The spring undergoes a change in potential energy of
1/2 k (2.9 m)² - 1/2 k (1.4 m)² = 87 J
Solve for k :
k ((2.9 m)² - (1.4 m)²) = 174 J
k = (174 J) / ((2.9 m)² - (1.4 m)²)
k ≈ 27 N/m
An informative presentation can be used for conducting a classroom discussion. Discuss strategies for engaging students when presenting a topic of discussion in a presentation.
An informative presentation is a type of presentation that serves specific audiences. In the classroom, an informative presentation must be instructive and edifying for all the students.
An informative presentation is a presentation useful for a specific audience (in this case, students), which should be ideally both instructive and edifying for all the audience.
Some useful tips that can help to achieve an informative presentation include:
Share storiesAdd videosPoll the classMake discussion extensiveAn informative presentation always includes an enriching discussion, which means that the presentation should be interactive and involve students in the process.
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Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor of and then a rotation a dilation with a scale factor of and then a translation a dilation with a scale factor of 4 and then a rotation a dilation with a scale factor of 4 and then a translation.
Answer:
B a dilation with a scale factor of 1/4 and then a translation
Explanation:
on edgenunity
Answer:
B
Explanation:
A 5 kg object near earth's surface is released from rest such that it falls a distance of 10 m. After the object falls 10 m, it has a speed of 12 m/s. Which of the following correctly identifies whether the object-earth system is open or closed and describes the net external force?.
Answer:
Explanation:
D)The system is open, and the net external force is nonzero.
Which of the following is not a characteristic of the type b personality?.
Answer:
Is more emotional & perspective, laid back.
In the sale of a business, if the requirements of the uniform commercial code are not followed, who would most likely suffer the greatest injury?.
If the requirements of the uniform commercial code (UCC) are not followed, then the BUYER would most likely suffer the greatest injury. A buyer is an individual who buys something.
The Uniform Commercial Code (UCC) is a set of regulations that govern commercial transactions in the USA.
This code (UCC) was first published in 1952 after approval from the American Law Institute.
The major goal of the UCC is the improvement of the principles that govern commercial transactions in the USA.
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How many newtons of force are needed to accelerate a 1,875 kg object at a rate of 1. 5 m/s2?.
Answer:
2812.5 N
Explanation:
We know that
F = ma
F = 1875 × 1.5
F = 1875 × 15/10
F = 2812.5 N
Answer:
Hope this helps
Explanation:
2812.5N
Discuss 3 questions you should ask yourself when assessing your fitness and explain how your answers determine your fitness to drive.
How many integers between 500 and 1000 contain both the digits 3 and 4.
Any number between 500 and 1000 that contains both 3 and 4 must be of the form x34 or x43, where x is an one of {5, 6, 7, 8, 9}. There are 2 possible forms for each of the 5 choices for x, so there are 2 × 5 = 10 such integers.
pizza with peparoni or pizza with mustard and pinaple choose wisley ; -)
Answer:
This is an SAT question, so I will be proofreading this for grammar.
The first pizza should be capitalized.
Peparoni is spelled wrong
Pinaple is spelled wrong
wisely is spelled wrong
There should be a period between "pinaple" and "choose"
The first half beginning with "pizza" and ending with "pinaple" is an incomplete sentence.
By the way, I would prefer pineapple.
When you stifle a sneeze, you can damage delicate tissues because the pressure of the air that is not allowed to escape may rise by up to 45 kpa.
so if i keep holding in my sneezes could i die
A cart with an unknown mass is at rest on one side of a track. A student must find the mass of the cart by using newton’s second law. The student attaches a force probe to the cart and pulls it while keeping the force constant. A motion detector rests on the opposite end of the track to record the acceleration of the cart as it is pulled. The student uses the measured force and acceleration values and determines that the cart’s mass is 0. 4kg. When placed on a balance, the cart’s mass is found to be 0. 5kg. Which of the following could explain the difference in mass?.
Answer:
The track was not level and was tilted slightly downward.
Explanation:
The track was not level and was tilted slightly downward.
Which image do you think best illustrates the tragedy of the fire? why? give at least three reasons for your choice in your response.
9-13 and 17
Pictures 9-13 actually show dead people, who died trying to escape the fire. These were people who had lives, families, etc. who never knew that an ordinary work day would turn tragic. The sheer number of people seen truly shows how horrific of an event this was, with their bodies being broken and lifeless.
17 shows the aftermath of the fire. What was once a busy, bustling workplace full of life was now lonely and deserted, with the ashes of equipment, clothing, and crushed memories. The scorched-black room and messy area really give off that "neglected and forgotten" feel. Even the officer contributes to the empty feel of the room, as he's the only one seen there, all alone.
Pictures 9 through 13 show actual deceased victims who perished while attempting to flee the fire. These were folks with families, lives, and other responsibilities who had no idea that a routine workday would end tragically.
What is Fire?The observable result of the combustion process, a unique kind of chemical reaction, is fire. It happens when some kind of fuel and atmospheric oxygen are combined. The end result of the chemical reaction is entirely distinct from the initial component.
The heat from the heat causes some of the cellulose material that makes up the wood to break down when the wood reaches about 300 degrees Fahrenheit (150 degrees Celsius).
The molecules of the complex disintegrate at a temperature of roughly 500 degrees F (260 degrees C) for wood, at which point the atoms recombine with oxygen to generate water, carbon dioxide, and other products. They burn, in other terms.
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The respiratory system of an elephant functions in a similar way.
Answer:
The organelle in a single-celled organism which performs gaseous exchange like the respiratory system of an elephant is the plasma membrane.
The respiratory system of elephant functions in a similar way The organelle in a single-celled organism which plays gaseous change just like the respiration machine of an elephant is the plasma membrane.
What is The respiration system?In animals is concerned in gaseous change. During animal respiration, oxygen is taken in and carbon dioxide is launched in conjunction with molecules of ATP.
In a single-celled organism, the plasma membrane is concerned in gaseous change with the outside simply because the respiration machine of the elephant does.
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You have been injured in the laboratory (cut, burned, etc.). First you should
Answer: tell a teacher or go to school nurse or call a parent.
Explanation:
The principle that safer investments tend to offer.
Explanation:
Risk Return relationship
Answer:
Whole test
1. identify the risk and potential losses
2. Debt financing
3. insurance covering losses resulting from medical and hospital expenses as well as income lost form injury or disease.
4. Commercial paper
5. Equity financing
6. Bonds
7. Cash-flow management, financial control, and financial planning
8. Liability
9. insurance
10. Risk- return relationship
Why doesn’t people like me?
they're fake people. trust me i've been in this stage of life multiple times
just keep your head and find the true ones :))
what this is brainly
The chemical equation below shows the combustion of methane (ch4). Ch4 + 2o2 right arrow. Co2 + 2h2o the molar mass of oxygen gas (o2) is 32. 00 g/mol. The molar mass of carbon dioxide (co2) is 44. 01 g/mol. What mass of co2, in grams, will form when 8. 94 g o2 completely react?.
Taking into account the reaction stoichiometry, 6.15 grams of CO₂ are formed when 8.94 grams of O₂ reacts completely.
In first place, the balanced reaction is:
CH₄ + 2 O₂ → CO₂ + 2 H₂O
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
CH₄: 1 mole O₂: 2 moles CO₂: 1 mole H₂O: 2 molesThe molar mass of the compounds is:
CH₄: 16.04 g/mole O₂: 32 g/moleCO₂: 44.01 g/moleH₂O: 18 g/mole
Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
CH₄: 1 mole× 16.04 g/mole= 16.04 gramsO₂: 2 moles× 32 g/mole= 64 gramsCO₂: 1 mole× 44.01 g/mole= 44.01 gramsH₂O: 2 moles× 18 g/mole= 36 grams
Then the following rule of three can be applied: if by reaction stoichiometry 64 grams of O₂ form 44.01 grams of CO₂, 8.94 grams of O₂ form how much mass of CO₂?
[tex]mass of CO_{2} =\frac{8.94 grams of O_{2} x44.01 grams of CO_{2} }{64 grams of O_{2}}[/tex]
mass of CO₂= 6.15 grams
Finally, 6.15 grams of CO₂ are formed when 8.94 grams of O₂ reacts completely.
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brainly.com/question/24741074 brainly.com/question/24653699 brainly.com/question/23871710How to make hydroxyquinoline at home with grapefruit and lemon.
Hydroxyquinoline CANNOT be made from grapefruit and lemon because it can only be synthesized and is not a natural compound.
With this in mind, we can see that hydroxyquinoline is usually used to salve the effects of a freshly cut cow udder as it is applied to soothe skin.
Furthermore, it can be chemically gotten when glycerol is mixed with 2-aminophenol alongside with sulphuric acid and this cannot be gotten from grapefruit and lemon.
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In order to form methane, one carbon atom shares electrons with four hydrogen atoms. Which of these best describes why methane would form in nature?.
The amount and the concentration of a salt solution.
Answer:
28 g
3.4 g
Explanation:
These problems only make sense if the percentage is by weight. To find the amount of salt, multiply the amount of solution by the percentage that is salt:
a) (80 g)(35%) = 28 g . . . . weight of salt
__
b) (20 g)(17%) = 3.4 g . . . . weight of salt
_____
Comment on percent
You know that % means /100, so 35% = 35/100 = 0.35.
Maximize the objective function p = 5x + 3y for the given constraints. X ≥ 0 y ≥ 0 3x + 6y ≤ 48 2x + 8y ≤ 56.
The maximized value of the objective function is 38
The objective function is given as:
Max P = 5x + 3y
The constraints are given as:
3x + 6y ≤ 48 2x + 8y ≤ 56x ≥ 0 y ≥ 0To do this, we make use of the graphical method.
See attachment for the graph of the constraints.
From the graph, we have the following feasible point
[tex](x,y) = (4,6)[/tex]
Substitute 4 for x and 6 for y in the objective function.
[tex]Max\ P = 5x + 3y[/tex]
So, we have:
[tex]P = 5 \times 4 + 3 \times 6[/tex]
[tex]P = 20 + 18[/tex]
[tex]P = 38[/tex]
Hence, the maximized value of the objective function is 38
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Answer:
Explanation:
If an objective function has a maximum value, it will occur at one of the vertices of the feasible region (i.e., the solution region for the system of inequalities). The feasible region's vertices occur at (0, 0), (0, 7), (4, 6), and (16, 0).
Use the x- and y-value from each vertex to evaluate the objective function P = 5x + 3y.
(x, y) 5x + 3y P
(0, 0) 5(0) + 3(0) 0
(0, 7) 5(0) + 3(7) 21
(4, 6) 5(4) + 3(6) 38
(16, 0) 5(16) + 3(0) 80
Therefore, the maximum of the objective function is 80.
Amylase is an enzyme that converts carbohydrate polymers into monomers. Glycogen synthase is one of the enzymes involved in converting carbohydrate monomers into polymers. Which of the following best explains the reactions of these enzymes?.
Amylase break covalent bonds whereas glycogen synthase form covalent bonds.
Amylase is an enzyme that aids in the addition of a water molecule to break covalent bonds thereby converting carbohydrate polymers into monomers whereas glycogen synthase aids in the removal of a water molecule to form covalent bonds converting carbohydrate monomers into polymers.
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Promotion of learning and respect for teachers are among the traditional values of the vietnamese.
The Vietnamese believe that One of the traditional values of the Vietnamese people is the promotion of learning and the respect for teachers.
As Vietnam’s educational culture was sparked by Chinese influence, the roots of education come from the country’s belief in Confucianism.
The Vietnamese believe that One of the traditional values of the Vietnamese people is the promotion of learning and the respect for teachers. In the Feudal and Colonial periods, teacher’s were seen to have more importance than parents; their position was “only lower than the king”.
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Who is cleopatra in the caesars commercial with the mannings.
The cleopatra in the caesars commercial with the mannings is Halle Maria Berry.
Halle Maria Berry can be described as an influential actress as well as a producer. She was was known as one of the American's Miss USA pageant .
In the caesars commercial, the cleopatra is Halle Maria Berry because according to Archie, who said i met Caesar and Cleopatra at Miami, he was referred to Halle Maria.
We can conclude that Halle Maria Berry serves as cleopatra in the caesars commercial with the mannings.
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John believes that the amount of sleep he gets the night before a test and his score on that test are inversely related. On his first exam, he got eight hours of sleep and scored 70 on the exam. To the nearest tenth, how many hours does john believe he must sleep the night before his second exam so that the average of his two exam scores is an 80?.
John will need to sleep for 10.3 hours before his second exam so that the
average of his two exam scores is an 80.
We were given
8 hours of sleep = 70
To get average of 80
70+ x = 80
2
Cross multiply:
70+x = 160
x= 160-70
= 90.
If 8 hours of sleep = 70
x hours of sleep = 90
Cross multiply
8× 90 = 70 × x
720 = 70x
x = 720/70
x = 10.2857
≈ 10.3 hours of sleep
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What happens to the temperature of an object when the particles are moving faster.
Answer:
heat is increased
Explanation:
this increases the kinetic energy of particles inside an object , and they collide on the walls of an object
The formula for electrical power is. Which is the equivalent equation solved for i?.
Answer:
p/v=I
Explanation:
Sorry I’m so late
A rock is projected from the edge of the top of a building with an initial velocity of 12. 2 m/s at an angle of 63° above the horizontal. The rock strikes the ground a horizontal distance of 25 m from the base of the building. Assume that the ground is level and that the side of the building is vertical. What is the time?.
The rock travels a horizontal distance x after time t of
x = (12.2 m/s) cos(63°) t
If it hits the ground 25 m away from where it was thrown, then for some time t we have
25 m = (12.2 m/s) cos(63°) t
Solve for t :
t = (25 m) / ((12.2 m/s) cos(63°))
t ≈ 4.5 s
Which of these is not one of the standard placeholders on the handout master?.
The option that is not one of the standard placeholders on the handout master is;
D: Author
The missing options are;
a. Date
b. Header
c. Page Number
d. Author
The Handout Master tab is the tab in Microsoft power point that is used to edit the appearance of presentation handouts which includes the headers, footers, layout and the background. Now, any changes that are made to the handout master will definitely appear on all the pages of the printed copy of the handout. Looking at the options, the only one that doesn't appear as a standard placeholder in handout master is Author.Read more about handout master at; https://brainly.com/question/12327785
Gerri purchases a coupon book with discounts for her favorite coffee shop. Every coupon for the coffee shop offers the same discount. The table shows her total savings, y, based on the number of coupons, x, used from the book. What are the slope and y-intercept of the line represented by the points shown in the table? slope: 2, y-intercept: –20 slope: 2, y-intercept: 10 slope: 5, y-intercept: –20 slope: 5, y-intercept: 10.
Answer: slope: 2, y-intercept: –20
Explanation:
Y-intercept is the point at which the line intersects the y axis- meaning x = 0
From the table y = -20 when x= 0
y-intercept: -20
To find the slope
m = deltaY/deltaX = -20+10/0-5 = 2