We have that for the Question "A 2kg book is held against a vertical wall. The coefficient of friction is 0.45. What is the minimum force that must be applied on the book, perpendicular to the wall, to prevent the book from slipping down the wal" it can be said that the minimum force that must be applied on the book is
F=44N
From the question we are told
A 2kg book is held against a vertical wall. The coefficient of friction is 0.45. What is the minimum force that must be applied on the book, perpendicular to the wall, to prevent the book from slipping down the wal
Generally the equation for the Force is mathematically given as
[tex]F=\frac{mg}{\mu}\\\\F=\frac{2*9.8}{0.45}\\\\[/tex]
F=44N
Therefore
the minimum force that must be applied on the book is
F=44N
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Molly does not have many activities after school, so she has plenty of time to exercise. She has never been very athletic and plans to start by exercising two hours a day five days a week. Is this a good plan?
OPTIONS:
A.
Yes, she should dive right in.
B.
No, no one can exercise that much.
C.
Yes, if she has the time there is no excuse.
D.
No, smaller goals would be better.
PLEASE NO LINKS
a.
In what ways do human beings contribute to the greenhouse effect? Select all that apply.
by using renewable energy
b. by driving gas -powered cars
by studying extreme weather events
d. by making things out of plastic
C.
Why can we predict the phases of the moon?
please dont search it up
Answer:
Every year, the moon moves about an inch away
Can someone please give me the answers to this? ... please ...
Answer:
See below:
Explanation:
What you have done seems to be correct, what we can do is just add a box into the center. For the 3rd question, we can just draw a box as nothing is happening. That is all!
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Answer:
Explanation:
good luck
i think
What is the magnitude of the force that is exerted on a 15 kg mass to give it an acceleration of 5.0 m/s/s?
Write down what unit of time, you need to use for measuring
Challenging Questions
a. The beat of your heart.
b. The duration of one period of your class.
c. The time you take to travel from home to school.
10. Analyze What is the wavelength of these waves?
Answer:
Wavelength is the distance between the two closest points that are in phase with each other along a wave.
Explanation:
which of the following is an example of the law of multiple proportions?
The answer option which is an example of the law of multiple proportions is: B) Two different compounds formed from carbon and oxygen have the following mass ratios: 1.33 g O: 1 g C and 2.66 g O: 1 g C.
The Law of Multiple Proportions is also referred to as Dalton's Law and it states that when two chemical elements combine to form more than one chemical compound, the masses (weights) of one chemical element that combine with a fixed mass (weight) of the other chemical element will always be in a ratio of small whole numbers.
According to the Law of Multiple Proportions, when two chemical elements combine to form two different chemical compound, the masses (weights) of one chemical element that combine with 1 gram of the other chemical element can be expressed as a ratio of small whole numbers.
For example, carbon and oxygen react to form either carbon monoxide and carbon dioxide.
Carbon monoxide (CO):
12 grams of C = 16 grams of O.
1 gram of C = 1.33 gram of O.
Carbon dioxide ([tex]CO_2[/tex]):
12 gram of C = 32 grams of O.
1 gram of C = 2.66 gram of O.
Ratio of oxygen (O) = 16:32 = 1:2 (Law of Multiple Proportions).
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Your question is lacking the necessary answer options, so I will be adding them here:
A. A sample of chlorine is found to contain three times as much Cl-35 as Cl-37.
B. Two different compounds formed from carbon and oxygen have the following mass ratios: 1.33 g O: 1 g C and 2.66 g O: 1 g C.
C. Two different samples of table salt are found to have the same ratio of sodium to chlorine.
D. The atomic mass of bromine is found to be 79.90 amu.
E. Nitrogen dioxide always has a mass ratio of 2.28 g O: 1 g N.
the circular disk rotates about its center. for the instant represented, the magnitude of velocity of a is 8 ft/s and the magnitude of tangential acceleration of b is 9 ft/s2. what is the magnitude of the acceleration of point a?
Answer:ddddddddddddddd
Explanation:
What is the displacement of the object from 2 seconds to 6 seconds
•4m
•8m
•16m
•24m
Answer:
,24m bolşi
Explanation:
dfgzffdsvh466ggsceaijtgcbnmzxygdcrescdrbniuyrlohahrcwehiim
Answer:
the answer is 16 m
hope this is helpful
what is gravitional force?
Answer: Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.
Explanation:
Answer:
the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface is called as gravitation or gravitational force.
Explanation:
brainliest plz
an object at rest has no ________ energy, but it may have ________ energy resulting from its location or structure.
Answer: first blank: kinetic
Second blank: potential
Explanation:
Hope this helps and please consider choosing me for Brainiest!
According to the nebular theory, what early event eventually led to the formation of our solar system?
Answer:Solar system formed about 4.6 billion year ago, when gravity pulled together low-density cloud of interstellar gas and dust (called a nebula)(movie). The Orion Nebula, an interstellar cloud in which star systems and possibly planets are forming. Initially the cloud was about several light years across.
Explanation:
6tyhfdytythftyhyhfytfyht
Answer:
Six is the only number that is both the sum and the product of three consecutive positive numbers.
Explanation:
If a FRAMESHIFT mutation causes a stop codon to be inserted into the DNA sequence
Answer:
The frameshift mutation will also alter the first stop codon ("UAA", "UGA" or "UAG") encountered in the sequence. The polypeptide being created could be abnormally short or abnormally long, and will most likely not be functional.
Explanation:
Hope it helps
online masses every 8 a.m. and 2:00 p.m. will continue
online is hard toooooooooo
cho mạch như hình vẽ E
=
24
V
,
r
=
1
Ω
,
R
1
=
3
Ω
,
R
2
=
R
3
=
R
4
=
6
Ω
Answer:
A
Explanation:
sam can study for hours even though it is very loud and there are many possible distractions in the common room. this is an example of what?
Sam can study for hours even though it is very loud and there are many possible distractions in the common room, this is an example of a Focus system.
The focus system is a psychological intervention that is purposely designed for use at home or in lecture halls for cognitive or mental assimilation.
When the focus system takes place, an individual is able to further activate the brain networks to engage in more challenging cognitive activities despite the music, distractions, or noise from the background.
From the information given, the ability for Sam to study for hours even though it is very loud was his ability to activate his Focus System.
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How does the spring constant influence the displacement? Do they increase or decrease together?
Trial No. Applied Force (N) Displacement is attached (m)
1. 50 N 0.500m
2. 50 N 0.167m
3. 50 N 0.100m
4. 50 N 0.071m
Explanation:
I have asked question in my profile please tell me the answer
una fila di ballerini lunga complessivamente 2,3 m sta avvicinandosi perpendicolarmente a uno specchio. Se il primo ballerino, essendo miope, percepisce i contorni in modo nitido degli oggetti lontani al massimo 6 m, a quale distanza dallo specchio comincerà a vedere chiaramente l'ultimo ballerino della fila?
Answer:
A Benjamin Franklin
B George Washington
C Abraham Lincoln
D John Adams
light travels 3,00,000 km/s. Is it velocity or speed?
Hello there I hope you are having a great day :)
Your Question, light travels 3,00,000 km/s. Is it velocity or speed?
The answer would be speed,
Hopefully that helps you :)
the amount of energy available to do work is called:
Answer:
Gibbs, free energy
Explanation:
Describe how a roller coaster works in terms of using potential energy and kinetic energy:
Answer:
Traditionally, the coaster cars are pulled up the first hill by a chain; as the cars climb, they gain potential energy. Then, when the cars descend this hill, potential energy is again changed to kinetic energy. This conversion between potential and kinetic energy continues throughout the ride.
Explanation: hi how ya doing
por favor ayuda que ejercicio debo hacer para enflacar en una semana xd
Answer:
Un excelente ejercicio para perder barriga rápidamente es correr, ya que el cuerpo gasta una mayor cantidad de calorías en un corto período de tiempo, en tan sólo 30 minutos corriendo se queman unas 300 calorías.
...
Qué ejercicios realizar
Correr. ...
Clase aeróbica. ...
Saltar cuerda. ...
Bicicleta. ...
Caminar rápido. ...
Natación.
Explanation:
dame coronita por favor
Which of the following best defines the definition of a Newton (N)? *
0/1
The amount of force that would give a mass of one kilogram an acceleration of one meter per second per second
Kg * m/s².
Both answers above are correct.
A cookie with a fig fruit filling
One Newton can be defined as the amount of force that would give a mass of one kilogram an acceleration of one meter per second per second.
What is force?The definition of force in physics is: The push or pull on a massed object changes its velocity.
An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.
A spring balance can be used to calculate the Force. Newton is the SI unit of force.
From Newton's second law of motion: we know that:
Force = mass × acceleration
Now in SI system:
Unit of force is Newton.
Unit of mass is kg and unit of acceleration is meter per square second.
Hence, one Newton force can be defined as:
The required force to generate 1 meter per square second acceleration on an object of mass one kilogram.
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A object was fired at 17ms at 40 degree angle horizontal , if object traveled 29meters how long was it in the air
Friction force affects the work done by the applied force.
T OR F
Answer:
TRUE.
Explanation:
YES IT EFFECTS.
IT MAY HELP YOU.
Answer:
True
Explanation:
true because if you where to push a ball on a beach the friction with the sand would make it harder to push then being on concrete.
A ball is thrown upward with an initial velocity of 22.0 m/s. If
the gravitational acceleration is –9.81 meters per second
squared, what is the maximum height the ball will reach?
Select one:
2.24 m.
24.7 m.
4.48 m.
49.4 m.
The maximum height reached by the ball during the upward motion is 24.7 m.
The given parameters;
initial velocity of the ball, u = 22 m/sThe maximum height reached by the ball is determined using the third kinematic equation as shown below;
v² = u² - 2gh
where;
v is the final velocity of the ball at the maximum height = 0h is the maximum height attained by the ball0 = u² - 2gh
2gh = u²
[tex]h = \frac{u^2}{2g} \\\\h = \frac{22^2}{2(9.8)} \\\\h = 24.7 \ m[/tex]
Thus, the maximum height reached by the ball during the upward motion is 24.7 m.
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the relative highness or lowness of a sound is called
an engineer is developing a conveyor belt to help move heavy boxes in factories. The device should be able to move boxes from the first floor to the second floor of a factory. The engineer is building a full- sized model to test her design.
Answer:
This conveyor belt should be connected to fixed pulleys in case their total effort is less than the load. But if it's not that, the belt should be connected to movable pulleys.
Explanation:
[tex].[/tex]
Answer:
this conveyer belt should be connected to fixed pulleys in case their total effort is less than the load . but if it's not that the belt should be connected to movable pulleys