PLEASE SOMEONE HELP!! what is the answer? WILL MARK BRAINLIEST!!
Answer:
A.
Explanation:
The answer should be A.
i apologize if it is incorrect-
I hope it helps! Have a great day!
Anygays-
how did the intensity of a sound wave change if the distance from the source is decreased by a factor of 2?
Answer:
If it is increased by a factor of 2 then it would be decreased by a factor of 4.
Explanation:
I hope you have a great day!
Anygays-
Which changes in an electric motor will make the motor stronger? select 3 options. using a stronger permanent magnet using a weaker permanent magnet increasing current in the electromagnet decreasing current in the electromagnet increasing the distance between the magnets decreasing the distance between the magnets
1. Using Strong Permanent. 2. increasing the current. 3. Decreasing the space between Magnets
Explanation:
Brainiest
The changes that make the motor stronger will be using strong permanent magnets, increasing the current, and decreasing the space between magnets.
What is an electric motor?An electric motor is a mechanism that turns electricity into mechanical energy.
The interaction between the motor's magnetic field and electric current in a wire winding generates force in the form of torque imparted to the motor's shaft in most electric motors.
An electric generator is physically equivalent to an electric motor, but it converts mechanical energy into electrical energy using a reversed flow of power.
When string magnets are used, a strong flux is produced, and the motor becomes more powerful. Internal flux has a significant impact on coil strength.
Increasing current results in greater power. In the same way, shortening the distance between magnets makes the motor stronger by increasing flux and torque.]
Hence the changes that make the motor stronger will be using strong permanent magnets, increasing the current, and decreasing the space between magnets.
To learn more about the electric motor refer to the link;
https://brainly.com/question/15409160
Use the passage to answer the question.
Light travels from the stars to Earth. As light travels, it moves through the empty vacuum of space. This is not something that waves do, because they need a medium to travel through, while particles do not. This shows that the particle model is best for explaining this phenomenon.
What is the reasoning in this passage?
(1 point)
Light travels from the stars to Earth.
As light travels, it moves through the empty vacuum of space.
This shows that the particle model is best for explaining this phenomenon.
This is not something that waves do because they need a medium to travel through, while particles do not.
This is not something that waves do because they need a medium to travel through, while particles do not.
How light travels in space?A light travels without any medium while on the other hand, a medium is required for sound waves to move from oe place to another. Sound is a mechanical wave that cannot travel through a vacuum.
So we can conclude that electromagnetic waves like light do not require medium for its propagation.
Learn more about light here: https://brainly.com/question/19697218
m=3000km v=25m/s what’s the momentum?
Answer:
75000kg m/s
Explanation:
Momentum = Mass X Velocity
p = mv
3000 X 25 = 75000 kg m/s
what is the gpe of the ball at position a (20-m high)
Answer:
Explanation:
P.E. = mgh = 7.7 * 9.81 * 20 j
If 100 kg person weighed 400 N on the planet Zorg,
what is the acceleration due to gravity on Zorg?
Answer:
4 m/s²
Explanation:
Formula
Weight = Mass x Gravity due to accelerationSolving :
400 N = 100 kg x gg = 400/100g = 4 m/s²Answer:
Explanation:
accleration = Force /mass
a = 400 / 100
a = 4 m/s^2
i need help please!!
Answer:
on the axis ties and greph
HELP ME PLEASEEEE ILL GIVE BRAINLY
Answer:
Labeling from top left to bottom right
A) transmission - direct light being transmitted as direct light
B) reflection - light being reflected back
C) refraction - incident light being refracted
D) diffraction - diffracting slit shown
E) absorption - light absorbed and reemitted
F) scattering - light scattered in different direction
How does valles marineris differ from the grand canyon?.
Explanation:
Named Valles Marineris, the grand valley extends over 3,000 kilometers long, spans as much as 600 kilometers across, and delves as much as 8 kilometers deep. By comparison, the Earth's Grand Canyon in Arizona, USA is 800 kilometers long, 30 kilometers across, and 1.8 kilometers deep.
What holds the moon in place, orbiting around earth?
Answer:
Gravity
Explanation:
Pick the right answer
a bullet of mass 50gm is moving with the velocity of 720 km / HR calculate the key of bullet
Answer:
1000 j
Explanation:
KE = 1/2 m v^2 where m is in kg and v = m/s
= 1/2 * .050 * (720 *1000/3600 )^2
a huge rock out of skateboard gets so hard during the day they can't sit on it from ______.
1) convection
2) conduction
3) radiation
Answer:
2 conduction
Explanation:
Answer:
2) conduction
Explanation:
They can't sit on it due to the heat that is felt as soon as a person comes in contact with itThis is commonly known as "conduction"Describe mathematically how two distinct waves each with wave functions like the one in eq. 2 – call them y1 and y2 – will combine. We call this interaction the principle of superposition.
The resultant wave of the different wave functions is = y1 + y2
Calculation of the resultant wave functionsThe principle of superposition states that two waves moving through the same medium, the resultant value of the wave function is the sum of the different wave functions.
Waves superimpose by adding their disturbances,each disturbance corresponds to a force, and all the forces add.
Therefore, the resultant wave of the different wave functions is the addition of both wave functions which is = y1 + y2.
Learn more about waves here:
https://brainly.com/question/25847009
Questions #4, 5, and 6:
Part 1 of 3: Two moles of helium gas initially at 335 K and 0.58 atm are compressed isothermally to 1.44 atm. Find the final volume of the gas. Assume that helium behaves as an ideal gas. The universal gas constant is 8.31451 J/K · mol. Answer in units of m³.
Part 2 of 3: Find the work done by the gas. Answer in units of kJ.
Part 3 of 3: Find the thermal energy transferred. Answer in units of kJ.
For two moles of helium gas initially at 335 K and 0.58 atm are compressed isothermally to 1.44 atm, The solutions are is mathematically given as
V2=0.03818 m3W=-5.065KJQ =5.065 KJWhat is the final volume of the gas?Generally, the equation for the Ideal gas law is mathematically given as
PV=nRT
Therefore
V1=2*8.31451*335/(0.58*1.01325*105)
V1=0.09479 m3
Also
V2=V1*(P1/P2)
V2 =0.09479*(0.58/1.44)
V2=0.03818 m3
b)
W=nRTLn(V2/V1)
W=2*8.31451*335*Ln(0.03818/0.09479)
W=-5.065KJ
c)
In conclusion, Heat energy
Q=-W
Q =5.065 KJ
Read more about Energy
https://brainly.com/question/13439286
Which of the following is not true about tectonic plates
Answer:
Scientists have identified about a dozen major and several minor tectonic plates
A truck covers a distance of 360 km in 5 hrs. Find its speed
Answer:
72 km / hour
Explanation:
Speed equals to distance over time. We are given distance equal 360 km and time in 5 hours.
Hence:
[tex]\displaystyle \large{s=\frac{360}{5}}\\\displaystyle \large{s=72}[/tex]
Therefore, the speed is 72 km / hour.
Notes
Sometimes, speed is defined as ‘v’ while velocity is defined as ‘v vector’ indicating that velocity is speed with direction and speed is just velocity with only magnitude.
__________________________________________________________
Select the correct answer from each drop-down menu. nick’s swimming goggles are made of blue plastic. when he straps them on, he notices that the goggles change the color of the objects around him. a white ring buoy appears because the blue plastic all colors of light except blue. only the blue light the ring buoy passes through the blue plastic.
The colors Nick observes through his swimming goggles are because of the colors it absorbs, which are all colors except blue.
Why do we observe different colors?We see or observe different colors because different substances reflect different colors while a absorbing different colors.
The colors of objects are as a result of the color they reflect while absorbing others.
The colors Nick observes through his swimming goggles are because of the color it absorbed.
A white ring buoy appears blue because the blue plastic absorbs all colors of light except blue. Only the blue light of the ring buoy passes through the blue plastic.
Learn more about colors at: https://brainly.com/question/911645
#SPJ4
If we say that a galaxy has a lookback time of 1 billion years, we mean that _________.
Answer:
its light traveled through space for 1 billion years to reach us
Explanation:
What is Newton's Third law of motion? Explain how this roller coaster
demonstrates Newton's Third law of motion.
Answer:
Newton's third law of motion says, "For every action there is an equal and opposite reaction." So that applied to the student's roller coaster, between the marble and the track. When the marble went up and down the hill, it created different forces onto the track.
Explanation:
mark as brainiest
Why is solar energy a viable alternative energy source
Solar energy is a renewable energy resource that can provide suitable power for the world in general. It is one of the most abundant energy resources on Earth. Amongst the reasons why solar energy is a viable alternative energy are:
Solar Energy as an alternative source of energyIt is a free energy sourceThe sun is the largest source of free energy you can utilize on this planet. It can provide enough power that can supply the world’s electricity needs for a year.
It’s Good for the EnvironmentOne of the primary benefits of utilizing solar energy is that it can provide a clean, green source of power. It is a self-sufficient renewable energy source.
Therefore, solar energy is a viable alternative energy source because it is a renewable source of energy.
Read more on Solar energy:
https://brainly.com/question/17711999
Answer:
It has an endless supply
Explanation:
Pearson Connexus 2023.
Unlike a nonrenewable source of energy such as fossil fuels, solar power is a renewable source of energy that will not run out.
Seth and Diana were asked to be the leaders for a game of tag during recess at school. Seth and Diana can ensure that all interested students get a chance to participate equally regardless of ability to run fast by having the: Tagged players sit out until the next game starts Tagged players perform a fitness activity then return to the game Two youngest students be the taggers Two fastest students be the taggers
Answer:
B
Explanation:
did this yesterday with my friend
Answer: Tagged players perform a fitness activity
Explanation: Proof of validity is shown below.
You travel 200 kilometers in the first two hours. During the next hour, you stop for lunch and only travel 25 kilometers. What was your average speed?
Answer:
75 km/hour
Explanation:
Total distance travelled= 200+25 = 225 km
Total time= 2+1 hours = 3 hours
Average speed= Total Distance/Total time = 225/3 = 75 km/hr
The region around a magnet in which magnetic forces can act is called the
magnetic field.
domain.
pole.
solenoid.
Answer:
magnetic fieldExplanation:
The region around a magnet in which magnetic forces can act is called a magnetic field.
Domain is not related to this topic ⇒ MathematicsPole ⇒ Magnets possess both North and South polesSolenoid ⇒ A iron core around which a wire is usually coiledAyo? i need help asap
Let's do some calculation! Using the information below, calculate the speed of the wave. MAKE SURE TO INCLUDE YOUR UNITS!
wavelength = 2.3 cm and frequency = 3.7 Hz
A sound wave passes through regions of the ocean with varying density. How do the varying wavelengths correspond to the density of the water
Sound moves faster in the denser regions of the ocean than in the less dense regions of the ocean.
Speed of soundWe know that sound is a wave whose medium of propagation isthrough matter. Hence, sound move faster in a dense object than in a less dense object.
As such, sound moves faster in the denser regions of the ocean than in the less dense regions of the ocean.
Learn more about density: https://brainly.com/question/12980705
The form of energy associated with the motion, position, or shape of an objects called:.
What conditions are necessary for total internal reflection to occur?.
Answer: When a ray of light travels from an optically denser medium to an optically rarer medium and is incident at an angle greater than the critical angle for the two media, the ray totally reflects back into the medium, obeying the laws of reflection. This phenomenon is known as the total internal reflection.
Explanation:
In science, a new hypothesis must be (mark all correct answers):
1. falsifiable by experimental testing or observations.
2. completely consistent with all previous laws and theories of science.
3. possible to prove correct.
4. based solely on physical causes.
Answer:
1, 2, and 3.
Explanation:
Hypotheses must be able to be proven false, otherwise it’s a law. It must be consistent with other theories otherwise it’s not true, and it has to be possible to prove correct, otherwise it’s a theory.
The true statement is "Falsifiable by experimental testing or observations." The correct option is 1.
In science, a hypothesis is a proposed explanation or prediction for a phenomenon or set of observations.
A new hypothesis is a fresh idea put forth by a scientist to explain a phenomenon or observation that has not been explained or understood fully by existing scientific theories or hypotheses.
The new hypothesis should be based on previous knowledge and observations, and it should be testable and falsifiable through experiments or observations. Scientists use hypotheses to guide their research and develop theories, which are more comprehensive explanations backed up by multiple lines of evidence.
Therefore, only Option (1) is the correct answer.
To learn about alternate hypotheses click:
https://brainly.com/question/31319397
#SPJ2