Explanation:
using kinetic energy=½MV²
m=24kg
v=3.5m/s
½×24×3.5²=147J
Astronomers now think that there is a black hole with more than 4 million times the mass of our Sun at the center of our Galaxy? Roughly how large would the event horizon of such a supermassive black hole be? a. the size of our Moon b. about 4 light years across c. about 17 times the size of the Sun d. about the size of an atom (so much mass really compresses the event horizon) e. we can’t answer this question without knowing exactly what kind of stars were swallowed by the black hole
Given what we know about the astronomical units of space occupied by supermassive black holes, we can confirm that the event horizon in question is roughly 24million km across. Though no option given evaluates to this number, the closest is option c "about 17 times the size of the sun", which equates to the radius of the event horizon.
When comparing sizes, the universe can quickly make even the most massive object appear to be very small. The sun, which is large enough to make the earth look like a speck of dust in comparison, is roughly 700,000 km across. Though this is indeed a massive distance, it is only 1/35th the size of the event horizon in question.
The "Supermassive Black Hole" at the center of our galaxy is known as Saggitarius A. This black hole is said to be 4 million times the mass of our sun. Despite this, however, due to the highly compressed nature of black holes, it is only about 35 times larger than our sun. Option C comes close at 17 times larger but is only about half of what the event horizon for this black hole is.
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suppose that a white dwarf is gaining mass through accretion in a binary system. what happens if the mass someday reaches the 1.4 solar mass limit?
Answer:
Hey there
When a white dwarf reaches 1.4 solar masses it implodes and becomes a neutron star. this mass limit is known as the "Chandrasekhar limit". It occurs when electron degeneracy pressure (the force that keeps the star from collapsing) is no longer strong enough to hold up aggainsed gravity.
how does the amount of friction affect the sum of forces
Answer:
Newton's 2nd law states acceleration is proportional to the net force acting on an object. The net force is the vector sum of all the forces applied to the object. ... In this case the acceleration (slowing down) of the puck is proportional to the amount of friction.Explanation:
mark as brainliast7. When the sky diver jumped from the plane, two pieces of paper with the same mass fell out of his pocket. The first piece of paper was folded in half once, and the second piece of paper was folded in half twice. Which piece of paper will reach the ground first? Give a reason for your answer.
The one folded twice because when it's more compressed its has more gravity. Subscribe to DreamfanBG for support.
If two objects crash into each other, what happens? Are both objects affected? How?
Explanation:
In a collision between two objects, both objects experience forces that are equal in magnitude and opposite in direction
Which of the mathematical sign below would best complete the following statement?
Statement: 5cm______ km
A. >
B.<
C. =
PLS HELP AND NO LINKS
Answer:
B
Explanation:
option b stands for less down and cm is less than km
When the net force that acts on a hockey puck is 10 N, the puck accelerates at a rate of 50 m/s2. Determine the mass of the puck. (a) 0.2 kg (c) 5 kg (e) 50 kg (b) 1.0 kg (d) 10 kg
The correct answer is option A) 0.2 kg
How to find net force?The net force is the sum of all forces acting on an object. The net force can be calculated using Newton's second law, which states that F = ma, where: F is the net force. m is the mass of the object.
Given:
Force = 10N
a = 50 m/s
By using net force formula:
F = ma
m = 10 / 50 = 0.2 kg
What is the net force on this object?
The net force on an object is the combined effect (the sum) of all the pushing and pulling forces actually acting on the object. If the forces pushing or pulling on an object are not balanced (a net force acts) then the object will accelerate in the direction of the net force.
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What is electromagnetic radiation and what is it composed of?
Answer:
At the classical level, the electromagnetic radiation is composed of electric and magnetic fields oscillating in a plane perpendicular to the direction of propagation. At the quantum level, radiation is quantized in the form of massless particles of spin 1: photons
what element has an atomic number of 99?
Answer:
Einsteinium has 99 atomic number
Answer:
Just a cheerful teen willing to help,
Just a cheerful teen willing to help,stay salty!
Explanation:
Explanation: Einsteinium (Es), synthetic chemical element of the actinoid series of the periodic table, atomic number 99. Not occurring in nature, einsteinium (as the isotope einsteinium-253) was first produced by intense neutron irradiation of uranium-238 during the detonation of nuclear weapons.
is the following statement true or false? the light wave from a bulb is an example of a periodic wave.
Answer:
true
Explanation:
What is an effect of gravity?
A. An effect of gravity is to decrease the mass of people standing on the earth's surface.
B. An effect of gravity is to increase the mass of people standing on the earth's surface.
C. An effect of gravity is to attract people on the earth's surface towards the center of the earth.
D. An effect of gravity is to attract people on the earth's surface towards the earth's atmosphere.
Answer:
C. An effect of gravity is to attract people on the earth's surface towards the center of the earth.
Explanation:
The answer is not A. Gravity does not decrease the amount of matter you have.The answer is not B. Gravity does not increase mass either.The answer is not D. Gravity pulls you farther than just the earth's atmosphere.Which two forces operate over the longest distances?
A. Gravitational and weak nuclear
B. Electromagnetic and weak nuclear
C. Gravitational and strong nuclear
D. Electromagnetic and gravitational
Answer:
D Electromagnetic and gravitational
Consuming the right amount of calcium is necessary for strong bones.
true
false
Answer:
True
Explanation:
HELP PLEASE I KEEP ASKING THIS QUESTION BUT GET DIFFERENT ANSWERS EACH TIME!!!!!
Answer: a
The wagon appears as a red color because red light is reflected.
:)
A net force of magnitude 0.6 at on a body of mass 40g intially at rest. calculate the magnitude of the resulting acceleration
→ 0.6 N = 0.04 kg × a
→ 0.6 kg.m/s² ÷ 0.04 kg = a
→ 15 m/s² = a
Therefore, tha magnitude of resulting acceleration is 15 m/s².
An aeroplane cruises at normal speed. Upon fl ying into turbulent (unstable) air, it suddenly drops downwards vertically. Passengers in the aeroplane who are not wearing seat belts will A hit the seats in front of them. B hit the ceiling of the aeroplane. C be pushed against the back of their seats. D be pushed down into their seats.
Answer:
Your answer would be D. be pushed down into their seats.
Explanation:
You can think of it this way:
If you're not wearing a seat belt on an airplane that drops suddenly, in this case, vertically, which often happens with turbulence- you're the one at rest. You'll stay at rest as the plane (literally) drops out from under you.
If you're strapped in, the seat belt serves as an outside force acting on you, taking you with the plane as it drops and saving you from hitting the ceiling.
Always remember Newton's first law of motion: A body at rest will remain at rest unless an outside force acts on it.
what two factors determine how much kinetic energy an object has from its motion?
Answer: mass and speed.
Explanation: The two main factors that affect kinetic energy are mass and speed. Why? Because the motion of an object depends on how fast it's traveling.
Please help me please be correct.
Answer: A
Explanation: They would not be planting weeds or digging up the tree, the person on the left in the picture is pouring water on the tree implying that they are taking planting it.
A Person drops a pile of roof shingles from the top of a roof above the ground. If the time taken to reach the ground was 5 seconds, how high is the roof?
Correct answer get BRAINLIEST and please don’t answer if u don’t know
Answer:
The height of the roof is 4 meters high. Is this the measurement that I was supposed to answer with?
Explanation:
I ball is thrown straight up. At the top of its path, what is its acceleration?
0 m/s^2.
O 5 m/s^2
O 10 m/s^2
20 m/s^2.
2. A roller coaster is at the top of a 72 m hill and weighs 150 kg. The coaster (at this moment) has
energy
anarov
Answer:
it is going down down down down the hill it goes so the roller coaster will then be down to a 0 m
If the mass of both objects are doubled while the
distance between them is halved, how is the
gravitational force of attraction between them
effected?
Answer:
The force becomes 16 times what it is now.
Explanation:
The formula for gravitational force is
F = G * m1 * m2 / r^2
When you do what you have described, you are setting a stage that not even the USS Enterprise (Star Trek) can get out of. The increase is huge.
If you double m1 and m2 and don't do anything to r, you've already increased the force by 4 times. (2m1 * 2m2 = 4 * m1 * m2)
But you are not finished. If you 1/2 the distance, you are again increasing the Force by 4 times. 1 / (2r) ^2 = 1/ 4* r^2
Because this is in the denominator, the 1/4 is going to flip to the numerator.
So the total increase is going to be 4 * (4 * m1 * m2) = 16 * m1 * m2.
Think about what that means. If you were out golfing, your drives would be roughly 1/16 times as far as they are now. Also you would be lugging around 16 times your weight around the golf course. My feeling is that you would never finish 5 holes at that rate.
leah paid 42.90 for 5 gallons of gas what was the price per gallon of gas leah paid?
Answer:
the price per gallon of gas leah paid is 8.58
Explanation:
42.90/5=8.58
What is the chemical name of a greenhouse gas that contains carbon and oxygen?
Answer
: Carbon dioxide
Explanation:
katherine johnson’s skill in what field led to nasa’s first moon voyage?
How long it takes Earth to rotate on its axis?
Answer:24 hours
The time it takes Earth to rotate so the sun appears in the same position in the sky, known as a solar day, is 24 hours. However, the time it takes Earth to complete one full rotation on its axis with respect to distant stars is actually 23 hours 56 minutes 4.091 seconds, known as a sidereal day.
Explanation:
Answer: 24 hours
The time it takes Earth to rotate so the sun appears in the same position in the sky, known as a solar day, is 24 hours. However, the time it takes Earth to complete one full rotation on its axis with respect to distant stars is actually 23 hours 56 minutes 4.091 seconds, known as a sidereal day.
Explanation:
Paying off your debts will most likely
your credit score
Aruin)
OB. nat impact
O C. increase
D. decrease HELPPPP
Answer:
increase
Explanation:
3. Use the simulation to predict where you think the magnet’s magnetic field was
strongest. Explain your answer.
Magnetic field is stronger at the poles whereas weaker at the center.
The magnetic field on the bar magnet is strongest at the poles because the field lines are most concentrated at the poles while on the other hand, the magnetic field is weaker in the central part of magnet.
Magnetic field has equal amount of strength at both the poles so in my opinion as well as scientific point of view, magnet field is stronger at the poles and weaker at the center of magnet.
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a section of hollow pipe and a solid cylinder have the same radius, mass, and length. they both rotate about their long central axes with the same angular speed. which object has the higher rotational kinetic energy?
Answer:
Teniendo dos tuberías, una hueca y otra sólida, con la misma masa, radio y longitud, ambas poseen la misma rapidez angular, entonces el cuerpo hueco tendrá mayor energía cinética rotacional que la tubería sólida, esto es debido a que el tubo hueco tiene mayor inercia rotacional.
La ecuación de energía rotacional viene dada como:
Er = (1/2)·I·ω
De esta manera tenemos que el tubo hueco tiene mayor inercia rotacional que el tubo sólido, por ende, mayor energía.
Explanation:
PLEASE ANSWER NEED HELP!!!!!!!! PLEASE THE CORRECT ANSWER!!!!!!
Maurice spends a lot of time watching television and films. He can’t help but notice that the men in the action movies that he loves are always very toned. He goes to the gym a few times a week, but his abs are nowhere near what he sees in these shows. What is the BEST advice for Maurice?
A.
He should recognize that celebrities often present unrealistic body images.
B.
He must weigh the positives of this kind of entertainment against the negative.
C.
He needs to spend hours every day like celebrities do to get the body he wants.
D.
He should stop watching this kind of media all together since it creates problems.
PLEASE NO LINKS
Answer:
A
Explanation:
The best advice for Maurice is he should recognize that celebrities often present unrealistic body images. The correct option is A.
What is advice?A suggestion made to you by someone regarding what to do or how to act in a specific circumstance: Steven offered me some wise counsel. I believe I will heed your counsel and purchase the green dress. Can I offer you some advice? I require assistance choosing a PC.
Body Dysmorphic Disorder is a condition where “imagined ugliness” is present. People who have this disease perceive a wildly distorted version of themselves when they look in the mirror.
These people frequently spend hours scrutinizing, trying to hide, or worrying about their perceived shortcomings.
Therefore, the correct option is A. He should recognize that celebrities often present unrealistic body images.
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