Answer:
Centripetal force is a force that acts on a body moving ion a circular path and is directed toward the center around which the body is moving.
a bubble of air of volume 1cm^3 is released by a deep sea diver at a depth where the pressure is 4.0 atmospheres. assuming its temperature remains constant (T1=T2), what is its volume just before it reaches the surface where the pressure is 1.0 atmosphere?
Answer:
hope this helps!
Explanation:
Volume of the air bubble, V1=1.0cm3=1.0×10−6m3
Bubble rises to height, d=40m
Temperature at a depth of 40 m, T1=12oC=285K
Temperature at the surface of the lake, T2=35oC=308K
The pressure on the surface of the lake: P2=1atm=1×1.103×105Pa
The pressure at the depth of 40 m: P1=1atm+dρg
Where,
ρ is the density of water =103kg/m3
g is the acceleration due to gravity =9.8m/s2
∴P1=1.103×105+40×103×9.8=493300Pa
We have T1P1V1=T2P2V2
Where, V2 is the volume of the air bubble when it reaches the surface.
V2=
Explain how pressure can be used to
change the state of matter
Answer:
Physical conditions like temperature and pressure affect state of matter. ... When the pressure exerted on a substance increases, it can cause the substance to condense. Decreasing pressure can cause it to vaporize. For some types of rock, decreasing pressure can also cause them to melt.
Explain how a book can have energy even if it is not moving.
whats the answer
----------------------------
Answer:
repel each other
Explanation:
The magnitude of the charge of an electron is called... ... If a positively-charged glass rod is suspended so that it turns easily and another positively-charged glass rod is brought close to it, the two rods will... Repel each other.
What is the power of a diverging lens of focal length 0.4 m
a) 2.5
b) 3.5
c)-3.5
d)-2.5
Answer:
-2.5 is the answer to your question
Interpret the data:
Make a claim that answers the scientific question.
A 30.6 kg crate initially at rest on a horizontal floor requires a 100 N 30° with the horizontal force to set it in motion. Find the coefficient of static friction between the crate and the floor
The frictional force opposes the forward motion of the crate. The coefficient of static friction is 0.2.
Using the formula;
Fa = - Ff + mgsinθ
but Ff = μsFN and N = mgcosθ
Hence;
Fa = mgsinθ - μsmgcosθ
μsmgcosθ = mgsinθ - Fa
μk = mgsinθ - Fa/mgcosθ
μk = coefficient of static friction = ?
Fa = horizontal force = 100N
m = mass = 30.6 kg
θ = angle = 30°
g = acceleration due to gravity = 10 m/s^2
Substituting values;
μk = [(30.6 × 10) sin 30°] - 100 / (30.6 kg × 10) cos 30°
μk = 153 - 100/265
μk = 0.2
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if a dolphin swims at 15 m/s for 30 seconds, how far would the dolphin swim?
What do viruses and living things have in common?
Answer:
They contain genetic information needed to produce more viruses in the form of DNA or RNA.
Explanation:
Viruses are extremely small infectious agents that invade cells of all types. Once inside another cell, viruses become hijackers, using the cells' machinery to produce more viruses. Whether viruses constitute living organisms or merely conglomerations of molecules has been a source of debate for many years. One of the fundamental hallmarks of life is the ability to reproduce. Whether viruses have this ability is key to a debate over their status as living things. Some argue that since viruses cannot reproduce independently, they are not alive. However, similar to viruses, there are a few prokaryotes that are obligate parasites and cannot reproduce without a host. But these prokaryotes show another hallmark of life that viruses lack: growth. Once assembled, a virus does not change in size or chemical composition. They lack the machinery for producing energy to drive such biological processes. This makes them radically different from any known organism. Viruses do, however, show some characteristics of living things. They are made of proteins and glycoproteins like cells are. They contain genetic information needed to produce more viruses in the form of DNA or RNA. They evolve to adapt to their hosts. So while it is doubtful viruses are truly alive, they are clearly very similar to living organisms. There is more diversity among viruses than among all groups of living organisms combined. New varieties are constantly being described. It would be nearly impossible to describe all of the groups of viruses and their characteristics briefly. Instead, we will look at the characteristics shared by all viruses, such as their basic structure and general replicative cycle. Then we will discuss the features used to classify new viruses, such as shape and form of genetic material.
Answer:
cell-based life.
Explanation:
Still, viruses have some important features in common with cell-based life. For instance, they have nucleic acid genomes based on the same genetic code that's used in your cells (and the cells of all living creatures). Also, like cell-based life, viruses have genetic variation and can evolve
I need the right answer ASAP NO LINKS!!!
Answer and Explanation:
Water and power come from external sources is the answer.
Open systems are processes that interact with other systems other than itself, including the outside environment.
A washing machines needs to taken in water and power (external sources) for the machine/system to be able to function.
#teamtrees #PAW (Plant And Water)
I hope this helps!
Help! I don't understand.
Answer:
B
Explanation:
Correct Answer: B — 8.20 seconds
Explanation: Assuming no spin, the flight of a golf ball is symmetrical; it takes the same amount of time to go up as it takes to come down. Since it took 4.10 seconds to rise to the top of it's trajectory, it will take another 4.10 seconds to descend, for a total hang time of 8.20 seconds.
Answer:
2
Explanation:
how long does it take for a pap smear to come back
From rest, a car accelerates to 4.2 m/s2 for 10 seconds before winning the race. How far did it run?
Write the final answer in complete sentence.
Answer:
[tex] s = ut + \frac{1}{2} a {t}^{2} \\ u = 0 \\ a = 4.2 \: m {sec}^{ - 2} \\ t = 10sec \\ s = 0 + \frac{1}{2} (4.2) {10}^{2} \\ = 1.2 \times 100 \\\boxed{ s = 120 \: m}[/tex]
What is an example of a chemical change
Answer:
Hello, Rotting, burning, cooking, and rusting are all further types of chemical changes because they produce substances that are entirely new chemical compounds. For example, burned wood becomes ash, carbon dioxide, and water. When exposed to water, iron becomes a mixture of several hydrated iron oxides and hydroxides.
Explanation:
I hape this helps remember to make someone smile today
Suggest two possible errors in finding the mass of the ruler
Newton's 2nd Law of Motion says that Force is equal to the Mass of an object times its Acceleration. With that in mind how would you calculate Acceleration?
Acceleration = Mass/Force
Acceleration = Force/Mass
Momentum (p) = mass x velocity
Acceleration = Accel + er + nation - the first n
Answer: Acceleration = Force/Mass
Explanation:
F = ma
a = F/m
Acceleration = Force/Mass
What two horizontal forces are present as a car is pushed down the driveway?(1 point)
push, velocity
power, friction
power, weight
push, friction
The two horizontal forces that are present as a car is pushed down the driveway are push and friction.
A force refers to that which produces or opposes motion. When force(s) is/are acting on a body, they either cause motion to occur or prevent motion from occurring. An example of a force which opposes motion is friction.
For a car being pushed along a driveway, the two possible horizontal forces that act on it are push which moves it forward and friction which resists its motion.
Learn more: https://brainly.com/question/18754989
Answer:
Push and friction
Explanation:
As per Newton's third law
Every action has an equal and opposite reaction.Here the car is pushed so the force applied is pushing force
The opposition force is frictional force
Option D
pleasseeeee helpp help
Answer:
copper wire
Explanation:
copper wire is a good conductor because it can pull electricity other than dry wood an the others
Please help I'll mark brainliest (NO FKG LINKS)
Answer:
For the first picture the answer is A. and the second picture answer is also A
Explanation:
Answer:
Part 1
C. 10 Coulombs
Part 2
A. The strength of the magnet increased as the amount of current increased.
Explanation:
1. When a voltage is applied to these plates an electrical current flows charging up one plate with a positive charge with respect to the supply voltage and the other plate with an equal and opposite negative charge.
If the capacitors are connected by a conductor they must have equal potentials. If their charges are not +/- Q there will be a potential difference and charges will flow until they are +/- .
2. Based upon the results of the experiment which is graphed, an increase in current increases the number of paperclips picked up. The increase in current produced a stronger magnetic field from the electromagnet created. The ability to pick up paperclips testifies to the strength of the magnet and this strength is because of the current emitted to the coils which in turn magnetizes the nail
Repede sdfakasdfasdf
Answer:
i dontksjsoskskskdijeeiejeiejeieje
Is the following statement a fact or an opinion: Science] can help solve any problem our world faces? Explain your answer
Please help
Answer:
can u repost the question properly
Answer:
It's a fact
Explanation:
There are different types of sciences for every problem that could happen on earth
Please help me and I’ll mark as brainliest i promise
Answer:
C
Explanation:
because C should be the correct one
Tell me the answer what will be in blanks
Answer:
what do you mean by blanks??
Explanation:
i don't get
it
Answer:
ikoon
Explanation:
i think so it ikoon
I NEED THE RIGHT ANSWER ASAP NO LINKS !!!
Which statement about vectors is true?
1:Vectors are quantities described by both velocity and acceleration.
2: Vectors are quantities described by both magnitude and direction.
3: Vectors are quantities described by both speed and movement.
4: Vectors are quantities described by both force and gravity.
Answer: #2
Explanation:
Vectors are described by both magnitude and direction
A 1200kg car traveling at a speed of 29 m/s drives horizontally of a 90m cliff the potential energy is=
Answer:
Sketch the situation.
b. Calculate the potential energy, the kinetic energy, and the total energy of the car as it leaves the cliff.
c. Make a graph displaying the kinetic, gravitational potential, and total energy of the car at each 10 m
increment of height as it drops
Explanation:
The potential energy of the car at that position is 10.6 x 10⁵ J.
What is meant by potential energy ?Potential energy of an object is defined as the energy acquired by the object by virtue its position.
Here,
Mass of the car, m = 1200 kg
Speed of the car, v = 29 m/s
Height of the cliff, h = 90 m
Therefore,
Potential energy of the car, PE = mgh
PE = 1200 x 9.8 x 90
PE = 10.6 x 10⁵ J
Hence,
The potential energy of the car at that position is 10.6 x 10⁵ J.
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Please help me. Brainiest to the correct answer.
A computer uses 40W of power. Calculate the current it draws when connected to a 230V mains supply.
Answer:
0. 174 A
Explanation:
This is similar to your other question
[tex]\boxed{\mathfrak{Power(P)=Voltage(V) \times Current(I)}}[/tex]
Voltage (V) = 230 VPower (P) = 40 W=> 40 = 230 × I
=> [tex]\mathsf{I=\frac{40}{230} }[/tex]
=> I = [tex]\mathsf{\frac{4}{23} }[/tex]
=> I = 0.174 A
I is the current, the computer draws when connected to a 230 V mains supply, and it's SI unit is Amperes.
[tex]\mathfrak{\overline{There\: you \: are!}}[/tex]
How does the mass of an object affect its acceleration?
Answer:
as the mass of an object is increased, the acceleration of the object is decreased & vice-versa.
Explanation:
hope this helps!
on average, how often do impacts large enough to produce mass extinction on the earth occur?
I don't know I can't read that sorry I mean don't understand
1800 cm3 of fresh water of density 1000 km
is mixed with 2200cm of water of density
1025kg3.calculate the density of the mixture.
Answer:
the density of seawater is thousand kg
Explanation:
by the nucleus, protons and neutrons of an atom does it contain more mass
Answer:
Virtually all the mass of an atom resides in its nucleus, according to Chemistry
Explanation: