Answer:
Homeostasis maintains optimal conditions for enzyme action throughout the body, as well as all cell functions. It is the maintenance of a constant internal environment despite changes in internal and external conditions.
It is the obligation of researchers to review and comment on the research of other researchers. Please select the best answer from the choices provided T F.
Thorough inquiry and analysis of materials and sources to establish facts and reach new findings are known as resarch. False is the best answer from the choices provided
What is research?Thorough inquiry and analysis of materials and sources to establish facts and reach new findings.
It is false that researchers are required to evaluate and remark on the work of other researchers. It is not their responsibility - they do not have to do it,
But they may if they want to and if the author allows them to. However, they are not compelled to do so by law or anything else. They do it simply out of goodwill or genuine interest.
Hence False is the best answer from the choices provided.
To learn more about the research refer to the link;
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Answer: false
Explanation:
The amount of energy in the universe:
A)is decreasing slowly.
B)is rapidly decreasing.
C)is increasing quickly.
D) remains constant.
Answer: D
Explanation:
The total energy in the universe is constant. It cant be created or destroyed
Answer:
A
Explanation:
energy decays overtime
The James Webb Space Telescope is positioned around 1.5 million kilometres from the Earth on the side facing away from the Sun. The telescope remains at this distance and orbits around the Sun with the Earth’s orbital velocity.
--Determine the angular velocity ω of the telescope as it orbits around the Sun.
--The centrifugal Fω and gravitational force FG are acting on objects orbiting the Sun: F =Fω−FG. Based on this, how much should the telescope accelerate towards or away from the Sun?
--Why is the orbit of the telescope stable nonetheless? What other forces need to be considered?
The angular velocity depends on the length of the orbit and the orbital
speed of the telescope.
Response:
First question:
The angular velocity of the telescope is approximately 0.199 rad/sSecond question:
The telescope should accelerates away by approximately F = 0.0005·mThird question:
The pulling force between the Earth and the satelliteWhat equations can be used to calculate the velocity and forces acting on the telescope?The distance of the James Webb telescope from the Sun = 1.5 million kilometers from Earth on the side facing away from the Sun
The orbital velocity of the telescope = The Earth's orbital velocity
First question:
[tex]Angular \ velocity = \mathbf{\dfrac{Angle \ turned}{Time \ taken}}[/tex]
The orbital velocity of the Earth = 29.8 km/s
The distance between the Earth and the Sun = 148.27 million km
The radius of the orbit of the telescope = 148.27 + 1.5 = 149.77
Radius of the orbit, r = 149.77 million kilometer from the Sun
The length of the orbit of the James Webb telescope = 2 × π × r
Which gives;
r = 2 × π × 149.77 million kilometers ≈ 941.03 million kilometers
Therefore;
[tex]Angular \ velocity = \dfrac{29.8}{941.03}\times 2 \times \pi \approx 0.199[/tex]
The angular velocity of the telescope, ω ≈ 0.199 rad/sSecond question:
Centrifugal force force, [tex]F_{\omega}[/tex] = m·ω²·r
Which gives;
[tex]F_{\omega} = m \cdot \dfrac{28,500^2 \, m^2/s^2}{149.77 \times 10^9 \, m} \approx 0.0054233 \cdot m[/tex]
[tex]Gravitational \ force, F_G = \mathbf{G \cdot \dfrac{m_{1} \cdot m_{2}}{r^{2}}}[/tex]
Universal gravitational constant, G = 6.67408 × 10⁻¹¹ m³·kg⁻¹·s⁻²
Mass of the Sun = 1.989 × 10³⁰ kg
Which gives;
[tex]F_G = 6.67408 \times 10^{-11} \times \dfrac{1.989 \times 10^{30} \times m}{149.77 \times 10^9} \approx 0.00592 \cdot m[/tex]
Which gives;
[tex]F_{\omega}[/tex] < [tex]F_G[/tex], therefore, the James Webb telescope has to accelerate away from the Sun
F = [tex]\mathbf{F_{\omega}}[/tex] - [tex]\mathbf{F_G}[/tex]
The amount by which the telescope accelerates away is approximately 0.00592·m - 0.0054233·m ≈ 0.0005·m (away from the Sun)
Third part:
Other forces include;
The force of attraction between the Earth and the telescope which can contribute to the the telescope having a stable orbit at the given speed.Learn more about orbital motion here:
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What is an effect of gravity on objects on the surface of Earth? Check all that apply. Objects ""fall"" toward the center of Earth. Objects are pulled by Earth but do not pull on Earth. Objects accelerate at a rate of 9. 8 m/s each second. Objects travel at a rate of 9. 8 m/s toward the center of Earth. Objects are pulled by Earth more strongly than they pull on Earth.
Answer:
Objects are pulled toward earth
Objects travel at a rate of 9.8m/s
Explanation:
these are the only one that I know. sry :(
Sometimes the north and south poles of atoms in a material will line up. What is the term for the region where this occurs?.
Answer:
Magnetic domains
What does Schrödinger's cat explain in quantum mechanics?.
Answer:
Schrodinger's cat explains that the state of an object is not known until
an observer observes the state - therefor if the cat is in an enclosed box and the probability of some toxic substance escaping is 1/2, the cat is 1/2 dead and 1/2 alive until its actual state is observed by an external observer. An old saying "is the moon really there if no one is looking at it"
An object that allows light to pass through is said to...
Select one:
a. absorb light.
b. transmit light.
c. reflect light.
d. refract light.
A
Explanation:
.
it's let's the light to pass
An object like glass that allows light to pass through is said to refract light.
PROPERTIES OF WAVESFour general properties of waves are;
RefractionReflectionInterferenceDiffractionAn object that allows light to pass through is said to refract light because of the followings
If it absorbs, it will not transmit the light.If it reflect, some portion of the light will not be transmitted.Light refract when moving from one medium to another.Therefore, An object like glass that allows light to pass through is said to refract light.
Learn more about Light waves here: https://brainly.com/question/25847009
Sunspots, flares, prominences, and coronal mass ejections are all caused by.
Answer:
Sunspots, flares, prominences, and coronal mass ejections are all caused by magnetic activity on the Sun.
A 0.045-kg golf ball is dropped from rest. Is dropped from a height of 1.3m and comes back up at a height of .7m
The time to drop from 1.3m and velocity after height at 0.7 mis mathematically given as
t1 = 0.515 sec
v0 = 3.7m/s
What is the time to drop from 1.3m and velocity after height at 0.7?Question Parameters:
A 0.045-kg golf ball is dropped from rest.
Is dropped from a height of 1.3m and comes back up at a height of .7m
Generally, the equation for the time to drop from 1.3m is mathematically given as
yf - yi = vi t + a t^2/ 2
Therefore
0 - 1.3 = 0 - 9.8 t^2 /2
t1 = 0.515 sec
Hence, after its max height is 0.7 m,
vf^2 - vi^2 = 2 a (yf - yi)
0^2 - (v0)^2 = 2(-9.8)(0.7 - 0)
v0 = 3.7m/s
Read more about Time
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When a golf ball is hit, it travels at 41 meters per second. The mass of a golf ball is 0.045kg. Calculate the kinetic energy of the golf ball.
Answer:
75.645 J
Explanation:
The kinetic energy is related to the mass and velocity by the formula ...
KE = 1/2mv²
For the given mass of 0.045 kg, and velocity of 41 m/s, the kinetic energy is ...
KE = 1/2(0.045 kg)(41 m/s)² = 75.645 J
__
The unit of energy, joule, is a derived unit equal to 1 kg·m²/s².
What is the period and frequency of the second hand on a clock?
Answer:
Explanation:For second hand, period = 1 min = 3660 s; frequency = 0.0166 Hz}\\\mbox{For minute hand, period = 1 hr = 3600 s; frequency = 2.77}\times10^{-4} Hz\\\mbox{For hour hand, period = 12 hrs = 4300 s; frequency = 2.3}\times10^{-5} Hz.
Identify and describe two changes of state that release energy.
Help me with this please. :))
help please only answer if you really know i need this ill give 50 points ;( thx
A student is performing an experiment comparing sound and light waves. The student gathers the following data. A 3 column table with 3 rows labeled Speed of Sound. The first column is labeled medium with entries ice, water, steam. The second column is labeled temperature in degrees Celcius with entries 0, 25, 100. The last column is labeled speed of sound in meters per second with entries 3200, 1500, 346. A second 3 column table with 3 rows labeled speed of light. The first column is labeled medium with entries air, water, glass. The second column is labeled index of refraction with entries 1. 00, 1. 33, 1. 57. The last column is labeled speed of light in meters per second with entries 2. 99 times 10 Superscript 8 Baseline, 2. 26 times 10 Superscript 8 Baseline, 1. 91 times 10 Superscript 8 Baseline. What conclusion does the student most likely make based on this data? Light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. All sound waves always have the same energy, so the temperature of the medium does not affect wave speed. Light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. Tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.
Answer:
Tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids. (D).....
Tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.
What is sound wave?Sound wave is a mechanical wave because it requires material medium for its propagation.
In solid, the particles or atoms are closely packed together, which usually slow down light waves causing a greater speed when they bounce on each other.
Thus, we can conclude the following based on the data;
Tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.
Learn more about sound waves here: https://brainly.com/question/1199084
#SPJ2
A cyclist starts to pedal vigorously, increasing her velocity from 6.0 m/s [E] to 14.0 m/s [E]
in 6.0 s. The total mass of the cyclist and the bicycle is 58 kg. Find the net force acting
on the cyclist and bicycle. [ans: 77 N [E]]
vf=vi+at
14=6+a.6
a=1.33 m/s²
∑F = m.a
∑F =58 x 1.33
∑F = 77.14 /n
What is a fuse??? what it is made up of??
A fuse is a short and thin piece of wire of a uniform area of cross section.
It is made up of a material of low melting point so that it may easily melt due to overheating when the current in excess to the prescribed limit passes through it.Further, it should have high resistance so as to produce sufficient heat to melt it. Generally an alloy of lead and tin is used as the material of the fuse wire because its melting point is low (=250°) and specific resistance is high.Explanation:
Hope it helps you!!A fuse is a safety device in an electric plug or circuit. It contains a piece of wire which melts when there is a fault so that the flow of electricity stops.
The fuse wire is made up of Sn (tin) and Pb (lead) alloy because of its high resistance and low melting.
First attachment shows fuse arrangement normally used in the houses and second attachment shows a cartridge type of fuse that is used mainly in costly appliances of our home like an air conditioner, geyser, etc.
Explanation:
Hope it helps you!!The speed of sound in a solid medium is more but less in a gas medium.Why?
Answer:
The speed of sound is the most in solids as the molecules present in solids are closer where as the molecules in gas medium are far apart from each other....
Explanation:
Hope this helps!!!!
A "phaser" blast form the starship "ENTERPRISE" sends out a
light burst with a wavelength of 636 nanometers.
(nm=1. 0x10-9m) What is the frequency of the light beam?
The frequency of the light beam is 4.72 x 10¹⁴ Hz.
Frequency of the light beamThe frequency of light beam and wavelength of light is related in the following equations;
c = fλ
where;
c is the speed of light = 3 x 10⁸ m/sf is the frequencyλ is the wavelengthf = c/λ
f = (3 x 10⁸) / (636 x 10⁻⁹)
f = 4.72 x 10¹⁴ Hz
Thus, the frequency of the light beam is 4.72 x 10¹⁴ Hz.
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Why do the golf ball have dimples?
Answer:
HELLO! I WILL EXPLAIN WHY GOLF BALLS HAVE DIMPLES.
Explanation:
DIMPLES ON A GOLF BALL CREATE A THIN BOUNDARY LAYER OF AIR THAT CLINGS TO THE BALL'S SURFACE. THIS ALLOWS THE AIR TO FOLLOW THE BALL'S SURFACE A LITTLE FARTHER AROUND THE BACKSIDE OF THE BALL, THEREBY DECREASING THE SIZE OF THE WAKE.
I AM SO SORRY ABOUT THE CAP LOCKS I THINK MY CAP LOCKS BUTTON IS PUSHED, AND IT IS NOT POPPING UP FOR SOME REASON.
ANYWAYS, HAVE A GREAT DAY!!!!!!
What is the wavelength of a periodic wave that has a frequency of 5.0 Hz and
a speed of 10 m/s?
Answer:
26
Explanation:
meters per second has a wavelength of 26.
how does water in a hot spring get hot?
Does anyone know the answer to that
If the distance between slits on a diffraction grating is 0. 50 mm and one of the angles of diffraction is 0. 25°, how large is the path difference? nm How many orders of bright lines does this equal for red light with a wavelength of 650 nm? wavelengths.
The distance the wave traveled between the two-point is the path difference. The path difference will be 2200 nm and 3 orders of bright lines do this equal red light with a wavelength of 650 nm.
What is diffraction grating?A diffraction grating is a type of optical instrument obtained with a continuous pattern. The pattern of the diffracted light by a grating depends on the structure and number of elements present.
The equation of diffraction grating is given as
[tex]\rm n\lambda=dsin\phi\\\\\rm n\lambda=0.50\times10^{-3}\times sin(0.25) \\\\ n\rm \lambda=2.18\times10^{-6} \;m \\\\\rm n\lambda=2200\;nm[/tex]
Hence the path difference will be 2200 nm.
[tex]\rm n\lambda=2200\;nm \\\\\rm n\times650=2200 \\\\\rm n=3.38[/tex]
n= 3
Hence 3 orders of bright lines do this equal red light with a wavelength of 650 nm.
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3 How could you test whether a plastic rod that has been given an electric charge would attract or repel a magnet? Describe your method and include a diagram. What result would you expect to observe?
The charged plastic rod has affinity for insulting items. So, things like saw dust, paper pieces get attracted to it. On the other hand, magnet has affinity for magnetic material like iron. So, it will attract iron pieces.
What would the gravitational field strength be if 100kJ are required to lift a 6kg mass 20m
Answer:
The formula is: weight/mass = gravitational field strength.
Explanation:
How could you increase the kinetic Energy of an object without changing
its mass or gravity? *
Answer: Height
Explanation:
You could raise it further off the ground.
To view an enlarged upright image of an object through a simple magnifier, where must the object be located?.
Answer:within the focal length of the lens, provided the focal length is shorter than the near point distance.
Explanation:Hope it helps
1. If you stare at a field of dots moving upward for 10 seconds and they suddenly stop, in which direction would the dots appear to drift after they stop
The direction the dots will appear to drift after they stop is upwards.
Upward motion of the dotsThe upward motion of the dots appears to be continuous upward for first few seconds it stopped.
This is as a result of conditioning of the mind picturing the dots moving upwards. After few seconds the dots were, the eye perceives a continuous upward motion of the dots before it readjusts and notice that it has stopped.
Thus, the direction the dots will appear to drift after they stop is upwards.
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state the Newton's law Newton's second law of motion
Answer:
It states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.
Answer:
Newtons Second law of motion states that"The rate of change of momentum is directly proportional to the force applied"
