if a planet is in a circular orbit 1 a.u. away from a black hole of 1 solar mass, it will...
Answers
If a planet is in a circular orbit 1 astronomical unit (AU) away from a black hole of 1 solar mass, it will experience a strong gravitational force due to the black hole's massive gravitational field.
The gravitational force exerted by the black hole on the planet will be balanced by the centrifugal force required to keep the planet in its circular orbit.
The speed of the planet in this orbit can be calculated using the formula:
v = √(GM/r)
where G is the gravitational constant, M is the mass of the black hole, and r is the distance of the planet from the black hole.
Plugging in the values, we get:
v = √((6.67 × 10^-11 m^3/kg s^2) × (1.99 × 10^30 kg) / (1.5 × 10^11 m))
v = 29.78 km/s
Therefore, the planet in this scenario would be orbiting the black hole at a speed of approximately 29.78 km/s.
It is important to note that at this distance, the planet is outside the event horizon of the black hole and is not in immediate danger of being swallowed by the black hole.
However, the strong gravitational field of the black hole will affect the planet's orbit and may cause it to process over time.
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Related Questions
a convex mirror has a focal length of -12 cm. a lightbulb with diameter of 6 cm is placed 60 cm from the mirror
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Here the focal length of the convex mirror as -12 cm, a light bulb with a diameter of 6 cm is placed 60 cm from the mirror. Hence, the image distance is -60 cm, and the image height is 6 cm.
To find the image distance and height, we will use the mirror formula for a convex mirror, which is given as follows;1/f = 1/v + 1/u. Where, f = focal length of the convex mirror;
v = the image distance;
u = the object distance
If the object distance is positive, it means the object is placed in front of the mirror, and if it is negative, it means the object is placed behind the mirror. The focal length of a convex mirror is always negative, as given above.
Therefore, u = -60 cm and f = -12 cm.
Plugging in the values in the mirror formula, we get:1/-12 = 1/v + 1/-60=> -5/60 = 1/v - (1/60) => -5/60 = (60 - v)/60=> v = -300/5= -60 cm
The image distance is -60 cm, which means the image is virtual and erect. The negative sign indicates that the image is formed behind the mirror.
To find the image height, we use the magnification formula:
m = -v/u= -(-60)/(-60)= 1
The magnification is 1, which means the image is of the same size as the object. The height of the light bulb is 6 cm, so the height of the image will also be 6 cm.
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In the first three minutes of melting the ice, the water only rose 2.2 C. Calculate the rise per minute.
Answers
Answer:
0.7333... (recurring)
Explanation:
If we know that in the first three minutes the water rose 2.2, in order to find the rise per minute all we need to do is divide 2.2 by 3. This will give us the value of just one minute!
2.2 ÷ 3 = 0.7333... (recurring)FUN FACT:
In reality, the water's temperatures would not rise in exact measurements per minute and it could vary through time.
Hope this helps, have a lovely day! :)
a person with a mass of 97kg is accelerated at a rate of 1.4m/s2, what’s the force acting upon them?
Answers
Answer:
135.8 N
Explanation:
You multiply the mass by the acceleration then you get your answer
A force of 6.0 newtons produces a torque of 27 Nm. What is the shortest lever arm that can produce this torque?
Answers
Answer:
3.6
Explanation:
Bc its 27nm. And u need to X the answer
A 15.18 Kg box is at rest on a table. What is the applied force needed to just overcome the force of static friction if the coefficient of friction is 0.309? Round your answer to 2 decimal places.A 15.18 Kg box is at rest on a table. What is the applied force needed to just overcome the force of static friction if the coefficient of friction is 0.309? Round your answer to 2 decimal places.
Answers
Assuming the box is sitting on a flat surface, static friction would have a maximum magnitude of
0.309mg = 0.309 (15.18 kg) (9.80 m/s²) ≈ 45.97 N
so the applied force should have at least this magnitude.
A bullet has a speed of 500 m/s as it leaves a rifle. If it is fired horizontally from a cliff 12m above a lake, how far does the bullet travel before striking the water?
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what is the balance equation for the chemical equation h2o+so2=h2o+s
Answers
Answer:
2H₂S + SO₂ —> 2H₂O + 3S
Explanation:
From the question given above, the following equation were obtained:
H₂S + SO₂ —> H₂O + S
The equation can be balance as illustrated below:
H₂S + SO₂ —> H₂O + S
There are 2 atoms of O on the left side and 1 atom on the right side it can be balance by writing 2 before H₂O as shown below:
H₂S + SO₂ —> 2H₂O + S
There are 2 atoms of H on the left side and 4 atoms on the right side. It can be balance by writing 2 before H₂S as shown below:
2H₂S + SO₂ —> 2H₂O + S
There are 3 atoms of S on the left side and 1 atom on the right side. It can be balance by writing 3 before S as shown below:
2H₂S + SO₂ —> 2H₂O + 3S
Now, the equation is balanced.!
Jermaine runs exactly 2 laps around a 400 meter track. At the beginning of her run the clock read 3:02:00 PM. At the end her clock read 3:04:45 PM. Find the distance (d) the person traveled. calculate the speed using distance and total time. find the displacement. calculate the velocity. HELP
Answers
Explanation:
Given parameters:
Jermaine runs exactly 2 laps around a 400m track
Start time = 3:02:00PM
End time = 3:04:45PM
Unknown:
Distance traveled = ?
Speed = ?
Displacement = ?
Velocity = ?
Solution:
To solve this problem, we need to find the distance and time first;
Distance = 2 x 400 = 800m
Time taken = 3:04:45PM - 3:02:00PM = 165s
Speed = \(\frac{distance}{time}\) = \(\frac{800}{165 }\) = 4.85m/s
The velocity of the body is 0m/s and so is the displacement.
This is because the starting and finishing position of the Jermaine is the same.
A compass needle normally points toward earth’s magnetic pole, which is near the north pole. Which best explains why the needle moves away from the pole when it comes close to a current-carrying wire?.
Answers
Answer:
Magnetism surrounding the wire draws the needle toward the wire.
Explanation:
The wire itself has it's own magnetism also, that's why, if you put a compass near it, then the compass will get confused and point the wrong direction.
Thanks!
MiniMeteorologist
in the csma protocol the stations refrain from transmission whenever they sense the channel busy. how g can then collision happen at all? a. the typical reason for collision is that the channel attenuation weakens the propagating signal, and if its energy drops below a certain level, then the stations may confuse it with noise. b. collision is caused by propagation delay in csma. a station may sense the channel idle, even if another station has started transmission, but the signal has not reached yet the other station. c. theoretically, collision cannot happen in this system. the fact that it occasionally still happens is due to imperfect equipment, which may not sense the channel occupancy with 100% reliability.
Answers
Network administrators must ensure that their equipment is up-to-date and working correctly to minimize the risk of collisions in their networks.
Although the CSMA protocol requires stations to refrain from transmission when they sense the channel busy, collisions can still occur due to various reasons.
One reason is that the channel attenuation can weaken the signal to the point where stations may mistake it for noise, leading to collisions.
Another reason is the propagation delay, where a station may sense the channel idle even if another station has already started transmission, but the signal has not reached the other station yet.
In theory, collision should not happen in the CSMA protocol. However, in practice, it can still occur due to imperfect equipment, which may not sense the channel occupancy with 100% reliability. Therefore, network administrators must ensure that their equipment is up-to-date and working correctly to minimize the risk of collisions in their networks.
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4.Two carts, A and B, sit in front of you. They look identical, and you are told that they are made of the same material. Cart A is at rest on an air track and cart B is given a constant velocity directed to the right toward Cart A on the air track. Cart B collides with cart A elastically. After the elastic collision, both carts move to the right, the velocity of cart B being smaller than what it was before the collision. What can you conclude based on only what you have observed
Answers
Answer:
Cart B loses some of its initial kinetic energy and cart A gains kinetic energy.
Explanation:
Since both cart A and cart B have identical masses, and cart B moves with a smaller velocity after the collision than it was moving with before the collision, and also, the collision is elastic. It implies that the initial kinetic energy of cart B equals the final kinetic energy of cart A and cart B after the collision.
Since the initial kinetic energy of cart B is shared between cart A and cart B and cart B moves with lesser velocity after the collision, it implies that cart B has a smaller kinetic energy than its initial kinetic energy before the collision.
And also, since cart A is initially at rest and moves to the right after the collision, it gains kinetic energy.
Thus, cart A has a higher final kinetic energy after the collision. Also, cart A has a smaller kinetic energy after the collision than the initial kinetic energy of cart B, since it is the difference between cart B's initial and final kinetic energies.
So, from our observation, we conclude that cart B loses some of its kinetic energy and cart A gains kinetic energy.
A balance between gravity and bouyancy is called
Answers
Answer:
I believe it is isostasy
Explanation:
Does the treadline equation intersect with the density you determined for pure water in exp 1a using a buret?
Answers
No, the trendline equation does not necessarily intersect with the density you determined for pure water in experiment 1a using a buret.
The trendline equation, derived from a regression analysis, represents the overall trend or relationship between two variables in a data set. It provides a mathematical model that predicts or estimates the value of the dependent variable based on the independent variable(s). On the other hand, the density of pure water determined in experiment 1a using a buret is a specific value obtained through direct measurement. The density of pure water is typically known to be 1 g/mL or 1 g/cm³ at room temperature and atmospheric pressure.
While the trendline equation may describe the general trend in the data and can be used to make predictions, it does not necessarily intersect with the specific density value determined experimentally. This is because the trendline equation is based on statistical analysis and takes into account the overall relationship between the variables, whereas the experimentally determined density is a specific measurement. The trendline equation provides an estimation or prediction of density based on the independent variable(s) being studied, but it is not guaranteed to match the exact value obtained in the experiment. Therefore, the intersection of the trendline equation with the density determined for pure water in experiment 1a using a buret is not a necessary or expected outcome.
In conclusion, the trendline equation and the density determined for pure water in experiment 1a using a buret are two different concepts. The trendline equation represents the general trend in the data and provides an estimation or prediction of density, while the experimentally determined density is a specific value obtained through direct measurement. The intersection between the trendline equation and the specific density value is not a necessary or expected outcome.
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In which situation would the use of a vector quantity be most appropriate? (1 point)
determining the net force that is acting on an object
determining the high and low temperatures on any given day
determining whether it takes more time to melt ice or to melt butter
determining whether a van is moving faster than the speed limit
Answers
The situation that would be most appropriate to the use a vector quantity is determining the net force that is acting on an object.
option A is the correct answer.
What is vector quantity?Vector quantities are the physical quantities characterized by the presence of both magnitude as well as direction.
Examples of vector quantities include the following;
Displacement, force, torque, momentum, acceleration, velocity, etcScalar quantities, are those physical quantities that have only magnitude without direction. Example is temperature.
Thus, the situation that would be most appropriate to the use a vector quantity is the situation that needs to be described by both magnitude and direction.
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HELP ASAP! Will make BRAINLEST
Which two options are reasons that electromagnetic waves can be used effectively in communication devices?
A. The speed at which they carry information can be varied.
B. They require no wires to carry information
C. Any type of electromagnetic wave can be used for communication.
D. They can travel through either air or other types of matter.
Answers
Answer:
B and D
Explanation:
Did the quiz
Electromagnetic waves require no wires to carry information and can travel through either air or other types of matter. Therefore, options (B) and (D) are correct.
What are electromagnetic waves?Electromagnetic radiations are produced when an electric field comes in contact with the magnetic field. Electromagnetic waves are the composition of oscillating electric as well as magnetic fields.
Infrared radiation is used in security cameras and used for night vision. UV rays are useful to detect forged banknotes as the real banknotes don’t turn fluorescent under UV light.
Electromagnetic radiation can travel energy in a vacuum or air. Electromagnetic waves play a vital role in today's communication technology. Electromagnetic waves are specially used in RADARS to detect aircraft in the earth's atmosphere.
Radio waves, microwaves, infrared (IR), and visible light can be used for communication. Radio waves are used to transmit information on television and radio programs. Microwaves are used to transmit satellites, mobile phones, and television.
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When the sun and moon work together ____________ are formed on Earth.
a
Frankentides
b
Neap Tides
c
Spring Tides
d
Dark Tides
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Answer:
C. Spring Tides is the answer.
The old force goes from 10N to 2N while you double each of the masses. What happened to displacement?
Answers
Answer:
5n
Explanation:
10n divided by 2n is 5n
The Shown Beam Is Subjected To A Triangular Load Distribution. Determine The Intensity Of The Load At Point C. (Hint Us
Answers
The intensity of the load at point C can be determined by analyzing the triangular load distribution.
To determine the intensity of the load at point C, we need to consider the characteristics of the triangular load distribution. A triangular load distribution is characterized by a linear increase or decrease in load magnitude over a given span. In this case, the load is assumed to be distributed in a triangular shape along the beam.
To find the intensity of the load at point C, we need to calculate the slope of the triangular load distribution. The slope represents the rate of change of load intensity with respect to the distance along the beam. By finding the slope and evaluating it at point C, we can determine the intensity of the load at that specific location.
The slope of the triangular load distribution can be obtained by dividing the change in load magnitude by the corresponding change in distance. This can be expressed as the ratio of the difference between the maximum load and the minimum load to the span length of the triangular distribution.
Once we have the slope, we can determine the intensity of the load at point C by multiplying the slope by the distance of point C from the starting point of the triangular distribution. This will give us the load intensity at that specific location.
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In going from one city to another, a car whose driver tends to get lost goes 30km North, 50km west, and 20km southeast Approximately how far apart are the cities?
Answers
ANSWER:
39.21 km
STEP-BY-STEP EXPLANATION:
To determine the answer we track each move just like this:
Coordinates at the start (city A): (0, 0)
Coordinates after going 30 km north: (0, 30)
Coordinates after going 50 km west: (-50, 30)
Southeast is a move down and to the right of 45°, so we calculate at each coordinate, like this:
\(\begin{gathered} d_e=20\cdot\cos45\degree=10\sqrt{2} \\ \\ d_s=20\cdot\sin45\operatorname{\degree}=10\sqrt{2} \\ \\ \text{ Therefore:} \\ \\ x=-50+10\sqrt{2}=-35.86 \\ \\ y=30-10\sqrt{2}=15.86 \\ \\ \text{ Coordinates at the start \lparen city B\rparen: \lparen-35.86, 15.86\rparen} \end{gathered}\)We calculate the distance between both points as follows:
\(\begin{gathered} d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2} \\ \\ \text{ we replacing} \\ \\ d=\sqrt{\left(-35.86-0\right)^2+\left(15.86-0\right)^2} \\ \\ d=\sqrt{1285.9396+251.5396}=\sqrt{1537.4792} \\ \\ d=39.21\text{ km} \end{gathered}\)The distance between both cities is 39.21 km
Explain your thinking. What definition, rule, or reasoning did you use to decide
whether something is a solid?
Answers
Answer:
Explanation:
A Solid is one of the three main states of matter. By definition a solid is something whose molecules are so densely packed together that it allows it to keep its shape. Therefore if the item has a definite shape that does not change on it's own it is a solid. As opposed to a liquid which will take and fill the shape of it's container.
a wiggle in both space and time is a a) vibration. b) wave. c) both of these d)neither of these
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The correct answer is option (c) both of these.A wiggle in both space and time is a wave. Let's discuss it in more detail.Wave:A wave is a disturbance that travels through a medium. Waves transport energy without transporting mass. This is the key characteristic of waves.
Wave motion is caused by a disturbance that causes a particle or mass to oscillate about its normal position, generating a disturbance that propagates through space. Sound waves, light waves, radio waves, and water waves are all examples of waves.Vibration:A vibration is a back-and-forth or oscillatory motion of an object or a medium in response to a disturbance. A vibration is the effect of a wave or waves that propagate through a medium. It is a rapid motion or a quick movement of a mass or particle. Vibration occurs when an object is moved back and forth or vibrates. This can be felt as a sensation in the body, and it can be measured with a tool or device. So, both of these terms are related to each other.
Therefore, a wiggle in both space and time is a wave because wave motion is caused by a disturbance that causes a particle or mass to oscillate about its normal position, generating a disturbance that propagates through space. Also, the vibration is the effect of a wave or waves that propagate through a medium. So, the correct option is (c) both of these.
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What role is played by physics in communication
Answers
Explanation:
physics allow us to understand the electromagnetic radiation we used to transmit data with fibre optics and satellites and to build computers that interpret those signals and transmit data on the internet
What definition describes cognitive behavior therapy?
A.
passive concentration on various bodily sensations
B.
thought correction to reduce stress
C.
progressive muscle relaxation, working progressively downwards
D.
inhaling through the nostrils and exhaling through the mouth
Answers
The definition describes cognitive behavior therapy (B).thought correction to reduce stress is correct option.
The goal of cognitive behaviour therapy (CBT), a type of psychotherapy that aims to promote overall mental health and reduce stress, is to rectify one's thoughts. It aids people in recognizing and altering unfavorable thought and behaviour patterns that contribute to their emotional and psychological discomfort. The foundation of cognitive behavioral therapy (CBT) is the notion that our ideas, feelings, and behaviours are interrelated, and that altering one of these elements can result in favorable changes in the others.
Therefore, the correct option is (B).
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What is the physics definition of work? How is work calculated? How would you calculate the amount of work done in a slapshot.
Answers
Answer:
1) Work is a measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement. 2) Work is calculated through joules. 3) It's possible to calculate work by multiplying the amount of force applied by the distance that the force is applied. If we know the amount of force the stick applies to the puck and the distance that the stick is applying the force to the puck, we can figure out the amount of work done.
Explanation:
Hope this helped!- Nya~ :3
Compare two electrons meeting to tossing a ball up in the air.
Answers
Answer:
Two electrons receive treacherous and formidable power when met while the atoms in the ball move slowly around with great space.
Explanation:
hope this helped!
How dose a scientific theory differ from a hypothesis?
Answers
Answer:This is the Difference Between a Hypothesis and a Theory. ... In scientific reasoning, a hypothesis is an assumption made before any research has been completed for the sake of testing. A theory on the other hand is a principle set to explain phenomena already supported by data.
Explanation:
in of the Solar System
When the ancient Greeks looked at the night sky they noticed that some points of light seem to wander" in the sky
Which term do we use for these wanderers today?
nebulae
moons
stars
1 planets
2 moons
3 stars
4 Planets
Answers
Answer:
stars #3
Explanation:
they didn't know it was stars
Which of newton's three laws is the hardest to describe or explain when viewing common occurrences?
Answers
Newton's second law is the hardest to describe as it is about momentum (F = ma), and a lot of people don't know the concept of momentum.
Newton's first law of motion:- every object moves in a straight line unless acted upon by a force.
Newton's 2nd law of motion:-the acceleration of an object is directly proportional to the net force exerted and inversely proportional to the item's mass. Newton's 2nd law is a quantitative description of the changes that a force can produce on the motion of a body. 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.
Newton's 3rd law of motion:- For every action, there's an equal and opposite reaction.
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if the father's radio is 132 km from the radio station, and the daughter is 115 m from home plate, who hears the home run first? (assume that there is no time delay between the baseball being hit and its sound being broadcast by the radio station. in addition, let the speed of sound in the stadium be 343
Answers
From the calculations done, it is observed that the father hears the home run first.
Radio waves are the electromagnetic waves. The velocity of these waves is given by,
c = d/t
where,
c is speed
d is distance
t is time
Time taken by the girl to hear the home run is given by the formula,
t₁ = d₁/vs
where,
vs is the velocity of sound
t₁ = 115/343 = 0.34 s
Time taken by the father to hear the home run is given as,
t₂ = d₂/c = (132 × 10³)/(3×10⁸) = 4.4 × 10⁻⁴ s
As t₁ > t₂, the father hears the home run first.
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what is the highest order dark fringe, , that is found in the diffraction pattern for light that has a wavelength of 561 nm and is incident on a single slit that is 1420 nm wide?
Answers
The highest order dark fringe for a 561 nm light incident on a 1420 nm wide slit is the 3rd order.
Diffraction occurs when light passes through a narrow opening or slit, causing the wave to bend and interfere with itself. The pattern of bright and dark fringes produced by this interference is called a diffraction pattern. The position of these fringes can be determined using the equation d sin θ = mλ, where d is the width of the slit, θ is the angle of diffraction, m is the order of the fringe, and λ is the wavelength of the light.
Using this equation, we can calculate that the 3rd order dark fringe corresponds to an angle of approximately 5.68 degrees for a 561 nm light incident on a 1420 nm wide slit. Therefore, the highest order dark fringe in this situation is the 3rd order.
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