I need to know what the answer is
Answer:
F = M a fundamental Newton's equation
F = 3 kg * 3 m/s^2 = 9 kg m / s^2 = 9 Newtons
A car travels 100 m in 4 s on a highway going east. What is the velocity of the car?
Answer:
velocity =25Explanation:
Average velocity =total displacement /time e takenso,average velocity =total displacement
total time taken
100m/4 =25
velocity =25A buoy is anchored tho the oceanfloor. A large wave approaches the buoy. How will the buoy move as the wave goes by?
Answer:
The buoy will move upwards and downwards and well as left and right
Explanation:
As the wind is storing so had the capability to move the buoy in all directions as it is a light object despite being anchored down
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A planar insulating sheet with an infinitesimal thickness has charge per unit area σ and is parallel to the x−z plane, as shown. (The arrows indicate that the object extends for a long distance in the horizontal plane.) By the symmetry of the problem, the electric field may be expressed as E⃗ =Ej^. This problem relates the change in the electric field from the lower side to the upper side of the insulating sheet to the surface charge density.
a) Enter a vector expression, in Cartesian unit-vector notation, for the electric field at points just above the planar insulating sheet.
b)Enter a vector expression, in Cartesian unit-vector notation, for the electric field at points just below the planar insulating sheet.
a. The electric field above the planar insulating sheet is Ej = (σ/ε₀)j
b. The electric field below the planar insulating sheet is -Ej = -(σ/ε₀)j
a. Electric field above planar insulating sheetThe electric field above the planar insulating sheet is Ej = (σ/ε₀)j
Gauss's law
Using Gauss' law ε₀∫E.dA = q where
ε₀ = permittivity of free space, E = electric field vector normal to the surface above the planar insulating sheet = Ej, dA = normal vector to surface above the planar insulating sheet = dAj, q = charge enclosed by Gaussian surface on planar insulating sheet = σA where σ = surface charge density and A = area of surfaceNow, ε₀∫E.dA = q
ε₀∫Ej.dAj = σA
ε₀∫EdA = σA
ε₀E∫dA = σA
ε₀EA = σA
ε₀E = σ
E = σ/ε₀
So, the electric field above the planar insulating sheet is Ej = (σ/ε₀)j
b. Electric field above below insulating sheetThe electric field below the planar insulating sheet is -Ej = -(σ/ε₀)j
Gauss's law
Using Gauss' law ε₀∫E.dA = q where
ε₀ = permittivity of free space, E = electric field vector normal to the surface below the planar insulating sheet = -Ej, dA = normal vector to surface below the planar insulating sheet = -dAj, q = charge enclosed by Gaussian surface on planar insulating sheet = σA where σ = surface charge density and A = area of surfaceNow, ε₀∫E.dA = q
ε₀∫-Ej.-dAj = σA
ε₀∫EdA = σA
ε₀E∫dA = σA
ε₀EA = σA
ε₀E = σ
E = σ/ε₀
So, the electric field below the planar insulating sheet is -Ej = -(σ/ε₀)j
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Kiting during a storm. The legend that Benjamin Franklin flew a kite as a storm approached is only a legend — he was neither stupid nor suicidal. Suppose a kite string of radius 2.02 mm extends directly upward by 0.823 km and is coated with a 0.506 mm layer of water having resistivity 159 Ω·m. If the potential difference between the two ends of the string is 186 MV, what is the current through the water layer? The danger is not this current but the chance that the string draws a lightning strike, which can have a current as large as 500 000 A (way beyond just being lethal).
Answer:
The current is [tex]I = 1.1434*10^{-5}}\ A[/tex]
Explanation:
From the question we are told that
The radius of the kite string is [tex]R = 2.02 mm = 0.00202 \ m[/tex]
The distance it extended upward is [tex]D = 0.823 km = 823 \ m[/tex]
The thickness of the water layer is [tex]d = 0.506 mm = 0.000506 \ m[/tex]
The resistivity is [tex]\rho = 159\ \Omega \cdot m[/tex]
The potential difference is [tex]V = 186 MV = 186 *10^{6} \ V[/tex]
Generally the cross sectional area of the water layer is mathematically represented as
[tex]A = \pi r^2[/tex]
Here r is mathematically represented as
[tex]r = [(R + d ) - R][/tex]
=> [tex]r = [(0.00202 + 0.000506 ) - 0.00202][/tex]
=> [tex]r = 0.000506[/tex]
=> [tex]A = 3.142 * [0.000506]^2 [/tex]
=> [tex]A = 8.0447*10^{-7}\ m^2 [/tex]
Generally the resistance of the water is mathematically represented as
[tex]R = \frac{\rho * D }{A}[/tex]
=> [tex]R = \frac{159 *823 }{8.0447*10^{-7}}[/tex]
=> [tex]R = 1.62662 * 10^{11} \ \Omega [/tex]
Generally the current is mathematically represented as
[tex]I = \frac{V}{R}[/tex]
=> [tex]I = \frac{186 *10^{6} }{1.62662 * 10^{11}}[/tex]
=> [tex]I = 1.1434*10^{-5}}\ A[/tex]
what is a mitochondria
Answer:
The mitochondria, also known as the mitochondrion, is the organelle that produces energy in living organisms.
Explanation:
This organelle is found in Eukaryotic cells. This organelle converts energy into food molecules through a process known as cellular respiration.
I hope this helps you
:)
The work done in holding a 60 kg object at a height of 2 m above the floor for 20 s is
Answer:
zero
Explanation:
The work done is zero because the object has no displacement
Will give brainlist and many points.
What happens when a plane passes the speed of sound?
How does it sound?
Is the sound super high since the wavelength is super low or maby even non existent?
How does it look and why does it look that way?
How will it affect people on ground?
Answer as many of the questions as possible. You can also send links beside your answers for me to read.
Please make your answers understandable with reasoning backing it.
Answer:
They create enormous amounts of sound energy, much like explosion. When an aircraft passes through air, it creates a series of pressure waves just like the waves created by the boat. As the speed of aircraft increases these waves are forced to compress.
Answer:
What happens when a plane passes the speed of sound?
Answer - You hear a loud BOOM then you cant hear it
How does it sound?
Answer - there is no sound
Is the sound super high since the wavelength is super low or maybe even non-existent?
Answer - When its about to break the sound barrier it makes a high pitched sound
How does it look and why does it look that way?
Answer - Its air you cant see it ;-;
How will it affect people on ground?
you will hear the sound and it might hurt but nothing else
Explanation:
A drone flies 8 m/s due East with respects to the wind. The wind is blowing 6 m/s due North with respects to the ground. What is the speed of the drone with repeat to the ground? A. 14m/s B. 10m/s C. 2m/s D. 20m/s
Answer:
v=10 m/s
Explanation:
Given that,
Speed of a drone is 8 m/s due East with respects to the wind
Speed of a drone 6 m/s due North with respect to the ground.
We need to find the speed of the drone with respect to the ground. Let v is the speed. It is given by the resultant of two speeds.
[tex]v=\sqrt{8^2+6^2} \\\\v=10\ m/s[/tex]
So, the speed of the drone with respect to the ground is 10 m/s.
Hi. If a body with a positive charge touches another with a positive charge, do any of them lose electrons?
The perimeter the sphere is the extreme to which they can go. If ... But what happens if a positively charged object is touched to a neutral object? ... The metal sphere loses electrons.
Who traveled the farthest after 60 minutes?
Answer:
Is it only me who can't understand your question?
Pls give the full question ...
Hope you have a great day!
Take another look at line 1. Suppose that you use distance and time between any pair of neighboring dots to calculate speed:
speed = distance ÷ time
Will this speed be the same or different from the average speed you calculated in part F? Why?
Answer:
The time of travel and the distance between neighboring dots is always the same. So, the speed between neighboring dots is constant. This speed will be the same as the average speed in part F. hope it helps!
The density of blood is 2kg/m.convert to g/cm
Explanation:
if we convert it into g/cm it'll be
2000 grams
Calculate the displacement in m and velocity in m/s at the following times for a rock thrown straight down with an initial velocity of 11.4 m/s from the Verrazano Narrows bridge in New York City. The roadway of this bridge is 70.0 m above the water. (Enter the magnitudes.)
(a)
0.500 s
displacement
velocity
Answer:
y = 6.92[m]
Vf = 16.305[m/s]
Explanation:
To solve this problem we must use the following kinematics equations, where we must first find the final velocity.
[tex]v_{f}=v_{i}+(g*t)[/tex]
where:
Vi = initial velocity = 11.4[m/s]
Vf = final velocity [m/s]
t = time = 0.5[s]
g = gravity acceleration = 9.81[m/s^2}
Note: the positive sign in the equation above is because the acceleration of gravity goes in the direction of the motion of the rock.
Vf = 11.4 + (9.81*0.5)
Vf = 16.305 [m/s]
Now we can calculate how far the rock goes, using the following equation:
[tex]v_{f} ^{2}= v_{i} ^{2}+(2*g*y)\\v_{f} ^{2}- v_{i}^{2} = 2*g*y\\y = \frac{v_{f} ^{2}- v_{i}^{2}}{2*g} \\y = \frac{16.305^{2}-11.4^{2} }{2*9.81}\\ y=6.92[m][/tex]
Therefore the Rock will be (70 - 6.92) = 63.07 [m] above the water level
A transformer has 10,000 windings on the primary side and 5,000 windings on the
secondary side. 100 volts is applied to the primary side. What is the anticipated voltage
on the secondary side? Is this a step-up or step down transformer?
Answer:
50 V; step-down transformer
Explanation:
10,000 : 5,000 = 100 : V
V = 50 V
From 100 V change to 50 V, so it is a step-down transformer
The sphere-rod combination can be pivoted about an axis that is perpendicular to the plane of the page and that passes through one of the five lettered points. Through which point should the axis pass for the moment of inertia of the sphere-rod combination about this axis to be greatest?
The point A with the higher mass of 10kg will have the greatest moment of inertia.
What is Inertia?This can be defined as the resistance of any physical object to a change in its velocity.
Masses which have the highest values and are further away form the axis of rotation have the greatest moment of inertia which was why point A was chosen as the most appropriate choice.
Read more about Inertia here https://brainly.com/question/1140505
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The planets move around the center star in different orbits. Which planet has more Vittar is in the same relative position from its star as earth’s orbit isfrom this Sun?
Do you think it’s ethical for tech companies to use your personality type, browsing habit,and online behavior to personalize your experience
Answer:
Yes. Yes. Yes
Explanation:
Answer Is yes
Can someone help me!
Answer:
Explanation:
For example 1, there is no friction, so the acceleration in example 1 is:[tex]\sum F=F=100=ma \rightarrow a=\frac{100}{50}=2 ms^{-2}[/tex]
For example 2, there is a friction, so the acceleration in example 2 is:
[tex]\sum F=F-f=100-40 = 60 = ma\rightarrow a_{2}=\frac{60}{50}=1.2 ms^{-2}[/tex]
Here we can say that "according to Newton's 2nd Law, the box in example 2 has less acceleration than in the example 1". So, the claim is denied.
Based on the levels of processing memory model, place in order how deeply the following information about dogs will be encoded, from the shallowest to the deepest.
From the question, the order of information processing from the shallowest to the deepest is;
A person glances at a magazine and sees a picture of a dog.A person can remember all the breeds of dogs because she knows a song that lists them.A person dog-sits and spends the weekend walking and playing with a dog A person who grew up with a dog enjoyed walking in the woods with her pet.What is information processing?
The term information processing means the way in which we deal with information. It is the process by which information is encoded into our memory.
The following is the order of information processing from the shallowest to the deepest;
A person glances at a magazine and sees a picture of a dog.A person can remember all the breeds of dogs because she knows a song that lists them.A person dog-sits and spends the weekend walking and playing with a dog A person who grew up with a dog enjoyed walking in the woods with her pet.Learn more about memory processing: https://brainly.com/question/24863946
A, B, and C are three successive points on a straight line. AB = 6.0 m, and BC = 10.0 m.
A small object moving along this line from rest with uniform acceleration, passes B and C, 2.0 s
and 4.0 s, respectively, after passing A. Calculate the
i)
acceleration of the body,
Answer:
1 m/s²
Explanation:
Let velocity at A be v,
Use d = v*t + at²2/2
From A to B,
6 = v(2) + a(2²)/2 = 2v + 2a, so
v + a = 3 (1)
From A to C,
6 + 10 = v(4) + a(4²)/2
16 = 4v + 8a
or, v + 2a = 4 (2)
From (1) (2), get
a = 1 m/s²
A spring with a force constant of 5.0×104 N/m is initially at its equilibrium length.
How much work must you do to stretch the spring 0.070 m?
How much work must you do to compress it 0.070 m?
(a) The work done in strecthing the spring is 122.5 N.
(b) The work done in compressing the spring is -122.5 N.
Work done to stretch the spring
The work done in stretching a spring is positive since the applied force acts in the same direction as the displacement.
The work done in strecthing the spring is calculated as follows;
W = ¹/₂kx²
W = ¹/₂ x (5 x 10⁴) x (0.07)²
W = 122.5 N
Work done in compressing the springThe work done in compressing the spring is negative, since the applied force acts in opposite direction to the displacement of the spring.
The work done in compressing the spring is calculated as follows;
W = -¹/₂kx²
W = -¹/₂ x (5 x 10⁴) x (0.07)²
W = -122.5 N
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6.When light bends it is called
a - broken
b- benzene
C - reflection
d - refraction
Answer:
D refraction
Explanation:
I had a question like this so and I got it right so I believe this is the correct answer
list down the advantages and disadvantages
of the micrometer
guage
over vernier
Caliper?
Screill
An 80 N bowling ball has an apparent weight of 60 N when completely submerged in water. What is the average density of the bowling ball
Answer:
V * ρB = WB volume of ball * density of ball = weight of ball
V * ρW = Ww volume of ball * density of water = buoyant force
ρB / ρW = WB / Ww = 80 / 20 = 4 water provides 20 N of buoyant force
ρB = 4 ρW = 4 gm/cm^3
ρW = 1000 kg / m^3 = 1 gm / cm^3
(1 gm/cm^3) = .001 kg / .000001 m^3 = 1000 kg/^3
ρW = 1 gm / cm^3
multiply by 9.8 or 980 to get weight densities
In this case
4 * 1000 kg/m^3 * 9.8 m/s^2 = 39200 N /m^3 weight density of ball
A block-spring system oscillates on a frictionless horizontal surface. The time needed for the block to complete one cycle is 0.1 sec. Determine the time needed for the block to travel from -A/2 to A/2, where A is the amplitude of motion
The time needed for the block to travel from -A/2 to A/2 is mathematically given as
t=0.5sec
What is the time needed for the block to travel from -A/2 to A/2?Generally, when the start point is the mean intial position and it goes from A/2 down through the right goes through and fro back to the mean position, and this is after it must have gone through -A/2. Hence it has finished one cycle (0.1 sec.)
In conclusion, for an -A/2 to A/2 oscillation, then it will finish half-cycle given time period to be
t=1/2
t=0.5sec
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weather meaning of physics
Answer:
1. The day-to-day conditions of the atmosphere at a place with respect to elements like humidity, temperature, wind speed, rainfall, etc. is called the weather of that place.
2. Weather can be cloudy, sunny, rainy, stormy or clear. It is a part of the natural phenomenon which maintains the equilibrium in the atmosphere.
3. But conditions can be worse sometimes. When the atmospheric conditions are extreme or intense enough to cause property loss or life loss, such weather is termed as severe weather.
4. These also vary according to the altitudes, latitudes, and region and pressure differences. Tornadoes, cyclones, heavy rainfall, fog, winter storms come under this category. They are disastrous and hazardous. Proper disaster management and strategies are required to handle these conditions.
You want to double the radius of a rotating solid sphere while keeping its kinetic energy constant. (The mass does not change.) To do this, the final angular velocity of the sphere must be Group of answer choices
The Final angular velocity of the sphere is : Half of its initial value ( W/2 )
Kinetic energy of a rotating body
Given that The kinetic energy of a rotating body ( K ) = 1/2 IW² --- ( 1 )
where : I = moment of inertia, w = angular velocity
I = [tex]\frac{2}{5} MR^{2}[/tex]
Therefore equation ( 1 ) becomes
K = [tex]\frac{1}{5}MR^2W^2[/tex] ----- ( 2 )
After doubling the radius
R' = 2R
K' = K
Mass = unchanged
therefore :
[tex]\frac{1}{5}MR'^2W'^2 = \frac{1}{5}MR^2W^2[/tex]
= ( 2R )² W'² = R²W²
Resolving equation above
Hence : W' ( new angular velocity ) = W / 2
In conclusion The Final angular velocity of the sphere is : Half of its initial value ( W / 2).
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Assessment started: undefined.
Item 1
Select a word from the drop-down menu to correctly complete the statement.
The elements fluorine, chlorine, and iodine are all part of the same on the periodic table.
a.diagonal
b.group
c.piriod
d.row
Answer:
Option B: Group
Explanation:
The elements fluorine, chlorine, and iodine are commonly known as halogens.
They all have 7 valence electrons in their outermost shell and thus they all belong to group 7A in the periodic table.
Correct Answer is: Group
Answer:
Explanation:
Group hope this helps
A gecko crawls vertically up and down a wall. Its motion is shown on the following graph of vertical position yyy vs. time ttt.
Graph of y (in meters) vs. t (in seconds) that starts at 6 m at 0sec, decreases linearly to 2m at 4 sec, stays constant at 2m from 4 sec to 7 sec, increases linearly to 5 m from 7 sec to 9 sec, then stays constant until 10 sec
Graph of y (in meters) vs. t (in seconds) that starts at 6 m at 0sec, decreases linearly to 2m at 4 sec, stays constant at 2m from 4 sec to 7 sec, increases linearly to 5 m from 7 sec to 9 sec, then stays constant until 10 sec
What is the average velocity of the gecko between the times t=0\text{ s}t=0 st, equals, 0, start text, space, s, end text and t=7\text{ s}t=7 st, equals, 7, start text, space, s, end text?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
0.57\,\dfrac{\text m}{\text s}0.57
s
m
0, point, 57, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction
(Choice B)
B
-0.57\,\dfrac{\text m}{\text s}−0.57
s
m
minus, 0, point, 57, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction
(Choice C, Checked)
C
-1.0\,\dfrac{\text m}{\text s}−1.0
s
m
minus, 1, point, 0, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction
(Choice D)
D
1.0\,\dfrac{\text m}{\text s}1.0
s
m
Answer:
gfdvcfffddfgffffdrddgfddddghtscgvfrggxfhxdg
Answer:
-.57
Explanation:
Slope from the points (0,6) and (7,2)
2-6/7-0=-.57