Compared with the orbits of the short-period comets, the orbits of long-period comets
(a) tend to lie in the plane of the ecliptic
(b) look like short-period orbits, but are simply much larger
(c) are much less eccentric
(d) can come from all directions
Answers
Compared with the orbits of the short period comets, the orbits of long period comets can come from all directions.
Short period comets come from the kuiper belt. Comets of long period come from the ort cloud which is a cloud debris surrounding the sun at a distance of 1 light year.
Long period comets have orbital period more than 200 years. Their orbits are inclined in the ecliptic plane. They may be perturbed by a passing star. Their orbits are highly inclined because of spherical origin.
They can be seen in night sky with much brilliance. Their brilliance is because thy have not passed from inner solar system.
Short period comets have orbital period less than 200 years. Haily type comets are example of short period comets.
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Related Questions
Two small spheres have charges Q and 3Q and are separated by a distance d. The force exerted on the charge Q has magnitude F. What is the force on the other charge
Answers
The force on the other charge is also F.
The force between two charged objects is given by Coulomb's law, which states that the force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.
In this case, the force on the charge Q is given by F = k(Q)(3Q)/d^2, where k is Coulomb's constant. Since the force depends on the product of the charges, the force on the charge with charge 3Q will be the same as the force on the charge with charge Q, i.e., F.
Therefore, the force on the charge 3Q is also F.
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Which of these would be a model of diffusion? responses a student passes through a revolving door a student passes through a revolving door two students pass by each other in a hallway two students pass by each other in a hallway two students bump into each other in a crowded subway car two students bump into each other in a crowded subway car many students pass from a crowded room into an empty hallway.
Answers
Many students leaving a crowded room and entering a vacant hallway could serve as a model of diffusion (option D).
The transfer of molecules from a location of higher concentration to a region of lower concentration is referred to as diffusion. Many students leaving a crowded room and entering a vacant hallway could serve as a model of diffusion (option D). A specific event or circumstance is described or shown using a model. The area with higher concentration in this instance is the packed room. The area with lower concentration is the unoccupied hallway. The students are the molecules. Diffusion is also implied by their transition from the busy room to the empty hallway.
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Describe why a bowling ball and a baseball dropped off of a cliff at the same time would land at different times, but they would land at the same time in a vacuum.
Answers
If the force exerted by the intern is doubled and the distance is haived, does the work done by the intern increase, decrease, or remain the same.I want the answer asap
Answers
Answer:
The work remains the same
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Velocity is Group of answer choices Q/(M x P) and increases if dollars are exchanged less frequently. Q/(M x P) and increases if dollars are exchanged more frequently. (P x Q)/M and increases if dollars are exchanged less frequently. (P x Y)/M and increases if dollars are exchanged more frequently.
Answers
Correct option is D. (P x Y)/M and increases if dollars are exchanged more frequently.
The Quantity of theory of money states:
M * V = P * Y
Where,
M = Money supply
V = Velocity of money exchange
P = The price level
Y = Real GDP
- By re-arranging the formula and solving for "V" we have:
V = P × Y / M
- The expression on right hand side increases if exchange of dollars increases.
What is Quantity theory of money?Monetary economics is a branch of economics that studies various money theories. The quantity theory of money is one of the primary research areas for this branch of economics (QTM). According to the quantity theory of money, the general price level of goods and services in an economy is proportional to the money supply.
While this theory was first proposed by Polish mathematician Nicolaus Copernicus in 1517, it was popularized later by economists Milton Friedman and Anna Schwartz following the 1963 publication of their book, "A Monetary History of the United States, 1867-1960."
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What is the purpose of the Archimedes screw in at least 3 sentences.
Answers
The purpose of Archimedes screw is to lift water to a higher point than the source of water.
Archimedes screw is used to lift water from one location to another.Archimedes screw can be used in sewage treatment plantsArchimedes screw can be used to generate electricity.In an Archimedes screw a helical screw is enclosed in a tube. So water entering the tube is trapped in the first pocket. As the screw turns, the water trapped in the first pocket moves up to the next pocket and a new scoop of water enters the first pocket. As the screw keeps turning the water gets risen to a higher level than the initial level.
Therefore, the purpose of Archimedes screw is to lift water to a higher point than the source of water.
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What is it?
The Archimedes Screw allows people to draw water uphill, and this was made over 2,000 years ago! This simple invention had huge implications and it has been used on everything from irrigation to bilge pumps on ships.
How is it used today?
Humans still use this device today for many different reasons. As well as being able to move water uphill, it's also used in the hydroelectric industry where the design is reversed. In other words, water flows downward through the screw, tuning it, and generating electricity.
In addition, the screw pump is used today in modern medicine to maintain steady blood flow within patients who have acute heart failure.
An electromagnetic wave transfers energy as it travels. During this process, what is the relationship between the magnetic and electric fields along its path?
Answers
Answer: A I just got it wrong because of the other person.
Explanation:
The electromagnetic waves are those waves that move through space and carry electromagnetic radiant energy. They include radio waves and microwaves. and many more.
During the transfer of energy, they are the sinusoidal fashion of movement that they are perpendicular to each other in the direction of wave motion. Show synchronized oscillations.Hence the option A is correct.
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How many atoms are there in 0,23 g Na?
Answers
Answer:
There are 6.02*10^23 atoms in each mole (Avagadro no.) That is x moles * avagadro no. According to that, in 23 grams of sodium we have 6.02*10^23 atoms of Na.
Explanation:
TRUE/FALSE. a recently discovered extrasolar planet appears to be rockier and denser than earth. it is 16 times as massive as earth, but its diameter is only twice that of earth.
Answers
The acceleration of free fall on the planet is given by 39.2 m/s².
What is the acceleration of free fall?The acceleration of free fall is the acceleration at which a body falling freely experiences the gravitational pull of a single planet. It is also known as a gravitational acceleration.
Value of the acceleration of free fall on earth is 9.8 m/s².
The formula of acceleration of free fall on any planet is given by:
g₁ = GM/R²
As the extrasolar planet appears to be rockier and denser than earth. it is 16 times as massive as earth, but its diameter is only twice that of earth, the acceleration of free fall on any planet is given by:
g₁ = GM/R² = 16GMe/(2Re)² = 4 GMe/Re = 4g = 4× 9.8 m/s² = 39.2 m/s² .
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Q4/ Check the result (MCQ) of the following output
1. By using cyclic exclusive-OR checksum find the final check sum of the word (110011) using right rotation of the six bits,
a. 101010
b, 111111
c. 000001
d, 000000
2. Something appears to be wrong, according to a compiler.
A debugging
B. linker.
C. editing
D. warning
3 The method through which a system directs, regulates, or commands itself in PLC.
A) Open-loop
B) Close-loop
C) Both A and D
D)Control system
Answers
1) The final check sum of the word (110011) using right rotation of the six bits by using cyclic exclusive-OR checksum is c. 000001. Hence, the correct option is c. 000001.
2) According to a compiler, something appears to be wrong, in the form of a warning. Therefore, the correct option is D. warning.
3) The method through which a system directs, regulates, or commands itself in PLC is Close-loop. Therefore, the correct option is B. Close-loop.
The result (MCQ) of the following output are as follows:
1. By using cyclic exclusive-OR checksum find the final check sum of the word (110011) using right rotation of the six bits,The final check sum of the word (110011) using right rotation of the six bits by using cyclic exclusive-OR checksum is c. 000001. Hence, the correct option is c. 000001.
2. Something appears to be wrong, according to a compiler.According to a compiler, something appears to be wrong, in the form of a warning. Therefore, the correct option is D. warning.
3 The method through which a system directs, regulates, or commands itself in PLC. The method through which a system directs, regulates, or commands itself in PLC is Close-loop. Therefore, the correct option is B. Close-loop.
So, the correct answer to question 1,2 and 3 are C, D, and B respectively.
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Which information is needed to determine the speed of an object?
OA. the weight of the object and the distance it travels
OB. the pull of gravity on the object and the amount of time it travels
OC. the inertia of the object and the amount of force that is pushing it
OD, the distance the object travels and the time it takes to travel that distance
Answers
Answer:
C: the inertia of the object and the amount of force that is pushing it.
HELP PLEASE WITH PUTTING science DEFINITION IN THE RIGHT PLACE
Answers
1. dependant variable
2. graph
3. model
4. experiment
6. scientific law
9. hypothesis
11. independent variable
12. theory
14. volume
15. society
If the ratio of numbers of turns in secondary to primary coil is 1:4. calculate teh secondary voltage where primary voltage is 220v
Answers
Answer:
Ns/Np=1/4
Vs=?
Vp=220V
Ns/Np=Vs/Vp
Vs=Ns/NpxVp=1/4x220=55V
Explanation:
convert 10095 mm to pm
Answers
Answer:
1.01 × 1013 picometres
Explanation:
multiply the length value by 1e+9
two resistors, a and b, are connected in series to a 9 v battery. the first resistor, resistor a, has a voltage of 6 v across it. which resistor has the largest resistance?
Answers
To find the resistor with the largest resistance, let's use Ohm's law formula V = IR. where V is the voltage, I is the current, and R is the resistance. The resistor A has the largest resistance. The correct answer is resistor A.
We are given that two resistors, A and B, are connected in series to a 9 V battery. Also, the first resistor, A, has a voltage of 6 V across it. This means that the voltage across resistor B is 9 V - 6 V = 3 V.
Now, let's find the resistance of resistor A using Ohm's law:
R = V / I
where V = 6 V and I is the same as the current flowing through resistor B since they are connected in series. Let's assume the current is I.
Therefore,
Ra = 6 V / I
Now, let's find the resistance of resistor B using Ohm's law:
R = V / I
where V = 3 V and I is the current flowing through both resistors in series.
Therefore,
Rb = 3 V / I
We are to find which resistor has the largest resistance.
This means we should compare Ra and Rb.
Ra = 6 V / I
Rb = 3 V / I
To compare the two resistances, we can simplify them as follows:
Ra = 6 / I
Rb = 3 / I
We can see that Ra is twice the value of Rb.
Therefore, resistor A has the largest resistance. Answer: Resistor A
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If a ball is given a push so that it has an initial velocity of 6 m/s down a certain inclined plane, then the distance it has rolled after t seconds is given by the following equation s(t) = 6t + 5t2 (a) Find the velocity after 2 seconds. m/s (b) How long does it take for the velocity to reach 40 m/s? (Round your answer to two decimal places.)
Answers
The velocity after 2 seconds is 26 m/s. It takes 11.50 seconds to reach a velocity of 40m/s.
Given the equation s(t) = 6t + 5t²
Let's find the velocity after 2 seconds.
(a) Velocity = (ds)/(dt)
Differentiating s(t) with respect to t, we get; ds(t) / dt = 6 + 10t
At t = 2,ds(t) / dt = 6 + 10t = 6 + 10(2) = 26m/s
Therefore, the velocity after 2 seconds is 26 m/s.
(b) We are to find how long it takes for the velocity to reach 40m/s. We know that the initial velocity of the ball, u = 6m/s. Acceleration = gsinθ = 9.81 x sin (angle of inclination) = 9.81 x 0.3 = 2.943 m/s²From the first equation of motion, v = u + at
We know v = 40m/s, u = 6m/s, a = 2.943m/s² and t is what we are to find, hence the equation becomes;40 = 6 + 2.943(t)t = (40 - 6) / 2.943t = 11.50s
Therefore, it takes 11.50 seconds to reach a velocity of 40m/s.
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how long will it take to go in minutes 150 km traveling at 50km/hr?
Answers
Given:
• Distance = 150 km
,• Speed = 50 km/hr
Let's find the time it will take to cover the distance in minutes.
To find the distance, apply the formula:
\(time=\frac{distance}{speed}\)Thus, we have:
\(\text{time}=\frac{150}{50}=3\text{ hours}\)The time in hours is 3 hours.
To convert the time from hours to minutes, we have:
60 minutes = 1 hour
3 hours = 3 x 60 = 180 minutes
Therefore, it time in minutes is 180 minutes.
ANSWER:
180 minutes
d) The plastic tube gains a charge of 4.3 mC.
The energy stored on the tube is 3.7 J.
Calculate the voltage between the plastic tube and the metal mast.
Answers
0.8604651 Volts are present between the metal mast and the plastic tube. An electrical or electronic circuit's voltage, measured in volts, is the difference in electrical potential between two points.
Voltage is a measurement of what?An electrical or electronic circuit's voltage, measured in volts, is the difference in electrical potential between two points. It gauges how much power an electric field could potentially exert to generate current in an electrical conductor.An electrical circuit's power source exerts pressure known as voltage on charged electrons (current), causing them to flow through a conducting loop and perform tasks like lighting a lamp. Voltage is measured in volts and is simply equal to pressure (V).The electric potential difference between two places is measured in terms of voltage. Simple electric charge flow rate is known as current.Explanation:
Voltage = energy/charge
= 3.7/4.3
= 0.8604651.
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for each of the following cases, indicate whether the work done on the second object in each example will have a positive or a negative value. a. the road exerts a friction force on a speeding car skidding to a stop. b. a rope exerts a force on a bucket as the bucket is raised up a well. c. air exerts a force on a parachute as the parachutist falls to earth.
Answers
a) The work done by frictional force on the skidding car is negative.
b) Positive work is accomplished by the rope's force on the bucket.
c) The work done by the force exerted by the air on the parachutist is negative.
W = F * d = F d cos gives the amount of work done.
where, force is F and displacement is d
a) The road exerts a frictional force on a speeding car skidding to a stop.
In this instance, the frictional force F works in opposition to the direction of motion and opposes the motion itself. The angle between displacement and frictional force, which is in the opposite direction and equals 180°.
So, the work done by the frictional force on the skidding car is negative.
b) A bucket is being raised up a well while being pulled by a rope.
The bucket is raised upward by the rope's upward force F. The force and displacement are in the same direction, and their angle is equal to zero.
So, the work done by the force exerted by the rope on the bucket is positive.
c) As a parachutist falls to the ground, air pulls on a parachute.
The air opposes the parachutist's descent with a force F as they both plummet to the ground under the influence of gravity. The force exerted by the air is in a direction opposite to the motion of the parachutist. The force of air and displacement have an angle of 180 degrees.
So, the work done by the force F exerted by the air on the parachutist is negative.
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Convection can occur in which two substances?
wood and air
ice and wood
water and ice
air and water
Answers
After considering all the given options we come to the conclusion that the required answer to the given question is Option D.
Convection is generally known as the property that aids the transfer of thermal energy through the movement of particles from one specified area to another. It typically seen to take place in fluids .
When we talk about convection, particles that have a lot of heat energy inside a liquid or gas dominate over the particles that have less heat energy by taking their dedicated space. Then , convection can occur in air and water.
some famous examples of convection are:
Boiling water
Land and sea breeze
Air conditioner
Radiator
Refrigerator
Hot air popper
Hot air balloon
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Both men are pushing on a refrigerator with a force of 100N. What is the net force of the refrigerator?
Answers
Answer:
400n
Explanation:
Hope this helps:)
See The Picture And Anwser
Answers
Answer:
\(from \: first \: equation \: of \: motion \\ v = u + at \\ a = \frac{v - u}{t} \\ a = \frac{15 - 24}{12} \\ a = - 0.75 \: {ms}^{ - 2} \)
Answer:
a = -0.75 m/s^-2
What is the converse of the statement "No pilots are mechanics"?
a. No mechanics are pilots.
b. Some mechanics are pilots.
c. All pilots are mechanics.
d. None of these
Answers
The converse of the statement "No pilots are mechanics" is No mechanics are pilots.
Hence, the correct option is A.
The converse of a statement switches the subject and the predicate and negates both. In the original statement, the subject is "pilots" and the predicate is "mechanics."
The original statement states that there is no overlap between pilots and mechanics. In the converse statement, the subject becomes "mechanics" and the predicate becomes "pilots," and it still states that there is no overlap between the two groups.
Therefore, The converse of the statement "No pilots are mechanics" is No mechanics are pilots.
Hence, the correct option is A.
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how mny hours does it takes you to travel by foot from australia to fiji
Answers
Answer:
About 22 hours in flight time.
Explanation:
It wouldn't give me the walking time.
Hope I helped ya.
< Sarah >
Answer:
Hmm idk u was tryna take the trip or sum
Explanation:
What is the average speed of an object that travels 6 meters in 2 seconds and then travels 3 meters in 1 second?
Answers
Answer:
3 m/s
Explanation:
Average Speed = \(\frac{Total Distance}{Total time}\)
Plug in the numbers, it will be (6m + 3m) divided by (2s + 1s), which is 9m/3s, which equals to 3m/s.
The Fungi kingdom does not include _____.
molds
bacteria
yeast
mushrooms
Answers
The Fungi kingdom does not include bacteria. Option B is correct.
Bacteria belong to a separate kingdom called the Monera, which includes all unicellular prokaryotic organisms. The Fungi kingdom includes organisms such as molds, yeast, and mushrooms, which are eukaryotic organisms that obtain nutrients by absorbing organic matter from other organisms in their environment.
Fungi obtain nutrients by absorbing organic matter from their environment. They are heterotrophic organisms, which means that they do not produce their own food through photosynthesis like plants. Instead, they secrete enzymes that break down complex organic compounds in their environment into smaller molecules that can be absorbed through their cell walls.
Fungi play important roles in many ecosystems. They are essential decomposers, breaking down dead organic matter and recycling nutrients back into the environment. Some fungi also form mutualistic relationships with other organisms, such as mycorrhizal associations with plant roots, where they help plants absorb nutrients from the soil. Option B is correct.
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Which of the following is a property of a transverse wave?
A. It needs a medium to travel.
B. It travels up and down.
C. They are visible to the nake eye.
D. It travels by compressing particles.
Answers
The correct answer is option B. It travels up and down. Transverse waves are characterized by the fact that they cause particles in the medium to move perpendicular to the direction of wave propagation.
What are transverse waves?Transverse waves are a type of wave that causes the particles of the medium to move up and down or side to side as the wave passes through them.
The other options are not right because:
Option A: It describes a property of a longitudinal wave, not a transverse wave. Longitudinal waves do need a medium to travel, whereas transverse waves can travel through a vacuum, such as light waves.Option C: It is not necessarily true that transverse waves are visible to the unaided eye. Some transverse waves, such as light waves, are visible, but others, such as radio waves, are not.Option D: It describes a property of a longitudinal wave, not a transverse wave. Longitudinal waves travel by compressing particles, whereas transverse waves travel by perpendicular vibrations.Learn more about transverse waves here:
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An object moves at 43m/s with 12018.5J of kinetic energy. Determine the mass of the object.
Answers
Therefore m=2(kinetic energy)/ squared v
M=2(12018.5J)/43x43
M=24,037J/1849m/s
M=13kg
True/False? only hard scientists have the necessary skill set to respond to moments of crisis
Answers
The statement that only hard scientists has the essential skill set to respond in times of crisis is True.
What does highly essential mean?adjective. absolutely necessary; indispensable: Discipline is essential in an army. pertaining to or constituting the essence of a thing. noting or containing an essence of a plant, drug, etc. being such by its very nature or in the highest sense natural; spontaneous: essential happiness.
What does essential nature mean?meanings of essential and nature all the animals, plants, rocks, etc. in the world and all the features, forces, and processes that happen or exist independently of people, such as the weather, the sea, mountains, the production of young animals or plants, See more at nature.
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a) The velocity of a moving body is t2 - t metres per second after a time of t seconds. Find the displacement of the body at the end of 12 seconds if the initial velocity is 0 metres per second.
Answers
Explanation:
The integral of a velocity versus time function is a displacement versus time function
So we integrate,
\( {t}^{2} - t\)
The integral of that is
\( \frac{1}{3} {t}^{3} - \frac{ {t}^{2} }{2} \)
Plug in 12 for t,
\( \frac{1}{3} (12 {}^{3} ) - \frac{12 {}^{2} }{2} \)
\(576 - 72 = 504\)
So the displacement is 504 meters to the right.
vf = 12² - 12 = 132 m/s
a = vf' = 2t-1
at t =12 s,
a = 2(12)-1 = 23 m/s²
vf²=vi²+2ad (vi=initial velocity=0)
vf²=2ad
132² = 2 x 23 x d
d = 378.78 m