it's 1727 +822 just kidding
Explain the benefits of understanding sound waves properties in real life.
Answer:
The vibrations from sound waves cause our ears to send signals to our brains to create sound. The speed of sound waves will determine the sound's pitch, or how high or low something sounds. Sound waves are important because they allow us to hear important messages and emergency signals to protect ourselves.
Explanation:
I hope this helps :)
2. a) A student obtained ice at 0°C from a refrigerator and placed it in a beaker on a
bench. After 4 minutes, the temperature rose to 4°C. State the changes that would be observed in the water in terms of;
(i) volume
(ii) mass
(iii) density
(b) Sketch a graph of density against temperature if the ice is warmed from 0°C to
8°C.
Answer:
2 4
Explanation:
because
please help me guys please please please please please please please please please please please please please
Answer:
1.F = 256 N
2.a = 8 m/s/s
By looking at the given information, you know force, and an acceleration. Therefore you have enough information to use the first formula.
F = ma
256 N = m * 8 m/s/s
m = 256 N/8 m/s/s
m = 32 Kg
How would you explain to a 5 year old how to make their hands move to show each type of plate boundary with their hands. Convergent (2 ways to move your hands, to make mountains /to show subduction). Divergent (1 way to move your hands). Transform (1 way to move your hands)? Gosh, my teacher needs 3 paragraphs.
Answer:
Theirs plenty of ways to move you´re hands. You can make you´re hands wave like the ocean and as well make them move together to create a sound which is called clapping.
You can move your hands by poking your fingers together or you can hide your face by putting your hands on your face. You can also play peek a boo while you hide your face by taking you´re hands off you´re face.
Their is many ways to move your hands, They have big words for it too. The big words would be Convergent, Divergent and Transform.
That´s the many ways to move the hands.
Explanation:
GIMME BRAINLIEST PLZ I TOOK TIME ON THAT I HOPE ITS CORRECT. :))
Plz help in this question.
Answer:
The area of the liquid surface does not affect the pressure.
Why is visible light safe to humans ?
Explanation:
Visible light is the range of electromagnetic waves that humans can see. Anything that glows or gives off light makes waves of what we call visible light. The sun, light bulbs, candles and fire are all things that people automatically think of when it comes to light, but visible light comes from many sources and in many colors. Some other sources of visible light include: television and computer screens, glow sticks, and fireworks
Answer:
Visible light is visible because most of the gases in planetary atmospheres (oxygen, nitrogen, carbon dioxide, methane, ammonia…) are transparent to those wavelengths. We evolved to see those wavelengths because the atmosphere in visible light is transparent.
Explanation:
You volunteer to travel to a newly discovered planet about 30 light years from earth. At what speed do you need to travel to reach the planet in 6 years?
a chef is testing out a new iron cookware. He knows that iron specific heat of 445 j/kg Celsius. he heats a 2kg iron pan on a stove for 5 minutes and finds that the temperature of the iron skillet has increased by 150 degrees Celsius. calculate the amount of heat energy absorbed by the pan.
Answer:
[tex]\boxed {\boxed {\sf 133,500 \ Joules}}[/tex]
Explanation:
Since we are given the specific heat, mass, and change in temperature, we should use this formula for heat energy.
[tex]q=mc \Delta T[/tex]
The mass is 2 kilograms. Iron's specific heat is 445 Joules per kilogram degree Celsius. The temperature increases by 150 degrees Celsius.
[tex]m= 2 \ kg \\c= 445 \ J/kg \textdegree C\\\Delta T= 150 \textdegree C[/tex]
Substitute the values into the formula.
[tex]q= (2 \ kg)( 445 \ J/kg \textdegree C)(150 \textdegree C)[/tex]
Multiply the first two numbers. The kilograms will cancel.
[tex]q= 890 \ J/\textdegree C (150 \textdegree C)[/tex]
Multiply again. This time the degrees Celsius cancel.
[tex]q= 133, 500 \ J[/tex]
The pan absorbs 133,500 Joules of heat energy.
what are the different benefit of walking?
Answer:
U can walk to the bathroom
Explanation:
Anita rides a bicycle to market 60km from her house in 3.5 hours. What is Anita’s
speed?
A saw becomes warm when it is used to cut a log of wood.Give reason
Explanation:
a part of the kinetic energy of the sun is converted into heat as it cuts the log of wood it is due to this heat that becomes worm .Thus, kinetic energy of such changes into heat
Rank the items from slowest to faster
Answer:since time goes to the right you look at the lines that are most pointed to the right with less distance so that would be B, A, D, C
Explanation:
help me pls i really need it...
Answer:
directly proportional
Explanation:
.........,.............
why are gases less dense than solids
Answer:
Molecules are more spread apart in gasses than in solids.
Explanation:
In gasses, molecules are free to move around in their given space, allowing them to spread more.
Gases are less dense than solids because their volume is comparatively more than solids.
If you are startled by a sudden loud noise, your (____)
activated.
nervous system is
A. autonomic
B. parasympathetic
C. somatic
D. sympathetic
Answer:
D. sympathetic
Explanation:
The type of energy that a moving object has that increases when the speed of that object increases and is called ____.
Answer:
no
Explanation:
Answer:
The answer is Kinetic Energy.
Explanation:
Kinetic energy basically means energy of mass that's in motion.
The diagram below shows a wave. The feature of the wave are labeled A, B, C, and D. Which label identifies the wavelength?
According to the given diagram, the c identifies the wavelength of the curve. Hence, option C is correct.
What is wavelength?In order to characterize waveform signals that are transmitted across wires or into space, the term "wavelength" is used to refer to the separation between two identical positions (adjacent crests) in succeeding cycles. Typically, this length in wireless systems is measured in meters (m), centimeters (cm), or millimeters (mm) (mm). When describing the wavelength of infrared (IR), visible light (UV), and gamma radiation, units of 10-9 nanometers (nm) or angstroms (10-10 m) are more usually used.
The relationship between frequency and wavelength is inverse, with frequency being the number of wave cycles per second. A signal's wavelength shortens as its frequency rises, or we may say that the relationship between wavelength and refractive index is inverse.
To get more information about wavelength :
https://brainly.com/question/13533093
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Leigh Ann is learning about the differences between inherited traits and learned behaviors in organisms. For example, she knows that being able to read is learned while having straight or curly hair is inherited. How does a person inherit a trait such as hair texture?
A. Through the storage of extra fat during birth
B. Through DNA that is passed from parents to offspring
C. Through the breakdown of different proteins during birth
D. Through different viruses that are passed from parents to offspring
Answer:it the letter b I was just finished with this test
Explanation:
A balloon of hydrogen is put into to pressure chamber. The initial pressure and volume of hydrogen is 1 atm and .5 cm3. The pressure of the chamber is increased to 2 atm. What is the new volume? Use the formula for Boyle's Law: P1V1 = P2V2
Answer:
2.5 cm³
Explanation:
Use Boyle's Law
1×5=2×V
5=2V
V=5/2=2.5 cm³
Weight is best described as
A) an object’s resistance to acceleration.
B) what causes an object to fall.
C) the downward force exerted on objects due to gravity.
D) a force solely dependent on an object’s mass.
Answer:
d
Explanation:
Answer:
d
Explanation
a force solely dependent on the object’s mass
Rewrite the following sentences choosing the right words given between the
| How many/much) (tiverivera) (ts/are) there in Lebanon?
How many/muen) (people/population) (live/lives) in the South
Answer:
How muen population lives in the South
Answer:
How many people live in the South
I'm not sure about the first one sorry
what are some activities you can do on a regular basis? Physical education
activities you can do on a regular basis for physical education?
If so
WalkingGardeningDancingBicyclingSwimmingYogavalue of x
Guys plz answer
and get marked as brainliest :)
Answer:
80⁰
Explanation:
triangle AOB = 180
So, a = 50
triangle CAB = a+a+x=180
CAB = 50+50+X=180
CAB = X = 180-100
X=80
HOPE IT HELPS
Answer:
Explanation:
Since OA = OB (Radius of a circle)
angle OAB = angle OBA = 50
I'm not sure what to do beyond this...
I hope this piece of information was helpful.
In music, the note G above middle C has a frequency of about 392 hertz. If the speed of sound in the air is 340 m/s, what is the approximate wavelength of this note?(1 point)
1.2 meters
8.7 meters
0.87 meters
0.0026 meters
Answer:
0.87 meters
Explanation:
A block of lead has dimensions of 4.50 cm by 5.20 cm by 6.00 cm. The block weighs 1587 g. From this information, calculate the density of lead.
Answer:
11.3 g/cm^3
Explanation:
density = mass/volume
volume of rectangular prism = length * width * height
volume = (4.50 cm)(5.20 cm)(6.00 cm) = 140.4 cm^3
mass = 1587 g
density = (1587 g)/(140.4 cm^3)
density = 11.3 g/cm^3
If you were in charge of designing a wire to carry electricity across your city, state or province, which of
the following properties would be most important for your wire to have?
Should it be thick or thin, aluminum or nichrome, buried underground or installed out in the sun
Pleaseeee I need this done I beg Ill give brainiest and make sure its at least on paragraph if not then at least as many sentences as you can please
Answer:
Thin, aluminium and buried underground.
Explanation:
When it comes to electrification of a state or province, some characteristics of the wire to use must be considered. This would help to minimize and avoid power loss and wire burns.
i. The wire to use should be thin, and a quite number can be twisted one against the other so as to increase the surface area for heat dissipation.
ii. Aluminium wire is more preferable for this project. It has a high melting point, and reduces energy loss.
iii. Burying the wire underground through an insulator is the best choice, though expensive but would preserve the wire from external influence.
Eiman connects eight 12Ω lamps in series. What is
the total resistance of the circuit?
please help
Answer:
Total resistance is 96 ohm
Explanation:
Rs = R1 +R2 + R3 + R4 + R5 +R6 + R7 + R8
where R1 is lamp 1
R2 is lamp 2 n so on
Rs = 12 + 12 +12 + 12 +12 + 12 + 12 + 12( as each lamp is of resistance 12)
Rs = 96 ohm
GOOD LUCK FOR THE FUTURE! :)
Can you freeze sound waves
Answer:
I believe it's not possible
Explanation:
there's really no way I currently know of that we can do that so I suppose no.
Which three characteristics describe the energy of a wave? (2 points)
a
Frequency, the crest, and the trough
b
Wavelength, amplitude, and frequency
c
Speed, amplitude, and medium
d
Frequency, wavelength, and medium
A protein-digesting enzyme when mixed with starch solution would
Answer:
It would produce fat..........