What forces are acting on a book lying on the table? Are action-reaction forces involved in this situation?

Answers

Answer 1
There is a weight force acting on the book downwards. There is a normal contact force also on the book upwards. These are equal and opposite. These two force are NOT an action-reaction couple (they are different types, they both act on the book)

Related Questions

What is the equivalent resistance of the circuit?

Answers

Answer:

5.5Ω

 

Explanation:

The circuit diagram shown is a parallel arrangement. To solve this problem for the equivalent resistance,

  R1  = 10Ω

  R2  = 20Ω

 R3 = 30Ω  

For circuits in parallel, equivalent resistance is ;

   [tex]\frac{1}{Rt}[/tex]   = [tex]\frac{1}{R1} + \frac{1}{R2} + \frac{1}{R3}[/tex]  

 Now insert the parameters and solve;

    [tex]\frac{1}{Rt}[/tex]  = [tex]\frac{1}{10} + \frac{1}{20} + \frac{1}{30}[/tex]  

    [tex]\frac{1}{Rt}[/tex]   = [tex]\frac{6 + 3 + 2}{60}[/tex]  

    [tex]\frac{1}{Rt}[/tex]   = [tex]\frac{11}{60}[/tex]  

    Rt  = 5.5Ω

 

The unit of the electric resistance is ???​

Answers

Answer:

Ohms

Step-by-step-explanation :

Electric resistance

Dimension length :

Squared mass per time cubed , that is , electric current squared.

The SI derived unit of electric resistance is the ohm,(volt per ampere).

Erica (39 kg ) and Danny (46 kg ) are bouncing on a trampoline. Just as Erica reaches the high point of her bounce, Danny is moving upward past her at 4.6 m/s . At that instant he grabs hold of her.

Answers

Answer:

V = 2.79 m/s

Explanation:

Momentum before = momentum after

Erica's momentum = 0

Danny momentum = 49 kg * 4.9 m/s = 240.1 kg-m/s

240.1 + 0 = (37 + 49) kg * V

86 V = 240.1

V = 2.79 m/s

why is it better to hold a musical events or programs in the evening?

Answers

Answer:

sound travels faster in the night

Explanation:

sound travels fasted at night

How does a battery supply electrical energy to a circuit?
A. Chemical reactions in a battery cause positively and negatively
charged particles to separate and become concentrated at the
battery terminals.
B. Chemical reactions in a battery cause positively and negatively
charged particles to concentrate in the center of the battery.
C. The force of attraction between positively and negatively charged
particles generates electrical energy within the battery.
O
D. Negatively charged particles that are concentrated at the negative
terminal are repelled from one another, forcing them into a
conducting wire.
ko

Answers

Answer: A.

Explanation:

took the test just now

A battery supplies electrical energy to a circuit Chemical reactions in a battery cause positively and negatively charged particles to separate and become concentrated at the battery terminals. The correct option is A.

What is a chemical reaction?

A chemical reaction is a process in which one or more substances, also known as reactants are converted to one or more different substances, known as products. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products

Chemical reactions in a battery cause positively and negatively charged particles to separate and become concentrated at the battery terminals resulting in the transformation into electrical energy therefore the correct option is A.

Learn more about chemical reactions

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Just two questions please answer.physics wave

Answers

Can’t see the pdf or video
300 x 0.05 is the wavelength of the 1st wave
300 x 0.04 is the wavelength of the second wave.

Frequency is speed/wavelength
So 300/wavelength for each wave.

I hope this helps. If not ask me for more help :)

Help!!
Remember W = mg, 1 kg = 2.2 lbs. S
1) If you have a 12 lbs. bag of potatoes what is its mass? What is its weight?

Answers

Answer:

5.5 KG is the mass

53.9 is the Weight

A train traveling at 48 m/s begins to slow down as it approaches a bend in the tracks. If it travels around the bend at a speed of 14 m/s, and it takes 40 seconds to properly slow down, what is the acceleration acting on the train during this time?


Please help 5 minutes left please!,

Answers

Answer:

Acceleration is (48-14)/40 m/s² = 34/40 m/s² = 0.85 m/s²

The acceleration acting on the train during this time of travel is 0.85m/s²

HOW TO CALCULATE ACCELERATION:

The acceleration of a moving body can be calculated by using the formula below:

a = (v - u)/t

Where;

a = acceleration (m/s²)v = final velocity (m/s)u = initial velocity (m/s)t = time (s)

According to this question, a = ?, v = 48m/s, u = 14m/s, t = 40s.

a = (48 - 14)/40

a = 34/40

a = 0.85m/s²

Therefore, the acceleration acting on the train during this time of travel is 0.85m/s².

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Dose the atoms in a solid move freely or remain in a fixed position ?

Answers

Fixed position becuase all the atoms are closely packed together

an archer shoots an arrow into a target using a bow. If the "action" force is the force of the bowstring against the arrow, what is the "reaction force?
a. the arrow's push against the bowstring
b. weight of the arrow
c. the archer's hand gripping the bowstring
d. the bowstring's force on the bow

Answers

Weight of an arrow is 20 plus 3

The Hindus in India were the first use
as a placeholder. .
O letters
zero
O calculus
scientific theories

Answers

Answer:Zero as a placeholder was invented independently in civilization

a measuring cylinder contains 30cm3 of a liquid some more of the liquid is added until the liquid level reaches the 50cm3 mark the reading on the balance increases by 30g what is the density of liquid?

Answers

Answer:

1.5g/cm³

Explanation:

Given parameters:

Initial volume of the liquid  = 30cm³

Final volume of the liquid  = 50cm³

Mass of the liquid  = 30g

Unknown:

Density of the liquid  = ?

Solution:

Density is the mass per unit volume of a substance.

  Density  = [tex]\frac{mass}{volume}[/tex]  

volume of the liquid  = final volume - initial volume  =  50cm³  -  30cm³

 volume of the liquid  = 20cm³

Density  = [tex]\frac{30}{20}[/tex]   = 1.5g/cm³

On the graph below, the line crosses the x axis on a velocity versus time
graph. What does this tell you about the motion of the object?

A. Slowing down
B. Speeding up
C. Changing direction
D. Changing speeds

Answers

Answer:

A. Slowing down

Explanation:

The graph is decreasing which means that the speed of the object is no longer at its peak.

A baby carriage is rolling down a hill at 18 m/s. If the carriage has 90J of kinetic energy, what is the mass of the carriage? a. 5 kg b. 0.56 kg c. 10 kg d. 100 kg​

Answers

Answer:

why did the parents let go of their child-

Explanation:

A 5 kg, because 90 / 18 is 5

The mass of the carriage is 10 kg

The formular for kinetic energy

K.E= 1/2mv²

Kinetic energy= 90 joules

velocity= 18 m/s

mass= ?

90= 1/2 × mass × 18

90= 0.5 × 18 × mass

90= 9 × mass

mass= 90/9

= 10 kg

Hence the mass of the carriage is 10 kg

For more information, please see the link below

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If you're not satisfied with your fitness evaluation score, there's really little you can do about it.

Answers

Answer:

False

Explanation:

Answer:

false

Explanation:

you can improve your score next time

What can cause the formation of a magnetic domain?
A. The magnetic fields of nearby atoms being aligned with each
other
B. Magnetic field lines passing through the center of a magnet
C. A metal being attracted to the pole of a magnet
O D. A magnet being cut in half many times to form many smaller
magnets

Answers

Answer:

The magnetic fields of nearby atoms being aligned with each other

Explanation:

took the quiz c:

For a magnetic domain to be formed in a molecule, it follows that the  magnetic fields of nearby atoms are being aligned with each other.

What is a magnetic domain?

The term magnetic domain refers to the arragement in the magnetic material which allows the material to be magnetic in nature.

For a magnetic domain to be formed in a molecule, it follows that the  magnetic fields of nearby atoms are being aligned with each other.

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Please help me on due today
A personal enrichment goal is related to your life outside the classroom. You might set a goal to read every day or take on a new challenge in an extracurricular team, sport, or activity.
Your completed portfolio will demonstrate how you worked to achieve your stated goals.
• Step 1: Decide what you want to achieve.
• Step 2: Set your goal.
• Step 3: Decide what actions you need to take to reach your goal.
• Step 4: Set a time frame.
• Step 5: Think about your assets and obstacles.
Subject-Matter Achievement Goal
1. My subject-matter achievement goal is:
Answer:
2. My action steps are:
Answer:
3. My time frame is:
Answer:
4. Assets and Strengths:
Answer:
5. Motivation:
Answer:
6. Obstacles:
Answer:
7. Solutions:
Answer:
Study/Organizational Skills Goal
8. My study/organizational skills goal is:
Answer:
9. My action steps are:
Answer:
10. My time frame is:
Answer:
11. Assets and Strengths:
Answer:
12. Motivation:
Answer:
13. Obstacles:
Answer:
14. Solutions:
Answer:
Personal Enrichment Goal
15. My personal enrichment goal is:
Answer:
16. My action steps are:
Answer:
17. My time frame is:
Answer:
18. Assets and Strengths:
Answer:
19. Motivation:
Answer:
20. Obstacles:
Answer:
21. Solutions:
Answer:

Answers

Subject-Matter Achievement Goal

1. My subject-matter achievement goal is:

Answer:  Read 1 full chapter book in 1 week

2. My action steps are:

Answer:  Read an equal amount of chapters every day for a week

3. My time frame is:

Answer:  1 week

4. Assets and Strengths:

Answer:  ability to focus,

5. Motivation:

Answer:  Great interest in the book I chose

6. Obstacles:

Answer:  Might lose page number, forget where I am at in the book, forget to read one day

7. Solutions:

Answer:  Get or make a bookmark, keep a personal reading log, set alarm for a certain time each day

Study/Organizational Skills Goal

8. My study/organizational skills goal is:

Answer: manage my time better

9. My action steps are:

Answer: planning things out to be more organized

10. My time frame is:

Answer: from now to the end of the school year

11. Assets and Strengths:

Answer: a planner so I can pace myself

12. Motivation:

Answer: give breaks and take time to do things I enjoy

13. Obstacles:

Answer: leaving things last minute

14. Solutions:

Answer:  planning to do certain things before a certain day

This can be for any of those goals

Personal Enrichment Goal

15. My personal enrichment goal is:

Answer: Stay healthy

16. My action steps are:

Answer: eat healthier foods

17. My time frame is:

Answer: now to the end of the school year

18. Assets and Strengths:

Answer: I don't make a big deal out of eating veggies and stuff

19. Motivation:

Answer: treat myself every so often

20. Obstacles:

Answer: Craving junk food

21. Solutions:

Answer: find a way to make healthier foods taste similar to junk food (EX. Put cheese on broccoli)

16. Through which of the following mediums is the velocity of a sound wave the greatest?
A. Steel
B. Lend
Water
D. Air

Answers

A.) Steel.

steel travels 5,060 meters per second,

lead travels 1,402 meters per second,

water travels 1,439 meters per second,

and air depends on temperature.

Help!!!
Remember W = mg, 1 kg = 2.2
2) A car engine has a weight of 1500 N, what is it's mass and what is it's weight in lbs.?

Answers

Answer:

Mass is 152.95743

weight in ibs 3304.6914215069355 ibs

EXPLANATION:

1500 N = 152.95743 KG

152.95743 KG × 9.8 = 1498.982814

1 KG is 2.2 IBS

so

14o8.982814 is 3304.6914215069355

What is intensity?
A.
The fastest your heart can beat
B.
How hard your body is working
C.
A place on your body where you can feel your heart beating
D.
None of the above

Answers

Answer:

D

Explanation:

None of the above because the intensity is amount of a property, force, brightness, and magnetic field.

Answer:

D. None of the above

Explanation:

D. None of the above, because the quality or condition of being intense. great energy, strength, concentration, vehemence, etc., as of activity, thought, or feeling: He went at the job with great intensity. a high or extreme degree, as of cold or heat. the degree or extent to which something is intense.

<>Hope this helps! : )

pls help me tbis is being timed

Answers

Answer:

it would have to be 1000 netons

(03.07 MC)
A 660 kg car is travelling around a circular track of radius 55.0 m at 11.5 m/s.
Calculate the force and its direction that provides the centripetal force acting on the car to keep it
in the circular path. (3 points)
a) 24 N toward the center of the circle
b) 24 N along the line tangent to the circle
c) 1.587 E3 N along the line tangent to the circle
d) 1.587 E3 N toward the center of the circle

Answers

Answer: D) 1.587 E3 N toward the center of the circle

This is the same as saying 1.587*10^3 newtons, or we can say 1587 newtons

=================================================

Work Shown:

m = mass = 660 kilograms

v = velocity = 11.5 meters per second

r = radius of circle = 55.0 meters

-------------

F = centripetal force = inward pulling force toward center of circle

F = (m*v^2)/r

F = (660*11.5^2)/55

F = 1587

F = 1.587 * 10^3

F = 1.587 E 3

The "E 3" notation is what many calculators display scientific notation to be

The units for the force here are in newtons.

The force is pulling on the object toward the center of the circle, which helps keep the car on the circular path, rather than it going off on a tangent.

A race car with a 255 hp (1.90 × 105 W) engine is able to accelerate from rest to its top speed in 9.00 s. How much work does the car's engine do in this interval of time?

Answers

Answer:

W = 1710 kJ

Explanation:

Given that,

Power of a race car, P = 255 hP = [tex]1.9\times 10^5\ W[/tex]

It accelerate from rest to its top speed in 9.00 s.

We need to find the work does the car's engine do in this interval of time.

Power is given by work done per unit time. Mathematically,

[tex]P=\dfrac{W}{t}\\\\W=P\times t\\\\W=1.9\times 10^5\times 9\\\\W=1710\ kJ[/tex]

So, the required work done is is 1710 kJ.

How long is the racetrack if it takes a racecar 3.4 a traveling at 75 m/s to finish? ​

Answers

Answer:

255 metres

Explanation:

The answer to the question is actually quite simple. Since the car goes for 3.4 seconds, and it goes 75 metres every second, the answer is just 3.4 multiplied by 75 Metres.

Momentum is a product of mass and _____.

Answers

Answer:

Momentum, product of the mass of a particle and its velocity. ... Momentum is a vector quantity; i.e., it has both magnitude and direction. Isaac Newton's second law of motion states that the time rate of change of momentum is equal to the force acting on the particle.

Mass and it’s velocity

15 points. give me the method.
4.The difference of wavelength of two waves of frequencies 640Hz and 480Hz respectively in a certain medium is 1m. Find the velocity of sound in that medium.

Answers

Answer:

[tex] \boxed{{160 \: m(s)}^{ - 1} }[/tex]

Explanation:

[tex]if \:the \: frequencies \: are \to \\ f_{1} = 640Hz \\ and \\f_{2} = 480Hz \: \\ but \: \boxed{v = f \gamma }: f = \frac{v}{ \gamma } \\ if \: \gamma_{1} - \gamma _{2} = 1 = \gamma \\ f_{1} - f_{2} = 640 - 480 = \boxed{ 160Hz} = f \\ v = f \gamma = 160 \times 1 = \boxed{{160 \: m(s)}^{ - 1} }[/tex]

1. What is the gravitational force of attraction between two 800 kg spherical objects that are 5 m apart? What would the gravitational force of attraction between these two objects be if the distance between them was changed to 10 m?

Answers

Answer:

the force of gravity between them is quadrupled .

Explanation:

Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces.

Which are the basic physical sciences?

Answers

Answer:The four main branches of physical science are astronomy, physics, chemistry, and the Earth sciences, which include meteorology and geology.

Answer:

Chemistry, physics, astronomy and earth science.

Explanation:

The four main categories of physical sciences are chemistry, physics and earth science and astronomy. Life sciences deal with living organisms and behavioral sciences deals with the interactions between organisms in the natural world.

why are unit of length mass and time independent with each other?​

Answers

Масса (килограмм), длина (метр) и время (секунда) - это 3 из 7 основных единиц в системе СИ.

Базовые единицы произвольно определены как то, что они есть, поэтому они не могут быть получены.

Все другие единицы в системе СИ являются производными от 7 основных единиц, таких как скорость (метр / секунда).

Остальные 4 - это температура (Кельвин), количество вещества (моль), электрический ток (ампер) и светимость (кандела).

Which statement best describes the difference between acceleration and velocity?



A. acceleration only shows a change in direction, but velocity shows a change in speed.
B .acceleration depends on direction, but velocity does not.

C. acceleration is a change in velocity, but velocity is speed in a given direction.

D. acceleration only shows change in speed, but velocity only shows a change in direction.

Answers

Answer:

C

Explanation:

acceleration is a change in velocity which means a time rate change in velocity but velocity is the time rate change in displacement

Other Questions
This table shows four species of plants, with descriptions. Which species are most likely vascular? the bracken and the bog groove moss the thallose liverwort and the bog groove moss the bracken and the lemon tree the thalose liverwort and the lemon tree Mark this and return Find three consecutive even integers suchethat one half of their sum is between 15and 21. What is the importance of the saying, Lottery in June, corn be heavy soon? btw its from The Lottery what is 3t 6 = t 2. SAMB DOGRUS4(2x-1)+3(2x+5)4(2x - 1) + 3(2x+5) Quinns relatives relayed a story about putting on a headset and seeing a digital world that they could walk around in and explore in order to see what ancient Benin looked like, as if they were really there. What is this called?systems softwarehardwarevirtual realityaugmented reality The actual distance between Oaxaca and Guadalajara, Mexico, is 984 kilometers. On a certain map, these two cities are 4 centimeters apartOn the same map, Guanajuato and Tijuana, Mexico, are 10 centimeters apart. What is the actual distance between Guanajuato and Tijuana ? 2. Which of the following is a CORRECT pairing of the RNA type and thedescription?tRNA / contains codons which determine the correct amino acid sequence for aproteinmRNA / formed from the DNA gene sequence with the help of RNA polymeraseO rRNA / formed in the nucleus and carries amino acids to the ribosomemRNA / contains anti-codons which are complements to tRNA codons Identify and >DESCRIBE< the four major ethnic groups of the Middle East. Which scenario describes an effect of tornadoes on the environment? a section of forest that has been burned a path through a town with uprooted trees a town near the coast with heavy flooding a sandy beach that shows signs of erosion Graph the equation of y = | x | four units up Can someone give me ideas for an art piece with contrast as a theme Solve for x.8(x + 1) - 3(x + 4) = 7(2 - x)x = 1 1/2x = -1 1/2x = 1 1/4x = -1 1/4 Find two possible next terms of a sequence 2, 8, ____, ____ that is neither geometric nor arithmetic. compare and contrast living conditions today to what they were like back during the Depression. How are they alike? How are they different? Matthew went to a amusement park during his summer vacation. He wentwith four of his best friends. The admission fee for the park was $10.50. The cost of each rideticket is $5.50. His favorite ride was the tilt-O-whirl. Matthew had $36.75 to spend at theamusement park. How many ride tickets can Matthew buy? Graph the image of the figure after a rotation of 90 counterclockwise. give me examples of everyday problems you think involve the green substances copper acetate or copper sulfate. I dont have one and Im a sixth grader to increase an amount by 19% multiple by?