Using conservation of momentum, we will see that the new velocity is 12 m/s.
How to use conservation of momentum?
We know that the momentum un a closed system must be conserved, in this case, our system is the cart and the block.
Initially, the cart moves with a velocity of 15 m/s, and has a mass of 800 kg, then the initial momentum is:
P = 15m/s*800kg = 12,000 kg*m/s
Then a block of 200kg is dropped on the cart, so the new mass of the cart is 1,000 kg, then the new momentum is:
P = 1,000kg*V'
Where V' is the new velocity, and by conservation of momentum, we must have that:
12,000 kg*m/s = 1,000kg*V'
( 12,000 kg*m/s)/1,000kg = V' = 12 m/s.
The new velocity of the cart is 12 m/s.
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Based on the diagram of von thünen’s model of agricultural land use, which statement best explains the connection between land value and agricultural production regions?.
The statement that best explains the connection between land value and agricultural production regions is that;
Grain crops needs extensive acreage and are said to to be grown on land that is little costly and farther away from the market than on other agricultural land uses.What is the Von Thunen model of agricultural land use?The man Von Thunen was said to have given the idea of a land-use model in the urban and rural landscapes that are said to surround a city
His idea is one that shows how economic rent lowers from the center of a city to its other parts. His theory on the system of land use around a city is one that there is no trade alliance with any other kind of country.
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Which statement best explains the working principle of an electric motor.
Answer:
The principle of an electric motor is based on the current-carrying conductor which produces magnetic field around it. A current-carrying conductor is placed perpendicular to the magnetic field so that it experiences a force.
Explanation:
In this exercise we have to use the knowledge of electric motors and explain that they work through a closed circuit and a source.
What are electric motors?Electric motors are electrical machines that transform electrical energy into mechanical energy. There are many types of electric motors, and we can basically separate them into three large groups which are direct current motors, alternating current motors and universal motors.
In a simpler way, we can say that they are motors that use a closed system that has a source and an electric current.
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In what way can you show a sense of adaptability to the diverse philippines literary history.
How much heat is produced by burning 4. 00 moles of acetylene under standard state conditions?.
Answer:
-5198
Explanation: One mole of acetylene produces -1299.5 kj of heat. Therefore, we would need to multiply -1299.5 by the 4.00 moles to get our answer
Kendra sells gourmet boxes of cookies. One box of cookies costs kendra $6. 75 to produce. She sells her boxes of cookies for $10. What is kendra's return on investment (roi)?.
Answer:48%
Explanation:
I took the test
A car’s engine generates 100,000 w of power as it exerts a force of 10,000 n. How long does it take the car to travel 100 m?.
Answer:
10
Explanation:
Engine generates 100,000\ W power
Force exerts F=10,000\ N
Distance traveled d=100\ m
work done is given by
W=F\cdot d\\W=10,000\times 100\\W=10^5\ J
Also, Energy is given as
\Rightarrow E=P\cdot t
Insert the values
\Rightarrow 10^6=100,000\times t\\\\\Rightarrow t=\dfrac{10^6}{10^5}\\\\\Rightarrow t=10\ s
A student pushes a 51. 5 kilogram bookshelf across a smooth floor with a net force of 67 n.
Assuming a student pushes a 51. 5 kilogram bookshelf across a smooth floor with a net force of 67 n the acceleration is 1.30m/s².
AccelerationUsing this formula
Acceleration= Net force/Mass of bookshelf
Where:
Mass of bookshelf =51.5 kilogram
Net force =67 Newton
Let plug in the formula
Acceleration=67n/51.5 kilogram
Acceleration=1.30 m/s²
Inconclusion the acceleration is 1.30m/s².
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Arrange the given compounds based on their relative brønsted acidities.
Arranging the given compounds based on their relative bronsted acidities :
I.e. Strongest to weakest
H-Br ---> H-F --- > H-SH -----> H-NH₂ ----> H-CH₃Factors affecting relative bronsted aciditiesThe arrangement of the compound based on their relative bronsted acidities is dependent on certain factors which are :
Stability of the conjugate base increment Increase in electronegativity ( this leads to increase in holding a negative charge ).Increase in size ( leads to increase in holding negative charge due to large electron cloud ).From the list of compounds given F⁻ is less stable than Br⁻ and this makes H-Br more stronger than H-f
Hence we can conclude that from Strongest to weakest
H-Br ---> H-F --- > H-SH -----> H-NH₂ ----> H-CH₃ is the correct arrangementLearn more about relative bronsted acidities : https://brainly.com/question/148529
Attached below is the missing data related to your question
What is the value of δg at which a reaction becomes spontaneous? express your answer numerically.
A spontaneous reaction must have a negative change in free energy.
Change in Free energyThe change in free energy can be used to decide the spontaneity of a chemical reaction. We must recall that a spontaneous reaction must have a negative change in free energy. A reaction at equilibrium has a change in free energy value of zero. A reaction that is not spontaneous have a positive change in free energy.
Since the numerical values are missing in the question, we can not compute the numerical change in free energy.
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Canis familiaris (dogs) and canis lupus (wolves) are a different(1 point) brainly.
Canis familiaris (dogs) and canis lupus (wolves) are a different subspecies.
What are subspecies?It is a group of individuals of a species that, in addition to its own characteristics, have in common other morphological characteristics that distinguish them from other subspecies.
Characteristics of subspeciesIt is the only taxonomic rank below species (infraspecific).Canis lupus is the species, which includes both subspecies dogs and wolves.The dog is a domestic subspecies of the wolf, according to the comparison of the genetic maps of both they belong to the same species.Therefore, we can conclude that the subspecies is a taxonomic category that, based on its name, is understood to be below the species.
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Answer:
Species
Explanation:
Hope this helps
Refer to figure 6-9. In this market, a minimum wage of $7. 00 creates a labor.
A minimum wage of $7.00 in the market creates a labor that is binding and creates unemployment.
What is minimum wage?A minimum wage refers to a ceiling wage that must be paid to the labor.
Hence, since the minimum wage of $7.00 is imposed on the market, the amount does creates a labor that is binding and creates unemployment.
Therefore, the Option C is correct.
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Which of the following groups of instruments do tipanu, aruding and beberek fall under?.
Answer:
chordophone is the anser
Explanation:
James wants to carpet the room shown in the diagram. If he uses 12 ft wide carpet strips, how many linear feet will he need to buy?.
Answer:
11
Explanation:
The room is rectangular. The required carpet can be measured by dividing the area of the room by 12. 60 linear feet of carpet is required. Therefore, option D is correct.
What is the area of a rectangle?A rectangle is a four-sided polygon with four right angles (90-degree angles). It is a type of quadrilateral, which means it has four sides. Opposite sides of a rectangle are parallel and congruent (equal in length). The two pairs of opposite sides of a rectangle are also equal to each other.
The formula for calculating the area of a rectangle is: Area = Length x Width
Given information,
Width of the carpet = 12 feet
Now,
The area = (40 x 24) - (20 x 12)
Area = 960 - 240 = 720 square feet
The required linear feet of the carpet is:
720 / 12 = 60
Therefore, option D is correct.
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#SPJ2
Your question is incomplete, most probably the full question is this:
James wants to carpet the room shown in the diagram. If he uses 12 ft wide carpet strips, how many linear feet will he need to buy?
A) 11
B) 12
C) 20
D) 60
Paul, colin and brian are waiters. One night the restaurant earns tips totalling £71. 10. They share the tips in the ratio 2:3:4. How much more does colin get over paul?.
A flashlight bulb is connected to a dry cell of voltage 2. 25 v. It draws 35. 0 ma (1000 ma = 1 a). What is its resistance?.
Answer:
1000ma=1a
35.0ma=?
35.0ma÷1000ma×1a (ma cancels ma and you left with a )
answer =0.035
Choose the best answer. Where might you find a lot of sea life? el mar el teatro el estadio el monumento.
Answer:
A :el mar
Explanation:
trust me, i took the test. it means "the sea"
Answer: A. El mar.
Explanation: On Edge!
Block a rests on top of block b as shown in (figure 1). The table is frictionless but there is friction (a horizontal force) between blocks a and b. Block b has mass 6. 00 kg and block a has mass 2. 00 kg. If the horizontal pull applied to block b equals 12. 0 n, then block b has an acceleration of 1. 80 m/s2.
The acceleration of block A is 0.6 m/s².
Net force on the blocksThe net force on the blocks is determined by applying Newton's second law of motion.
∑F = ma
Acceleration of bock AThe acceleration of block A is calculated by applying Newton's second law of motion as follows;
[tex]F_a + F_b = F\\\\F_a = F-F_b\\\\m_a a_a = F- m_ba_b\\\\a_a = \frac{F- m_ba_b}{m_a}[/tex]
Where;
Mb is mass of block B = 6 kgMa is mass of block A = 2 kg[tex]a_b[/tex] is acceleration of block B = 1.8 m/s²[tex]a_a[/tex] is the acceleration of block A = ?[tex]a_a = \frac{12\ - \ 6 \times 1.8}{2} \\\\a_a = 0.6 \ m/s^2[/tex]
Thus, the acceleration of block A is 0.6 m/s².
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You roll a six-sided die twice. What is the probability of rolling a 2 and then a 6?.
Answer:
1/6x1/6=2.777 per cent
Explanation:
A new coat is regularly priced at $50. It is on sale with a discount of 10%. Approximately how much would be saved by purchasing the coat at the sale price?.
Answer:
$5 dollars.
Explanation:
Given the following question:
10% of 50
In order to find how much, we would save by purchasing the coat, we calculate the percentage.
[tex]\frac{50\times10}{100} =50\times10=500\div100=5[/tex]
[tex]=5[/tex]
We would save "five dollars" by purchasing the coat at the sale price.
Hope this helps.
What is the kinetic energy of a 1. 0-kg billiard ball that moves at 5. 0 m/s?.
Answer:
12.5 J
Explanation:
The formula for a kinetic energy (KE) is
KE = 0.5*m*v²
Given m = 1.0 kg, v = 5.0 m/s, so
KE = 0.5*1.0*(5.0)² = 12.5 J
The toadfish makes use of resonance in a closed tube to produce very loud sounds. The tube is its swim bladder, used as an amplifier. The sound level of this creature has been measured as high as 100 db.
Answer:
down below ok hope it helps
Explanation:
How did new leaders gain power in both Germany and Japan after World War I?
through the use of violent tactics
through the strength of democracy
by restraining the influence of fascism
with the help of free and fair elections
A swim team ordered 36 jackets that each cost the same amount. The total cost of the order was $1,116. Let c be the cost of each jacket. How much did each jacket cost? choose the equation that represents this problem.
Answer:
$31
Explanation:
To find the cost per jacket, divide:
$1,116 ÷ 36
Each jacket costs $31.
Choosing 3 toppings for your sundae out of a list of 15. Permutation or not?.
Since the order is not important, the combination formula is used.
When to use the combination and the permutation formula?If the order in which the options are taken is important, permutation is used.Otherwise, if the order in which the options are taken is not important, combination is used.In this problem, the order in which the toppings are chosen is not important, for example, chocolate and strawberry is the same topping as strawberry and chocolate(if we considered 2 toppings), hence it is a combination.
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One of the physicians concludes that intermountain healthcare isn’t really serious about improving teamwork. The physician asks mark allen if it is really important to change teamwork behaviors. Mark reemphasizes the importance of teamwork and professionalism in the organizations.
The skills needed to focus on improving active listening skills include:
Give speakers clear nonverbal evidence that you are listening attentively, including leaning toward the speaker, maintaining eye contact, and not fidgeting.Show the speaker respect by not interrupting and by using an inclusive, friendly, and sharing tone.Follow up on unusual or inconsistent communication cues from the speaker, such as changes in tone, vocabulary, and body language to determine the real message the speaker is trying to send.What is active listening?Active listening means the practice of preparing to listen, the observation of the verbal and non-verbal messages that are being sent, and then giving appropriate feedback.
From the complete question, Mark Allen, is the Clinical Information Systems Manager at Intermountain Healthcare and he is working with a team of physicians, nurses, administrators, and other healthcare providers in order to improve the quality of healthcare at Intermountain Healthcare.
Since he wants to implement a skill development program on active listening skills, it is important to focus on improving active listening skills.
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A first order reaction initially contains 1. 00 × 10²⁰ molecules. If the reaction has a half-life of 20. 0 minutes, how many molecules remain unreacted after 80. 0 minutes?.
Using proportions, it is found that [tex]1.25 \times 10^{19}[/tex] molecules remain unreacted after 80. 0 minutes.
What is a proportion?A proportion is a fraction of a total amount.
In this problem, the half-life of the reaction is of 20 minutes, hence:
After 20 minutes, 50% of the molecules are unreacted.After 40 minutes, 25% of the molecules are unreacted.After 80 minutes, 12.5% of the molecules are unreacted.Then:
[tex]0.125 \times 10^{20} = 1.25 \times 10^{19}[/tex]
Hence:
[tex]1.25 \times 10^{19}[/tex] molecules remain unreacted after 80. 0 minutes.
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What are the opposing arguments for gender equality brainly.
The opposing arguments for gender equality is that females are more vulnerable in the society.
What is Gender equality?Gender equality is a situation in which people of all genders have equal rights, responsibilities and opportunities.
The opposing arguments for this is that females are more vulnerable to incidences such as violence, hate speech etc. This therefore are the opposing arguments on why gender equality isn't practised in all countries.
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Which law of physics plays the biggest role in space?.
A forest full of the many kinds of trees and grasses is an example of a.
Answer: its an example of a Community.
Hope this helps!
If the circle shown is rotated and traced 360° along the dotted path, the resulting three-dimensional figure would look like a picture of a.
Answer:
It would be a donut
Explanation:
I took the test
There are two pieces of copper. Piece a is at 70 degrees, while piece b is at 150 degrees. Which piece has more thermal energy?.
The piece has more thermal energy is Piece B, because its particles move faster.
What is Thermal energy?This is known to be a type of power that is created by atomic and molecular particle movement that is present within a substance/system.
The piece that has a greater thermal energy is the piece that is said to have higher temperature that is Piece B has particles do move faster.
See options below
Piece A, because its particles move slower
Piece B, because its particles move faster
Piece A, because its particles move faster
Piece B, because its particles move slower
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