What evidence supports the law of conservation of energy?
Answer:
Light energy is absorbed by plants and converted to chemical energy.
Explanation:
what SD can friction do to moving objects
what laws of motion are demonstrated by a hammer pounding a nail into a board?
The hammer pounding a nail demonstrates Newton's First Law, as the hammer's horizontal motion stops due to the opposing force of the nail and board, and Newton's Third Law, with the nail applying an equal and opposite force to the hammer.
The phenomenon of a hammer pounding a nail into a board can be analyzed using Newton's laws of motion. Specifically, two of these laws are demonstrated:
Newton's First Law (also known as the law of inertia). This law suggests that if an object is in motion, it will not change its velocity unless a force acts upon it. For example, a hammer in motion strikes a nail and is brought to rest because the nail and board apply a force opposing the hammer's motion.
Newton's Third Law states that for every action, there is an equal and opposite reaction. Therefore, as the hammer applies a force to drive the nail into the board, the nail applies an equal and opposite force to the hammer, causing it to stop.
When a hammer hits a nail, the horizontal momentum of the hammer is reduced to zero as the nail stops the hammer—illustrating Newton's First Law. Simultaneously, the force with which the hammer strikes the nail and the nail’s force on the hammer (which is responsible for stopping the hammer) is an example of Newton's Third Law in action.
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two important influences of dissolving a solute in a solution are temperature and ______.
In a two planet system, does an increase in planet velocity result in a decreased period?
Answer:
d.
No, if velocity becomes too great, the planet can escape the Sun's gravitational pull.
Explanation:
It is correct on Edge 22
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When are tides highest? a. during the moon’s first quarter phase b. when the sun, Earth, and the moon are nearly in a line c. during the moon’s third quarter phase d. when the moon is at a right angle to the sun
Answer:
b. when the sun, Earth, and the moon are nearly in a line
Explanation:
Due to gravitational pull of sun and moon, the level of water in seas and oceans rises above its normal level. This is known as tides. Highest tides occur when the sun, the moon and the Earth align in a straight line i.e. during New moon and Full moon. This is because in this alignment, there is maximum effect of gravity. Tide occurrence during this phase are also referred as spring tides.
A very small red laser pointer is pointed on the wall across the room. When inspecting the reddish light on the wall, you notice that it is _______________ because it has been diffracted.
A) bent
B) brighter
C) spread out
D) bounced back
the answer is c) spread out
Which of the following statements about asteroids is true? A. The asteroids in our solar system are spread out uniformly and are not grouped in any particular orbit. B. The majority of the asteroids in our solar system are found in the space between Mars and Jupiter. C. The majority of the asteroids in our solar system are found in the space between Earth and Mars. D. The majority of the asteroids in our solar system are found in the space between Jupiter and Saturn.
Answer:
Option (B)
Explanation:
Asteroids are the rocky materials that are present abundantly in an orbit between the planet Mars and Jupiter. This is known as the asteroid belt, which is comprised of millions of asteroids that move around the sun. They are of various sizes ranging from a few meters to about hundreds of kilometers, which can cause mass extinction if strikes on the surface of the earth. They move at a speed of about 80,000 km/hr and during this motion, frequent collision takes place and they are considered to be the remnant of the early solar system.
Thus, the correct answer is option (B).
How can you separate a mixture of 10 grams of salt and 10 grams of sand?
We have that we use dissolving, filtration and distillation to separate sand from salt
Dissolving,Filtration DistillationSand can be separated adding water to the mixture upon dissolving we filter to get the salt solution out of the sand
Then we distill by boil salt solutions at vaporization temperature of water to get salt back the water and salt solution to get salt back
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Select ALL correct layers.
Identify the intrusions in the rock layers.
A) J
B) H
C) G
D) K
A 140
B 78
C 186
D 124
Which statement is correct?
Material B is the least dense.
Material C is the most dense.
Material A is denser than Material D.
Material D is denser than Material A.
The correct statement is Material D is denser than Material A.
What is density of a material
Density of a material represents the amount of mass contained within a specific volume of that substance. It is calculated by dividing the material's mass by its volume.
This fundamental property, denoted as ρ, varies based on the composition and structure of the substance. For instance, metals generally possess higher densities compared to gases or liquids.
Hence we can say that Material D is denser than Material A.
question
The speed of light in four different materials is shown below:
Material Speed of light in thousand miles per second
A 140
B 78
C 186
D 124
Which statement is correct?
Material B is the least dense.
Material C is the most dense.
Material A is denser than Material D.
Material D is denser than Material A. ((my answer))
IF there are 10.0 g of source and 8.0 g of oxygen, how many moles of sucrose are available for this reaction
And this one as well
The small shock you feel when you rub your shoes on carpet and touch something is called by
A conduction
B insulator
C induction
D current
Please need help
Newton's Three Laws - Complete the sentences.
Newton's FIRST Law of Motion
An object at ___ stays at ___ or an object that is ___ at a ___ in a straight ___ keeps moving at that ___ unless another ___ acts on it.
Newton's SECOND Law of Motion
The amount of ___ needed to make an object change its ___ depends on the ___ of the object and the ___ required.
Newton's THIRD Law of Motion
For every ____ (or force), there is a(n) ___ and ___ action (or force).
The FIRST law states that an object at rest stays at rest, or if it's moving it continues at a consistent speed and direction unless acted on by another force. The SECOND law implies that the force needed to change an object's motion depends on its mass and the required acceleration. The THIRD law states that every force (action) has an equal and opposite force (reaction).
Explanation:Newton's Laws of MotionNewton's FIRST Law of Motion
An object at rest stays at rest, or an object that is moving at a consistent speed in a straight line keeps moving at that speed unless another force acts on it.
Newton's SECOND Law of Motion
The amount of force needed to make an object change its motion depends on the mass of the object and the acceleration required.
Newton's THIRD Law of Motion
For every action (or force), there is a(n) equal and opposite reaction (or force).
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In the early 19th century Christian Doppler, an Austrian physicist, proposed a theory regarding the properties of a moving source of sound. This is now known as Doppler’s law or the Doppler effect. What does this law state? A) The loudness of a moving source of sound is independent of the observer. B) The frequency of a moving source of sound is independent of the observer. C) The loudness of a moving source of sound is greater as it approaches an observer. D) The frequency of a moving source of sound is greater as it approaches an observer.
Answer: D) The frequency of a moving source of sound is greater as it approaches an observer.
Explanation:
Doppler effect occurs when there is relative motion between source of sound and observer. The apparent frequency observed by observed is different from the actual frequency of the sound emitted from the source.
When the source and observer move closer, the apparent frequency is greater and when moving away, it is less than the actual frequency. Thus, the correct option is D.
The loudness is dependent on the amplitude of the sound which remains same.
Answer:
D!
Explanation:
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1. What is weather?
2. What are 3 important things that our atmosphere does that allows for life on Earth?
3. The local news mentions that we will have a warm front coming through NH this week. What might we experience for weather before, during and after this front passes?
4. Is it possible that humans and dinosaurs have drank the same water? Formulate an argument to this question using your knowledge of the water cycle.
Sort the processes based on the type of energy transfer they involve.??
Explanation:
Thermal energy is defined as the kinetic energy present within the particles of a substance.
A process in which energy is absorbed by the molecules of a substance is known as endothermic process. On the other hand, a process in which energy is released by the molecules of a substance is known as exothermic process.
Condensation : A process in which vapors change into liquid as bonds are formed and energy is released.
Freezing : A process in which liquid changes into solid as bonds are formed and energy is released.
Deposition : A process in which particles of a substance come closer to each other resulting in bond formation and release of energy.
Sublimation : A process in which solid state directly changes into gaseous state without undergoing liquid state is known as sublimation. In this process, bonds break and energy is absorbed by the solid particles.
Evaporation : A process in which liquid changes into gas as energy is absorbed leading to breakage bond.
Melting : A process in which solid changes into liquid as energy is absorbed leading to breakage bond.
Thus, we can conclude that given processes are sorted as follows.
Thermal energy added : Sublimation, evaporation, and melting.Thermal energy released : condensation, freezing and deposition.what is the speed of a wave that has a frequency of 8,500 Hz and a wavelength of 1.5 m?
The speed of a wave with a frequency of 8,500 Hz and a wavelength of 1.5 m is calculated as 12,750 m/s by multiplying the frequency and wavelength together.
Explanation:To calculate the speed of a wave, we can use the formula v = f × λ, where v is the speed of the wave, f is the frequency, and λ (lambda) is the wavelength. Given that the frequency, f, is 8,500 Hz and the wavelength, λ, is 1.5 m, you can plug these values into the equation to determine the wave's speed.
Speed of the wave v = 8,500 Hz × 1.5 m = 12,750 m/s
So, the speed of the wave with a frequency of 8,500 Hz and a wavelength of 1.5 m is 12,750 meters per second (m/s).
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could you create a way to exert a continuous push on the ball? How would the ball respond to this continuous push?
How much power is required to lift a 25 kg box to the top of a 4 meter flight of stairs in 3.5 seconds?
which statement best compares potential and kinetic energy
Answer:
Potential energy is the energy possessed by a body at rest while kinetic energy is the energy possessed by a body in motion.
Explanation:
Potential energy is the energy possessed by a body by virtue of its position while kinetic energy is the energy possessed by a body by virtue of its motion. Potential energy is the energy acting on a body at rest(not moving) while kinetic energy is the energy acting on moving object(motion).
Example of potential energy is the energy possessed by a parked car. The parked car is not moving i.e the car is in a state of rest
Example of kinetic energy is the energy possessed by an accelerating car. The car is in motion (moving).
HELP NEEDED FOR ASSIGNMENT PLZ HELP NOW Describe an environment in which the sound of a ringing cell phone could not be transmitted, and explain why the ringing wouldn't be heard. Justify your reasoning using complete sentences and key vocabulary.
Answer:
I did my best to research to help you
Explanation:
The answer would be in space because there is no matter and if there isn't matter the sound of a ringing cell phone could not be transmitted.
how could you make a sound wave sound louder
The loudness of a sound can be increased by increasing the amplitude of the sound wave. This can be achieved by adjusting the volume on a speaker or by using devices designed to amplify sound, like a vuvuzela. Also, sounds with higher amplitude and intensity, such as those from a loud car stereo, are naturally louder.
Explanation:The loudness or volume of a sound wave can be increased by increasing its amplitude. The amplitude of a sound wave determines how much energy it carries, which directly affects its loudness. An example of this is how a speaker produces louder sounds: as you increase the volume on a speaker, it causes the table or surface it is on to vibrate more vigorously. This is because the speaker is moving more air (higher amplitude), which translates to a louder sound.
Another example is using a vuvuzela. The size and construction of the vuvuzela are designed to amplify the sound produced by the person blowing into it, making it louder. The amplified sound has a higher amplitude and therefore a louder volume.
Finally, in a real-life scenario, consider two sounds: one from a passing car's stereo and the other from the person next to you. The sound from the car's stereo is amplified due to its higher intensity and amplitude, making it louder and causing it to dominate over the sound coming from the person next to you.
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A woman falls to the ground while wearing a parachute. The air resistance on the parachute is 500N. If the woman falls at a constant rate of 5 m/s, then the gravitational force on her is
12) Which is MOST LIKELY a solid at room temperature?
What determines the atomic number of an element? Question 2 options: A.protons
B.neutrons
C.electrons
The larger the push, the larger the change in velocity. This is an example of Newton's Second Law of Motion which states that the acceleration an object experiences is _____ .
Newton's Second Law of Motion which states that the acceleration an object experiences is directly proportional to the force applied to it
How much force is needed to lift a 25-kg mass?