and falls down.
Answer:
hm hm hmm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hm hmh hmh hm hm hm hm hm
Explanation:
NEWWWW SORRY FOR A BIT OF READING ,
Answers
Answer:
I think It Is B
Explanation:
In performing the "STEP TEST" for 3 minutes, what was your score ?
Answers
Answer:
78
Explanation:
That's my score when I did a 3-minute Step test
What is the ionosphere and how does it form?
Answers
Answer:
ionosphere is the ionized part of Earth's upper atmosphere, it grows and shrinks depending on the energy it absorbs from the Sun.
Explanation:
8. the answer is not A , please help
Answers
Answer: I aint ever see two pretty grandmas but always one of them got to grab you're face haha jk try c.
Explanation: like I said try c
Need help filling out this chart about Energy, it should be pretty easy
Answers
Earths heat:yes,no,no,no,yes
Water flowing:yes,no,maybe,yes,yes,yes
Wind:no,yes,yes,no,no
Solar:no,no,yes,no,yes
Answer:
yes no yes no yes no......
Write an explanation to a 5-year-old child how rain is formed referring to the water cycle. Use terminology appropriate for this age group.
Answers
Answer:
The water from the ground rises to the sky and makes clouds. When the clouds become dark then rain or snow fall to the ground.
Water droplets make up clouds. These water droplets fall to Earth as rain when they get too heavy to remain suspended in the cloud.
Why does Earth produce rain?Droplets of water make up clouds. Water droplets become larger when they condense onto one another within a cloud. Raindrops descend to Earth when these water droplets become too heavy to remain suspended in the cloud.
Why is rain significant to Earth?The water cycle on Earth, which is essential to all life, includes both rain and snow as important components. The principal method that water from the heavens falls to Earth is through rainfall, which also replenishes underground aquifers and hydrates plants and animals as well as fills our lakes and rivers.
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why are phase changes intensive properties?
Answers
Answer:
Intensive properties, such as density and color, do not depend on the amount of matter. Both extensive and intensive properties are physical properties, which means they can be measured without changing the substance's chemical identity.
Explanation:
NEED HELP ASAP
What is the slope of the line passing Which formula contains a metal and a nonmetal?
MgO
SO2
CO
H2O
Answers
Answer:
What line you put no picture or anything so im guessing your trying to say...
Explanation:
SO2
If heat or energy is absorbed during a chemical reaction, then the reaction is considered:
endothermic
synthesis
combustion
exothermic
Answers
If heat or energy is absorbed during a chemical reaction, then the reaction is considered as an endothermic reaction. The enthalpy change of an endothermic reaction is positive.
What is an endothermic reaction ?The reaction in which heat energy is absorbed by the reactants is called an endothermic reaction. The enthalpy change in an endothermic reaction is positive.
The reaction in which heat is evolved from the system to the surroundings is called an exothermic reaction in which the enthalpy change is negative.
By absorbing heat energy, reactants becomes energetic enough to overcome the barrier potential of the reaction. Therefore, the potential energy diagram of an endothermic reaction will show less energy for reactants than that of products.
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Please do this! It is due today!
7th Grade Chemistry
Answers
Answer:
1. electron
2. proton
3. nucleus
4.neutron
5. Energy level
Explanation:
I don't know what you are asking in the second picture.
Answer:
electron
proton
nucleus
neutron
Energy level
Explanation:
I DONT KNOW WHAT THE SECOND PIC. MEANS
Which process turns sediment into sedimentary rock?
melting and cooling
compaction and cementation of sediment
weathering and erosion
plants or animals becoming trapped between layers of sediment
Answers
Answer: compaction, and cementation.
Explanation:
Answer:
the send one
Explanation:
i learned this
[NEW''' HOW FAST CAN YOU ANSWER
Answers
Answer:
100.0869 grams
mark brainliest
Answer:
What thy said
Explanation:
Which scenario best describes motion?
A. a toy train in position 4 on a number line
B. a race track that is 100 meters long
C. a ball rolling from point A to point B
D.a student living 150 miles from Chicago
Answers
The scenario which best describes motion is a ball rolling from point A to point B as it is moving.
What is motion?Motion is defined as a phenomenon which is described with respect to change in object's position with respect to time.It is given in terms of displacement,velocity,distance ,acceleration,speed.
Branch of physics which deals with motion of objects without any reference to it's cause is called kinematics while the branch which studies forces and their effects on motion is called as dynamics.
Motion applies to various systems like objects,bodies, matter particles ,radiation ,curvature.There are three laws of motion which are proposed by Newton.Classical mechanics is based on Newton's law of motion.Relativistic mechanics is based on modern kinematics.
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9. the answer is not 100.0(ect.), plese help me
Answers
ATOMS , help me solve this , and thx for your help
Answers
Answer:
8?
im not sure
Explanation:
What is cellular respiration and why do our cells use it?
Answers
Answer:
la respiración celular supone un proceso metabólico mediante el cual las células reducen el oxígeno y producen energía y agua. ... Estas reacciones son indispensables para la nutrición celular. La liberación de energía se desarrolla de manera controlada.
Explanation:
Answer:
to produce i think
Explanation:
Two seventh grade students are studying how sound waves are transferring energy. They hold a large pot near the side of a cup of water and bang the pot with a wooden spoon. What is the medium for the sound waves to get to the students' ears?
Question 1 options:
A) Glass of water
B) Air
C) Large pot
D) Spoon
Answers
Answer:
air is the medium through which the energy travels.
Explanation:
The disturbance moves away from the source through a medium to our ears.
In an experiment, a male and female rabbit were bred to see the color outcomes of the offspring. The male had black fur and the female had white fur. Five of their offspring were black and two were white. Which description best explains why the rabbits would be different colors?
A. Male traits are stronger than female traits.
B. The offspring show traits from both parents.
C. Traits like fur color are controlled by the environment.
D. Black fur are male offspring, white fur are female offspring.
Answers
Answer:
I beleive it is A
Explanation:
we can infer that the male traits are homogenous dominants
BB for black and the females genes are heterogenous dominant or homogenous recessive. Ww or
so B B
W WB WB
w. Bw Bw so here we can see it has a higher chance of offspring of being black
Use complete sentences to differentiate between acids and bases on the basis of touch. Give an example of each type.
Answers
Answer:
There are several theories to explain the difference between an acid and a base. One of the most complete theories is Lewis's theory, because it encompasses several compounds that other theories do not include. According to Lewis's theory, an acid is a substance capable of accepting a pair of electrons. And Lewis bases are substances that have the ability to donate a pair of electrons.
An example of an Lewis acid-base reaction is ammonia and boron trifluoride:
BF3 (is the acid) + NH3 (is the base) → H3N - BF3
Some differences of acids and bases to the touch are:
• Acids are sour in taste while Bases are bitter in taste. This is due to the pH that indicates acidity or basicity, and is defined as the hydrogen potential of a solution. The pH indicates the concentration of hydrogen ions in a substance. Substances with pH less than 7 are considered acidic, while substances with a pH greater than 7 are considered as bases (alkaline).
• Acids are highly corrosive, and can cause chemical burns to the skin, or respiratory damage when inhaling their gases. An example is sulfuric acid (H2SO4), which can corrode steel. The bases instead have a feeling of soap or slippery to the touch.
• Acids react with metals to produce compound and hydrogen gas while bases do not react with metals. For example, copper is attacked by nitric acid by reaction:
Cu(s) + 4HNO3(aq) ⇒ Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l)
• Acids turn blue litmus paper into red whereas in case of Bases they turn red litmus paper into blue.
• The bases are irritating to the skin, as they dissolve the skin fat, and can destroy organic matter by its caustic effect. An example is Sodium Hydroxide (NaOH)
• Acid and bases are good conductors of electricity in aqueous solutions.
Explanation:
HOPE THIS HELPS
Answer:
Acids can burn your skin when touched because acids are highly corrosive, whereas bases are slimy and have a slippery feel. An example of an acid is citric acid, which can be used as a disinfectant or in foods and candies as a flavor enhancer. Bleach is an example of a base and is used for cleaning and has whitening properties.
Explanation:
thought i'd give a shorter version, i might be wrong tho
