An earth satellite has a speed of 7.5 km/s and a flight path angle of 10 degrees when its radius is 8000 km.
-21.7km square /s square is the angular momentum (in km 2/s).
what is a satellite?The term "satellite" or "artificial satellite" refers to an object that has been placed into orbit in space on purpose. Except for passive satellites, most spacecraft have a way of generating power for the technology they carry, such as solar panels or radioisotope thermoelectric generators (RTGs). Most satellites also have transponders, which are a type of ground station communication system. The most typical satellites, tiny CubeSats, use a standardi Due to the expensive cost of space launch, satellites are designed to be as light and durable as possible. Satellites of the same type can work together to form constellations.To learn more about the artificial satellite, refer to the following link:
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Astronomers observe a typical star using a telescope and a spectrometer. they will see:_________
Astronomers observe a typical star using a telescope and a spectrometer, and thereby they will see a given absorption spectrum of the celestial body.
What is the absorption spectrum of a star?The absorption spectrum of a given star in space is the light that is emitted by this celestial body in Universe, which can be measured by different technological devices including a spectrophotometer.
In conclusion, astronomers observe a typical star using a telescope and a spectrometer, and thereby they will see a given absorption spectrum of the celestial body.
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Consider the reaction, 2 d(g) 3 e(g) f(g) => 2 g(g) h(g) when e is decreasing at 0.36 mol/ls, how quickly is f decreasing? give your answer to 3 decimal places.
The rate at which F is decreasing is 0.12 mol / L s
Given that,
2 D(g) + 3 E(g) + F(g) → 2 G(g) + H(g)
Rate of reaction = - ΔD / 2 Δt = - ΔE / 3 Δt = - ΔF / Δt = ΔG / 2 Δt = ΔH / Δt
Given that,
- ΔE / Δt = 0.36 mol / L s
- ΔE / 3 Δt = - ΔF / Δt
- 0.36 / 3 = - ΔF / Δt
- ΔF / Δt = - 0.12 mol / L s
The rate of reaction is the measure of how quickly or slowly that a reaction proceeds.
Therefore, the rate at which F is decreasing is 0.12 mol / L s
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When an electron is released from rest in a uniform electric field, its electric potential energy?
When an electron is released from rest in a uniform electric field, its electric potential energy increases and this happens due to Law of Conservation of Energy.
What is potential energy in electric systems?The power that is required to move a charge in opposition to an electric field is known as electric potential energy.
A charge must be moved through a stronger kind of electric field with more energy, but it also must be moved through a weaker electric field but present with more energy.
When an electron is released from rest in a uniform electric field it accelerates opposite to the direction of field. Thus, according to the Law of conservation of energy, this energy is increased.
In any kind of uniform electric field, a positive charge that has been at rest accelerates in the direction of the electric field. Therefore, because of this and as a result of the law of conservation of energy, K.E. rises while P.E. falls.
Therefore, P.E. of positively charged particles decreases because the force q causes charged particles to move faster in the direction of the field.
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pls help me. “ how does this poem illustrate the importance of observation in the scientific method?” from the elephant poem PLEASE HELPPPP
The six blind men and elephant poem illustrates how observation is important to understand the subject and how scientific observations are affected by our own perspectives.
In the story, six blind men from Indostan were made to feel an elephant, but they could only touch one part of it like the tusk or the feet. As a result, each man's perception of what the elephant felt like varied. But since they had all felt the same elephant, all of their opinions were accurate.
In science, observation is vital. Scientists employ observation to gather and record facts, which enables them to create and then test their own hypotheses and ideas, just like in the poem where each individual came to his own conclusions. This is why it is common that different scientists reach different conclusions for the same experiment.
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Electrical insulating gloves marked with a yellow label have a maximum use voltage level of _____ v.
Electrical insulating gloves marked with a yellow label have a maximum use voltage level of 17000 V.
What is an electrical insulator?Electric current cannot readily travel through an electrical. Due to their closely bonded state, the insulator's atoms' electrons are immobile. Electric current can flow through other materials more easily, such as semiconductors and conductors. Insulators have higher resistivities than semiconductors or conductors, which makes them stand out from other materials. Non-metallic are the most typical examples.
Since even insulators contain minute amounts of mobile charges (charge carriers) that can carry current, a perfect insulator does not exist. A sufficiently high voltage is supplied to cause the electric field to pull electrons from atoms, which causes all insulators to turn electrically conductive. An insulator's breakdown voltage is what this is.
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According to the giant impact hypothesis about the formation of the moon. Why did the earth not break apart into many pieces when the giant impact happened?
The earth could not be broken apart by the impactor since it was formed of such light material (mostly gas and liquid).
What are the basic features of the theory of the enormous impact ?According to the Giant Impact Hypothesis, which is the most widely accepted theory for how the moon formed, the Earth and a Mars-sized object called Theia collided with each other as they were forming as protoplanets. The moon was created from a large amount of debris. According to this theory, the Moon was created after the Earth collided with a smaller planet that was around Mars' size. The Moon was created when the impact's leftover debris gathered in an orbit around Earth.
The larger body may have caught the iron core of the striking object.
The key to this theory is understanding how consciousness works and harnessing its power for good. By doing so, we can help to manifest positive changes in our world collectively.
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How many protons, neutrons, and electrons are there, respectively, in an atom of o-17?.
In an atom of O-17, proton and electron is 8, and neutrons is 9.
The atomic number, sometimes referred to as nuclear charge number, of a chemical element is the charge number of an atomic nucleus. For conventional nuclei, this is comparable to the proton number, or the number of protons found in the nucleus of each atom of that element.The atomic number of oxygen is 8. Therefore, an atom needs 8 protons in order to be referred to as an oxygen atom. For instance, an atom will no longer be oxygen if it has 9 protons and will now be fluorine. Any atom that lacks 8 protons is not an oxygen atom. For an atom to be neutrally charged, the number of protons and electrons within it must match. Therefore, there should be 8 electrons in all. However, depending on the isotope, the neutron count can change. An oxygen isotope is a distinct variety of oxygen. For instance, oxygen-15, which has 7 neutrons, is a possibility. The neutron count for oxygen-16 would be 8, for oxygen-17 it would be 9, and so on.Learn more about the quantum mechanics with the help of the given link:
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Determine the half-life of a nuclide that loses 38.0% of its mass in 407 hours. 590 hours 281 hours 291 hours 568 hour 204 hours
The half-life of a nuclide that loses 38.0% of its mass in 407 hours is 737 hrs
Let the initial mass of nuclide is N° = 100
The final mass of nuclide after 407 hours
= 100 - 38 = 62
The expression for decay constant is
λ = 1/t ln(N°/Nt)
Substitute the given values and calculate the decay constant as,
λ = 1/407hr ln(100/62)
λ = 9.4 x 10^-4/hr
Now, the half-life is calculated as,
t1/2 = 0.693/λ
= 0.693/9.4 x 10^-4/hr
t1/2 = 737 hrs
Hence, the half-life of a nuclide is 737 hrs
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Underground-fault conditions, an effective ground path will carry current from the point of a ground fault to ________.
Under ground fault conditions, an effective ground path will carry current from the point of a ground fault to electrical supply source
The effective ground path is a low impedance electrically conductive path constructed intentionally to carry current under ground fault conditions. It helps remove dangerous voltage from a ground fault and facilitates overcurrent protective device operation.
Ground fault is a type of short-circuit in which the electricity takes an unplanned path to the ground. It is caused by wrong wiring or damaged insulation / appliance.
Therefore, under ground fault conditions, an effective ground path will carry current from the point of a ground fault to electrical supply source
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What is the average rate of decomposition of a3 in the time interval 20-30 seconds?
5.0E-6(0.000005) is the average rate of decomposition of a3 in the time interval 20-30 seconds.
what is decomposition?Decomposition, often known as rot, is the breakdown of dead organic matter into more basic organic or inorganic components such carbon dioxide, water, simple sugars, and mineral salts.The procedure, which is a component of the nutrient cycle, is crucial for recycling the limited amount of stuff that takes up real estate in the biosphere.After a live thing dies, its body starts to decay.Animals like worms also contribute to the breakdown of the organic compounds. Decomposers are organisms that carry out such processes.Despite the fact that no two creatures degrade in exactly the same way, they all go through the same sequential phases.Taphonomy, which comes from the Greek word taphos, which means tomb, is the broad name for the science that examines decomposition.To learn more about decomposition, refer to the following link:
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Marcus is driving his car at 15 km/h when he brakes suddenly. he comes to a complete stop in 2 seconds. what was his acceleration in km/h/sec? was his acceleration positive, negative, or zero?
When Marcus brakes suddenly and comes to a complete stop in 2 seconds the acceleration in km/h/sec is: -7.5 km/h/sec it is negative because it is decelerating
The formula and procedure we will use to solve this exercise is:
a = (vf - vi) /t
Where:
a = accelerationvf = final velocityvi = initial velocityt = timeInformation about the problem:
vi= 15 km/hvf = 0 km/ht = 2 seca=?Applying the acceleration formula we have:
a = (vf - vi) /t
a = (0 km/h - 15 km/h) /2 sec
a = (-15 km/h) /2 sec
a = -7.5 km/h/sec
Acceleration is negative because it is decelerating
What is acceleration?It is a physical quantity that indicates the variation of velocity as a function of time, it is expressed in units of distance per time squared e.g.: m/sec2 ; km/h2
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Glass is an example of a/an _____________.
Answer:
solid
Explanation:
it's not liquid, nor gas, so solid.
In the article, the study author recommends going on a "photo hunt." What was the purpose of this activity?
In a scavenger hunt, participants compete to collect the greatest number of objects from a predetermined list. As opposed to a scavenger hunt, a treasure hunt entails following a sequence of clues to locate a particular thing or objects.
A sheet containing a list of things will be supplied to each team or person. You have to locate every object and take a picture. Whoever has the most photos at the end of the timer wins. You must always remain as a team if you're participating in it. A spot-the-difference game is Photo Hunt. Players are presented with two identical photographs side by side at each stage, with just five distinctions between them.
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A defibrillator connected to a patient passes 16.0 a of current through the torso for 0.0200 s. how much charge moves?
A defibrillator connected to a patient passes 16.0 a of current through the torso for 0.0200 s. A charge of 0.32C moves.
CalculationDefibrillator passes 16A through the torso of an individual
The time is 0.0200
The charge can be calculated as follows
= I × t
= 16 × 0.0200
= 0.32C
What is a defibrillator?Defibrillators can also restart an abruptly stopped heart. The sole therapy for someone in cardiac arrest is defibrillation. Rapid defibrillation is essential for survival and one of the most important measures in saving a life from Sudden Cardiac Arrest because a person’s chances of survival decrease by 7–10% for each minute that they do not receive it.
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What tools would u bring if u were lost in forest to survive?
Explanation:
two strings fire sticks water
Answer: i would bring a flashlight, cans of food , water filter, swiss army knife, rope, and a radio
Explanation:
what properties do all mechanical waves share?
The planet in our solar system whose orbit actually brings it inside the orbit of another planet is?
Pluto is a planet in our solar system whose orbit brings it inside the orbit of another planet.
What is the explanation for this?Numerous planets can be found in our solar system that Pluto is a member of. Pluto is a planet with an eccentric orbit that is highly oval in form and causes it to enter another orbit. It managed to enter Neptune's orbit. In comparison to Pluto, the dwarf planet, even Neptune can occasionally be far from the sun.
EThe events taking place on the planet are really unusual. In the years 1979 and 1999, it happens. Pluto, however, has never collided with Neptune. This occurs because Pluto only completes two of its three orbits around the sun, whereas Neptune completes three. This event stops two bodies from colliding.
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State the Universal Law Of Gravitation
Answer: Newton's law of universal gravitation is usually stated as that every particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
Explanation:
Hope this helps!
Answer:
every particle attracts every other particle in the universe with force directly proportional to the product of the masses and inversely proportional to the square of the distance between them.
What is the atomic number for an element whose mass number is 115, which contains 66 neutrons per atom?
The atomic number for an element whose mass number is 115, which contains 66 neutrons per atom is: 49
The formula and procedure we will use to solve this problem is:
number of protons = mass number - number of neutronsatomic number = number of protonsInformation about the problem:
mass number = 115number of neutrons = 66atomic number =?Applying the number of protons formula we get:
number of protons = mass number - number of neutrons
number of protons = 115 - 66
number of protons = 49
Applying the atomic number formula we get:
atomic number =number of protons
atomic number = 49
What is an atom?The atom is the smallest part of the composition of matter, it is indivisible and is composed of a nucleus that has protons and neutrons, and around the nucleus there are the electrons.
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A car travels from tuscaloosa to birmingham 1/3 of time at 50.0 km/h and 2/3 of the time at 60.0 km/h. the average speed of this trip is?
The average speed of this trip is 15.72 m/s
Given:
speed = S1 = 50.0 km/h
speed = S2 = 60.0 km/h
time taken to travel with speed S1 = 1/3
time taken to travel with speed S2 = 2/3
To Find:
average speed of this trip
Solution:
distance 1 = speed x time = 50*1000/3600 x 1/3
= 4.62 m
distance 2 = 60*1000/3600 x 2/3 = 11.1 m
Average speed = total distance/total time
= 4.62 + 11.1 / 1 = 15.72 m/s
Hence, average speed is 15.72 m/s
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The stars rise about 4 minutes earlier each night. if the star betelgeuse, of the constellation orion, rises tonight at 1:12 am, you would expect it to rise 22 days from now at the time of?
22 days from now the star Betelgeuse, of the constellation Orion will rise at 11:40 pm
Given that,
Time at which the star rises today = 1:12 am
The stars rise about 4 minutes earlier each night
Minutes earlier it will rise 22 days from now = 4 * 22 = 88 minutes
= 1 Hr 28 Min
The star should rise 1 Hr 28 Min earlier from 1:12 am which is 11:44 pm
But since the time from today to 22 days from now crosses the 12 am mark, the star will be seen twice on the same day. This means that the star seen on 11:44 pm is actually on the 21st day. On 22nd day the star is seen 4 minutes earlier than 11 pm which is 11:40 pm.
We rotate one degree every 4 minutes. We revolve a little more than 1 degree every day around the sun (365 days divided by 360 degrees is 1.014 degrees). So everyday we get to see the star 4 minutes early which is 1 degree.
Therefore, 22 days from now the star Betelgeuse, of the constellation Orion will rise at 11:40 pm
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Ernest rutherford was an important early researcher in nuclear physics. In one experiment, he observed that particles with a positive charge deflected when passing through a thin sheet of gold foil. What conclusion did rutherford make in this observation?.
Answer:
Ernest Rutherford observed that particles with a positive charge deflected when passing through a thin sheet of gold foil, concluding that the atom's positive part is small and dense.
Explanation:
The Ernest Rutherford experiment describes planetary model of an atom. According to the model, an atom has a tiny, compact, positively charged centre called a nucleus, where almost all of the mass is concentrated, while light, negatively charged particles called electrons orbit far around it, much like planets orbit the Sun. In his experiment, the observation that a positive charge is deflected through a thin sheet of gold foil led to the conclusion that the deflection some of the positive charge occurs in a small region of the atom. At the same time, the majority passed through the atom (which was also concluded to be empty space).
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Venus is sometimes called:_____.
a. the evening star
b. the early star
c. the late star
The correct option is (a)the evening star.
Venus is sometimes called the evening star.
Briefing :Venus is the final celestial body to withdraw from view at sunrise and the first to appear in the evening sky. It is referred to as the Morning and the Evening star for this reason. Three factors account for Venus's brightness. First of all, it approaches Earth more closely than any other planet. Second, compared to other inner planets, it is very huge, with a diameter that is nearly twice that of Mars and three times that of Mercury. Thirdly, Venus' dense cloud cover entirely scatters much of the light back into space. Venus really reflects more sunlight than any other planet, at 77%. Venus is so brilliant that it may even be seen during the day.Learn more about the venus with the help of the given link:
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Write a formula for a triangular wave with period 6, minimum value 0 and maximum value of 10
The equation for triangular wave with period 6 and amplitude 10 is -
[tex]$y=\frac{40}{6} |(x -\frac{6}{4})\;mod\;6)-\frac{6}{2}| - 10[/tex].
We have a triangular waveform.
We have to determine the equation representing this triangular waveform.
What is Waveform?
A waveform is a graphical representation of the shape of a wave that indicates its characteristics such as frequency and amplitude.
According to the question, we have -
Time Period = 6
Minimum value = 0
Maximum value = 10
Therefore -
Range → R ∈ [0, 10]
Amplitude = Max. value - Min. value = 10 - 0 = 10
The general equation for a triangle wave with amplitude 'a' and period 'p' is given by →
[tex]$y=\frac{4a}{p} |(x -\frac{p}{4})\;mod\;p)-\frac{p}{2}| - a[/tex]
Now -
a = 10
p = 6
Substituting values -
[tex]$y=\frac{40}{6} |(x -\frac{6}{4})\;mod\;6)-\frac{6}{2}| - 10[/tex]
Hence, the equation for triangular wave with period 6 and amplitude 10 is -
[tex]$y=\frac{40}{6} |(x -\frac{6}{4})\;mod\;6)-\frac{6}{2}| - 10[/tex]
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The supply curve measures quantity ______ on the horizontal axis and ______ on the vertical axis.
The supply curve measures quantity supplied on the horizontal axis and price on the vertical axis.
What is supply curve?The supply curve illustrates the relationship between the price of an item or service and the volume delivered over a specific time period. In a typical scenario, the amount supplied will be shown on the horizontal axis and the price will be shown on the left vertical axis.Supply curves frequently predict whether the price of a commodity will rise or fall in response to demand, and vice versa.The supply curve for products with greater elastic supply is shallower (near horizontal), whereas the supply curve for products with less elastic supply is steeper (closer to vertical).The two main tenets of the law of supply and demand are the supply curve and the demand curve.Learn more about the supply curve with the help of the given link:
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If a car moving at 76 mi/h takes 400 ft to stop with uniform acceleration after its brakes are applied, how far will it take to stop under the same conditions if its initial velocity is 38 mi/h ?
80 step it will take to stop under the same conditions if its initial velocity is 38 mi/h.
What is velocity?Speed is the directional speed of an item moving as a sign of its pace of progress ready as seen from a specific edge of reference and as estimated by a specific norm of time (for example 60 km/h northward). Speed is an essential idea in kinematics, the part of old-style mechanics that portrays the movement of bodies. Velocity is characterized as the pace of progress of position concerning time, which may likewise be alluded to as the immediate speed to stress the qualification from the typical speed. In certain applications the typical speed of an item may be required, in other words, the steady speed that would give a similar resultant relocation as a variable speed.
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The seafloor spreads in opposite directions as magma forces its way upward. Geologists have observed matching, reversed magnetic bands on both sides of this ridge. Which is the best explanation of these matching, reversed bands?
When the Earth's magnetic field reverses, a new stripe, with the new polarity, begins. Such magnetic patterns led to recognition of the occurrence of sea-floor spreading, and they remain some of the strongest evidence for the theory of plate tectonics.
d. the earth experiences cycles of magnetic poles reversingWhy are the magnetic stripes on the sea floor parallel to and symmetrical across the mid-ocean ridge?The specific magnetism of basalt rock is determined by the Earth's magnetic field when the magma is cooling. Scientists determined that the same process formed the perfectly symmetrical stripes on both side of a mid-ocean ridge. The continual process of seafloor spreading separated the stripes in an orderly pattern
With this information, we can conclude that A polarity reversal means that the magnetic North flips to where we know the South Pole is. At the mid-ocean ridge spreading axis.
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The distance from the center of a lens to the point at which light rays converge on the film is known as the ______ of the lens.
The distance from the center of a lens to the point at which light rays converge on the film is known as the focal length of the lens.
In photography, focal length is the distance measured in millimeters (mm) between the optical center of the lens and the camera sensor, where the light information is recorded.
It is important because it dictates the distance your camera will be able to capture. Smaller numbers show more scene and have wider angle while larger numbers show less scene and have tighter angle of view.
What is photography?The process of recording an image on light-sensitive film is known as photography.
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A certain hydrogen spectral line has wavelength 1875 nm when measured in the laboratory. that same line, when measured in a star, has wavelength 1872 nm. what can we say about the star?
The star having wavelength 1872nm is moving toward the earth.
It happens due to the phenomena of Doppler shift. Doppler effect, commonly known as Doppler shift and it is defined as The change is the wavelength or frequency of waves as a result of an observer's motion In relation to the web source.
In visible light it is possible to see the apparent wavelength emitted by stars and galaxies. As a result, a start moving towards the earth appears to emit light with a the short wavelength.
Then the light shows that is static. It is known as blue shift because here spectrum is shifted towards the blue end due to the shortest wavelength.
And when a start goes away from us, it appears that it shifts It's light towards longer wavelength.
This end is referred as redshift because it is closer to the red end of the spectrum.
Add the spectrum of a particular star. Shown that the line appearing at the shortest wavelength is 1872nm in comparison to the laboratory measurement. This shows the same hydrogen line at a greater wavelength 1875.nm results that star is moving towards the Earth.
The star having wavelength 1872nm is moving toward the earth.
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A jogger accelerates at a rate of 0.558 m/s2. how fast is this in mi/hr2? __________ m/hr2 note: 5280 ft/mile, 3.28 ft/m (put your answer in scientific notation, you do not need to include units).
The jogger's acceleration is 0.558m/[tex]s^{2}[/tex]. 9.628 in [tex]m/hr^{2}[/tex] is the acceleration of jogger.
What do you mean by acceleration?The rate at which an object's velocity with respect to time varies is referred to as acceleration in mechanics. The vector quantities are the accelerations (in that they have magnitude and direction). An object's acceleration is determined by the direction of the net force exerted on it.
According to Newton's Second Law, an object's acceleration is determined by a combination of two factors: the mass of the object and its mass, depending on the materials from which it is made. The magnitude of an object's acceleration is directly proportional to the net result of all external forces acting on the object.
The acceleration is measured in meters per second squared in the SI system.
For example, when a vehicle starts from standstill (zero velocity, in an inertial frame of reference) and travels in a straight line at increasing speeds, it is accelerating in the direction of travel. If vehicle turns, an acceleration occurs toward the new direction and changes its motion vector.
The acceleration of vehicle in its current direction of motion is called a linear (or tangential during circular motions) acceleration, the reaction to which the passengers on board experience as a force pushing them back into their seats. When changing direction, effecting acceleration is called radial (or centripetal during circular motions) acceleration, the reaction to which the passengers experience as a centrifugal force.
Jogger's acceleration = 0.558m/[tex]s^{2}[/tex]
1 hour= 3600s
acceleration in mi/[tex]hr^{2}[/tex]=( 0.558*3.28*[tex]\frac{1}{5280}[/tex])/ (1*[tex]\frac{1}{3600}[/tex])= 9.628m/hr[tex]^{2}[/tex]
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