Answer:
layers of cotton lining the interior
Explanation:
A runner starts at rest and accelerates until reaching a speed of 9.0 m/s. A graph of her velocity over time is shown below
Velocity
m
15+
12+
9
6
3+
Time (s)
1
3
6
9
12 15 18
What is her average acceleration from 0 to 9.0 seconds?
Answer:
0.67 m/s^2
Explanation:
khan academy
A rotating pulley completes 12 rev in 4 secs determine the average angular velocity in rev /s, rpm and in rad/s
Answer: The average angular velocity for a rotating pulley is 3 rev/s, 180 rpm, 6π rad/s.
The pulley turns rotating when the rope tugged and completes 12 rev in 4 seconds.
How to determine the average angular velocity?If we consider a pulley rotating in a same axis, every point in the pulley has the same angular velocity.
Formula for angular velocity:
ω = Δθ / Δt
The average angular velocity can be defined as the ratio of the angular displacement to the time.
θ = 12 rev, t = 4s
1 revolution = 2π rad
It can be solved as:
Revolutions / second:
rev / s = 12 / 4
= 3
Revolutions per minute:
rpm = ( 12/4) × 60
= 180
Radian / second :
rad/s = (12×2π / 4 )
= 6π
Learn more about the average angular velocity,
https://brainly.com/question/12198455
#SPJ2
what is the speed of sound in temperature of 56 degrees C?
Answer:
316 meters/second.......Answer:
316 meters/second
Moral Dilemma A man is sitting at home worrying about the fact that his daughter needs a major surgery in order to continue living, but he does not have the money to pay for it. He has asked family and friends to help with the cost of the surgery, but he was only able to raise about a quarter of what the surgery costs. He then remembers that he has power of attorney (i.E., control over someone else's finances/legal issues) for his out-of-touch-with-reality, but healthy, 85-year-old father. The man could, without anyone knowing, use his father's money to pay for the surgery. However, this would leave his father with only one year of living expenses. The man decides to take his father's money for his daughter's surgery. Should the man have done that? Why?
Answer:
Mostly with aid of Kohlberg 's moral growth theory, I clarify this answer, which would also be separated into three stages under which this particular problem is illustrated below.
Explanation:
Pre conventional Stage:The daughter's father would think about either the penalty during that point if he commits any wrongdoing or breaches laws to save her daughter. But another way to make that happen for surgery is that a person cares about either the legislation and rules as well as the significance of respecting them throughout the pre-conventional process. He will also attempt to establish its insight into solving these problems.
Conventional Stage:As per the traditional process of the spiritual psychosocial development of Kohlberg, her father would think of civilization because there are conventions that unless he borrows money of his dad again for the procedure of their daughter, culture would label him greedy or prejudice against him to pay the profits of his father despite his consideration.
Post conventional Stage:As per this argument, he might determine for her child as well as father in his philosophy including perspectives, which means that his father is not in the situation of requesting credit, but because he's in a position to give a recommendation, therefore he certainly gives authorization rescue her grandchildren even though she is small and has several activities to do in hers life. And subsequently, with emerging profits, he will take care of his father as well as daughter, and nowadays focus says their daughter wants treatment to recover.
Which one of the following is not a fundamental physical quantity??! A. Temperature b. Current c. Area d. Mass
Answer:
Out of this, Area is not a fundamental physical quantity.
A 20 N model rocket launched vertically is clocked at 25 m/s when it is 15 m above the ground (and has expended a negligible amount of fuel). Use the work–energy principle to find the rocket’s initial speed.
Answer:30.3 m/s
Explanation:
what does the galaxy made of ?
List two objects here on Earth that are sources of radiant energy. How can you tell they emit radiant energy?
How many meters did the car go in the first 4 seconds?
Students have been assigned to write reports on cell organelles. Eric’s report is about the organelle that supports and gives structure to plant cells. Which organelle is Eric writing about?
A. Chloroplast
B. Cell wall
C. Mitochondria
D. Nucleus
Cell wall is that organelle that gives structure to plant cells. A cell wall is a structural layer that surrounds certain types of cells. It can be hard, flexible, or rigid at times.
What is a cell wall?A cell wall is a structural layer that surrounds certain types of cells. It can be hard, flexible, or rigid at times. It functions as a filtration system as well as structural support and cell protection. Many eukaryotes, including animals, lack cell walls, though fungi, algae, and plants, as well as the vast majority of prokaryotes, do (except mollicute bacteria). One of their primary functions is to act as pressure channels, preventing the cell from over-expanding when water enters.The polysaccharides cellulose, hemicelluloses, and pectin make up the primary cell wall of land plants. Other polymers, such as lignin, suberin, and cutin, are frequently anchored to or embedded in plant cell walls.To learn about organelles refer to:
https://brainly.com/question/16601148
#SPJ2
A block slides down a rough ramp with a 30-degree incline as shown.
Which diagram represents the forces acting on the block?
Answer:
Image 4 ?
Explanation:
Answer:
Image 4
Explanation:
Took Test
what should you do if the exercise schedule you make for yourself is not working out well by midweek
Answer:
I will find a solution.
Explanation:
i will figure out the problem,then solve it
How does a simple machine facilitate our work
Answer:
Simple machines are useful because they reduce effort needed for people to perform tasks beyond their normal capabilities.
Explanation:
Answer:
Simple machines are useful because they reduce effort needed for people to perform tasks beyond their normal capabilities.
Explanation:
a box is pushed along the ground with a force of 20N. If the box is pushed 0.5M.How much work done is on it?
Answer:
10J
Explanation:
work (W)= force (F)× distance (d)
W= 20N × o.5m
=10J (Joule)
Answer:
10 joules(j)
Explanation:
A scientist who conducted an experiment obtained an unexpected result. What will she most likely do with the unexpected result? leave it out of her analysis and final report stop the experiment and begin again change the procedures and try again develop a new question to be investigated
Answer: stop the experinment and begin again sometimes the result of the experiment may give you unexpected results due to the fact that you may have missed a certain step or you didn't follow the procedure accurately to the dot, hence it's important to redo the experiment and see if every step was followed accurately before you can discard the results or change the procedure.
Explanation:
Answer:
d
Explanation:
A wagon with a mass of 35 kg is pulled so that it accelerates from 0 m/s to 30 m/s in 15
seconds.
Remember to show all work!
a. What is the acceleration of the wagon?
b. What is the force required to get this acceleration?
Plz help me
Explanation:
a = v-u/t
a is the acceleration of the body
v is the final velocity
u is the initial velocity
t is the time
Given
v = 30m/s
u = 0m/s
t = 15secs
Substitute
a = 30-0/15
a = 30/15
a = 2m/s²
Hence the acceleration of the wagon is 2m/s²
b) Force = mass * acceleration
Given
Mas of the wagon = 35kg
acceleration a = 2m/s²
F = 35*2
F = 70N
Hence the force required to get this acceleration is 70N
Which sentence describes Newton's first law?
A. Forces always come in pairs that have the same magnitude.
B. The action force applied by one object to another is opposite in
direction to the reaction force.
C. It takes a larger net force to accelerate an object at a greater rate.
D. Unbalanced forces cause an object to move.
SM
[tex]\Large{\red{\bf{\blue{\dag} Answer:-}}}[/tex]
Newton's First Law of Motion :
An object stays in rest or in uniform motion unless and until compelled by an external unbalanced force . This is also known as " Law of Inertia " .
Here this statement is best represented by the statement : Unbalanced forces cause an object to move. [ option c ]
More to know :-
Newton's 3 laws of motion :-
Newton's First Law of Motion :-
It states that an object stays in rest or in uniform motion unless and until compelled by an external unbalanced force . This is also known as " Law of Inertia " .
Ex - (i) We tend to fall backwards while standing in the bus , when it starts suddenly.
(ii) We tend to fall forward while standing in the bus , when it stops suddenly.
Newton's Second Law of Motion :-
It states that the rate of change of momentum is directly proportional to the applied force in the direction of the force . That is ∆p [tex]\propto[/tex] Force .
Ex - (i) When we push car & a truck with same force the car will have Greater acceleration due to less mass . (Imaginary case ).
(ii) We feel easy to push a empty cart than a full cart .
Newton's Third Law of Motion :-
It states that every action has equal and opposite reaction .
Ex - (i) We are able to walk on ground due to Newton's third law of motion .
(ii) When we push wall it also applies equal and opposite force .
"Unbalanced forces cause an object to move " is the sentence that describes Newton's first law.
Describe Newton's first law.A body remains in the state of rest or uniform motion in a straight line unless and until an external force acts on it.
The object is to be rest if the velocity and acceleration are zero. When an object is in motion, velocity is not equal to zero (v ≠ 0) but acceleration (a = 0) is equal to zero. Therefore, the object will continue in motion with constant velocity in the same direction.
Example:
If we jump from a bus while moving, our body will be like still moving in the same direction of the vehicle. When your feet hit the ground, the grounds act on your feet and stop moving. You will fall because the upper part of your body didn't stop and you will fall in the direction you were moving.
If the object have the greater mass, then the object will have more inertia. Forces can change the object's motion.
Hence, Option D is the correct answer.
Learn more about Newton's first law,
https://brainly.com/question/974124
#SPJ5
For the first 10 seconds a squirrel runs 3 m/s to look for an acorn. The next 5 seconds he eats an acorn that he finds. Afterwards the squirrel runs 2 m/s back to where he started. (A) How long does it take for the squirrel to get back to where he started?
Distance covered by the squirrel to look for an acorn :
d = ( 3 m/s ) × 10 s = 30 m.
Time taken to eat an Acron is 5 seconds.
Time taken to cover distance of 30 m with 2 m/s speed is :
[tex]T=\dfrac{30}{2}\ s= 15 \ s[/tex]
Therefore, total time take to get back to where he started is ( 10+5+15 ) = 30 s.
Hence, this is the required solution.
Answer:
it wont let me commment so i need to know if the answer above is correct
Explanation:
How does the magnetic field created by the liquid outer core protect the Earth?
Answer:
The magnetic field protects the Earth from harmful particles that come from the Sun.
An object on another planet with g = 25 m/s^2 hits the ground from rest in 4 seconds. How far did it fall?
Choices:
•200.0m
•100.0m
•1000.0m
•25.0m
HELP RN PLEASSEEE!!! HELP!!
Choose all the answers that apply.
According to Newton's second law of motion:
1.objects at rest will remain at rest unless acted upon by an outside force
2.mass has an inverse relationship with acceleration
3.the greater the magnitude of force, the faster the acceleration
4.acceleration is caused by unbalanced forces
5.every action has an equal and opposite reaction
Which is a factor that keeps Earth in orbit around the sun
Answer:
Gravity
Explanation:
Newton contributions
lily took 57 seconds to walk from schoolroom to library. if the distance between the classroom and library was 38m, at what average speed did lily walk in m/min?
Answer:
7mph
Explanation:
please elp! will mark BRAINLIEST
Answer:
Help with what
Explanation:
binary ionic compounds are called salts. true or false
Answer:
True
Explanation:
APEX APPROVED
awnser thiss i need awnsers
Answer:
B
Explanation:
Density = mass / volume
Less dense objects float to the surface so if the liquid becomes 1000 kg/m3 then it is the densest thing in the mixture, except for Q which has a density = to that of the water so it will stay in place around the middle, since the other two are more dense they will go to the bottom of the container.
can energy change in physical change
4. Hijackers are taking over a plane, They tell the pilot to get to Spain as fast as possible. The plane goes from 900
km/hr (beginning speed) to 1140 km/hr (final speed) in just 6 seconds. What is the acceleration of the plane?
Branden ran at 6 m/s for a time of 300s. How much distance did he cover during his run?
Answer:
The covered distance was 1800 [m]
Explanation:
In order to solve this problem we must use the following formula of kinematics. It is important to make it clear that Branden's speed never changes during that time, or therefore the speed is constant.
[tex]x = x_{o}+v*t\\[/tex]
where:
x = distance [m]
Xo = initial position = 0
v = velocity = 6 [m/s]
t = 300 [s]
Now replacing we have:
x = 0 + (6*300)
x = 1800 [m]
When you sit in a chair, your body exerts a downward force on the chair. What
is the reaction force?
A. The floor pushes up on the chair.
B. The chair pushes down on the floor.
C. Earth's gravity pulls up on the chain
D. The chair pushes up on your body.
Answer:
ITS D !!!
Explanation:
IN ME WE TRUST
When you sit on the chair, your body will exert a downward force and in reaction, the chair pushes up on your body. Hence, option D is correct.
What is a Reaction Force?A building experiences a reaction force when it rests against another object. Calculating the reaction forces at the supports as a result of the forces operating on the beam is a necessary step in the analysis of a beam structure. The reaction forces can be calculated using a free body diagram of the entire beam.
Corrosion can be caused by reaction forces. For instance, due to the system's increased stiffness, reaction forces increase when bearing clearances are reduced from 350 mm to 150 mm.
According to the question, when the body will exert a downward force that is mg due to gravity, the chair will make a normal reaction force which will be equal to the force applied by the body on the chair.
To get more information about Reaction Force :
https://brainly.com/question/14853868
#SPJ5