Answer:
Coal produces more pollutants in the air.
Explanation:
Each other answer has the words 'more difficult' or 'not commonly used. I think this is right...I won't see my grade for a long time though.... very, truly sorry if it is wrong! :)
Which of the following best explains the relationship between molecules and atoms?
A
Atoms are molecules that have a charge.
B
Atoms have smaller parts, called molecules.
C
Molecules are made up of two or more atoms.
D
Molecules are atoms that have no mass.
We can think of electromagnetic waves as a kind of ongoing message being sent out by the universe. Humans are able to naturally access only a portion of this message.
What information from the passage best supports this statement?
a
Mankind has invented tools to harness the information contained within electromagnetic radiation.
b
Without light, we wouldn't be able to process the visible world.
c
The waves emitted by our physical world make it possible for us to communicate over vast distances.
d
The human eye is only sensitive to a portion of the electromagnetic spectrum.
Answer:
its a
Explanation:
Answer:
d
Explanation:
how is the preodictable arranged by atomic mass, coloms , and rows
answer:an arrangement of elements in columns, based on a set of properties that repeat from row to row
Explanation:
hope this helps love <3
Answer:
I dont get it
Explanation:
Answer all 5 questions, please
Jorge is sitting on a couch. Gravity exerts a downward force on him. Based on Newton's law of action-reaction, the other force acting on Jorge is the – *
A) downward force of the floor.
B) downward force of air pressure.
C) upward force of momentum.
D) upward force of the couch.
What type of wave is represented in the diagram?
Answer:
b
Explanation:
Which situation best explains the law of force and acceleration? *
A) Restraints keep passengers from falling out of a rollercoaster when it travels upside down.
B) A larger force will be required to accelerate a roller coaster with more people on it.
C) Riders must be a certain height so they can ride the rollercoaster.
D) A rollercoaster that goes up must also come down due to the force of gravity.
Answer:
The answer is B.
Explanation:
A student lists three temperature measurements: 200°F, 200°C, and 200 K. Of the three measurements, 200 K is the highest temperature. true or false
Answer:
pointa
Explanation:
Answer:
False
Explanation:
Given temperature values;
200°F , 200°C and 200K
To solve this problem, convert all the given values to the same unit.
Let us choose kelvin as our standard here;
°F → °C → K
200°F;
(°F − 32) × [tex]\frac{5}{9}[/tex] = °C
Insert the parameters;
(200 - 32) x [tex]\frac{5}{9}[/tex] = 93.3°C
So;
°K = 273 + °C = 273 + 93.3 = 366.3K
For 200°C;
°K = 273 + °C = 273 + 200 = 473K
The highest temperature is 200°C
A ball is rolled in a straight line on a smooth frictionless surface. According to Newton's law of inertia, the ball will –
A) continue to roll in a straight line and eventually slow to a stop.
B) continue to roll in a straight line and increase, then decrease in speed.
C) continue to roll in a straight line and gradually increase in speed.
D) continue to roll in a straight line and remain at a constant speed.
Answer:
A
Explanation:
The ground is frictionless, which means that the ball won' slow down, until it is out of kinetic energy.
According to Newtons' law of inertia, a body keeps in a state of rest or moving until and unless an external force acting on it. If it continues to moving then it moves in a straight line with a constant speed.
What is inertia?Inertia of a massive body is the tendency to continue in state at which it exists now (rest/moving) until an external force acts on it.
Newtons law of motion says the same that a body at rest tends to continue in rest and a body if moving tends to continue its moving. This is one of the basic law in three law of motion by Newton.
Law of inertia is called the first law of motion by Newton and the second law states the relationship between mass and acceleration and the third law states that every action is accompanied by an opposing reaction.
According to law of inertia for a body at moving continuous to move in a frictionless path in a constant speed. The consistency in speed can only be maintained if the path is frictionless.
Hence, option D is correct. The ball will roll in a straight line with continuous speed.
To know more about inertia, refer the link below:
https://brainly.com/question/1358512
#SPJ2
What color element symbol designates elements that are a gas at a given temperature?
can you answer all of the questions plz
why does gold sink and wood float when they have similar volumes? Include what is happening with the mass size and arrangement of atoms
explain density in your own words
gold sinks and wood floats because____
Answer:
Gold has a density higher than water so it sinks. Wood has a density lower than water so it floats.
Explanation:
Wood has less packed particles compared to gold. Gold had more packed molecules.
Answer:
Solids are not the only substances that have density. Water and air have density that changes too. Density plays a key role in determining whether objects will sink or float in fluids and gases. Gold sinks in water because gold is denser than water, and pine floats in water because pine is less dense than water.The particles in wood are not so closely packed. There is more space in between the particles and fibres, which gives wood its low density.
Thank you and please rate me as brainliest as it will help me to level up
What is the length of a "Jupiter day" in terms of Earth hours or days?
around 15 Earth hours
around 10 Earth hours
around 10 Earth days
around 15 Earth days
Answer:
Around 10 Earth hours
Explanation:
there is no explanation..
Which example describes an inherited trait that cannot be determined by observing an individual?
Calculate the ΔHrxn for the following
Fe2O3(s)+3CO→Fe(s)+3CO2(g)
Given:
4Fe(s)+3O2(g)→2Fe2O3(s)
ΔH = -1645.36
2CO2(g)→2CO(g)+O2(g)
ΔH = 567.66
Answer: alright now listen fe203(s)=567.66666
Explanation:
What is true about all forces?
A) They are unbalanced
B) They involve more than one object
C) They cause objects to move
D) They cancel each other out
(This is a question from BrainPop)
Answer:
I'm pretty sure it is C.
Explanation:
Please correct me if I'm wrong! :)
Answer:
They involve more than one object.
Explanation:
Atomic symbols cannot be used to communicate...
A.the size of an atom.
B.the charge of an atom.
C.the number of neutrons.
D.the number of protons
How might a biologist use a distance-time graph or a speed-time time graph?
Answer:
he line on a distance-time graph shows how an object's position changes during each time interval. From this, you can figure out an object's speed
Explanation:
Coefficient -
Subscript for K-
3) 4K CO
Subscript for C
Subscript for 0 -
Explanation:
....... ¿Qué?
Answer:
Explanation:
THERE IS ONE OF EACH
The risk of injury in a car accident is much greater if occupants do not wear a seat belt. Which of Newton's laws explains why this is true? *
A) Law of inertia
B) Law of force and acceleration
C) Law of action-reaction
D) Law of gravity
Answer:
A: Law of inertia
Explanation:
Describe the direction in which each object will accelerate. If the object won’t accelerate, write “no acceleration.” Explain what might be happening to each object in terms of its overall motion.
Answer: no acceleration.
Explanation: More resistance then downward force
When a pot of water is boiling on the stove it has increased....?
1) Potential Energy
2) Elastic Energy
3) Thermal Energy
4) Kinetic Energy
Answer:
The correct answer would be "3) Thermal Energy"
Explanation:
The thermal energy comes from heat and goes back out as condensation.
-Annie
8) Which of the following is correct for 5mol/ dm3 of any substance?
a) 5 moles of substance dissolved in 5 cm3 of its solution.
b) 5 moles of substance dissolved in 1 dm3 of its solution.
c) 5 moles of substance dissolved in 100 cm3 of its solution.
d) 1 moles of substance dissolved in 1000 cm3 of its solution.
please answer asap
Answer:
b
Explanation:
Answer:
B
Explanation:
Calculate the ΔHrxn for the following
2NOCl(g)→N2(g)+O2(g)+Cl2(g)
Given:
12N2(g)+12O2(g)→NO(g)
ΔH = 89.32
NO(g)+12Cl2→NOCl(g)
ΔH = -30.39
Answer:
2 NO (g) → N2 (g) + O2 (g)
2 NOCl (g) → 2 NO (g) + Cl2 (g)
____________________________
2NOCl (g) ⟶ N2 (g) + O2 (g) + Cl2 (g)
ΔH = [90.3 kJ x 2 x -1] + [-38.6 kJ x -1 x 2] = -103.4 kJ
The ΔH for the reaction is -103.4 kJ
PLEASE HELP
I will mark brainliest
A boat with a jet engine demonstrates Newton's law of action-reaction. Why is this true?
A) As the boat expels exhaust forward, the boat moves forward.
B) As the boat expels exhaust backward and forward, the boat remains stationary.
C) As the boat expels exhaust forward, the boat remains stationary.
D) As the boat expels exhaust backward, the boat moves forward.
Answer:
C) As the boat expels exhaust forward, the boat remains stationary.
Explanation:
Answer:
c
Explanation:
Describe the direction in which each object will accelerate. If the object won’t accelerate, write “no acceleration.” Explain what might be happening to each object in terms of its overall motion.
Answer:
If the object won't accelerate, write “no acceleration.” Explain what might be happening to each object in terms of its overall motion.
Explanation:
A storm is
a. “dome” of water that sweeps across the coast where a hurricane lands.
_ b. Huge body of air that has similar temperature, humidity, and air pressure at any given height.
c. Boundary where air masses meet and cold air rises above warm air.
d. Violent disturbance in the atmosphere
BRAINLIEST BRAINLIEST BRAINLIEST
Answer:
c. Boundary where air masses meet and cold air rises above warm air.
Explanation:
Which is produced in a synthesis reaction?
A. a single element
B. a single compound
C. a single ion
D. a single atom
Answer: a single compound
Explanation: I know it
A little boy is being pushed in a wagon by his mother. Suddenly, the little boy's mother stops to watch for cars before she crosses the street. The little boy's body continues to move forward in the stopped wagon until he tumbles out. The forward movement of the boy's body shows – *
A) Newton's law of gravity.
B) Newton's law of inertia.
C) Newton's law of force and acceleration.
D) Newton's law of action-reaction.
Answer:
the answer would be C
i took this from a quizlet
hopes this helps<3