when did bohr propose his model of the atom?
Answers
Answer:
1913
Explanation:
In 1913, Niels Bohr proposed a theory for the hydrogen atom, based on quantum theory that some physical quantities only take discrete values.
I believe the answer is 1913
Related Questions
A student wanted to check her idea that a planet that is closer to the Sun receives more of the Sun’s energy than a planet that is farther away from the Sun. She placed a radiometer 50 cm
away from a clamp light with a 150 –W lightbulb
To check her idea, she also needed to set up another clamp light and radiometer.
Which of the following setups would she use?
A. a clamp light with a 50-W lightbulb placed 25 cm from the radiometer
B. a clamp light with a 50-W lightbulb placed 50 cm from the radiometer
C. a clamp light with a 150-W lightbulb placed 25 cm from the radiometer
D. a clamp light with a 150-W lightbulb placed 50 cm from the radiometer
Answers
Answer:
C. a clamp light with a 150-W lightbulb placed 25 cm from the radiometer
Explanation:
because the temperature has to be set, meaning it can't change, and it should be a different distance away than the first one.
Hope this helps! Stay safe!
Any other Gypresgions come from shakespeare and are they used today?
Answers
Answer:Both books find Shakespeare deeply Catholic, but they reach very different conclusions about what that meant in his life and work during a time of official Protestantism, the Jesuit mission to England, and sharp divisions among Anglicans, Puritans, and Catholics.
Explanation:
How is net force calculated?
Answers
Answer:
The formula in order to calculate FN is:
F net = F a + F g
You can now solve any problem with this formula as long as you know the measurements.
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.
how many cells do we have in total in our bodies? if we add em all together
Answers
Suddenly she hears a pop from her tire. She gets off the bike and examines the tire - she notices a small hole in the tire and feels air coming from the hole.
The air flows out of the tire because the air pressure inside the tire is _______ the pressure outside the tire. Fill in the blank by choosing one answer below.
Answers
Answer:
b
Explanation:
Your friend Lisa comes to you saying, “I want to borrow $7,000 for a new car and the auto dealership came back to me with this offer. I don’t understand what this all means. And...why will I end up paying $8,119.78?” How would you respond to Lisa so that she understands the conditions of the loan offer?
Answers
The total amount you'll end up paying is $8,119.78, which is more than the amount you're borrowing. This is because the interest on the loan adds up over time.
What are the conditions of the loan provider?They are offering you a loan of $7,000 with an interest rate of 6.5%. The loan term is 48 months, which means you have four years to repay the loan.
Based on these terms, your monthly payments will be $170.41.
However, the total amount you'll end up paying is $8,119.78, which is more than the amount you're borrowing. This is because the interest on the loan adds up over time.
To put it simply, the dealership is lending you $7,000, but they are also charging you 6.5% interest on the amount you borrow. This means that for every month you keep the loan, you'll pay some interest, which adds up over time. By the end of the 48-month loan term, you'll have paid back the $7,000 you borrowed, plus the additional $1,119.78 in interest.
So, before you decide to accept the loan offer, it's important to understand the total cost of the loan and whether the monthly payments fit into your budget. You may also want to shop around and compare loan offers from different lenders to find the best deal for you.
Therefore, you'll have paid back the $7,000 you borrowed, plus the additional $1,119.78 in interest. which is greater than the borrowed.
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Explain the events that would cause these changes in velocity. For each claim, describe the thruster force and how that would result in the pod moving away from the station.
Claim 1: The thrusters caused the pod to move in the opposite direction.
Claim 2: The thrusters only slowed the pod, it didn’t stop; the pod hit the space station, which made it bounce and move in the opposite direction.
Claim 1 question: Firing the thrusters would have caused the pod to move in the opposite direction if . . .
Claim 2 Question: Firing the thrusters only slowed the pod, it didn’t stop; the pod hit the space station, which made it bounce and move in the opposite direction. This would happen if . . .
Answers
Answer: Claim 1
Explanation:
Explain:
How does gravity affect the motions of Earth and the Moon?
Answers
Answer:
The Sun's gravitational pull keeps our planet orbiting the Sun. The motion of the Moon is affected by the gravity of the Sun and Earth. Moon's gravity pulls on the Earth and makes the tides rise and fall.
Answer:
Gravity is making the Earth go around the Sun, it's also making the Moon go around the Earth, and somehow (I don't know how) the Moon's gravity messes with the water on Earth.
Explanation:
Did you notice that you could use the magnet to get the paper clip to move without
touching it?How was this similar to the floating plant?A change in motion can only happen when a force is acting on an object.What force was acting on the paper clip?Using the paper clip and the magnet as an example, make a claim how magnets can make an object move without touching the object.
Answers
Yes, I noticed that a magnet could be used to move the paper clip without touching it.
It is similar to the floating plant because both processes involve a force acting on an object without having a direct physical contact.
The force acting on the paper clip is described as the magnetic force,
The claim can be made that magnets could move an object without physical contact by using the magnetic force to exert a force on the object.
What is magnetic force?A magnetic field is described as a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.
In this case , the magnetic force arose due to the interaction between the magnetic fields of the magnet and the paper clip.
The magnet has a magnetic field around it, which exerts a force on any nearby magnetic material, such as the paper clip.
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Answer:
Yes, I noticed that a magnet could be used to move the paper clip without touching it.
It is similar to the floating plant because both processes involve a force acting on an object without having a direct physical contact.
The force acting on the paper clip is described as the magnetic force,
The claim can be made that magnets could move an object without physical contact by using the magnetic force to exert a force on the object
Explanation:
In which state is the best known source of petrified wood located? A Arizona B Alaska C California D Colorado
Answers
Answer:
Arizona.
Explanation:
Petrified Forest National Park is an American national park in Navajo and Apache counties in northeastern Arizona. Named for its large deposits of petrified wood, the park covers about 346 square miles (900 square kilometers), encompassing semi-desert shrub steppe as well as highly eroded and colorful badlands.
Science anybody? I don't know how to answer this question-
Answers
Answer: I think it's this? I'm very sorry if I am wrong
Domain: Archaea Kingdom: Monera
Domain - Archaea
Kingdom - Crenarchaeota
What is the wavelength of a sound with the frequency set to min?
Answers
Answer:
17.8
Explanation:
between adjacent identical parts of a wave
A couple wants to build a holiday cottage, the cottage is not connected to an electricity grid, but the cottage is next to a small river. The river is always flowing and never dries up, the weather is often windy.
Which one should they get to receive energy.
a wind turbine
solar cells
Answers
Answer:
Wind turbine since the place is often windy
What does it mean that energy cannot be created or destroyed?
A. Potential energy cannot be transformed into kinetic energy
B. Energy can only be transformed
C. Kinetic energy cannot be transformed into kinetic energy
D. Kinetic energy cannot be transformed into potential energy
Answers
Answer:
D
Explanation:
the reason this is right is because kinetic energy cannot become potential because kinetic is the when something is moving like a roller coaster going down a ramp but it can be converted into it
pls give brainlist pls me a lot
Energy cannot be created or destroyed, but it can be transferred and transformed. There are a number of different ways energy can be changed, such as when potential energy becomes kinetic energy or when one object moves another object.
Lab Report
Motion and Forces
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U4_ Lab_MotionAndForces_Alice_Jones.doc).
Introduction
What was the purpose purpose of the experiment?
The purpose of the experiment is to test the hypothesis.
What were the independent, dependent, and control variables in your investigation? Describe the variables for each part of the experiment.
Write a hypothesis based on observations and scientific principles.
Type your answer here:
Experimental Methods
What tools did you use to collect your data?
Questionnaires and observations.
Write your procedure. List each step so that another student could follow the procedure and repeat your experiment.
Type your answer here:
Data and Observations
Record your observations.
Type your answer here:
Conclusions
What conclusions can you draw about how the sum of forces acting on an object affect its motion? Write an evidence-based claim.
Type your answer here:
Which mass, A, B, or C, was the greatest? Use the observations from your experiment and your knowledge of Newton’s laws of motion to write an evidence-based claim.
Type your answer here:
Make a model that shows the forces acting on two blocks on a flat, frictionless surface:
A 1 N block at rest
A 1 N block with 2 N of force applied in one horizontal direction
Include arrows to represent the forces and labels to indicate the magnitude of each force. Use your model to compare and explain the motion of each block.
Type your answer here:
Answers
Answer's C
Explanation: The matter that surrounding this whole planet or time and frequencies the motion and forces that people can't determine unless made a hypothesis
What is not nessary for an organism
Answers
Answer:
parents
Explanation:
Answer:
a place to live
Explanation:
option c
How can you make a sound louder?
adding more frequency
removing energy
removing frequency
adding more energy
Answers
Answer:
BY adding more energy
Explanation:
Because by adding energy it will cause the string/sound to vibrate more which can cause more air particles to more and longer making the sound louder.
Force Fields test
Based On Newton’s Law of universal gravitation, Complete the following table
Answers
I really hope this is right I’m so sorry if it’s not. :)
Mass increases
Distance decreases
Gravity decreases:
Distance increases
Mass decreases
Assess a student set up a line of dominoes so that each is standing vertically next to another. he then pushes the first one and each falls down in succession. how does this demonstration represent a wave? how is it different?
Answers
Answer:
5
Explanation:
what is household product that refracts light?
Answers
Answer:
Air 1.00 300
Water 1.33 226
Glass 1.5 200
Diamond
Explanation:
Why DID THE CHICKEN CROSS THE ROAD?
-don't say "to get to the other side"
This is to say the most sense and creative answer for my class"Physic Jokes"
Answers
Answer:The chicken crossed the road because it put one foot in front of the other and took a sufficient number of steps to traverse a distance greater than or equal to the road’s width. Note that the reason is not because the earth is the center of the universe.
Explanation:
PLEASE HELP ON QUESTION ASAP !
Hi please help on question.If you get answer correct is be willing to give brainliest,a thanks, five stars and 10pts.
My question:
As an analogy of a circuit with resistance, think of an obstacle race . Which parts of a circuit do the obstacles represent? which part of the circuit do the people respresent?
Answers
In an analogy of a circuit with a resistance to an obstacle race, we can consider various elements of the race as representative of different components of the circuit.Obstacles, Track or Route, Participants, Start and Finish Line.
Obstacles: The obstacles in the race represent the resistors in a circuit. Just as resistors impede the flow of current in a circuit, obstacles in the race create hurdles that slow down the participants. The difficulty or magnitude of the obstacles can be equated to the resistance value of the resistors in a circuit.
Track or Route: The race track or route itself can be seen as the conductive path in a circuit. It provides a pathway for the participants to move and complete the race. Similarly, the conductive path in a circuit allows the flow of current from the power source to the load.
Participants: The people participating in the race represent the flow of electrons in a circuit. Just as the participants move through the obstacles in the race, electrons move through the resistors in a circuit. The rate at which participants complete the race can be compared to the current flowing through the circuit.
Start and Finish Line: The start and finish line of the race correspond to the terminals of a circuit. The start line represents the positive terminal, where the participants begin their journey, and the finish line represents the negative terminal, where the race concludes.
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Answer: As an analogy of a circuit with resistance, the obstacles in an obstacle race represent the resistance in a circuit. The parts of the circuit that the obstacles represent are the resistors. The people in the obstacle race represent the current in a circuit. The current is the flow of charged particles (such as electrons) in a circuit. In an obstacle race, the people are moving through the obstacles, just as the charged particles are moving through the resistors in a circuit. The obstacles slow down the people, just as the resistors slow down the flow of charged particles in a circuit.
Explanation:
which of these questions are unit rates?
a.) crystal bought 2 pairs of shoes for $30.
b.) dallas ran 12 km in an hour.
c.) hugh made 17 tables in 4 days.
d.) jorge typed 222 words in 4 minutes.
e.) there were 56 berries in one pie.
Answers
Use the data in the table to explain how you could determine the volume of the block.
Answers
To find the volume of the block, subtract the initial water volume from the final water volume, convert the change in water volume to cubic centimeters, and consider it as the volume of the block.
To find the volume of the block using the measurements provided.
1. Calculate the change in water volume:
The initial water volume is given as 62.3 mL, and the final water volume is given as 89.5 mL. To determine the change in water volume, we subtract the initial volume from the final volume: 89.5 mL - 62.3 mL = 27.2 mL. This value represents the increase in water volume caused by placing the block in the graduated cylinder.
2. Convert the change in water volume to cubic centimeters:
Since 1 mL is equivalent to 1 cubic centimeter (cc), we can directly convert the change in water volume from milliliters to cubic centimeters. In this case, the change in water volume is 27.2 mL, which is also equal to 27.2 cc.
3. Determine the volume of the block:
When the block is placed in the graduated cylinder, it displaces some amount of water, resulting in an increase in water volume. By measuring this increase in volume, we can determine the volume of the block itself. In this case, the change in water volume of 27.2 cc represents the volume of the block.
By following these steps, we can find the volume of the block based on the provided measurements.
Therefore, By deducting the initial water volume from the final water volume and converting the difference in water volume to cubic centimeters, the block's volume can be calculated. the volume of the block is 27.2 cc.
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•Then I should :calculate the time of the block to fall
Two cities in the same climate zone must have the same climate and weather conditions. Why is this statement true or false? (2 points)
a
It is false because cities in the same climate zone must have different climates.
b
It is false because the two cities might differ in their proximity to water.
c
It is true because the two cities are at the same latitude.
d
It is true because the two cities will be closer to the equator.
Answers
Answer:
same climatic zone means both cities lie in the same climatic conditions but the weather could be vary due to the lifestyle if the peoples
Answer:
C
Explanation:
Its C i guess because even tho they are two different cities they still lie on a same Zone
How does the agricultural activity most likely affect the surface water of the area?
Answers
Answer:
Agriculture has been the cause of significant modification of landscapes throughout the world. Tillage of land changes the infiltration and runoff characteristics of the land surface, which affects recharge to ground water, delivery of water and sediment to surface-water bodies, and evapotranspiration.
Explanation:
Please help! It has to deal with Newton's 3rd law! 30 points! and if right brainliest!
Answers
Answer:
Newton's Third Law
His third law states that for every action (force) in nature there is an equal and opposite reaction
Explanation:
Help me ASAP (this is science ;-;)
Answers
Animals exhale _____.
oxygen
glucose
carbon
carbon dioxide
Answers
Answer:
carbon dioxide
Explanation: