Answer:
earth's crust
meatle
outercore
innercore
Answer:
the crust
the mantle core
the outer core
the inner core
there are two types of magnets some of them are _______ and some are _________
Answer:
There are many types of magnets, which are generally divided into two categories: permanent magnet and a soft magnet.
Explanation:
La onda que se muestra en la figura recorre la distancia AB= d =75m en t = 0.15s. Determine: A. La rapidez de propagación B. La longitud de onda C. La frecuencia
ah=d=75m= 0.15s A B C Hola cómo estás das que ases de bueno amiga
particles q1, q2, and q3 are in a straight line. particles q1 = -1.60 x10^-19 C, q2 = +1.60 x10^-19 C, q3 = -1.60 x 10^-19. .001 between each. what is q2.
Answer: it’s 0
Explanation:
Charlize got it right
The charge of the particle q₁ has a magnitude that equals that of proton.
The given parameters:
Charge on particle q1, = -1.6 x 10⁻¹⁹ CCharge on particle q₂, = 1.6 x 10⁻¹⁹ CCharge on particle q₃, = -1.6 x 10⁻¹⁹ CThe particle q₂ is a positive charge whose magnitude is equal to charge of proton.
A proton is a positive charge with a magnitude of 1.6 x 10⁻¹⁹ C. This charge exerts attractive force on a negative charge (electron).
Thus, the charge of the particle q₁ has a magnitude that equals that of proton.
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two identical 1.00 x 10^-4 C charges have an electric potential energy of 100 J. how far apart are they. (Unit = m)
Answer: 0.899
Explanation:
acellus
Answer: 0.899
Explanation: It's right in acellus I just did it
A car was running in the velocity of 72km/h. What will be its velocity after 5s if it's acceleration is -2m/s^2 ?
Answer:
10m/s
Explanation:
a = v- u/ t
=> v = at + u
= -2 × 5 + 20
= 10m/ s. ( 72 km/ h = 20 m/ s)
shoppers often take clothes outside to look at them in daylight before deciding whether to buy why do they do this pls answer
Answer:
Colors appear differently. Different light sources give off different rays that affect the color
The shoppers often take clothes outside to look at them in daylight before deciding whether to buy them because they can see the true color of the clothes only in sunlight where no bulb light is reflecting on the clothes.
What is reflection?A wave will rapidly reverse course and reflect when it hits a barrier between two media. At least a portion of the oncoming wave disturbance remains in the same medium. Regular reflection occurs at plane boundaries in accordance with a simple law.
The angle of incidence, or the angle between the motion of an approaching wave and a perpendicular to the reflecting surface, is equal to the angle between the motion of a reflected wave and a perpendicular (angle of reflection).
The shoppers often take clothes outside to look at them in daylight before deciding whether to buy because the color is true in pure sunlight, the room light, or bulb light the color will appear true.
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Calculate Kinetic Energy The potential energy of a swing is 200 J
at its highest point and 50 J at its lowest point. If mechanical
energy is conserved, what is the kinetic energy of the swing at its
lowest point?
Answer:
150J
Explanation:
Pi = Pf + Kf
200 = 50 + Kf
---> Kf = 150J
The kinetic energy of the swing at its lowest point is 150 J.
What is energy?Energy is the ability or capability to do tasks, such as the ability to move an item (of a certain mass) by exerting force. Energy can exist in many different forms, including electrical, mechanical, chemical, thermal, or nuclear, and it can change its form.
Given in the question the potential energy of a swing is 200 J at its highest point and 50 J at its lowest point
Pi = Pf + K E
200 = 50 + K E
K E = 150 J
The kinetic energy of the swing at its lowest point is 150 J.
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a spherical mirror produces a magnification of -1 on a screen placed at a distance of 40cm from the mirror i) write the type of mirror ii) What is the focal length of the mirror
Answer:
f =-20 cm
Explanation:
Given that,
The magnification of a spherical mirror, m = -1
The image distance, v = 40 cm (for negative magnification)
The magnification of a concave mirror is negative. The mirror showing -1 magnification is a concave mirror.
Let f be the focal length of the mirror. We know that,
[tex]m=\dfrac{-v}{u}\\\\-1=\dfrac{-v}{u}\\\\v=u[/tex]
Object distance, u = -40 cm
Using mirror's formula i.e.
[tex]\dfrac{1}{f}=\dfrac{1}{u}+\dfrac{1}{v}\\\\f=\dfrac{1}{\dfrac{1}{-40}+\dfrac{1}{-40}}\\\\f=-20\ cm[/tex]
So, the focal length of the mirror is 20 cm.
which kind of energy is the most common by-product of the energy transformation?
Answer:
kinetic energy
Explanation:
it is most common
Which projectile will be visibly affected
Answer:
leaf and a balloon is the correct answer
A 150kg motorcycle starts from rest and accelerates at a constant rate along with a distance of 350m. The applied force is 250N and the coefficient of kinetic friction is 0.03. What is the net force applied to the motorcycle?
Answer:
205N
Explanation:
The net force (F) is the difference between the applied force([tex]F_{A}[/tex]) and the kinetic frictional force([tex]F_{R}[/tex]). i.e
F = [tex]F_{A}[/tex] - [tex]F_{R}[/tex] -----------------(i)
Note that;
[tex]F_{R}[/tex] = μmg
Where;
μ = coefficient of kinetic friction
m = mass of the body
g = acceleration due to gravity = 10m/s²
Equation (i) then becomes;
F = [tex]F_{A}[/tex] - μmg -------------------(ii)
Given from question;
m = mass of motorcycle = 150kg
μ = 0.03
[tex]F_{A}[/tex] = 250N
Substitute these values into equation (ii) as follows;
F = 250 - (0.03 x 150 x 10)
F = 250 - (45)
F = 205N
Therefore, the net force applied to the motorcycle is 205N
EASY BRAINLIEST PLEASE HELP!!
-if you answer correctly ill give you brainliest which will give you 100pts-
(if you put links or don't answer accordingly im reporting your account)
Answer:
Solution given:
frequency[f]=60,500,000Hz
velocity[V]=300,000,000m/s
wave length=?
we have
wave length=[tex] \frac{V}{f} [/tex]
=[tex] \frac{300,000,000}{60,500,000} [/tex]
=[tex] \frac{3000}{605} [/tex]=4.96 m
Option A.4.96m
Answer:
Its C, the only thing you do is add both of the numbers and get your answer which is C.
Explanation:
when is the image virtual in a concave mirror?
a crane lifts four pallets of bricks each of which weigh 5000 N. the crane lifts each pallet a height of 30m. the crane takes 4 minutes to do this how much useful power did the crane produce to life the bricks?
Answer:
625 W
Explanation:
Applying
P = W/t.................... Equation 1
Where p = power, W = Work, t = time
But,
W = Force (F) × distance (d)
W = Fd........................ Equation 2
Substitute equation 2 into equation 1
P = Fd/t.................... Equation 3
From the question,
Given: F = 5000 N, d = 30 m, t = 4 munites = (4×60) seconds = 240 seconds
Substitute these values into equation 3
P = (5000×30)/240
P = 625 Watt
An object appears red when viewed with white light. What color would it appear when viewed with blue light?
Answer:
Colour of any object is by the colour of light it reflects i.e if white light is incident on the object,it will reflect blue color.so it will appear blue.But if red light is incident on it,it will not reflect that and absorb it.so as it will not reflect any light it will appear black.
Explanation:
EASY BRAINLIEST PLEASE HELP!!
-if you answer correctly ill give you brainliest which will give you 35pts-
(if you put links or don't answer accordingly im reporting your account)
Answer:
Solution given:
frequency[f]=60,500,000Hz
velocity[V]=300,000,000m/s
wave length=?
we have
wave length=[tex] \frac{V}{f} [/tex]
=[tex] \frac{300,000,000}{60,500,000} [/tex]
=[tex] \frac{3000}{605} [/tex]=4.96 m
Option A.4.96m
Answer:
4.96
Explanation:
Wavelength = Speed ( velocity ) over Frequency
If frequency = 60,500,00 and Velocity = 300,000,000
Then, Wavelength = [tex]\frac{300,000,000}{60,500,00}[/tex] which is equivalent to 4.96
Please help, I need help with this question please
Answer:
The car's kinetic energy is 751,500 J.
The car's potential energy is 0 J.
Explanation:
The kinetic energy equation is used as KE = 1/2mv^2 and the potential energy equation is used as PE = mgh. Your mass for the car is 1670 kg and the velocity would be 30 m/s. 30^2 would equal to 900 and you multiply that by 1670 for 1,503,000. Divide that number by 2 since there is 1/2 behind it to get your car's kinetic energy which is 751,500 J.
The potential energy which is calculated by mass times gravitational energy times height would be 0 J. Because the car is at a standard height on the ground, it would make sense for the height to be 0 meters and when multiplying it, your total potential energy would be 0 J.
0.40N
weight
apple
50 cm
mark
25 cm
45 cm
pivot
Fig. 3.1 (not to scale)
The centre of mass of the apple is 25 cm from the pivot and the centre of mass of the weight
is 45 cm from the pivot.
Calculate
(i) the weight of the apple,
IO
.. [2]
weight =
(11) the mass of the apple.
[1
mass =
Answer:
Explanation:
dwadad
EASY BRAINLIEST PLEASE HELP!!
-if you answer correctly ill give you brainliest which will give you 100pts-
(if you put links or don't answer accordingly im reporting your account)
Answer:
254
Explanation:
Frequency = Velocity over Wavelength
If velocity = 15000 and wavelength = 59
Then Frequency = [tex]\frac{15000}{59}[/tex] which is equivalent to 254
Answer:
Solution given:
frequency[f]=x
velocity[V]=15000m/s
wave length=59m
we have
wave length=[tex] \frac{V}{f} [/tex]
59m=[tex] \frac{15000}{x} [/tex]
x=[tex] \frac{15000}{59} [/tex]=254.Hz
Option B.
And PLEASE NO SCAMED WHAT IS WRONG AND WHAT IS RIGHT PLZZ HELP AND DO IT IN YOUR OWN WORDS BECAUSE MY TEACHER WILL KNOW AND HE WILL FLAGGED ME AND YES I AM N FLVS Science 6th grade so my teacher said i made a excellent hypothesis, recorded my data clearly, identified your variables accurately, analyzing how friction changes based on the surface texture. but what was wrong that i needed to add the total distance traveled for all 3 trials on each surface and then divide by 3 to get the average for each surface texture....
Procedures (4 points)
In this section please list ALL materials you used to complete your experiment, summarize the steps you took to complete the experiment and describe any difficulties or errors you encountered.
If an object rolls over (choose one type of material you used), then it will travel (choose one: the farthest distance/the shortest distance).
If the ball rolls over the carpet then It will travels the farthest distance.
For this lab I used the following materials: ball, books, carpet, floor tile, towel, ruler.
Short summary of what I did: (use words like first, next and last) First I stacked my books, Next I put my ruler next to the book last I put my ball on the top of the books and I let it roll down.
I experienced the following errors while doing my experiment: when I rolled the ball on the carpet it stopped at different centimeters per trial.
Test Variable/Independent Variable:
HINT: What was different about your test groups? What did you choose to test?
The difference about the test groups is they flooring, One was Carpet, Other Tile and Table.
I choose to test the ball if it were to stop at the same spot.
Outcome Variable/Dependent Variable:
HINT: What were you measuring? What data did you record?
I measure the ball rolling down the carpet, tile and table which provided me different data for each measuring.
Distance Object Traveled (in centimeters)
Floor Surface
Trial 1
Trial 2
Trial 3
Carpet
30cm
60cm
90cm
Tile floor
13cm
26cm
39cm
table
18cm
18cm
30cm
Floor Surface
Calculation of the Average (show your work)
Average Distance Traveled (answer)
carpet
30+30+30
90
Tile flloor
13+13+13
39
Table
18+18+18
54
Describe in your own words what friction is.
Friction is a force that opposes motion. Friction is basically the resistance of an object rubbing against another, such as a ball rolling down a hill, friction slows it down when rubbed against the grass.
Describe how friction affected the results of your investigation.
Friction slows down the ball if there no friction then it will make the object continue moving without slowing down.
Does an object travel farther on a smooth or slippery surface or on a rough surface? Why?
The object will travel on a slippery surface farther because when it slippery there no friction so it will travel faster.
Propose another experiment that could be used to demonstrate that friction is a contact force.
A hula hoops will twirl around you and it will stay in the air However it will have in upward force on your hips.
Answer:
just rry
Explanation:
Which diagram represent light with the longest wavelength ?
Answer:
the answer is the diagram B
Which of the following equations is dimensionally invalid
a. v=x+at
b. x=at^2
c. v=[tex]\sqrt{2ax}[/tex]
d. v[tex]v_{f} =v_{i} -at[/tex]
PLEASE ANSWER THIS QUICKLY, I WILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST.
You and some friends are at the park. You find some rope and decide you'd like to
play a game of tug-of-war. Unfortunately, there are 5 people so you can't have an
equal amount of people on each side. One of your friends suggests that the two biggest people should be on one side, while the three smaller people should be on the other side. What do you think would be the best way to divide up the 5 friends for the game of tug-of-war?
Answer:
I would put one of each stronger people on the different teams and then divide up 1 person to one of the strong people and then 1 person to the other stronger person and then take the last person and make them the ref. They get to tell who is the winner and who is the loser.
Explanation:
Again this is just my opinion.
Answer:I agree with the other person
Explanation:
I agree with the other person
electromagnetic waves are ........... by shiny surfaces.
1. reflected
2. refracted
3. absorbed
Answer:
Electromagnetic waves are reflected
Explanation:
Reflection of light (and other forms of electromagnetic radiation) occurs when the waves encounter a surface or other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface. ... This concept is often termed the Law of Reflection.
Electromagnetic waves are reflected by the shiny surfaces. The correct option is 1.
What are electromagnetic waves?These are the rays which mostly come from the Sunlight. It possess energy or defined by energy of photon.
Reflection of light occurs when the waves strike a surface or boundary that does not absorb the energy of the radiation but bounces the waves away from the surface. This is often called the Law of Reflection.
Thus, the Electromagnetic waves are reflected by the shiny surfaces. The correct option is 1.
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The ship was travelling 77 meters per second, 35 degrees above the x-axis Northeast. Determine the magnitude and direction of the horizontal vector component, Vx
Answer:
vₓ = 63.07 m/s
Explanation:
The horizontal vector component of the velocity can be found by the following formula:
[tex]v_x = vCos\theta[/tex]
where,
vₓ = horizontal vector component of velocity = ?
v = magnitude of velocity = 77 m/s
θ = angle with x-axis = 35°
Therefore,
[tex]v_x = (77\ m/s)Cos\ 35^o[/tex]
vₓ = 63.07 m/s
What does "Time (s)” represent in the graph?
Answer:
in graphs .s. means seconds
Explanation:
and m means minutes ...............do u understand dear.............am not that good in math but am accurate about this one
After a nucleus with 85 protons undergoes alpha decay, it has
? protons.
Answer:
After a nucleus with 85 protons undergoes alpha decay, it has 83 protons.
Explanation:
In an alpha particle there are two protons
In the given substance's nucleus, there are total of 85 protons
After the decay, the proton number reduce
The current proton number after decay is
85 -2 = 83
After a nucleus with 85 protons undergoes alpha decay, it has 83 protons.
The number of protons in this nucleus after it undergoes an alpha decay is 83 protons.
Given the following data:
Number of protons in nucleus = 85 protonsTo determine the number of protons in this nucleus after it undergoes an alpha decay:
The chemical symbol for an alpha particle is:
[tex]^{4}_{2} \alpha[/tex]
Therefore, we can deduce the following points about an alpha particle:
Mass number = 4Number of protons = 2After an alpha decay:
Protons = [tex]85-2[/tex]
Protons = 83
Therefore, the number of protons in this nucleus after it undergoes an alpha decay is 83 protons.
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Examine the following image. Which ocean-floor feature is indicated by the arrow in the image? (10 points)
Public Domain
Group of answer choices
Abyssal plain
Continental slope
Guyot
Seamount
Answer:
Continental slope
Answer: The answer is Seamount. A seamount is a submarine mountain located on oceanic crust near mid-ocean. The image shows a very long seamount in Massachusetts and that is formed by volcanic activity in New England Seamounts.
Si un cuerpo adquiere una carga de -0,02 C, ha ganado o ha perdido electrones? Cuantos?
Question :
If a body acquires a charge of -0.02 C, has it gained or lost electrons? Many?
Solution :
We know, charge gained is shown by negative sign.
Since, charged acquired is given as -0.02 C .
Therefore, it is body has gained electrons.
Now, number of electrons is given by :
[tex]n = \dfrac{net\ charge}{charge \ on \ one \ electron}\\\\n = \dfrac{-0.02}{-1.60 \times 10^{-19}}\\\\n = 1.25\times 10^{17}[/tex]
Hence, this is the required solution.
true or false when the net force on an object is zero the forces are unbalanced
the answer is true like and sub to zeelitmotion :