Answer:
The universe was hot and dense
Explain how a book can have energy even if it is not moving.
What method is used to find the number of neutrons in an atom?
a
rounded atomic mass - atomic number = number of neutrons
b
atomic number - rounded atomic mass = number of neutrons
c
atomic number - electron number = number of neutrons
d
electron number - atomic number = number of neutrons
Answer:
B
Explanation:
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
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:
Please help me with this!
(Show work)
Answer:
with what? ..................
Strong swimmers do NOT need to restrict themselves to swimming in areas patrolled by lifeguards.
Answer:
I believe you are asking a true or false question, which in that case means the answer is false.
Explanation:
You should always swim in areas patrolled by lifeguards. Even if you're a strong swimmer you can have accidents in the ocean. Lifeguards are there to take care of you in case of an emergency.
Answer: False
Explanation: Edg 2021
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 I'll mark brainliest NO LINKS
Answer:
A, B, C is the answer
Explanation:
A is cut off from all the other light, as well as B so it cant be either, that leaves us with B C and D, Since the 3rd answer is ABC that means your can put a light switch in all 3 of the location so at B and A there will be a light switch and at C there will be a light switch to activate D.
Please help me and I’ll mark as brainliest i promise
Answer:
C
Explanation:
because C should be the correct one
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:
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
Suggest two possible errors in finding the mass of the ruler
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!
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
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
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=
What is the mass of a skier if they are applying a force of 500N and they are accelerating at 20m/s2?
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
We know that,
[tex]force = mass \times acceleration[/tex][tex]500 = m \times 20[/tex][tex]m = \dfrac{500}{20} [/tex][tex]m = 25[/tex]Mass of skier is 25 kg
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.
To learn more about potential energy, click:
https://brainly.com/question/21288807
#SPJ3
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.
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
Learn more: https://brainly.com/question/17237604
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
Like surface water and groundwater, glaciers shape the land through erosion and deposition. Fill in the blanks to complete each statement about glaciers.
Glaciers cause erosion by abrasion and
.
The sediment deposited by glaciers is called
.
When a chunk of ice left behind by a receding glacier melts, the water stays in the kettle, forming a
.
PLEASE HELP
Answer :Glaciers cause erosion by abrasion and
plucking
. The sediment deposited by glaciers is called till.
When a chunk of ice left behind by a receding glacier melts, the water stays in the kettle, forming a kettle lake.
Explanation:
I took the test
A) Glacier causes erosion by abrasion and plucking.
B) The sediment deposited by glaciers is called a moraine.
C) When a chunk of ice remained behind by a receding glacier melts, the water stays in the kettle, forming a kettle lake.
What are abrasion, plucking, and moraine?Abrasion contains the wear, polishing, and scratching produced in the bedrock by the thicker rock fragments brought by the ice, and in that way, grooves are formed.
Plucking generally takes place when advancing ice will push against fractured bedrock. Additional breaks can produce stress, while warmer temperatures and friction from glacier movement can bring the melting.
Moraine is the deposit of trawls of material fragmented by glaciers, which create mountain ranges because of their accumulation.
Glaciers are contacted by ice deposits due to continental glaciation. These forms develop with the glacier outwash and leave ice deposits. It generates a kettle lake when a large chunk of ice left a depression in the glacial drift when the ice melts a kettle-like hole is formed.
Learn more about abrasion and plucking, here:
https://brainly.com/question/306723
#SPJ2
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 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!
A student walks a distance of 3 km in 20 minutes calculate his average speed
Answer:
His average speed is 0.15 kilometer per minute or 2.5 meters per second.
Explanation:
average speed = distance/time
x = 3 km/20 minutes
x = 0.15
—
x = 3000 m/1200 s
x = 2.5
If a student walks a distance of 3 km in 20 minutes then the average speed of the student would be 9 kilometers per hour.
What is speed?The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object.
As given in the problem we have to calculate the average speed of the student if a student walks a distance of 3 km in 20 minutes.
The distance traveled in 20 min = 3 kilometers
The distance traveled in 60 min = 3 × 3
= 9 kilometers
Thus, If a student walks a distance of 3 km in 20 minutes then the average speed of the student would be 9 kilometers per hour.
To learn more about speed here, refer to the link given below ;
brainly.com/question/7359669
#SPJ2
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:
What is equilibrium?
Answer: Equilibrium is the state in which market supply and demand balance each other, and as a result prices become stable. The balancing effect of supply and demand results in a state of equilibrium.
This is the answer please ap mujhe follow kar lo please