Determine the relationship between neutron stars and black holes
Answers
Answer:
When a dying star has a mass which is 1.4 to 3 times that of the sun, it will form a neutron star. Stars with a mass greater than thrice the sun's mass, black hole is formed.
Explanation:
Related Questions
Helium is an odorless, colorless gas at room temperature. It is less dense than air. That's why helium balloons float. It is a non-reactive gas, a member of the Noble gas family. Its melting point is -272.2 oC and its boiling point is -268.93 o A chemical property of Helium is? A) it’s boiling point of -268.93 oC B) the fact that it’s less dense than air C) It’s lack of color (colorless) D) It’s non-reactivity
Answers
Answer:
D. It's non-reactivity
Explanation:
reactiveness is chemical
which of the following increases as you go down a mountain?
A: Buoyancy
B: Altitude
C: Climate
D: Density of the Atmosphere
Answers
Answer:
c altitude
Explanation:
because your gaining speed
Answer:
Its B Altitude
Explanation:
Complete this sentence. If the mass of object A is __________ than object B, then the weight of object A will be _______________ the weight of object B.
greater, heavier than
less, heavier than
greater, the same as
less, the same as
Answers
Answer:
Complete this sentence. If the mass of object A is greater than object B, then the weight of object A will be heavier the weight of object B.
Explanation:
If the mass of Object A is more/greater than object B then it would be "heavier"
Cake, battery, boiling water, a flying kite, a flower vase on top of a table
Which of the items above have
a) Thermal energy
b) Kinetic energy
c) Gravitational potential energy
d) Chemical energy
Answers
But correct me if I’m wrong
Answer:
c i belive or maybe d i would think its one of those
Explanation:
An airplane travels a distance of 4,000 km from New York to Los Angeles in 5 hours. Enter the numerical value for the average speed of the airplane.
Answers
Answer: Divide the km by the hours.
what things would you need to survive in the troposphere?
Answers
Answer: i think it means how we need plants, water, food, and gases from that to survive?
Explanation:
Because of this protection, many molecules are more stable in the troposphere then elsewhere in the atmosphere. This protection makes life possible on Earth.
Energy that comes from the sun—solar energy—is clean. It does not cause pollution the way energy from fossil fuels (like gas and oil) does. However, solar energy must be collected before it can be used. The instruments used to collect solar energy are quite costly.
This paragraph states that solar energy ________.
A) causes a lot of pollution
B) is expensive to collect
C) is one kind of fossil fuel
D) is a cheap way to get energy
Answers
Is expensive to collect
The photo shows a system that consists of a person on a diving board. What change could you make to the system that would decrease its total energy?
A. Replace the diver with someone who has more mass.
B. Decrease the height of the diving board.
C. Increase the length of the diving board.
D. Increase the height of the diving board.
*If you do not know the answer, then DON'T respond. I will report you. Also, explanations are appreciated but if not then that's fine.
Answers
Answer:
B
Explanation:
If you decrease the height of the diving board, you will create less energy because you will build up less acceleration jumping from a lower height. Hope this helps ya!
What is one way that an electric field is different from a magnetic field?
Answers
Answer:
The one of the major difference between the magnetic and electric field is that the electric field induces around the static charge particle which is either negative or positive, whereas the magnetic field produces around the poles (i.e., the north and south pole) of the magnet
Explanation:
Difference Between Electric Field And Magnetic Field. Magnetic field is an exerted area around the magnetic force. It is obtained by moving electric charges. The direction of the magnetic field is indicated by lines. While the electric fields are generated around the particles which obtains electric charge.
Explanation:
hope this helps
can gas pressure sometimes be greater than atmospheric pressure?
Answers
Answer:
PRESSURE is a force exerted by the substance per unit area on another substance. The pressure of a gas is the force that the gas exerts on the walls of its container. ... Atmospheric pressure varies with height just as water pressure varies with depth.
hope this helps
plz can i get brainliest
If a man bought 1000N of potatoes in Russia and sold it in Africa for the same price, will he be in profit or loss? Explain your answer with proper reason neglate the transportation cost
Answers
Answer:
profit because if the man sold them to africa hw must pay for it to send them to africa so it will voat him more.
Answer:
Explanation:
if they are selling potatoes based on its weight, then it depends on the acceleration due to gravity(g) in the region
If g in africa > russia, then he will make a profit, since weight will be more,
if its < russia, then he will make a loss, i dont know thier actual values so you will have to find that out on your own
A man climbs a ladder. Which two quantities can be used to calculate the energy stored of the man at the top of the ladder.
A. The Weight of the man and the time taken only
B. The Weight of the man and the vertical distance moved only
C. The work don't by the man and the time taken only
D. The work don't by the man and the vertical distance moved only
Answers
Answer:The answer must be The weight of the man and the vertical distance moved.
Explanation: you calculate it by the force you applied times the distance you moved
__________ properties explain how matter changes its identity to form a new substance.
phase
chemical
physical
reaction
Answers
Answer:
chemical properties explain how matter changes its identity to form a new substance.
The chemical properties explain how matter changes its identity to form a new substance. The correct option is B.
What is chemical property?A chemical property is any property of a material that emerges during or after a chemical reaction; that is, any quality that can only be established by changing a substance's chemical identity.
A chemical property is a property of a specific substance that can be observed during a chemical reaction.
Some of the most important chemical properties are flammability, toxicity, heat of combustion, pH value, radioactive decay rate, and chemical stability.
The chemical properties of matter describe how matter changes its identity to form a new substance.
The property of a substance that can be observed or measured when the substance undergoes a chemical change is referred to as its chemical property. A chemical reaction can be used to observe chemical properties.
Thus, the correct option is B.
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PLEASE HELP
Highlight the objects or materials items that are made of cells and did originate from cells.
Answers
Answer:
ur mom
Explanation:
Answer: flowers chromomes cell membranes clorophyl
Explanation: cells are the building blocks of life and flowers contain cells for different things like we contain cells for mitosis I am strongly sure about flowers but the rest maybe wrong hope this helped!
How are scientists monitoring and studying the effects on the herring?
Answers
Answer:
using inverted subject-verb order.
Explanation:
list both types of energy before skydiver jumps out of the plane and as the sky diver is diving.
Answers
Answer : This is an example of Kenitic and potential energy
Explanation:
kenitic: the act of moving or motion
potential: not. moving YET
he was not moving when he was on the plane and had potential energy cause he wasn't getting pulled down and kenitic energy was when he was getting pulled down from force of gravity when he was getting pulled to the ground when he was skydiving
In this transverse wave, label the arrow that shows the direction the wave travels with a T. Label the arrow that shows how the spring is disturbed with a D.
Answers
The arrow that shows the spring being disturbed is the one in the hand going up and down
100 POINTS AND BRAINLIEST NO CAP IF YOU WRITE THIS CORRECTLY AND DECENTLY IF YOU HAVE A QUESTION PUT IT IN THE COMMENTS NOT AN ANSWER PLS
You have learned that power is the speed, or rate of doing work. In this report you will learn more about James Watt or horsepower.
Here is your goal for this assignment:
Complete an activity on power
Complete one of these activities:
1. Research the life of James Watt. Report in about fifty words some of the important events in Watt's life leading up to the watt being named in his honor.
2. Conduct a survey of equipment and cars to find out the amount of horsepower of each item you check. You may visit a car dealer, an appliance store, a heavy-equipment dealer. Make a list of the horsepower of at least ten items of equipment. Some suggestions include: comparing two or three different makes of cars or finding the horsepower of a lawn mower, boat, vacuum cleaner, or some heavy equipment for moving dirt. You may find that the power of a washing machine or vacuum cleaner is given in watts instead of horsepower. Make a chart to record your findings, including:
Type of Equipment Surveyed: (Indicate whether it is a car, shovel, vacuum cleaner, etc.)
Amount of Horsepower or Watts: (Record power in horsepower or in watts.)
Answers
Power is the rate at which work is done. James Watt is a famous engineer and inventor who developed the steam engine.
Who is James Watt?He improved the efficiency of the engine by adding a separate condenser, which reduced the amount of fuel needed. In his honor, the watt was named after him as the unit of power.
For the activity, here is a suggestion; conducting a survey of equipment and cars to find out the amount of horsepower of each item you check. You may visit a car dealer, an appliance store, a heavy-equipment dealer.
Make a list of the horsepower of at least ten items of equipment. Some suggestions include: comparing two or three different makes of cars or finding the horsepower of a lawn mower, boat, vacuum cleaner, or some heavy equipment for moving dirt. You may find that the power of a washing machine or vacuum cleaner is given in watts instead of horsepower. Make a chart to record your findings, including:
Type of Equipment Surveyed: (Indicate whether it is a car, shovel, vacuum cleaner, etc.)
Amount of Horsepower or Watts: (Record power in horsepower or in watts.)
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Which effect is created when two sound waves that are close in pitch
interact?
O A. Echoes
O B. Loudness
C. Beats
O D. Intensity
Answers
Answer:
C. Beats
Explanation:
When waves are interfering with each other, the sound is louder in some places and softer in others. As a result, we hear pulses or beats in the sound.
Answer:
beats
Explanation:
got it right
Which answer shows a balanced nuclear equation for the alpha decay of plutonium-239
Answers
Answer: An alpha particle is a helium-4 nucleus, it contains gwo protons and two neutrons. So, alpha decay, giving off an alpha particle, does the following:
1)reduces the atomic number (number of just protons) by two. Plutonium has atomic number of 94, take two protons away and you are left with 92 which corresponds to uranium.
2) reduces the mass number (protons plus neutrons) by 4. If you start with 239 and subtract two protons and two neutrons, you are left with 235.
Explanation:
How can carpet be beneficial for reducing or blocking sound?
Answers
Answer:
Carpets are hard, and have echoing surfaces. Sound waves are absorbed by the carpet and the padding used beneath it as most of them are soundproof.
Mahiya and Mrinmoy are in a relay around a square field with each side of length 60m. First, Mahiya runs at a speed of 6 ms−1 for 60m to pass a baton to Mrinmoy. Then Mrinmoy runs 120m at 4ms−1 while Mahiya runs through the field to reach the other corner. Then Mrinmoy passes the baton. But Mahiya is now tired since she has been constantly running. So, she only runs at 3ms−1 for the final 60m. What is the average speed of the baton in ms−1?
Answers
The average speed of the baton can be determined by dividing the total distance travelled by the total time taken for that travelling.
\(Average\ Time = \frac{Total\ Distance}{Total\ Time}\)
First, we will find the total distance, by adding the distances travelled by both Mahiya and Mrinmoy, while carrying the baton.
\(Total\ Distance = Distance\ Travelled\ by\ Mahiya\ to\ pass\ the\ baton\ to\ Mrinmoy\ +\ Distance\ Travelled\ by\ Mrinmoy\ to\ pass\ the\ baton\ to\ Mahiya\ +\ Final\ Distance\ Travelled\ by\\ Mahiya\)Total Distance = 60 m + 120 m + 60 m = 240 m
Now, we will find the total time taken for this travelling. To find out the total time we will divide each distance travelled by the speed of the traveller during that distance:
\(Total\ Time = \frac{60\ m}{6\ m/s}+\frac{120\ m}{4\ m/s}+\frac{60\ m}{3\ m/s}\\\\Total\ Time = 10\ s\ +\ 30\ s\ +\ 20\ s\)
Total Time = 60 s
Now, we finally find the average speed of the baton by using the formula:
\(Average\ Time = \frac{Total\ Distance}{Total\ Time}\\\\Average\ Time = \frac{240\ m}{60\ s}\)
Average Speed = 4 ms⁻¹
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Justin and Oscar each hit a baseball with a bat. The baseballs have the same mass, but the ball Justin hits has a greater acceleration. What might be the reason for the greater acceleration of Justin's baseball?
Answers
The acceleration is different in both cases because, the force applied is different. Acceleration is force divided by mass of the object. Thus, Justin had greater force than Oscar.
What is force ?Force is an external agent acting on body to change its motion or deform it. There are various kinds of forces such as frictional force, gravitational force, nuclear force etc.
According to Newton's second law of motion, the force acting on an object is the product of its mass and acceleration.
Thus, F = ma
Hence, as the force increases the body is accelerated more.
With the same mass for the two balls, the force used to hit it was different and thus, the acceleration differs in both cases. Therefore, Justin has the greater force.
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Explain the role of gravity and inertia on the motion of objects in the solar system.
Answers
help me pls i need the answer
Answers
What two gases in the atmosphere do animals and plants need to breathe and grow?
Answers
Answer: Explanation:
Plants and animals each produce the gases that the other needs to live. Plants need carbon dioxide—people and other animals exhale carbon dioxide as a waste product. People and other animals need oxygen—plants produce oxygen during an important process called photosynthesis, which turns the sun's energy into nutrients.
In a warehouse, the workers sometimes slide boxes along the floor to move them. Two boxes were sliding toward each other and crashed. The crash caused both boxes to change speed. Based on the information in the diagram, which statement is correct? In your answer, explain what the forces were like and why the boxes changed speed.
Box 1 has more mass than Box 2.
Box 1 and Box 2 are the same mass.
Box 1 has less mass than Box 2
Answers
Answer:
Box 1 and Box 2 are the same mass It caused both to change speed because they have both the same mass.
Explanation:
What does it mean when something asks to put a proposed hypothesis?
Answers
Black to move and capture a hanging piece . Select the best move
A) Nxg3
B) Bxg3
C) Qxg5
Answers
Answer: A
Explanation:The Pawn moves directly forward, never backward or to the side. Pawns capture a piece that is one square diagonally forward. Though Pawns normally cannot move diagonally, this is the only way they capture.
Based on the information provided, the best move to capture a hanging piece would be: A) Nxg3
What would be the best move to capture a hanging piece ?Nxg3 would be the best move to capture a hanging piece.
This move involves sacrificing the knight to capture the hanging piece, which could be a bishop or pawn, depending on the position of pieces. After Nxg3, the opponent may capture the knight with different piece, but the player who made the move will have successfully captured the hanging piece.
However, it's important to note that the best move ultimately depends on the overall strategy of the player and the position of the other pieces on the board.
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Are you allowed to jump serve in badminton?
PS. respond in yes or no and explain your answer please