Answer:
the air within our bodies (in our lungs and stomachs, for example) is exerting the same pressure outwards so there's no pressure difference and no need for us to exert any effort.
Explanation:
Because in our body blood also exerts pressure that's why we don't feel atmospheric pressure.
What would happen to a satellite if its orbit speed doubled?
Answer:
The radius of orbit will decrease by 1/4, the satellite will come closer to Earth
Explanation:
The orbital speed of any body revolving in an orbit around another boyd is given by:
v (orbital) = √(G · M(central body)/R)
Where G is the gravitation constant.
If the body, e.g satellite is moving around the Earth, then the mass of central body M will also be a constant. Therefore, the only thing on which the orbital velocity will depend on will be Radius of the orbit R.
v ∝ 1/√R
√R ∝ 1/v
Take square:
R ∝ 1/v²
If the velocity of satellite will doubles, then:
R' ∝ 1/ (2v)²
R' ∝ 1/4v²
R' ∝ (1/4)(1/v²)
R' ∝ (1/4)(R)
The radius of orbit will decrease by 1/4, the satellite will come closer to Earth
You push a cart with mass 15 kg forward , giving it an acceleration of 3 m/s ^ 2 . How much force did you apply ? O A. 0.2N O B. O 18N O D. 45 N
Answer: force = mass x accelegation
Explanation: 15x3 = 45 N
Answer:
A
Explanation:
Place each description in the correct category.
represented by symbols
Elements
Compounds
made of one type of atom
represented by formulas
cannot be broken down
can be chemically broken down
made of two or more types of atoms
Answer:
answer in photo:
Explanation:
Elements:
They are represented by symbols.They are made of one type of atom.They cannot be broken down.Compounds:
They are represented by formulas.They can be chemically broken down. They are made of two or more types of atoms.A chemical element can be defined as a pure substance that is represented by a symbol and it comprises one type of atom that has the same atomic number (number of protons) in its nuclei.
Basically, a chemical element is a pure substance that can't be broken down, decomposed or transformed into simpler substances by chemical or physical means.
In Chemistry, some examples of a chemical element include the following:
Carbon (C). Oxygen (O). Hydrogen (H).A chemical compound can be defined as a substance that is represented by a formula and it contains two or more types of atoms, which can be chemically broken down.
Some examples of a chemical compound are:
Carbon dioxide ([tex]C0_2[/tex]).Hydrogen sulfide ([tex]H_2S[/tex]).Sodium chloride (NaCl).Find more information: https://brainly.com/question/18214726
Calculate the orbital radii for the first six principal quantum numbers
Answer:
Explanation:
Formula for calculating radius is
r=.529A x n^2 where A=10^-10m
So put n=1,2,3,4............
A girl runs up the down escalator in the mall. If the escalator is moving with a
velocity of 24 m/min and the girl is running with a velocity of 30 m/min, how far up the escalator can she go in 4 minutes?
A. 10 m
B. 30 m
C. 48 m
D. 24 m
Answer:
D. 24 m
Explanation:
Running up - velocity + 30 m/min
Escalator 's moving down velocity - 24 m/min
Sum velocity (30 - 24) = 6 m/min
6 m/min * 4 min = 24 m
What is the energy conversion in a hair dryer?
A. Heat energy to electric and mechanical energy
B. Potential energy to electric and kinetic energy
C. Electric energy to heat and kinetic energy
D. Light energy to mechanical and electric energy
Answer:
C.Electrical energy to heat and kinetic energy
What is the negative outcome of consolidation from many slaughterhouses across the US to only 13? A less greenhouse gas emissions B greater profits for agricultural corporations C less cost for farmers D greater possibility of contamination of our food
Answer:
D greater possibility of contamination of our food
Explanation:
Slaughterhouses are the places where animals are slaughter to supply food and when these places are consolidated, the few ones that remain receive a higher amount of animals and the meat from those animals can be combined in a batch which increases the chance of it to get contaminated. According to that, the answer is that the negative outcome of consolidation from many slaughterhouses across the US to only 13 is greater possibility of contamination of our food.
The other options are not right because they would be considered positive outcomes.
How many ohms of resistance must be present in a circuit that has 240 volts and a current of 15 amps?
ОА.
3,600 ohms
О В.
16 ohms
230 ohms
D. 0.063 ohms
Answer:
16 ohms
Explanation:
V= I ⋅ R
where, V is the net potential difference in the circuit, I is the current in the circuit and R is the net resistance of the circuit.
In this case, V = 240 volts, I = 15 amperes.
240 = 15 ⋅ R
⇒ R = 240/ 15 = 16 ohms
Answer:
b-16ohms
Explanation:
If you are using online learning/PLATO the answer is proven to be B-16 ohms
a toy airplane is flying at a speed of 8 m/s with an acceleration of 0.9 m/s^2. How fast is it flying after 2 seconds? A)9.8 m/s B)8.1 m/s C)5.2 m/s D)3.6 m/s
Answer:
A) 9.8m/s this answer is correct.
The acceleration is increasing by 0.9m/s^2 .
so, in each second it will increase by 0.9m/s^2.
Therefore, in 2 second
0.9 * 2
= 1.8m/s
Now,
8 + 1.8
= 9.8m/s
An airplane with a total mass of 850 kg has an engine malfunction, causing it
to provide a constant horizontal force of 4000 N. The pilot, who has a mass
of 80 kg, decides to eject from the airplane. With the reduced total mass,
what is the new approximate acceleration of the airplane?
A. 3.1 m/s2
B. 5.2 m/s2
C. 2.8 m/s2
D. 3.7 m/s2
Answer:
B
Explanation:
If the pilot, who has a mass of 80 kg, decides to eject from the airplane. With the reduced total mass,then the new approximate acceleration of the airplane will be 5.2 m/s²
What is Newton's second law?
Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
The mathematical expression for Newton's second law is as follows
F = m*a
where F represents the force applied
m is the mass of the object
a is the acceleration of the object
The initial acceleration of an airplane with a total mass of 850 kg has an engine malfunction, causing it to provide a constant horizontal force of 4000 N.
F =m*a
4000 N = 850×a
a= 4.7 m/s²
An acceleration of airplane when the pilot, who has a mass of 80 kg, decides to eject from the airplane. With the reduced total mass,
the horizontal force is the same 4000 N, now the total reduced mass the airplane is 770 kg
F =m*a
4000 =770×a
a = 5.2 m/s²
Learn more about Newton's second law, here
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The graph below shows the conservation of energy for a skydiver jumping out
of a plane and landing safely on the ground. Which energy is represented by
line B?
A. Elastic energy
B. Kinetic energy
C. Light energy
D. Potential energy
Answer:
The correct option is:
B) Kinetic Energy
Explanation:
We know that if a body is placed at a certain height, it possesses Potential Energy, which is represented by 'mgh'. In this case, when the skydiver is present in the plane, before jumping, he has potential energy as he is at height 'h'.
As Kinetic energy is given as '(1/2)mv²' dependent on velocity of the object, when the skydiver jumps of the plane, his height starts decreasing, which decreases his Potential Energy. As energy can neither be created or destroyed, but is converted to one form or another, all this Potential energy starts to convert into Kinetic energy. As Potential Energy decreases with distance, Kinetic energy increases. Hence, line B represents Kinetic Energy.
Guy received his home loan for $200,000. Determine which of the following was the mortgage company’s most important reason for giving him his loan. budget plan of how the payments will be made the total value of current assets and all income the referral from other clients of the company the neighborhood in which the home is located NEXT QUESTION
Answer: The answer is "the total value of current assets and all income"
Explanation:
Why does the pattern of colors repeat in a thin soap film? Please use 2 content related sentences. (ref: p.522-530)
Answer: The pattern of colors that repeat in a thin soap film is a result of the interference of light waves reflecting off the front and back surfaces of the film. The specific colors seen are determined by the thickness of the film, with different wavelengths of light being reflected or refracted at different angles, creating the characteristic rainbow pattern.
Generally, branch- circuit conductors shall have an ampacity sufficient for the loads served and shall be or large? A. 22AWG B. 4 AWG C. 24 AWG D. 14 AWG
Answer:
D. 14 AWG
Explanation:
Ampacity is defined as the maximum current carry by a conductor without increasing the temperature rating.
All branch circuit conductors shall have an ampacity of at least 14 AWG.
That is why 14 AWG electric wire is a stranded copper wire widely used in circuits.
Hence, the correct option is D. 14 AWG.
hydrogen bonding is a strong attractive force. T OR F
Answer:
F
Hope it helps you!
A camera lens focuses on an object 75.0 cm from the lensThe image forms 3.50 cm behind the lens. What is the magnification of the image?
Answer:
7/150
Explanation:
The following data were obtained from the question:
Object distance (u) = 75cm
Image distance (v) = 3.5cm
Magnification (M) =..?
Magnification is simply defined as:
Magnification (M) = Image distance (v)/ object distance (u)
M = v /u
With the above formula, we can obtain the magnification of the image as follow:
M = v/u
M = 3.5/75
M = 7/150
Therefore, the magnification of the image is 7/150.
Answer:
-0.0466
Explanation:
an inclined plane makes work easier by increasing the distance and decreasing the____.
Answer:
force
Explanation:
Answer:
force
Explanation:
A person on a merry-go-round is constantly accelerating away from the center?
true or false
That statement is false. It's exactly the opposite direction.
In circular motion, the "centripetal" force ... and therefore the centripetal acceleration ... points TOWARD the center.
Answer:
False
Explanation:
Took The Quiz
what are three reasons we should be concerned about the current rapid extinction rate
Answer:
1. Possibility of all life being wiped out
2. Ecosystem being imbalanced.
3. Loss of one species triggers the lost of others as the food chain will collapse.
Answer:
a
Explanation:
Mary is allergic to cats. Mary's friend, Sue, has a roommate who has cats. Whenever Mary visits Sue, Mary sneezes even before she enters Sue's house. Mary's sneezing persists even after Sue's roommate and his cats have moved out. After a while, Mary stops sneezing before she enters Sue's house. The point at which Mary's sneezing stopped is an example of _____.
Answer: Extinction
Explanation: Extinction simply means cessation. A condition whereby an action or behavior exhibited by an individual or organism eventually stops. In psychological parlance, extinction is usually attributed to the discontinuance of a certain behavior usually due to non - reinforcement or eventual absence of the conditioned stimulus.
In the scenario above, the point at which Mary stopped sneezing is called extinction which is due to the removal of the cat which is the cause of Mary's sneezing behavior.
in a car how does an airbag minimize the force acting on a person during a collision
Answer:
It increases the time it takes for the person to stop.
Explanation:
Answer:
It increases the time it takes for the person to stop.
Explanation:
A scientist adds different amounts of salt to 5 bottles of water. He then measures how long it takes for the water to boil. what is the dependent variable in this experiment?
Referring to the above diagram, how high will the ball rise on the right-hand incline?
0 cm
7 cm
15 cm
no way to tell
A 51-kg woman runs up a vertical flight of stairs in 5.0 s. Her net upward displacement is 5.0 m. Approximately, what average power did the woman exert while she was running?
Answer:
510
Explanation:
Power= Rate of doing work i.e work done\time
=force*displacement\time
=mass*g*d\t
=51*10*5/5
=510watt
beats are the resultant of
In which of the following situations or places would you want to reduce the
force of friction?
I A. Skiing down a hill during a race.
B. Walking down a steep hill.
C. Sitting in the bed of a pickup truck while it turns a corner
D. In the axle of the wheels while you ride your bicycle.
Answer:
D
Explanation:
The correct answer would be in the axle of the wheels while you ride your bicycle.
Options A, B, and C requires that the forces of friction is increased in order to have more control.
However, option D requires that there is a minimal frictional force in the axle of the wheels of a bicycle while riding so that a little effort would be required to keep the bicycle moving.
The lesser the friction, the lower the effort that would be needed to keep the bicycle moving and vice versa.
What are data?
A. Pieces of information recorded in an experiment
B. Sources that summarize a primary source
C. Educated guesses about the outcome of an experiment
D. Variables that are adjusted by the experimenter
SUBNIIT
Answer:
Data is pieces of information recorded in an experiment because data are individual pieces of factual answer recorded and used for the analysis
Explanation:
I hope this will help you :)
Select the correct answer from each drop-down menu.
William finds a piece of pure iron in his garden. After a few days, the iron begins to rust. What are the two types of substances involved in the rusting process of iron?
Iron is with one kind of atom that combines with oxygen from the air to form rust (iron oxide). Rust contains two types of atoms, which means it is .
Answer:
A compound
Explanation:
Compounds are made of two or more atoms of different elements, such as water (H2O) and methane (CH4). Atoms are not drawn to scale. Molecules of compounds have atoms of two or more different elements. For example, water (H2O) has three atoms, two hydrogen (H) atoms and one oxygen (O) atom.
Answer it plz the answer is easy but cant undersatand
Answer:
2.
a. 3 meters^3 is the volume.
Explanation: This is when we find the volume of a rectangular prism which is whl so, 2*1.5*1=3^3.
b. 3000 is the mass.
Explanation: Density is calculated by mass/volume so, 1000=m/3. When we multiply 3 to both sides, we get 1000*3 which is 3000. So, 1000=3000/3.
Hope this helps!!! PLZ MARK BRAINLIEST!!!
"We the people of the United States, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defense, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this Constitution for the United States of America." - The United States Constitution According to the Preamble, which action would be allowed by The Constitution?"We the people of the United States, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defense, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this Constitution for the United States of America." - The United States Constitution According to the Preamble, which action would be allowed by The Constitution? A) helping businesses pay their workers less B) giving Congress the power to create courts C) granting government the power to seize people's property D) securing the rights of the wealthy over the rights of the poor
The correct answer is B) Giving Congress the power to create courts
Explanation:
One of the principles the Constitution mentions in the preamble is Justice, this is mentioned in "We the people of the United States, in order to form a more perfect union, establish justice..." According to this, a priority is to make the country have justice, which is possible through courts, laws, among others. In this context, the action that would be allowed is "Giving Congress the power to create courts" because this might ensure the justice principle is applied in the U.S.