You are planning an investigation that explores the properties of matter. Which of the following will help you discover a physical property?
Experiment: place a powder into a beaker that contains a liquid/Result: the beaker gets hotter
Experiment: place a powder into a beaker that contains a liquid/Result: the solid dissolves into the liquid
Experiment: place a powder into a beaker that contains a liquid/Result: the mixture begins to fizz and bubble
Experiment: place a powder into a beaker that contains a liquid/Result: the mixture catches fire and burns down the lab
Answer:
I will post your answer soon
Explanation:
If you are planning an investigation that explores the properties of matter, then experiment: place a powder into a beaker that contains a liquid Result : the beaker gets hotter will help you discover a physical property.
What is experiment ?An experiment is a technique used to confirm or deny a hypothesis, as well as assess the possibility or effectiveness of something that has never been done before. Experiments show what happens when a certain component is modified, which sheds light on cause-and-effect relationships. The purpose and scope of experiments vary widely, but they always rely on a repeatable process and a rational examination of the outcomes. Natural experimental experiments are also a thing.
While a child may conduct simple experiments to better understand how objects fall to the ground, scientific teams may spend years conducting thorough research to increase their understanding of a phenomenon.
This experiment shows enthalpy is positive, heat is absorbed in this experiment. this breaks the atoms and it needed the energy.
To know more about heat :
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#SPJ2.
A solar eclipse may occur when:
A. when the moon is 3rd quarter phase
B. when the moon is full
C. when the moon is at 1st quarter phase
D. when the moon is new
How can I skip class:
A: Fake sick.
B: Have a heating pad on my heat to have a fake fever.
C: Fake barf
D: Act fine until a test the neb sick
Answer:
c gl
Explanation:
::::::::::::::::::::::::
Someone plz help I’m on a time limit :(
What patterns occur in the Earth-Sun-Moon system that allow us to identify the cause of
eclipses?
Answer:
Earth's rotation and orbit and the Moon's orbit cause observable patterns (Day and night, seasons, phases of the Moon, tides).
All of the following are sources of calories except HELP ASAP!!!
Answer:
vitamins don't contain calories
A 1800 kg car moving south at 17.5 m/s collide with a 2800 kg car moving north. The cars stick together and move as a unit after the collision at a velocity of 5.22 m/s to the north. Find the velocity of the 2800 kg car before the collision
Answer:
v₀₂ = -2.67 m / s
Explanation:
Let's use the conservation of the moment, for this we define a system formed by the two cars.
Consider the north direction as positive and the subscript 1 will be used for car 1 and the subscript 2 for the second car
Initial instant. Before the crash
p₀ = -m₁ v₀₁ + m₂ v₀₂
Final moment. Right after the crash
p_f = (m₁ + m₂) v
p₀ = p_f
-m₁ [tex]v_{o1}[/tex] + m₂ v_{o2} = (m₁ + m2) v_{f}
v₀₂ = [tex]\frac{(m_1 +m_2) v }{m_2}[/tex]+ [tex]\frac{m_1 v_{o1} }{m_{1} }[/tex]
let's calculate
v₀₂ = [tex]\frac{(1800 +2800) 5.22 + 1800 (-17.5)}{2800}[/tex]
v₀₂ = -2.67 m / s
the negative sign indicates that the carriage moves in the opposite direction of the temperies
What type of boundary is shown in the diagram?
Answer:Divergent boundaries -- where new crust is generated as the plates pull away from each other.
Convergent boundaries -- where crust is destroyed as one plate dives under another.
Transform boundaries -- where crust is neither produced nor destroyed as the plates slide horizontally past each other.
Explanation:
please help me i neeed help with all threeas soon as possible thank you
Answer:
4b: comets
5a: supercluster
5b: they just changed 4b's solar system for milky way. I think it is still comets. if not, then just say black holes.
If a train is moving 10 m/s, how long would it take the train to go 2200 m
Answer:
220 seconds
Explanation:
What TWO things do all vectors have?
Answer:
Explanation:
orange jump suit n a fat belly
Which of these would have the highest temperature?
ice
water
water vapor
Answer:
Water vapor
Explanation:
Water Vapor has the highest temperature, due to its being in a gas state, and gases usually have very high temperatures, for example steam when you boil pasta.
Hope this helps you! Have a nice day!
help pls
Based on the pattern in the data, we can predict that the period of Mars’ orbit will be–
Answer:
greater than 365.2 days.
Explanation:
Can someone help me with these questions pls
- calculate the BMI for a person who is 5'1" and weighs 172 pounds. Before you
calculate the BMI you must convert the height into meters and the weight into kg. You can use
the internet to convert them.
A. 32.9
B. .03
C. 184.86
THIS IS FOR PE PLEASE HELP JTS FOR EXTRA CREDIT
Answer:
It is 32.9
Explanation:
ILL GIVE BRAINLY AND THIS IS 15 POINTS PLZZZ HELPPPPPP
The best thermal insulators _____________________.
have free electrons.
are metals.
conduct heat well.
are gases.
Answer:
have free electrons
Explanation:
they are loosely bound and free to move through the material
PLEASE HELP!
Imagine a simple circuit with a battery supplying a single resistor. If a second resistor was added to the circuit wired in series with the first, the current going through the first resistor would:
A) decrease
B) it would depend on whether the second resistor had a higher or lower resistance
C) stay the same
D) increase
Answer:
ummm stream txt blue hour
Explanation:
Answer:b
Explanation: this would be the closet answer
The outside diameter of your teacher's rear bicycle tire is 16 inches. How far will he travel if the rear wheel makes 1200 revolutions on the road?
Answer:
241,274.32 inches
Explanation:
How far will he travel if the rear wheel makes 1200 revolutions on the road?
Since the rear wheel makes one revolution in the distance of a circumference of a circle, C with diameter, d = 16 inches
C = πd²/4
So, the distance, travelled in 1200 revolutions is D = 1200 × C = 1200πd²/4
Substituting d = 16 into D, we have
D = 1200πd²/4
D = 1200π(16)²/4
D = 76800π
D = 241,274.32 inches
5. What do you think? At a baseball game, when you are far from the batter, you might see the batter hit the ball before you hear the sound of the hit. Why do you think this
happens?
Answer:
The speed of sound in air is lower compared to in solids and liquids.
Explanation:
Sound is a wave that can be generated by a vibrating body. Its speed through different media differs due to the nature of the media.
Since the molecules of solids are closely packed, sound can be easily transferred from one molecule to another at a faster rate. Thus, the high speed of sound in solids.
In liquids, the molecules are not as closely packed as solids. So that the speed of sound though liquids is lower compared to that of solids. Gases has its molecules farther apart, thus making the speed of sound through it the lowest compared to solids and liquids.
Therefore the sound of the batter hitting the ball is heard latter, due to its lower speed through the air.
A pizza delivery person drives 3 miles North then 5 miles West and then 3 miles South to deliver a pizza. What is the person's displacement?
A. 45 miles
B. 8 miles
C. 11 miles
D. 5 miles west
Answer:11
Explanation:
Just did it
Answer: it’s 11
Explanation:
I just did the question
A person on a daily diet of 2,500 calories should get no_more than
calories from fat each day.
Answer:
35%
Explanation:
Answer:
its 83
Explanation:
Help
Question 6: Which of these is Not a unit of density?
Answer:
SI
Explanation:
In which general compass traction is this hurricane moving
Answer:
It looks like its moving north.
Explanation:
1.Coral reefs are endangered by?
a. Climate change b. pollution C. overfishing d. all of the above
Answer:
I'm going to go out on a limb and say D. All of the above
Explanation:
Resistor 1 has a resistance of 10 N and
carries a current of 3 A. Resistor 2 has a resistance of
5 and carries a current of 10 A. Which resistor has
the greater potential difference?
Answer:
Resistance 2.
Explanation:
Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.
Mathematically, Ohm's law is given by the formula;
[tex] V = IR[/tex]
Where;
V represents voltage measured in voltage. I represents current measured in amperes. R represents resistance measured in ohms.Note: Voltage is the same as potential difference.
Given the following data;
Resistance 1 = 10 Ohms
Current 1 = 3 Amperes
Potential difference 1 = current * resistance
Potential difference 1 = 3 * 10
Potential difference 1 = 30 V
To find the potential difference in 2;
Resistance 2 = 5 Ohms
Current 2 = 10 Amperes
Potential difference 2 = 10 * 5
Potential difference 2 = 50 V
Therefore, Resistance 2 has greater potential difference.
Is potential energy higher at the equilibrium position?
2.
______ is stored energy due to its position.
Answer:
Potential energy
u welcome lol
Waves are observed passing under a dock. Wave crests are 8.0 meters apart. The time for a complete wave to pass by is 4.0 seconds. The markings on the post submerged in water indicate that the water level fluctuates from a trough at 6.0 meters to a crest at 9.0 meters. Calculate the velocity of the wave.
Answer:
2 m/s
Explanation:
The crest of the wave moves 8 meters in 4 seconds, so its speed is ...
(8 m)/(4 s) = 2 m/s
Answer:
2 m/s is the answer .
Explanation:
#CarryOnLearningA sample of hydrogen at 1.5 atm had its pressure decreased to 0.50 atm producing a new volume of 750 mL. What was its original volume?
245 ml
345 ml
123 ml
250.mL
Answer:
245 ml
Explanation:
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The original volume of the sample of hydrogen is 250 mL. The correct option is the fourth option 250mL
From the question,
We are to determine the original volume of the hydrogen.
To do this,
We will use the Boyle's law formula
Boyle's law states that "the volume of a fixed mass of gas is inversely proportional to its pressure, provided that the temperature remains constant."
From Boyle's law we have that
P₁V₁ = P₂V₂
Where P₁ is the initial pressure
V₁ in the initial volume
P₂ is the final pressure
and V₂ is the final volume
From the question,
P₁ = 1.5 atm
P₂ = 0.50 atm
V₂ = 750 mL
Put the above parameters into the Boyle's law equation
P₁V₁ = P₂V₂
Then, we get
1.5 × V₁ = 0.50 × 750
1.5 × V₁ = 375
∴ V₁ = 375 ÷ 1.5
V₁ = 250 mL
Hence, the original volume of the sample of hydrogen is 250 mL. The correct option is the fourth option 250mL
Learn more here: https://brainly.com/question/12717895
How long does it take a train accelerating from 25.4 m/s to 81.2 m/s to cover 2130 m?
A. 40.0 s
B. 76.3 s
C. 20.0 s
D. 38.2 s
Answer:
C: 20.0s
Explanation:
A force that tries to slow things That are moving through air
Answer:
A force that tries to slow things down that are moving through air. It is a type of friction. Air resistance and water resistance are both sometimes called drag.