Yes. A tree falling over in a forest makes a sound even there is no receptor (human or animal ear) to hear it.
What is sound?In terms of physics, sound is a vibration that travels through a transmission medium like a gas, liquid, or solid as an acoustic wave. Sound is the reception of these waves and the brain's perception of them in terms of human physiology and psychology. Only acoustic waves with frequencies between roughly 20 Hz and 20 kHz, or the audio frequency range, can cause a human to have an auditory sensation.
If sound is defined as air vibrations, then the falling tree most definitely creates sound because it causes air vibrations. A recorder with a microphone could undoubtedly capture those vibrations as sound even if no one or any other animal was around to hear it.
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Need help asap
Jarvis is going canoeing for the first time. His Dad told him about his scary adventure as a boy when his canoe tipped over. How can Jarvis avoid the same experience?
Keep his weight back while leaning into the turn
Remain seated when the canoe is in motion
Stow all supplies in the back of the canoe
Use two paddles to increase the speed of the canoe
Answer:
Hello friend~
Explanation:
I am thinking either its A or B!
But im going for A
While turning, it is common to tip over. this is why you should prob kepp your weight back.
Answer:
Remain seated when the canoe is in motion
Explanation:
If he moves a lot then it will tip over
What is the speed of light in a vacuum?
300,000 km/sec
100,000 km/sec
500,000 km/sec
250,000 km/sec
Answer:
The first one is the right answer.
Answer:
300,000 km/sec
Explanation: The first one.
Please help!!
Data just came in about the space pod's mission and the thrusters fired for exactly the same about of time and at the same force as they have in past missions. Nothing about the pod's thruster force was different. Based on this new evidence, neither of our previous claims could be true!
We are left with the same question: why didn't the pod dock like it was supposed to do?
What new theories do you have?
Answer:
: WHY DIDN'T THE POD DOCK LIKE IT WAS SUPPOSED TO DO?
ANSWER;
The force exerted by the thrusters caused the pod to change direction.
WHAT NEW THEORIES DO YOU HAVE?
ANSWER;
This pod moved differently because it was more massive.
CARRYONLEARNING:)
Plate Tectonics Lab Report The outcome variable (dependent variable): the outcome/dependant variable is Test variable (independent variable): the test/independent variable is
Answer:Test variable (independent variable): the land of the 6 locations
Outcome variable (dependent variable): the location
How many steps or minutes would it take to burn off 890 calories?
•Accordingto the graph, how many dark-colored moths existed in year 8?
Answer: Approximately 600
So your answer is C.
Explanation:
Study the image of the moving car.
A car that is driving at the flat bottom of the hill would have ______ potential energy and _______ kinetic energy.
- High
- Low
- Equal
Answer:
Low Potential energy and High Kinetic energy
Explanation:
Hope this helps and have a good day! Apologies if it's wrong.<3
Answer:
Low, high
Explanation:
The potential energy for the car would be low as it is on the flat bottom of the hill. Since it is still driving, it does have some kinetic energy. I'm assuming that it is currently moving at a constant velocity, so the kinetic energy would remain high (remember, the kinetic energy of an object is the energy that it possesses due to its motion).
Metals are malleable which means they can ______________ break easily conduct electricity be melted into a liquid form be hammered or pressed permanently out of shape without breaking or cracking
Answer:
melt?
Explanation:
shhh
Answer:
can be formed into other shapes, such as thin sheets or foils
Explanation:
A group of students is tasked with developing a checklist for determining whether a material undergoes a chemical or physical change. The students make a preliminary list of properties that they can test and classify each as either a chemical or physical property.
Chemical Property Physical Property
bubbles when treated with acid color
burns when placed in a candle flame odor
density hardness
boiling point mass
dissolves in water melting point
Several other students in the class claim that the checklist is incorrect.
What change should the group make to the checklist to correct their mistake?
Boiling point and density should be moved to the physical property side of the list, and color and odor should be moved to the chemical property side of the list.
Boiling point and density should be moved to the physical property side of the list, and hardness and mass should be moved to the chemical property side of the list.
Dissolves in water and boiling point should be moved to the physical property side of the list, and odor and mass should be moved to the chemical property side of the list.
Density and boiling point should be moved to the physical property side of the list.
please help
Answer:
that's alot better explain it
Which observation indicates a chemical property?
slowly dissolves
turns cloudy
turns black
gritty
Answer:
Turns black.
Explanation:
In a racquetball game, your opponent repeatedly hits the same type of serve off the front wall and it lands in approximately the same location each time. A good defensive strategy to return the serve would be:
(A)Begin in a different place on the court so your opponent serves there
(B) Begin moving in anticipation of where the ball will land
(C)Stay in ready position and move only when the ball lands
(D)Stay in ready position and wait to see if it bounces off a side wall
Answer:
b
Explanation:
A good defensive strategy to, return the serve would be to begin moving in anticipation of where the ball will land.
Option C is correct
What is defensive strategy?A defensive strategy is a marketing tactic used by management to protect their company against possible rivals.
Defensive strategy is also a tactic used in sports to prevent the opposition party from defeating you.
In conclusion, i'll suggest you start moving in anticipation of the ball's landing.
Read more about Motion
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Divers found two substances on the bottom of the ocean. At room temperature, both substances are liquid. Scientists then transferred the same amount of energy out of both substances. When a scientist checked again, Substance 1 had changed phase, but Substance 2 had not. How are Substances 1 and 2 different?
Answer:
Substance 2 is a still figure and substance 1 isn't
Explanation:
PLEASE HELP
Write a word problem involving potential energy using the following variables: Potential Energy = 16 J
Acceleration due to gravity on Earth = 9.8 m/s^2
Mass = 7 kg
Think about what information you are missing and what the problem could be asking you to solve. Make sure to include the solution to your problem. (Potential energy = 9.8 x mass x height)
--------------------------------------------------------------------------------------------------------------------------------
Write a word problem involving kinetic energy using the following variables: (Kinetic energy = 0.5 x mass x speed^2)
•Kinetic energy = 316 J
•Speed = 10 m/s
Think about what information you are missing and what the problem could be asking you to solve. Make sure to include the solution to your problem.
Explanation:
1st.
potential energy = 16 j
acceleration d t gravity = 9.8 m/s²
mass = 7 kg
we know
pe = m×g×h
16 = 7 × 9.8 × h
16 = 68.6h
16/68.6 = h
h = 2.16
2nd :
ke = 316 j
s = 10
we have
ke = 0.5×m×s²
316 = 0.5 × m × 10²
316 = 0.5 × m × 100
316 = 50m
316/50 = m
6.32 = m
m = 6.32 kg
may be check it once cuz I'm also not perfect at numericals too . I'm just 14 yo girl lol.
hope this helps :)
Which of these actions requires KINETIC Energy? Choose all of the correct answers.
- Sleeping
- Swimming
- Turning a doorknob
- Listening to music
- Hitting a tennis ball
- Waiting at a red light
Answer:
turning a doorknob
Explanation:
it will snap back once you release it.
Describe a situation where you can be traveling at a low speed but have an extremely high velocity
Answer:
Cruising at 35,000 feet in an airliner, straight toward the east,
at 500 miles per hour
Explanation:
Answer:
Explanation:
Traveling in a plane.
According to the graph, how many light-colored moths existed in year 2?
Mike created the following table for the layers of the Earth. What needs to be corrected?
The mantle is made of metal and the outer core is made of rock.
The outer core is liquid and the inner core is solid.
The crust is 2,900 km and the mantle averages 45 km.
The crust is semi-solid and the mantle is solid.
Answer:
The last option.
Explanation:
The crust is solid and the mantle is semi-solid, it's the wrong way around.
Draw a diagram that shows how Mark and Gina can model the positions of the Sun, Earth, and the Moon, and their orbital paths, during a solar eclipse. You must use all of the tools in your design: lamp, tennis ball, golf ball, and yarn.
Image result for Draw a diagram that shows how Mark and Gina can model the positions of the Sun, Earth, and the Moon, and their orbital paths, during a solar eclipse. You must use all of the tools in your design: lamp, tennis ball, golf ball, and yarn.
Place a lamp 25cm from the model. Move the Moon in front of Earth (right) to see the lunar umbral and penumbral shadow, simulating a solar eclipse. Move it behind Earth (left) to see Earth's umbral and penumbral shadow cast on the Moon, a lunar eclipse.
Which alignment of the sun Moon and Earth causes a lunar eclipse?Image result for Draw a diagram that shows how Mark and Gina can model the positions of the Sun, Earth, and the Moon, and their orbital paths, during a solar eclipse. You must use all of the tools in your design: lamp, tennis ball, golf ball, and yarn.
When the Moon passes between Sun and Earth, the lunar shadow is seen as a solar eclipse on Earth. When Earth passes directly between Sun and Moon, its shadow creates a lunar eclipse. Lunar eclipses can happen only when the Moon is opposite the Sun in the sky, a monthly occurrence we know as a full Moon.
Learn more about solar eclipse, refer
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Study the image of the moving car.
While traveling downhill, the car’s potential is ________ and kinetic energy is _______.
- Increasing
- Decreasing
- Staying the same
Answer:
While traveling downhill, the car’s potential is increasing and kinetic energy is decreasing
Explanation:
hope this helps!
Please answer this question fast
Answer:
a
Explanation:
they all have an equal number of pins, so the magnet won't tip back or forth (it will to the side though)
Compare an Earth year to a cosmic year. How many Earth years are in one cosmic year? What makes it that much longer?
no links
pls hurry its a exam!
Answer:
I think it would take 220, 230 million earth years to match a cosmic year.
what happens to suns energy while it travels to earth's atmosphere
A: Some of it is destroyed in Earth's atmosphere.
B: It is completely trapped by Earth's surface.
C: It is all reflected back into space.
D: Some of it reaches Earth's surface.
Answer:
D: Some of it reaches Earth's surface
Explanation:
Hope this helps and have a good day! Apologies if it's wrong. <3
In this light-colored forest, you started with 50% light moths and 50% dark moths. At the end of your simulation, was there a higher percentage of light or dark moths?
Answer:
light moths.
Explanation:because the forest is a light-colored forest.
if you dig a hole through the earth, from one hemisphere to the other, and drop a tennis ball into it, would it get stuck at the center, since thats where gravity's at, or would it pop up out the other side??
Answer:
Depending on which hemisphere it is, like western to eastern, It would most likely get stuck at the center. You would also have to put more things into thought like acceleration, velocity, and speed.
BUT since the question asked "would it pop out the other side?", I'm assuming it's talking about northern to southern hemisphere. so in that case it would pop out the other side since gravity makes things go downwards.
Answer:
We drop a tennis ball into the hole. The stone is pulled down towards the center of the earth. It falls all the way to the middle of the earth once it reaches the middle, theres no more pull of gravity. ... It would go up a ways, then (due to the pull of gravity) fall back in the other direction, back towards the center
ME Project- Decomposer
Decomposer: (breaks down dead matter)
17. The common name of my organism is:
Answer:
Explanation:
Decomposer.
A pumpkin with a mass of 2.5 kg was pushed toward a wall. The average acceleration of the pumpkin was 10.7 m/s2.
How much force was applied to the pumpkin to make it move?
A. 4.28 N
B. 4.28 m/s2
C. 26.75 m/s2
D. 26.75 N
Describe the transfer of energy that occurs when you drop a book on the floor. Please include all possible forms.
Answer: Potential energy into Kinetic energy and heat energy.
Explanation: As every object (book) at height possess potential energy when the book is dropped down its energy is converted to kinetic energy and some amount of it is also dissipated as heat energy due to friction of air.
I need help on question D And you will have to look at the answer from question C !
I need answer ASAP PLZ! First one to answer will get a brainliest!!
The answer to C is 10/1 or 10.
Explanation:
You're supposed to add 3/60 and 7/60 not subtract since she was speeding up not slowing down.
Answer:
Use the website Calculator soup I'm pretty sure you can plug in the numbers and get your answer!
Explanation:
If it does work could I get my first brainliest?
Study the following image of the moving car.
At the top of the hill, the car’s potential energy is ______ and kinetic energy is ______.
- High
- Low
- Equal
Producer: (plants) (produces its own food) 1. The common name of my organism is: ______________
2. This producer gets energy from sunlight which allows the plant to make _____________ which the cells use later for energy in cellular respiration at night.
Answer: 1. Plant
2. Glucose
Explanation: