1. The force on the last car of a train with a mass of 4.5 kg is 8.0 N. What is the train's acceleration in m/s2?
2. Observe the table. How many times greater must the acceleration of Object B be than the acceleration of Object A to make the table true?
Enter your answer as a whole number, like this: 4
Answers
answer = 1.78
Related Questions
which of these factors is pushing elephant species toward extinction?
Answers
BTW the hunting of an elephants tusk and skin can put it towards extinction
Answer:
The answer is “global demand for ivory”
Explanation:
Divers get "the bends" if they come up too fast because gas in their blood expands, forming
bubbles in their blood. If a diver has 0.05 L of gas in his blood under a pressure of 25,000
kPa, then rises to a depth where his blood has a pressure of 5000 kPa, what will be the
volume in liters of gas in his blood?
Answers
Answer:
V= 0.25L
Explanation:
An entertainer pulls a table cloth off a table leaving behind the plates and sliverware undisturbed is an example of
A.
the law of balanced forces
B.
Newton's second law
C.
Newton's third law
D.
Newton's first law
Answers
Answer:
D. Newton's first law
Explanation:
Newton's first law of inertia says that an object will remain how it is, unless affected by an outside force. In this case, the plates want to remain stationary(not moving). Therefore, if you pull the table cloth fast enough, the force of friction produced will be small enough so that the Inertia of the plates will overcome the force of friction.
Charge is given in microcoulombs. What must you multiply the charge by to use Coulomb's
law to calculate the electric force?
O
A. 10-6
O
B. 10-3
C. 106
D. 103
NEED ANSWER NOW
NO LINK
Answers
Answer:
Option A. 10¯⁶
Explanation:
To know which option is correct, we must bear in mind, the relationship between micro coulomb (μC) and coulomb (C). This is given below:
Recall:
1 μC = 10¯⁶ C
Therefore, to convert micro coulomb (μC) to coulomb (C), multiply the value given in micro coulomb (μC) by 10¯⁶.
Thus, option A gives the correct answer to the question.
A metal rod is 25.000 cm long at 25.0 degrees Celsius. When heated to 102.0 degrees Celsius, it is 25.054 cm long. What is the coefficient of linear expansion for this metal.
Answers
1. A car moving to the right at 30 m/s, slows down 5 m/s every second until it comes to a stop.
a). At what time will the car come to a stop?
b). How far did the car travel by the time it came to a stop?
Answers
What is a metallic bond?
Explain in like a simple way please
Answers
A metallic bond is the sharing of many detached electrons between many positive ions, where the electrons act as a "glue" giving the substance a definite structure. It is unlike covalent or ionic bonding. ... The electrons and the positive ions in the metal have a strong attractive force between them.
Students push a swing with a hard push and a soft push. Each time the students count how many time the swing moves back and forth before stopping. What variable is tested in this investigation?
a. differences in pushes and pulls
b. force of the push
c. number of time the swing moves
d. distance the swing moves
Answers
evidence: “the students count how many times the swing move back and forth before stopping”
¿Cuáles de las siguientes cualidades permiten identificar un cuerpo como planeta? I) Debe ser aproximadamente esférico. II) Debe girar en torno a una estrella. III) Su velocidad debe ser constante.
Answers
Answer:
The correct answer is ii) It must revolve around a star
Explanation:
For a celestial body to be called a planet, it must meet at least three characteristics
* rotate around a star
* its mass must be sufficient to maintain hydrostatic equilibrium
* have control over its orbital that is to say to prevent that other body is in its same orbital
if we check the different proportions
i) False. Most of the planets are spheres deformed by their rotation on themselves and around the star
ii) True. It is in accordance with the minimum characteristics of the plants
iii) False .. the orbit of the planet can be elliptical and the speed changes at each point for this at a different distance from the star that is in a focus of the ellipse.
The correct answer is ii) It must revolve around a star
PLEASE HELP ME!!! THIS IS DO TODAY. AND NO LINKS PLEASE!!!!!
Answers
Answer:
to late
Explanation:
true or false
two different notes can have the same fundamental frequency
Answers
Answer:
true:)
Explanation:
Joan needs to eliminate some employees for a short while. She and her managers identify those employees who are not meeting performance expectations and explain that this termination is temporary but they are encouraged to seek other positions elsewhere. How is Jane trying to reduce the size of the workforce here?
Answers
Answer: layoff
Explanation:
From the information in the question, we can see that Jane is trying to reduce the size of the workforce here through layoff.
Since Joan explains that the termination is temporary, then it's a layoff. If it were to be firing, the termination won't be temporary but permanent as they can't be recalled by the company. But since the employees are discharged temporarily, it's a layoff.
What is number 5?! I’m so confused.
Answers
Answer:
i think it's A
Explanation:
Answer:
The answer is A
Explanation:
Please Help I'll Make You Brainliest
The gravitational pull will be lowest between which two spheres?
Answers
A- (10kg sphere and 30m)
{I hope this helps :) }
Do you think the plan for the skyscraper in California is appropriate based on its location? Why or why not? Your answer should include at least three complete sentences. (plz write out answer) (this is about earth quakes)
Answers
Answer:
No
Explanation:
No because like my other answer if we put to many diesels on it it will crack and little by little it will break eventually everyone will come tumbling into the water making them drown because they can't get the buckles loose or they wanted to save their families lives
A skier traveling downhill has this type of energy
Answers
Answer:
potential energy
Explanation:
A cyclist travels 21 km in 90 minutes. Calculate, in m s–1 , the speed of the cyclist.
Answers
Answer:
35/9 m/s
Explanation:
21 km = 21000 m
90 min = 90*60 s = 5400 s
21000/5400 = 35/9 m/s
What is the instantaneous velocity of the hummingbird at t=1s?
Answers
The distance - time graph of the humming bird is missing, so i have attached it.
Answer:
Instantaneous velocity = 0.5 m/s
Explanation:
From the attached graph, at time t = 1 s, the corresponding distance is 0.5 m.
Instantaneous velocity is the velocity at that point.
Thus;
Instantaneous velocity = 0.5/1
Instantaneous velocity = 0.5 m/s
What is the relationship between large amplitude waves and small amplitude waves?
A Both waves have variable energy.
B Large amplitude waves have more energy than small amplitude waves.
C Large amplitude waves have less matter than small amplitude waves.
D Both waves have constant matter.
Answers
Answer:
c.large amplitude waves have less matter than small amplitude waves
why x ray is called an electromagnetic wave
Answers
Hope you get it :)
water is know to boil at 100°C.A student boiled water and realised it's boiling point was 101°C.State two possible reasons
Answers
-- impurities in the water
-- air pressure is higher than standard
1. Biodiversity refers to the variety of life in an ecosystem.
False
True
Answers
———————————- bbbnnn
Where do humans and other animals get their food? From only other animals From plants and other animals From only plants From the sun.
HELP PLZZZ
Answers
Answer:
Humans (which are omnivores) get their food from plants and other animals.
Some animals (omnivores) get their food from plants and other animals.
Some animals (carnivores) get their food from only other animals.
Some animals (herbivores) get their food from only plants.
Answer:
c
Explanation:
As you go farther down the periodic table, the atoms get _______ and more ________.
Answers
Answer:
As we navigate down a group the atoms get bigger and bigger with more and more electrons. This means the outermost electrons get further and further away from the positively charged nucleus.
Answer:
As we navigate down a group the atoms get bigger and bigger with more and more electrons. This means the outermost electrons get further and further away from the positively charged nucleus
Hope this helps!!!!
When the image of an object is seen in a plane mirror, the distance from the mirror to the image depends on?
A. The Wavelength of light used for viewing
B. The distance from the object to the mirror
C. The distance of both the observer and the object to the mirror.
Answers
When the image of an object is seen in a plane mirror, the distance from the mirror to the image depends on the distance from the object to the mirror.
It is because a Plane Mirror is the incident ray, the reflected ray, and the normal to the surface all lie in the same plane, and the angle of incidence is equal to the angle of reflection. So, the distance from the object to the mirror equals the distance from the image to the mirror. Thus whoever the person viewing this image must sight at this image location.
Station 1: Sierra is running in a school track
meet. She will need extra energy to complete
the race and her body systems need to work
together to help her get it. Cellular respiration
is the way our bodies get energy out of the food
we eat. Her body needs to make sure her cells
get enough oxygen for cellular respiration to
occur but removes the carbon dioxide that is
built up in this same process. Which body systems will work together to
maintain the energy Sierra needs?
Answers
Answer:
The body systems that work together to maintain the energy Sierra needs are;
The digestive system, the respiratory system, and the circulatory system
Explanation:
Cellular respiration in the body cells require oxygen to produce energy which are used by the muscles and other body cells. Carbon dioxide is also produced and is the build up of carbon dioxide has to be removed from the body as the by product of cellular respiration which is toxic at the cell level
Therefore, the body systems that work together to maintain the energy Sierra needs are;
The digestive system; Takes in the energy containing food and brakes them into chemicals that are transported to the cells for cellular respiration
The respiratory system; Takes in oxygen and removes carbon dioxide from the blood from and to the atmosphere
The circulatory system; Supplies food and oxygen from the digestive and respiratory system to the cells and transports produced carbon dioxide from the cells to the lungs from where it is passed out of the body by th respiratory system.
Calculate the speed of a periodic wave that has a wavelength of 2.0 m and a frequency of 3.0 Hz.
Answers
Answer:
v=wavelength x f = 2 x 3 = 6 m/s
Explanation:
The speed of a wave is the product of its frequency and wavelength. The speed of the periodic wave with the frequency of 3 Hz and wavelength of 2 m is 6 m/s.
What is frequency?Frequency of a wave is the number of wave cycles per unit time. It is the inverse of the time period of the wave. Frequency is inversely proportional to the wavelength of the wave.
The relation between speed, frequency and wavelength of a wave is given by the expression as written below:
c =νλ
where, c is the speed, ν be the frequency and λ be the wavelength.
Given that ν = 3 Hz or 3 s⁻¹
and λ = 2 m
then speed c = 2 m × 3 Hz = 6 m/s
Therefore, the speed of the periodic wave is 6 m/s.
Find more on periodic waves :
https://brainly.com/question/12396838
#SPJ6
Bilateria are characterized by Multiple Choice a plane of symmetry around a transverse plane across the center of the body so that the front and back halves are mirror images. a plane of symmetry that forms mirror images around any plane through the longitudinal midline of the body. a plane of symmetry that forms mirror images around a horizontal plane in the midline. a plane of symmetry that forms mirror images around a vertical plane in the midline. a plane of symmetry that forms mirror images around an oblique plane in the midline.
Answers
Answer:
A plane of symmetry that forms mirror images around a vertical plane in the midline.
Explanation:
Bilateria are animals that have a bilateral symmetry,
Bilateral symmetry refers to organisms that are mirror images along their midline called a sagittal plane.
Examples of bilateria include butterflies and humans because, a line through their midline divides the organism into two identical halves which are mirror images of each other.
So, Bilateria are characterized by a plane of symmetry that forms mirror images around a vertical plane in the midline.
describe atmospheric pressure and water pressure
Answers
Answer:
The difference is that water is an incompressible fluid — its density is almost constant as the pressure changes — while air is a compressible fluid — its density changes with pressure. ... Atmospheric pressure is the pressure exerted on a surface by the weight of the atmosphere (a compressible fluid) above it
Explanation:
change some words
Which of the following is a theory stating that one plate is forced beneath another plate?
(Choose one) :
1.) theory of Permian Extinction
2.) theory of plate tectonics
3.) theory of subduction
4.) theory of Pangaea
Answers
Answer:
theroy of plate tectonics