Answer:
You subtract the atomic number from the atomic mass to find the number of neutrons alone
Explanation:
The atomic number is the number of protons OR electrons. They are both equal thus making the atom have a neutral charge. The relative atomic mass is the number of protons AND neutrons.
I don’t have a question
Answer:
Um okay? thank you for the points have a good say and be careful out there!
Explanation:
Answer:
hello
Explanation:
After three half lives what fraction of the original sample would remain? Explain
Answer:
1/2^3 or 1/8
Explanation:
what is the name of the database that Tim Berners Lee built??
Answer:
ENQUIRE is the answer
Explanation: google....internet browser-.. .-.
Enquire was a software project written in 1980 by Tim Berners-Lee at CERN, which was the predecessor to the World Wide Web
What are used for manufacturing paper along with wood and chemicals
Answer:
Paper and pulp are made from cellulosic fibers and other plant materials. Some synthetic materials may be used to impart special qualities to the finished product. Paper is made from wood fibers, but rags, flax, cotton linters, and bagasse are also used in some papers.
create a rap song about physics please :)
Answer:
LOL i did this in 5th grade. Here is the one i made then. (its very short)
"Space! Its outta this world.. the phases of the moos and the constellations!
space, space, space, space. Science! its made up of physics! gravity holds us down and nobody see it! science... science... science... science...
OMG that was the worst rap ever lol. it probably will not help but still.
Answer: Kinematics is the movement of things that aren't anomalies
Don't do type 2 unless you're cool with trigonometry
It gives us the notion that we can study stuff's motion
Newton made laws, not just a potion
'Cause gravity causes downward acceleration
Of course it's easier to use energy conservation
Impulse is force times time, but don't be fooled
Inelastic collisions don't conserve no Joules
Collisions and explosions have conservation of momentum
Rotational motion disturbs my duodenum
Apply force to some metal and you get a neat fork
Add theta to that force and end up with mad toque
[Chorus]:
Physics concepts make the world go 'round
But try to apply them and watch your grade go down
When you get the warm fuzzies man you feel fantastic
They call me Young Modulus 'cause my raps are elastic
Solid are just springs that can be compressed
Apply a perpendicular force, call it tensile stress
Shoutout to Yosef for giving me the name
He be doing mad problems like it's all a game
[Verse 2]:
I travel at high speeds, call it special relativity
I might not be as long, but girl, you know you're into me
Magnetism positively fills me with satisfaction
Add a negative and there will be a great attraction
Amp up your circuitry and you'll score a slam dunk
You'll be resisting those Ohms like a Buddhist monk
Row, row, row your boat
'Cause Rho equals density, which is needed to float
Sucking is a vacuum of pressure disparity
Add so many variables that you'll be begging me for clarity
Cut the supporting rope and loosen the tension
There are many topics that I have yet to mention
[Chorus]:
Physics concepts make the world go 'round
But try to apply them and watch your grade go down
When you get the warm fuzzies man you feel fantastic
They call me Young Modulus 'cause my raps are elastic
Solid are just springs that can be compressed
Apply a perpendicular force, call it tensile stress
Shoutout to all of you for listening to this song
We're almost done now, I won't keep you too long
[Bridge]:
Nothing can hold back my rhymes, they're so phonetic
No force nor friction: static or kinetic
They say the Bulk Modulus can hold the most pressure
But it can't live up to Young 'cause I fill you with pleasure
Now for a lesson in acoustics, the study of sound:
Put your hands in the air and scream real proud!
*Physics chant*
[Chorus]:
Physics concepts make the world go 'round
But try to apply them and watch your grade go down
When you get the warm fuzzies man you feel fantastic
They call me Young Modulus 'cause my raps are elastic
Solid are just springs that can be compressed
Apply a perpendicular force, call it tensile stress
Shoutout to Mr. Fisher for inspiring this rap
He's got mad teaching skills so I'll give him a clap
*Claps*
If you have 3,451 mL of H20, how many liters do you have
Answer:
3.451L
Explanation:
you divide by 1,000
First 5.4 to the north that 2.1 to the south and finally 9.3 to the north
solve for the magnitude of the resultant
Answer:
Since you are asking for magnitude only, 12.6 units is the resultant. If you were looking for the full answer, 12.6 units North would be your answer
Explanation:
There there are 2 forces acting in the north direction add them up 5.4+9.3
this equals 14.7 since there is also something acting in the opposite direction, subtract that from the total of the previous two, 14.7-2.1,
and your final answer will be 12.6 units
2.56x10-3 to m,cm,gm,mm and nm
Answer:
need help search it up
Explanation:
hehe..
after putting ice on top of the glass and submerging the glass at the bottom in how water,were you able to separate the glasses? what do you think happen on the molecules of theses glasses?
Answer:
Explanation:
The simultaneous expansion and contraction of the layers should nonstick even the most stubborn glassware!!
Which acceleration graph corresponds to the pressure graph shown?
A. Graph A
B. Graph B
C. Graph C
D. Graph D
Answer:
Graph D
Explanation:
ANSWER FAST PLZZ!!
Egypt is conducting an experiment on speed. She is measuring the speed of another middle schooler as she walks from science class to math class in her school. The graph below represents the speed of one of her friends as she walks the 20 meters over 5 minutes.
Speed Graph
Answer:
See the answer below
Explanation:
The two correct options are:
1. The student traveled the fastest between 4 and 5 minutes
2. The average speed of the student is 4 meters per minute
Between 4 and 5 minutes, the approximate distance of 7 meters covered by the student is the longest of all the distances covered per minute. Since speed is a measure of distance covered relative to time, it means that the student traveled the fastest between these periods.
The average speed is calculated by dividing the total distance traveled by a body by the total time taken to cover the distance.
From the graph:
Total distance covered = 20
Total time taken = 5
Average speed = 20/5 = 4 meters per minute
All the remaining conclusions are incorrect or indeterminate going by the information on the graph.
Joey ran at a speed of 18 km/h for a total of 2 hours. How much distance did he
cover? -
Answer:
36km
Explanation:
Which graph of motion shows the motion of an object in equilibrium?
Answer:
The graph line that doesn't change in amounts.
Explanation:
Meaning if its a straight line horizontally across it is in equilibrium. If you don't know what I mean, search up equilibrium graph, and it will show you what I am talking about.
A pool ball moving 1.33 m/s strikes an identical ball at rest. Afterward, the first ball moves 0.814 m/s at a 33.3° angle. What is the x-component and y-component of the velocity of the second ball? pls help quick
Answer:
X - component = v2 = 0.650 m/s
Y - component = v2 = 0.447 m/s
Explanation:
Given that :
Conservation of momentum
m1u1 + m2u2 = m1v1 + m2v2
m = mass of pool ball ; u = initial velocity ; v = final velocity
Since the masses are identical
x - component
u1 + u2 = v1 + v2
u1 = 1.33 m/s
u2 = 0
Final speed of first ball = 0.814 m/s at an angle of 33.3° ;
v1 = 0.814*cos33.3 = 0.814 * 0.8358073 = 0.6803471 m/s
v2x = u1x + u2x - v1
v2x = 1.33 + 0 - 0.6803471
v2x = 0.6496529 m/s
v2x = 0.650 m/s
Y - component :
v1sinθ= 0.814*sin33.3 ; 0.814 * 0.5490228 = 0.4469045 m/s
v2y = 0.447 m/s
Answer:
the y component is -0.477
Explanation:
u1+u2=v1+v2
u1=1.33, u2=0, v1= 0.814sin(33.3)= 0.477, v2=?
so, 1.33+0=0.477+x =
-0.477
QUICKLY I AM IN THE LESSON NOWWW
So I need you to write a hypothesis about finding and marking stars on "Worldwidetelescope", I dont know how to start a hypothesis and a paragraph about what I did in this project. I know what I did but someone have to help me with the hypothesis and how to start the paragraph and please make a list of everything it should include, Thank you!!
Answer:
I don't really know much about the whole stars thing, but I've written a lot of paragraphs in science
Explanation:
Remember:
A paragraph should be in CER formation: Claim (hypothesis/discovery), Evidence, and ReasoningYour reasoning should never start with I believe or I think, your reasoning and evidence are 100% fact basedThe actual hypothesis should only be 1-2 sentences and be straight to the pointInclude:
for your hypothesis, keywords relating to your subject, I'm assuming for your topic you should include things like marking, telescope, stars, etc.why you believe your hypothesis is true so use prior knowledge to justify your hypothesisВизначте ККД двигуна трактора (у відсотках), яким для виконання роботи 1,89∙106 Дж знадобилося 1,5 кг палива з питомою теплотою згоряння 4,2∙106 Дж/кг.
Відповідь:
30%
Пояснення:
Ефективність машини виражається за допомогою виразу:
Ефективність = Вихід / Робоча потужність × 100%
Результат роботи = 1,89 × 10 ^ 6 Джоулів
Вхідні дані = 1,5 × 4,2 × 10 ^ 6
Вхідні дані = 6,3 × 10 ^ 6
Підставимо у формулу:
Ефективність = (1,89 × 10 ^ 6) / (6,3 × 10 ^ 6) × 100%
Ефективність = 1,89 / 6,3 × 100
Ефективність = 189 / 6,3
Ефективність = 30%
Отже, ефективність двигуна трактора становить 30%
Someone says, "When we burn coal, we are using the energy of ancient sunlight." Write a scientific explanation of what this means.
help! 50 points each and brainliest!!!
Atoms of iron (Fe) form metallic bonds with other iron atoms. How are the valence electrons of these atoms rearranged to form the bonds?
A few valence electrons are shared between the atoms.
Many valence electrons are shared between the atoms.
Electrons are transferred from the iron atoms to atoms in the air.
Electrons are transferred to the iron atoms from atoms in the air.
Answer:
Your answer is the following...
(b)"Many valence electrons are shared between the atoms"
Explanation:
Answer:
b
Explanation:
edge 2020
how does 1 horsepower compare to 1 watt power
Answer:
they both use power how much it has
Explanation:
i think
Answer:
1 horsepower is a unit of power equal to 746 watts 1 watt is a unit of power equal to 1 joule per second.
Explanation: Working on it for homework right now and using my textbook
The energy available to primary consumers in an energy pyramid is 800 kilocalories. Approximately how much energy is used by the primary consumers for their
physical functions?
720 kilocalories
80 kilocalories
780 kilocalories
800 kilocalories
Answer:
b
Explanation:
Joel inflates a balloon and ties it off. He then rubs the balloon against his hair, which makes his
hair stand up. He then places the balloon near the classroom wall and sticks it to the wall. Finally, he
pops the balloon with a pin. Which of these is an example of gaining a charge by friction in this example?
A. Rubbing the balloon against his hair
B. Placing the balloon near the classroom wall
C. Touching the balloon to the classroom wall
D. Popping the balloon with a pin
Answer: I Believe Its A. :)
Which of the following pressure graphs matches the simulation snapshot shown below?
A. Graph A
B. Graph B
C. Graph C
D. Graph D
Answer:
The answer to this question is D
Explanation:
Also all the answers are..
1. B
2. D
3. B
4. D
5. B
A roller coaster travels down a 120 m track in 12.5 seconds how fast does the roller coaster travel? Equation is v=d/t
Answer:
9.6 m/s
Explanation:
Equation is v=d/t so plug 120m to d (distance) and 12.5 sec to t (time).
v=120/12.5
v=9.6 meters per second
If you wanted to learn more about ancient scientific knowledge, whose life
would you research?
What force causes a 1 kg. mass to accelerate at rate of meter per second each second
Answer:
gravity
Explanation:
it pulls everything down and the futher it goes the faster it accelerates gaining lots of speed and gravity is the only force that pulls thangs down
a rope is used to pull a 2.89kg bucket of water out of a deep well. what is the acceleration of the bucket when the tension in the rope is 30.2N?
Answer:
Explanation:
Tension in the rope in upward direction = 30.2 N .
weight of bucket in downward direction = mg
net force in upward direction = 30.2 - mg
30.2 - 2.89 x 9.8
= 1.878 N
acceleration = net force / mass
= 1.878 / 2.89
= .65 m /s² .
= 65 cm /s²
The acceleration of the bucket will be "65 cm/s²".
Tension and acceleration:Whenever the rope, thread, or cable is expanded underneath an applied force, a force is created in that as well, is a tension force.
Tension acts anywhere along the lengths of the string throughout the opposing directly proportional to the force acting upon that.
According to the question,
Tension in the rope = 30.2 N
Mass of bucket, m = 2.89 kg
Acceleration due to gravity, g = 9.8
Now,
The net force will be:
= Tension - mg
= [tex]30.2-(2.89\times 9.8)[/tex]
= [tex]1.878[/tex] N
hence,
The acceleration of the bucket be:
= [tex]\frac{Net \ force}{Mass}[/tex]
By substituting the values,
= [tex]\frac{1.878}{2.89}[/tex]
= [tex]0.65[/tex] m/s²
or,
= [tex]65[/tex] cm/s²
Thus the above approach is correct.
Find out more information about tension here:
https://brainly.com/question/187404
What is the approximate momentum of a car with a mass of 1200 kg and a velocity of 30 - km/hr(8.33 m/s) ?
Answer:
9996kg.m/s
Explanation:
∆p=mv. 1200kg*8.33m/s
The approximate momentum of this car is 9,996 Kgm/s.
Given the following data:
Mass = 1200 kg Velocity = 8.33 m/s
To determine the approximate momentum of this car;
Momentum refers to the product of the mass possessed by an object and its velocity.
Mathematically, momentum is giving by the formula;
[tex]Momentum = mass \times velocity[/tex]
Substituting into the formula, we have;
[tex]Momentum = 1200 \times 8.33[/tex]
Momentum = 9,996 Kgm/s.
Read more on momentum here: https://brainly.com/question/15517471
A 6200kg African elephant charges at a speed of 10 m/s
What is the elephant kinetic energy
Answer:
310000
Explanation:
mass (m) = 6,200kg
speed (v) = 10m/s
kinetic energy = 1/2 × mass × speed 2
KE = 1/2 × m × v2
KE = 1/2 × 6200× (10)2
KE = 3,100 × 100
KE = 310,000 S
The number of particles inside the nucleus will always equal the....?
Explanation:
Scientists define these charges as “+1” and “−1.” In an uncharged, neutral atom, the number of electrons orbiting the nucleus is equal to the number of protons inside the nucleus. In these atoms, the positive and negative charges cancel each other out, leading to an atom with no net charge.
write the help of given diagram calculate the current through each resistor..
Answer:
[tex]i_A[/tex] = 3 A
[tex]i_B[/tex] = 1.8 A
[tex]i_C[/tex] = 1.2 A
Explanation:
Combined resistance of the resisters B and C,
[tex]\frac{1}{R'}=\frac{1}{R_1}+\frac{1}{R_2}[/tex] [Since [tex]R_1[/tex] and [tex]R_2[/tex] are attached in parallel]
[tex]\frac{1}{R'}=\frac{1}{4}+\frac{1}{6}[/tex]
[tex]\frac{1}{R'}=\frac{10}{24}[/tex]
R' = 2.4 Ω
Since, R' and resistor A are in series therefore, total resistance of both the resistors = 2 + 2.4
= 4.4 Ω
Now the current flowing in the circuit 'i' = [tex]\frac{E}{R+r}[/tex]
Here, E = E.M.F. of the cell
R = Total resistance of all resistors attached
r = Resistance of the cell
'i' = [tex]\frac{9}{2.4+0.6}[/tex]
i = 3 A
Current flowing in resistor A = 2 A
And Current in combined resistance of B and C = 3 A
Current flow in the resistors B and C will be in the ratio of C : B,
[tex]\frac{i_C}{i_B}=\frac{B}{C}[/tex]
[tex]\frac{i_C}{i_B}=\frac{4}{6}[/tex]
[tex]\frac{i_C}{i_B}=\frac{2}{3}[/tex]
Therefore, [tex]i_C[/tex] = [tex]\frac{2}{(2+3)}\times 3[/tex] = 1.2 A
[tex]i_B=\frac{3}{(2+3)}\times 3[/tex] = 1.8 A
