Given uranium 235 go through an alpha, beta, beta, alpha, gamma, neutron and alpha. What do you have now?
a. 92, 231
b. 88, 222
c. 88, 220
d. 90, 222
Answers
Answer:
b. 88, 222
Explanation:
235U₉₂ ----→ Alpha --------→ 231P₉₀ ----→- beta -----→ 231Q₉₁ ------→-beta -------→231R₉₂--------→-alpha ------→-227S₉₀ ------→ gamma -----→-227S₉₀ ----------→ neutron ------→-226T₉₀-----------→ alpha --------→222 X ₈₈
Atomic No is 88 , atomic weight = 222 .
Related Questions
PLZ HELP DUE TODAY ! ! ! ! A student built the following circuit from a diagram. What can the student do to make this a complete scientific investigation?
The student can complete the same experiment outside.
The student can try completing the experiment in the dark.
The student can use completely new materials and do a different experiment.
The student can change the size of the battery and see what happens.
Answers
Which of the following forces has not changed Earth's surface?
folding
erosion
weathering
gravity
Answers
Answer:Gravity is the force among the options listed that has not directly changed Earth's surface.
Explanation:
Gravity is a fundamental force that acts on all objects with mass, including the Earth itself, but it does not cause changes or modifications to the Earth's surface features. Instead, gravity influences the movement of materials and the shape of the Earth's surface by exerting a pulling force on objects. On the other hand, folding, erosion, and weathering are all processes that directly contribute to shaping
please help me eseghgtrhj
Answers
The correct answer is C.
I have an Energy and temperature activity and I have questions to answer
I do not understand this question:
"Within a 24-hour period, at what three points should the temperature be taken? Why?"
Can somebody help me!!!
Answers
Answer:
8hours 16hours and 24 hours
Explanation:
this is because they 24÷3=8 so the time between the takings of the temperature are equal.
24\3 = 8 or 8•3+24
So you would check the temperature every 8 hours
8 hours 16 hours 24 hours
Please can someone help me need help with these 5 questions!! and QUICK!
I need it done REALLLLLYYYYY soon!! (more like now but-)
(20 points for the answer to all of them)
Answers
Answer:
10. dependent as a change has occurred which has affected something else which is measurable.
11. dependent as a change is made to the environment this is why some species cannot live there as they have adapted to the climate.
12. Dependent due to change occurring it has resulted in the population decreasing which is measurable.
13. Dependent as the animal's and plants' survival is reliant on the environment.
14. Dependant as the plants require sunlight for photosynthies
Answer:
All are dependent
Explanation:
A simple motor converts ________energy into________energy.
A) magnetic;electrical
B) electrical:magnetic
C) electrical:mechanical
D) mechanical;electrical:
Answers
Hope that helped :)
A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J
Answers
Answer:
39,200J
Explanation:
just took the test
The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J
What is potential energy ?Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.
mass(m) = 10kg
g (acceleration due to gravity) = 9.8m/s^2
altitude(height (h)) = 400m
Meteor's Potential energy = m * g * h
= 10 * 9.8 * 400 = 39200 J
correct option will be a) 39200 J
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Huan wants to enter the science fair at his school. He has a list of ideas for his project. Which questions could be answered through scientific investigation? Check all that apply. Does pressure have an effect on the solubility of a substance? Which physicist was the smartest? Is the information on the periodic table difficult to understand? Which brand of soap is the best for cleaning grease off of dishes? Which laboratory experiment is the most fun to perform?
Answers
Calculate the density of the football. Use the formula D = m/V
where D is the density, m is the mass, and V is the volume.
Record your calculations in Table B of your Student Guide.
What is the density of the football while it is deflated? ______ g/cm3
Answers
Answer:
0.84
Explanation:
20 PTS HELP PLS Several electric motors can pump an equal amount of water into an elevated water tank. The time required for each motor is shown.
Which motor has the greatest power output?
#1
#3
#4
#2
Answers
Can someone help me with this I'm-- never mind I would just like help..
Answers
Answer:
i don't knowwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww the answer
For this assignment, you will research how to design and build a solar cooker. Search reliable online sites
for “solar cookers.” After getting the materials you need from your teacher, you will present your initial
design as a drawing or illustration. You will then build your device and test its efficiency by warming up a
hot dog until it reaches an internal temperature of 165°F, recording how long it took you to reach this
temperature. Based on your tests, you will make recommendations on how to improve the design of your
solar cooker, and then present your final design and the logic that supports it in a lab report. Your lab
report should include a title, a list of materials that you used to build your solar cooker, a drawing of your
initial design, observations from your experimental tests, recommendations for a final design based on
what you know about radiation, a drawing of your final design, and the results of the efficiency test. To
help you write your lab report, there is a Student Worksheet on the last few pages of this document.
Answers
Answer:
Ideas for Prototype Design
Similar to a cardboard oven just smaller and solar powered
Preliminary Sketches (attach separate paper, if needed)
Option A: i gave the picture
Advantages: Disadvantages:
the tin foil will attract the sun if theres enough heat for the food to warm up
the plastic will keep bugs and/or animal away from getting it it might take longer
the box gives the food something to be in instead of the ground
Option B: i think im going to stay with my original plan i can always make changesMore advantages and disadvantges
Advantages: Disadvantages:
reducing my carbon footprint by alot heat varies so the food my take really really long
using no energy other than the sun.
the acceleration of a car is 5m/s² . what is the elapsed time for it to accelerate from 10 m/s to 50 m/s
show work.
Answers
Answer:
Time taken to accelerate is 8s.
Explanation:
\(v=u+at\)
\(50=10+5t\)
t=8
A balanced chemical equation reflects the idea that the mass of the products. A.is greater than the mass of the reactants. B.is less than the mass of the reactants. C.equals the mass of the reactants. D.is not related to the mass of the reactants.
Answers
Answer:
My answer to the question is option C.
A balanced chemical equation reflects the idea that the mass of the products is equal to the mass of the reactants. The correct option is C.
In a balanced chemical equation, the mass of the products must be equal to the mass of the reactants.
According to the law of conservation of mass, in a chemical reaction, the mass of the products must be equal to the mass of the reactants because matter cannot be created or destroyed, it only can be transformed.
For example, for the given reaction:
CH₄ + 2O₂ → CO₂ + 2H₂O
The mass of the reaction is:
\( m_{CH_{4}} + m_{O_{2}} = m_{CO_{2}} + m_{H_{2}O} \)
So the sum of the masses of the reactants must be equal to the sum of the masses of the products.
Therefore, the correct option is C.
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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
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
Create a list of 5 potential jobs that students of genealogy can obtain.
Answers
Answer:
Private Investigator.
Investigative Genetic Genealogist.
Historic Preservationist.
Military Repatriation Expert.
Heir Searcher.
Explanation:
The potential jobs that students of genealogy can obtain are Genealogical Researcher, Family History Consultant, Archivist, Genetic Genealogist, and Genealogy Educator.
1) Genealogical Researcher: A genealogical researcher is responsible for conducting in-depth research to trace family histories and construct detailed family trees.
2) Family History Consultant: Family history consultants provide guidance and assistance to individuals or families interested in discovering their genealogy.
3) Archivist: Archivists play a crucial role in preserving and managing historical records, including genealogical documents. They are responsible for collecting, organizing, cataloging, and maintaining records that hold valuable genealogical information.
4) Genetic Genealogist: Genetic genealogists specialize in using DNA analysis to trace family lineages and uncover genetic relationships among individuals.
5) Genealogy Educator: Genealogy educators teach courses, workshops, or seminars on genealogical research techniques, methodologies, and resources.
Therefore, The potential jobs that students of genealogy can obtain are Genealogical Researcher, Family History Consultant, Archivist, Genetic Genealogist, and Genealogy Educator.
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PLZ HELP 16 POINTS
Which of the following statements best describes the role of glucose during photosynthesis? (5 points)
It reacts with water.
It is a product formed.
It reacts with carbon dioxide.
It is converted into light energy.
Answers
Answer:
It is a product formed.
Explanation:
when carbon di oxide and water react with help of sun light glucose and O2 becomes product.
Answer:
it is converted with light energy.
Explanation:
i got a 100 on my test
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"
4.16 Lab: Motion and Forces
LOOK AT THE PHOTOS BELOW
Answers
An object's velocity is altered by a net force, and acceleration increases with net force. To accelerate to the same amount as being less massive objects, more massive objects need greater net forces.
What constitutes each of the four categories of forces?Any of the four fundamental forces—gravitational, electromagnetic, strong, & weak—that control how objects or particles interact as well as some particle decay—also known as the fundamental interaction is referred to as a fundamental force in physics. These basic forces serve as the foundation for all known natural forces.
Which are the main categories of force?Both contact forces & act at the a distance forces fall under the category of force. You employ force on a daily basis. Basically, force is push and pull. You exert force on an object when you push or pull it.
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25 POINTS! Q1) A cinder block is pulled 0.50 meters to the right in 3 seconds. What is the block's average speed to the nearest hundredth of a meter per second (m/s)?
Q2) A skateboarder starts at the top of a halfpipe ramp, skates through the middle, and up the other side. Match the following to describe what is happening at each of the three points in the skater's movement.
Middle
End
Beginning
1.
Maximum kinetic energy
2.
Potential and kinetic energy is equal
3.
Maximum potential energy
Answers
The average speed of the blocks are 0.36 m/S.
Explanation:
Average speed is defined as the ratio of distance covered per unit time. So if it is said that blocks are pulled to 0.9 m in the right side. This means the blocks cover a distance of 0.9 m from the origin and that distance is covered in 2.5 s. Thus, the average speed can be calculated from the change in speed
with respect to time. As at time t = 0, the speed is
also zero, and at time t = 2.5 s, the speed will be
Speed =
0.9 = 0.36
2.5
Since, in this case, the speed is equal to the average speed of blocks. So the average speed of the blocks will be 0.36 m/s.
1.maximum kinetic energy minimum GPE
2.GPE is equal to kinetic energy
3 this time there will be maximum GPE
Please someone help with all of these 3
Answers
Answer: Because they all share the same square root
Explanation:
h = 6.63 × 10−34 J.s = 4.136 × 10-15 eV.s
Answer:
A=12 B=36 C=1 D=36
Explanation:
What does your body use to replace tissues and organs?
Answers
Answer:
the body produces stem cells
Explanation:
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:
BRAINLIEST
Now that you have done
some research, write a
hypothesis based on the
relationship between zinnias
and the sun. Write it as an
“If ________, then__________”
statement.
Answers
Answer:
If zinnias are exposed to direct sunlight for a sufficient amount of time each day, then they will grow and bloom more successfully compared to those that do not receive adequate sunlight.
Hope my answer helps you ✌️
Mark BRAINLIEST
Tanya planted seedlings in her garden over the weekend. The instructions that came with the seedlings stated that they need to be planted 0.2 meters apart. Tanya has a measuring tape that has values in centimeters. Help Tanya convert meters to centimeters.
Determine the ratio to use: .
Tanya should plant the saplings 20 centimeters apart.
1 meter is equal to 100 centimeters.
Multiply the given value by the ratio: .
Answers
Answer:
Explanation:
1 meter = 100 cm
1 cm = 10 mm
Then,
0.2 m * 100 cm / 1 m = 20 cm
This does not seem like a physics question ??
help me pls i need the answer
Answers
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 need help hurry due in 30 minutes
Answers
Answer:
No, I don't agree with the friend.
Explanation:
I don't agree because the energy doesn't just "disappear it's converted to kinetic energy. due to the friction some of the energy in the system is converted to heat energy making it look like it "disappeared".
Energy can't be created nor destroyed so it definitely can't just disappear though it can be converted or transformed.
I hope that helped :)
hope this helped
Please help me asap and u get brainliest if correct!!!!
