Answer:
4. A. rope climb
5. True
6. True
Explanation:
hope it's help
Which of the following is true?
The shorter the wavelength + the higher the frequency= the higher the energy
The longer the wavelength + the lower the frequency= the lower the energy
Both A and B are correct.
pls help me to answer this
Answers:
TrueTrueTrueTrueTrueTrueTrueFalseTrueTrueWeirdly it seems like each answer choice, except problem 8, is "true".
========================================================
Explanations:
Think of a pebble dropping into a water to cause a ripple. The energy going outward in all directions requires the water as the medium for that energy wave to travel. Each particle bumps into another to transfer the energy.This is fairly self explanatory that I'm not sure what to write as an explanation here. Longitudinal waves are ones where they act like a slinky. A blast of energy causes compression and that compression leads to expansion later on (followed by further cycles of compression+expansion). This chain reaction causes a domino effect so the sound wave reaches the target to be absorbed or reflected.This is true because light is much faster than sound. This is why fiberoptic cables are used to transmit voices on a telephone line rather than use the sound of the voices themselves to transmit. It's also why, during a thunderstorm, a flash of light strikes first before the rumbling sound of thunder follows a few seconds after.This is true and it shouldn't take too much convincing to see how "electromagnetic" breaks up into "electrical" and "magnetic". These types of waves can travel through the empty vacuum of space without needing a medium like mechanical waves do. This is why energy of the sun can reach us. Visible light is part of the spectrum along with stuff like x-rays, gamma rays, microwaves, and radio waves.There's not much to say here. Shadows are the absence of light.This is true because a beam of light bounces off an object, and reflects into our eyes so we can see the object. Unlike every other answer choice, this answer is false. Doctors don't use microwaves to get pictures of teeth and bones. Instead they use x-rays.This is true. Refer to the ROYGBIV color scale for more info.This seems a bit vague. Does your teacher mean visible light? If so, then yes our eyes can detect it. Otherwise for things like x-rays we cannot detect these wavelengths. I'll assume visible light for now.When conducting scientific research, appropriate methods must be used to find information that is reliable and valid. Angela was assigned a research project about human body systems for her anatomy course. She would like to focus on the immune system, and more specifically, the effects of HIV on the immune system. Which of the following options would be the best way for her to conduct an online search about her topic? a. Type in "human body systems" HIV b. Type in "immune system" human c. Type in "HIV immune system" d. Type in "human immune system" HIV effects.
Answer:
Letter C. type in "human immune system" HIV effects
Explanation:
because she was focusing on the immune system and the effects of HIV in the human body system project
Answer:
its d
Explanation:
2. Which of the following is not an effect of tides?
A. Fishermen use tides to maximize fishing and time fishing trips.
B. Energy from the moving water can be used in hydroelectric dams.
C. Tides can be used to predict weather events.
D. Tides help keep the oceans clean and provide animals with nutrients.
Answer:
D. Tides help keep the oceans clean and provide animals with nutrients.
Explanation:
A. I have gone fishing and used tides to maximize time in my trips
B. Tides are incoming water, so yes, dams can use them to create power
C. Tides can be plugged into the water cycle and used to predict weather events
D. If tides kept the ocean clean, why is it still dirty? Animals don't rely on tides to get nutrients
Calculate the kinetic energy of a 4 kg object moving at 10 m/s.
Answer:
1/2 * 10 kg) * 5 m/s2. or 125 Joules
Explanation:
batteries are used to power flashlights the energy stored in batteries is converted to light energy given off by flashlights what happens to the energy as it changes form? A) all of the energy is transformed into light energy. B) some of the energy transforms to thermal energy C) half of the energy is transformed to thermal energy. D) half of the energy is transformed to light energy.
Answer:
some of the energy is transformed to thermal energy
Answer:
some of the energy transforms to thermal energy
Explanation:
What happens in
this circuit after the
current leaves the
battery?
A. It goes through all three lights and back to the battery.
B. It goes through all three lights and stops.
C. It goes through the wire and stops.
Answer:
The current is basically the intensity of the electrons over a period of time, in a way.
So, if electrons are leaving the battery to carry charge, they must come back to the battery eventually :).
Your answer is A, it goes back to the battery
The radius of the earth is 6.37 x 10ºm How fast in meters per second is a tree on the equator moving because of the earth's rotation? How fast is a polar bear at the north
pole?
Answer:
yea what the other guy said
can someone please answer this, ill give you brainliest and your getting 100 points.
Answer:
Pacific and Australia
Explanation:
Convergent boundary is the area where two plates collide.
Means the direction of arrows should be opposite and towards each other .
Answer:
Pacific and Australian
Explanation:
Convergent boundaries are where two plates come together. Either tall mountains are formed on land or deep trenches in the ocean. There are deep ocean trenches where the Pacific and Australian plate converge.
2. Summarize how the force of gravity
factors into at least three processes in
the formation of stars. SC.8.E.5.4
What is the KE of a 4 kg mass at 3 m/s?
Answer:
12
Explanation:
give me 10 dollars I want brainly tutor
[tex]\tt KE=\dfrac{1}{2}mv^2\\\\KE=\dfrac{1}{2}\times 4\times3^2\\\\KE=18~J[/tex]
e yea guess so but ummm
Answer:
u right u right, curious what color shade that is
Answer:
Explanation:
......................
A 1.5 kg ball is dropped from a height of 2.Gm. Assuming energy is
conserved within the system, what is the speed of the ball the instant
before it strikes the ground?
Answer:
Plug in the given values and solve for the final velocity. Remember, when the ball is on the ground it has a height of zero.
Explanation:
help me with Physics. please
On Saturn, the acceleration due to gravity is 11.08 m/s². On Venus, the acceleration due to gravity is 8.87 m/s². For an alien traveling to both planets, which answer is true?
A. On Venus, the alien would have less mass because the gravity is lower on Venus than on Earth.
B. On Venus, the alien would have more mass because the gravity is lower on Venus than on Earth.
C. On Saturn, the alien would weigh than on Earth because the gravity is higher on Saturn than on Earth.
D. On Saturn, the alien would weight less than on Earth because the gravity is higher on Saturn than on Earth.
Considering the difference between mass and weight, On Saturn, the alien would weigh higher than on Earth because the gravity is higher on Saturn than on Earth.
Difference between mass and weightMass is the amount of matter that a body contains. That is, mass is a measure of the amount of matter that the body possesses.
Weight is the action exerted by the force of gravity on the body; that is, it is a measure of the force that is caused on said body by the gravitational field. The weight is calculated by:
P= m×g
where
P = weight, in Newtons (N)m = mass, in kilograms (kg)g = gravitational constant, in (m/s²)The mass of an object will always be the same, no matter where it is located. Instead, the weight of the object will vary according to the force of gravity acting on it.
Statement correctConsidering the difference between mass and weight, the definition of weight, and that gravity on Earth has a value of 9.8 m/s², the correct answer is option C.) On Saturn, the alien would weigh higher than on Earth because the gravity is higher on Saturn than on Earth.
This can be seen in the expression for the weight calculation. Since the mass is the same both on Earth and on Saturn, if the gravity of the latter is greater, the product of mass with gravity must be greater.
Learn more about mass and weight:
https://brainly.com/question/17330162
https://brainly.com/question/20195594
What happened to North American coastal waters when the great white shark population decreased?
The oyster population increased.
O The clam population increased.
The ray population increased.
The scallop population increased.
Answer:
The Ray Population Increases
Explanation:
This happens because the great white eats bigger animals
Please heeelp meeeeeeeeee
The sum of the kinetic and potential energies of a system of objects is conserved: Group of answer choices only when no external force acts on the objects only when the objects move along closed paths only when the work done by the resultant external force is zero none of the above
The sum of the kinetic and potential energies of a system of objects is conserved only when no external force acts on the objects.
Conservation of mechanical energyThe principle of conservation of mechanical energy states that the total mechanical energy of an isolated system (absence of external force) is always constant.
M.A = P.E + K.E
where;
P.E is potential energy
K.E is kinetic energy
Thus, the sum of the kinetic and potential energies of a system of objects is conserved only when no external force acts on the objects.
Learn more about conservation of mechanical energy here: https://brainly.com/question/24443465
A person uses a match to light charcoal in a grill. Which statement describes
a chemical property of the charcoal?
A. It has a high boiling point.
B. It is an electrical insulator,
C. It has a high temperature
Answer:
It is flammable.
Explanation:
Because they have an extended structure, elements that are _
tend to be in the _
state at room temperature.
Answer:
Metal, middle of the periodic table, solid.
Explanation:
Because they have an extended structure, elements that are metal tend to be in the middle of the periodic table state at room temperature as solid.
A 3 x 10^-6 C charge is 5m away from a -2x 10^-6 C charge A. Attractive because one is positive the other one is negative B. Determine the magnitude of the electrostatic force acting between them.
Answer:
0.0021576N
Explanation:
F=(k)(q1q2/r^2)
F=(8.99×10^9)(3×10^-6)(2×10^-6)/(5^2)
F=0.0021576N
A __________ is an abnormal crackling, rattling, or bubbling sound heard on auscultation of the chest.
A __rales ________ is an abnormal crackling, rattling, or bubbling sound heard on auscultation of the chest.
What are rales ?
Rales are an abnormal sound heard accompanying the normal respiratory sounds on auscultation of the chest
Rales heard over the lung bases are a sign of of heart failure that is of at least moderate severity. With acute pulmonary edema, rales are frequently accompanied by wheezing and expectoration of frothy, blood-tinged sputum.
learn more about rales:
https://brainly.com/question/14988695?referrer=searchResults
#SPJ2
The gravitational force is always attractive, while the electric force is both attractive and replusive. What accounts for this difference?
someone please answer this ill give you brainliest and your getting 100 points.
Volcanism .
Mountain is found over the earth not inside (It has some parts inside but not much) .So mountain building is of no use.Seismic waves are formed by plate techtonics.Its of nno use.Finally the internal area of earth is filled with magma ,so volcanism is more requiredWhat is the solubility of KNO3 at 80 degrees?
Answer:
100 g H₂O
Explanation:
Please mark me as brainliest
helppppppppppppp, 15 pts
Answer:
You answer is C. A hamburger on the grill
What is Conduction?
Conduction is the transfer of heat through DIRECT CONTACT.
How can I tell the difference between Conduction, Convection, and Radiation?
To know how to find the difference, you must first now what each type of heat transfer is.
Conduction-the transfer of heat through DIRECT CONTACT.
Radiation-The transfer of heat without direct contact, energy
Convection-Heat rising and cold sinking
Just think about these definitions everytime you see a question like this!
Description for Iiotibial band (ITB) syndrome
Iliotibial band syndrome occurs when a tendon called the iliotibial band rubs against the hip or knee bones, causing it to become inflamed or swollen. The tendon runs from the top of your pelvic bone down to your knee on the outside of your leg. When it becomes overly tense, it grinds on your bones (tight).
The repetitive bending of the knee during physical activities such as running, cycling, swimming, and hiking is a common cause of iliotibial (IT) band syndrome. Fascia, or connective tissue, makes up the IT band. It is an elastic collection of fibers that extends from the hip to below the knee along the thigh.
300N effort is applied to lift the load of 900N by using a first class lever. If the distance between the load and fulcrum is 20m, the calculate the distance from fulcrum to the effort.
Answer:
Effort=300N
Load=900N
Load distance=20m
Now,
Ed=(L*Ld)/E
Ed=(900*20)/300
Ed=1800/300
Ed=6m
Explanation:
Answer:
This is the correct answer!
Effort=300N
Load=900N
Load distance=20m
Now,
Ed=(L*Ld)/E
Ed=(900*20)/300
Ed=1800/300
Ed=6m
Hence, the distance from fulcrum to effort is 6 m
Explanation:
Plato
what is magnitude ?..
:(
Answer:
A Magnitude is simply a quantitative number while intensity gives us the idea of impact.
Explanation:
Hope this helps
How can scientists best confirm and validate the results of an experiment so they can publish their findings?
by removing the control from the experiment
by adding more variables to the experiment
by decreasing the number of trials
by creating a replicable experiment
Answer:
How can scientist best confirm and validate the result of an experiment so they can publish their findings?
Answer:
D. By creating a replicable experiment Is The correct Answer!
Hope this Helps!!
Answer:
D
Explanation:
By creating a replicable experiment
1.what would happen if hypothetically i travelled more than the speed of light?
2.why are most objects in the universe roundish
3.why do the laws of physics on macro level differ from those on the quantum level.
4.How do light travel in space if there is no medium?
if the momentum of the erth is used to catapult space missions towards other planets, does it mean that if there was a humongous planet, its momentum could catapult me to a larger range ?
5.whats beyond the observable universe?
6.why cant we use gravity of an object in space and create an artificial atmosphere. how could that be done?
If you have more questions you can tell me in comments.
Answer:
Explanation:
I'm assuming these are personal questions? Because a few of your questions are incorrect. I'll do my best to explain the ones I do know.
1.) Nobody actually knows what would happen if you travel faster than light. Einstein showed this was impossible due to it requiring an "infinite" amount of energy. My personal belief is that time itself stops existing. Your guess is as good as mine, nobody really knows.
2.) Most objects in the universe are round mostly because of gravity and density. All objects in the universe strive for minimum energy states. A sphere has a minimum gravitational potential than other geometry.
3.) Again, this is another one where nobody knows "why." On the macroscopic, there is classical mechanics. Then once you go into the microscopic world, you enter the realm of quantum mechanics. It's not that the "laws" are different. There is still conservation of momentum and such. Its just that they're expressed differently.
4.) The explanation for this is most likely due to light being composed of particles, photons. Sound cant travel if there is no medium, because sound is purely a wave. There is no such thing as a sound particle, at least not a physical one. You can think of light as traveling photons carrying energy. That's the particle interpretation of light.
Space missions do not use the Earth's momentum to catapult things in space. Each mass in the universe creates a corresponding gravitational field. So, planets create gravitational fields. The current theory of gravity is Einstein's theory of General Relativity, which states that energy and momentum curve spacetime. Special relativity proved the energy/mass equivalence. General relativity predicts that spacetime will curve around large masses. You can think of planets bending spacetime like a bowling ball in the center of a trampoline. This process in reality is 3-D and not 2-D like the trampoline analogy. But, the entire process of "catapulting" is using these gravitational "wells" of spacetime to minimize fuel and travel time.
5.) We don't know what beyond the observable universe. From the Big Bang, the universe only existed for about 13 billion years. So, light only traveled for 13 billion years long. We cant see passed the observable universe if the light hasn't even reached us yet. The reason the size of the observable universe is larger than 13 billion light years, is because we predict the universe is expanding faster than the speed of light. Special relativity demands that mass cannot go faster than the light, but it never restricted spacetime itself.
6.) Planets use gravity to keep their atmosphere. We could theoretically place a massive object on a planet and increase the gravitational field. But that is really impractical. We can't "create" gravity because we dont know if gravity is a particle. We only think of it at the moment as a non-physical wave, a ripple in spacetime. I have personal thought experiments in how we could terraform a planet, and create atmospheres. But that goes into electromagnetism, and not gravity.