The acceleration of the skier over the distance traveled is 10.38 m/s²
The given parameters;
Initial velocity of the skier, u = 56 m/sDistance covered by the skier, s = 151 mAcceleration is defined as the change in velocity per change in time of motion.
The magnitude of the acceleration of the skier is calculated as follows;
[tex]v^2 =u^2 - 2as\\\\[/tex]
where;
v is the final velocity at the end of 151 m = 0
[tex]0 = 56^2 -(2\times 151)a\\\\302a = 3136\\\\a = \frac{3136}{302} \\\\a = 10.38 \ m/s^2[/tex]
Thus, the acceleration of the skier over the distance traveled is 10.38 m/s²
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A jumbo jet collides with a sparrow. If neither exerts a greater force of impact, which experiences greater acceleration and why
Answer:
The sparrow experiences a Much greater acceleration because of its smaller mass.
Explanation:
a = F/m With a constant force, acceleration is inversely proportional to mass.
HELP PLEASE!
A book sits motionless on a table. Which statement is true?
The downward force is greater than the upward force on the book.
There are no forces acting on the book.
The upward force is greater than the downward force on the book.
The forces acting on the book are balanced by each other.
Answer:
I think the second one! So sorry if it's wrong!
Explanation:
Because if it's sitting motionless, then nothing is happening to it.
A book sits motionless on a table so the forces acting on the book are balanced by each other.
What is force?
A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
A book sits motionless on a table that means forces acting on the book are balanced by each other. As book have mass so gravitational force acting in downward but opposite to that normal force because of friction is acting that stops book to be in motion.
A book sits motionless on a table so the forces acting on the book are balanced by each other.
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Which of the following is TRUE regarding the development and growth of new neurons in the human brain?
A. The human brain has the capacity to generate new neurons throughout the lifespan.
B. There is no evidence that the human brain continues to develop new neurons after birth.
C. Glial cells of human brains continue to reproduce and grow in number through adulthood but neurons do not.
D. Animals such as primates, birds, and rodents do not experience neurogenesis
The human brain has the capacity to generate new neurons throughout the lifespan (option b).
The correct statement regarding the development and growth of new neurons in the human brain is option A. The human brain has the capacity to generate new neurons throughout the lifespan.
1. Neurogenesis, the process of generating new neurons, was once believed to be limited to early brain development and not to occur in adulthood. However, recent research has challenged this notion.
2. Studies conducted on adult brains have provided evidence of neurogenesis occurring in specific regions of the brain, such as the hippocampus, which is involved in learning and memory.
3. Neurogenesis in the adult brain involves the generation of new neurons from neural stem cells. These stem cells have the ability to differentiate into mature neurons and integrate into existing neural circuits.
4. The process of neurogenesis is influenced by various factors, including environmental enrichment, physical exercise, and certain medications.
5. It is important to note that while neurogenesis occurs in the adult human brain, the rate of neurogenesis is relatively low compared to early brain development.
6. In contrast to option B, there is evidence to support the idea that neurogenesis continues to occur in the human brain after birth and throughout life.
7. Option C is incorrect because while glial cells, a type of support cell in the brain, can reproduce and grow in number throughout adulthood, neurons also have the capacity to generate new neurons.
8. Option D is incorrect as several animal species, including primates, birds, and rodents, have been found to experience neurogenesis in various stages of their lives.
In conclusion, option A is the true statement regarding the development and growth of new neurons in the human brain, as neurogenesis can occur throughout the lifespan.
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A 5.0 kg flying squirrel is flying from a tree down to the ground at constant velocity. Consider air resistance. Diagram the forces acting on the squirrel
The free body diagram of the squirrel motion, the weight of the squirrel is acting downwards while the air resistance is acting upwards.
The given parameters;
mass of the squirrel, m = 5 kgacceleration due to gravity = 9.8 m/s²At a constant velocity downwards, the vertical acceleration is zero.
The downward force on the squirrel is calculated as follows;
W = mg - ma
W = m(g - a)
W = m(g - 0)
W = mg
W = 5 x 9.8
W = 49 N
The air resistance on the squirrel which is acting upwards is calculated as;
n = ma + mg
n = m(a + g)
n = m(0 + g)
n = mg
n = 5 x 9.8
n = 49 N
The free body diagram is presented below;
↑ n
Ο
↓ W
Thus, in the free body diagram of the squirrel motion, the weight of the squirrel is acting downwards while the air resistance is acting upwards.
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when the frequency of a wave decreases the what increases
Answer:
The wavelength
Explanation:
As the frequency decreases, the wavelength gets longer.
Roadrunner speeds up from 2m/s to 10m/s in a distance of 10m. What is his acceleration?
d = v·t + (1/2)·a·t^2
a = 10m/s^2. t = 10s
v = 0m/s. Initial velocity
d = 0·10 + 10/2 · 10^2 = 0 +5·100
d = 500m
(03.02 LC)
Which of the following is a complementary base pair for DNA?
O Adenine and cytosine
O Guanine and cytosine
O Adenine and guanine
O Cytosine and thymine
Answer:
O Adenine and guanine
Explanation:
i think tell me if im rong
Guanine and cytosine are complementary base pairs for DNA, hence option B is correct.
What is the complementary base pairing in DNA?Adenine and thymine are joined by two hydrogen bonds, whereas guanine and cytosine are joined by three hydrogen bonds.
Base pair of DNA. The nitrogen-containing bases adenine (A), thymine (T), and cytosine (C), as well as guanine (G), the couple together under normal conditions. The structure of DNA is created by the binding of these base pairs.
In order to construct the helical structure of DNA, complementary base pairing is crucial because it enables the base pairs to be placed in the most energetically advantageous manner.
Therefore, due to the fact that it permits semiconservative replication, it is also crucial in replication.
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Look at the figure below and calculate the length of side y.
A. 8.5
B. 17
12
y
C. 6
O D. 12
45
Х
Answer:
I want to say a because you want to subtract and simplify
how can you increase the sensitivity of a Mercury thermometer?
The sensitivity of a mercury thermometer can be increased by using a smaller mercury bulb, thinner wall and smaller bore. A smaller bulb contains less mercury and hence absorbs heat in shorter time. As a result it can response faster to temperature change.
Water is used to fill hot water bottles for
warming beds. A hot block of concrete
wrapped in a cloth can also be used.
Why are these two materials the best for
warming something up?
Worth 25 points!!!
Answer:
Because they both hold the heat
Vengo una ves en un minuto dos veces en un momento pero no vengo en diez años Ayudaaaaaaa
Answer:
La letra "m"
Explanation:
which is an example of qualitative data?
A) the number of golfers who use callaway clubs
B) the scores of the golfers who use callaway clubs
C) the rating that the golfers give Callaway clubs
D) the number of putts per round of golfers using Callaway clubs
Electrons are ____________ charged particles. Answer here
Answer:
negatively charged
Explanation:
Answer: electrons are negative charged
Explanation:
London lives 1200 meters south of Chick-fil-A and is thinking about going there for lunch. When she is ready to leave, she realizes she left her wallet at her Aunt's house. She walks 750 meters to her aunt's house and then 1000 meters to Chick-fil-A. It took her 30 minutes to get from her house to Chick-fil-A. What was her distance traveled?
Answer:
1750 m
Explanation:
The distance traveled is the 750 meters to the Aunt's house plus the 1000 m from there to Chick-fil-A.
750 +1000 = 1750 . . . meters traveled
What is Juan’s velocity between 0-5 seconds?
Juan’s velocity between 0-5 seconds would be 2 m/s, the slope of the position time graph represents the velocity of the object and between the 0-5 seconds slope of the line is 2.
What is Velocity?The total displacement covered by any object per unit of time is known as velocity. It depends on the magnitude as well as the direction of the moving object.
velocity= total displacement/Total time
As given in the problem we have to find the velocity of Juan between 0-5 seconds.
The displacement covered between 0-5 seconds is 10 meters.
the time taken to change position is 5 seconds,
the velocity of the Juan = 10/5
= 2 meters/seconds
Thus, its velocity of Juan comes out to be 2 meters/second.
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What is the Validity measures of a basketball bouncing
This study was aimed at testing the construct validity of the basketball basic motion skills test instrument (ITK GDBB). The research used descriptive method of 3 basketball experts in the city of Cimahi; 3 experts are the expert in basketball. The instrument used was the ITB GDBB developed by Silvy (2019) consisting of top passing, bottom passing, top service, bottom service, chest passing, bounding passing, overhead passing, and leading ball (dribbling). This instrument consists of 76 items that cover 4 domains in basketball, namely chest pass, overhead pass, bound pass, and dribbling. The validity method used the construct validity of different power types. For the reliability method, it used the Kuder Ricardson (KR) and Objectivity analysis. The results of the construct validity analysis of a total of 76 items show that the score is ranged from 0.67 to 1.00. The construct validity value of 71 items in the basketball game is in the high category (= 1.00), 5 items are in the sufficient category, the relativity score is ranged from 0.75 to 0.98, and the objectivity score is ranged from 0.89 to 0.95. The conclusion is that this test instrument can be used as a standardized basic motion skill test for standardized large ball games for validity in basic motion skills in basketball games for grade VII junior high school students.
3
Which finding would have disproved Virchow's hypothesis?
O Animalcules are not organisms.
O Animals are made of non-cell-based matter.
Plants are made of non-cell-based matter.
O Cells can generate from nonliving matter.
Answer:
the correct answer is cells can generate from nonliving matter
What is needed to complete the equation representing cellular respiration?
+ Oxygen - Carbon Dioxide + Water + Energy
O Glucose
Nitrogen
O Sunlight
ОАТР
Answer is sunlight
Explanation :
Answer:
glucose is needed
Explanation:
I just learnt it last week and here is what it says in my notes.
Oxygen is in,
water is in,
carbon dioxide is in,
engery(which is sunlight) is in,
what is not in is glucose.
in the free body diagram. what is the net force?
A) 40 N, right
B) 10 N, right
C) 80 N
D) 32 N, right
Answer:
None of the suggested solutions.
Explanation:
horizontally, net force is
60cos30 - 20 = 31.96... 32 N right
which might be their desired answer.
There is also a vertical net force component.
vertically, net force is 40 + 60sin30 - 40 = 30 N up
total net force is
√(32² + 30²) = 43.834... 44 N
θ = arctan(30/32) = 43° above horizontal right.
bro someone please help me, i need to turn this in by tomorrow first class of the day. if you can answer this page for me, please answer with a short sentence or paragraph if needed. thank you and please help me.
Answer: Sorry you I don't umderstand
Explanation:
Explaining How Temperature Affects the Speed of a Wave
Does sound travel faster in a warm room or a cold room?
Explain your answer
Answer:
Warm Room
Explanation:
Sound, like any wave, is a transfer of energy from one particle to another.
As temperature rises, each particle will have more energy; they will collide into other particles more often.
As the frequency of collisions increase, the speed of which the sound wave is transferred increases.
what characteristic feature do all anxiety disorders share?
Answer:
Something they all share is excessive worry that disturbs their normalized living style.
Question
What is the total distance traveled if you drive 5.0 miles to school, and then drive 5.0 miles back home?
10.0 miles
10.0 miles
25.0 miles
25.0 miles
0 miles
0 miles
not enough information
Answer:
10 miles
Explanation:
b/c distance all what we go 5+5=10
how did the Ojibwe protect walleye populations?
a.) they count the total number of walleye eggs that a female lays each year.
b.) did you Spears to catch walleye.
c.) they only fish for walleye at night.
d.) they said a limit on the number and size of Walleye a spearfisher can catch.
The Ojibwe protected walleye populations as D. They said a limit on the number and size of Walleye a spearfisher can catch.
Wisconsin Walleye War was a series of protests regarding the fishing and hunting rights of the Ojibwes. Wisconsin wanted to regulate the rights of the people whenever they went fishing and hunting.
The protest eventually led to the state speaking to the people. This resulted in a resolution that there should be a limit on the number and size of Walleye a spearfisher can catch.
This was necessary in order to preserve the walleye for future generations.
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in 10 minutes a heart can beat 700 times at this rate in how many minutes will a heart beat 140 times at what rate can a heart beat
Determine the MASS of the object in kg. (use g=10 m/s/s
Explanation:
Sorry but the question is incomplete
According to astronomers, how many galaxies are distributed across the observable universe?
A. several thousand
B. 100 billion
C. 1 trillion
D. 50
Answer:actually it's 120 billion so you can choose 100 billion
Explanation:
Answer: 1 billion
Explanation:
GUYS I NEED HELP RIGHT NOW
b you should know this no need to explain if you dont know well I'm sorry its b
Calculate Speed The 2-kg metal ball moving at a speed of 3 m/s strikes a 1-kg wooden ball that is at rest. After the collision, the speed of the metal ball is 1 m/s.
Assuming momentum is conserved, what is the speed of the wooden ball?
Answer:
53466kg.
Explanatiokn:
the law of conservation of energy also states that energy can be transformed ________
what will be there?