Answers
Answer:
833 A
Explanation:
See attachment
Related Questions
Where do most movements happen in the Earth's crust?
Answers
Answer: Most of the movements occur along narrow zones between plates, plate boundaries, where the results of plate-tectonic forces are most evident.
Hope this helps!
In the following circuit (Fig.3), calculate the intensity I through the resistance 3 using the principle of superposition.
Answers
Answer:
time
Explanation:
describe what the weather would be like as a warm front passes, then describe what would occur as a cold front passes.
Answers
The air becomes humid during warm front passes and a cold front means a transition where warm air is being replaced by the cold air.What do you mean by weather?
The weather means the atmosphere at a particular place and time with respect to temperature, pressure, cloudiness, wind, etc.
A warm front means when the air is very warm and humid as compared to before.
A cold front is when the air is very colder and drier than the air above it. More than 15 degrees temperature can drop down when a cold front passes.
A cold front will probably bring winds, thunderstorms, and rain.Therefore, the cold front moves faster than the warm front.Learn more about the Weather here:
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A car is moving at 10 m/s and accelerates at 4 m/s2. How fast is the car going after 4
seconds?
Answers
Use the kinematics formula: \(v = v_0+at\)
Your initial velocity is 10 m/s. Your acceleration is 4 m/s². The time elapsed is 4 s. And so,
\(v=10+4(4) \\v= 26 \text{ m/s}.\)
If you pull with a constant force of 400n , how much mechanical work does it take to pull pinball launcher back 0.2meters
Answers
If you pull with a constant force of 400 N for 0.2 meters, then the work done will be equal to 80 J.
What is Work?In physics, the word "work" involves the measurement of energy transfer that takes place when an item is moved over a range by an externally applied, at least a portion of which is applied within the direction of the displacement.
The length of the path is multiplied by the element of a force acting all along the path to calculate work if the force is constant. The work W is theoretically equivalent towards the force f times the length d, or W = fd, to portray this concept.
As per the given information in the question,
Force, f = 400 N
Displacement, d = 0.2 meters
\(Work done(W)=Force(f)*Displacement(d)\)
W = 400 × 0.2
W = 80 J.
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Two objects are dropped from a bridge, an interval of 1.0 s apart, and experience no appreciable air resistance. As time progresses, the DIFFERENCE in their speeds
a.
increases.
b.
remains constant.
c.
decreases.
d.
increases at first, but then stays constant.
e.
decreases at first, but then stays constant.
Answers
Answer: a
Explanation:
two masses m and 2m, approach each along a path at right angles to each other. after collision, they stick together and move off at 2m/s at angle 37° to the original direction of the mass m. what were the initial speeds of the two particles
Answers
Explanation:
the answer is in picture
For an advanced lab project you decide to look at the red line in the Balmer series. According to the Bohr Theory, this is a single line. However, when you examine it at high resolution, you find that it is a closely-spaced doublet. From your research, you determine that this line is the 3s to 2p transition in the hydrogen spectrum. When an electron is in the 2p subshell, its orbital motion creates a magnetic field and as a result, the atom's energy is slightly different depending on whether the electron is spin-up or spin-down in this field. The difference in energy between these two states is ΔE = 2μBB, where μB is the Bohr magneton and B is the magnetic field created by the orbiting electron. The figure below shows your conclusion regarding the energy levels and your measured values for the two wavelengths in the doublet are λa = 6.544550 ✕ 10−7 m and λb = 6.544750 ✕ 10−7 m. (Let h = 6.626069 ✕ 10−34 J · s, c = 2.997925 ✕ 108 m/s, and μB = 9.274009 ✕ 10−24 J/T.) Determine the magnitude of the internal magnetic field (in T) experienced by the electron. When doing calculations, express all quantities in scientific notation, when possible keep six places beyond the decimal, and round your answer off to at least three significant figures at the end.
Answers
Answer:
1.000153 T
Explanation:
The energy change ΔE = hc(1/λb - 1/λa)
= 6.626069 ✕ 10⁻³⁴ J · s 2.997925 × 10⁸ m/s(1/6.544750 × 10⁻⁷ m - 1/6.544550 × 10⁻⁷ m)
= 19.864457907 × 10⁻²⁶(1527942.2438 - 1527988.9374) = 19.864457907 × 10⁻²⁶(-46.6936)
= 927.543052 × 10⁻²⁶
= -9.275431× 10⁻²⁴ J.
This energy change ΔE = 2μBB. So the magnetic field, B is
B = ΔE/2μB where μB = 9.274009 ✕ 10⁻²⁴ J/T
B = -9.275431× 10⁻²⁴ J/9.274009 ✕ 10⁻²⁴ J/T = -1.000153 T
The magnitude of the magnetic field B = 1.000153 T
A boy throws an arrow at an original velocity of 2m / s, aiming to create an angle 0, referring to the balloon at a distance of 3m from the point of departure. Calculate the angle 0 and the height of the arrow.
Answers
Answer:
s=0.204m
Explanation:
Assuming that the arrow is thrown horizontally and there is no air resistance, we can use the following formula to calculate the launch angle 0:
tan(0) = opposite/adjacent = height/distance
where opposite is the height that the arrow reaches and adjacent is the distance to the balloon.
Rearranging the formula, we get:
0 = arctan(height/distance)
0 = arctan(height/3)
Taking the tangent of both sides, we get:
tan(0) = tan(arctan(height/3))
tan(0) = height/3
Now, we need to find the height of the arrow. Using the kinematic equation:
v^2 = u^2 + 2as
where v is the final velocity (0m/s, at maximum height), u is the initial velocity (2m/s), a is acceleration (-9.8m/s^2, due to gravity) and s is the distance travelled vertically until the arrow reaches maximum height.
At maximum height, the final velocity is 0m/s. Therefore, we have:
0 = (2m/s)^2 + 2(-9.8m/s^2)s
Solving for s, we get:
s = 0.204m
Therefore, the height of the arrow is approximately 0.204m.
List 3 components of an electric circuit.
Answers
Answer:
An energy source – like a battery or mains power.
An energy receiver – like a lightbulb.
An energy pathway – like a wire.
Explanation:
Which of the following is a force acting between objects that do not touch? Pls answer in 5-10 min!
Normal force
Frictional force
Electrical force
Applied force
Answers
Answer:
Electrical force
Explanation:
The electrons aren't actually touching each other. Normal is something on something pushed by gravity by they are touching, frictional is rubbing, applied is pushing
How many times larger is the United States water consumption PER PERSON compared to the World water consumption PER PERSON?
Answers
The number of times times larger is the United States water consumption PER PERSON compared to the World water consumption PER PERSON is 100 to 175 gallons of water
How does the United States' use of water compare to that of other countries?Every day, the average American uses 100 to 175 gallons of water. We use almost 4 trillion cubic meters of freshwater annually on a global scale! In some areas, agriculture can use up to 90% of the available freshwater.
Although the water resources in the United States are enormous, they are not limitless. Given that the average American's water footprint, or the total amount of water consumed directly and indirectly, is about twice that of the rest of the world, it is extremely important to save and safeguard this water.
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Force is the amount _____ or _____ on an object
Motion is the action of _____ from one place to another place.
Answers
Answer:
force is the amount of work or pressure given to an object
motion is the action of moving one place to another place
In a DC generator, the generated emf is directly proportional to the
Answers
In a DC generator, the generated electromotive force (emf) is directly proportional to the rotational speed of the generator's armature and the strength of the magnetic field within the generator.
This relationship is described by the equation for the generated emf in a DC generator:
Emf = Φ * N * A * Z / 60
Where:
Emf is the generated electromotive force (in volts),
Φ is the magnetic flux density (in Weber/meter^2\(meter^2\) or Tesla),
N is the number of turns in the armature winding,
A is the effective area of the armature coil (in square meters),
Z is the total number of armature conductors, and
60 is a constant representing the conversion from seconds to minutes.
From this equation, we can see that the generated emf is directly proportional to the magnetic flux density (Φ) and the product of the number of turns (N), effective area (A), and the total number of armature conductors (Z). This means that increasing any of these factors will result in a higher generated emf.
The magnetic flux density (Φ) can be increased by using stronger permanent magnets or increasing the strength of the field windings in the generator.
The number of turns (N) and the effective area (A) are design parameters and can be optimized for a specific generator. Increasing the number of turns or the effective area will result in a higher generated emf.
Similarly, the total number of armature conductors (Z) can be increased to enhance the generated emf.
By controlling and optimizing these factors, the generated emf in a DC generator can be increased, resulting in higher electrical output. However, it is important to note that there are practical limits to these factors based on the design and construction of the generator.
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Need help with both questions FAST. Please actually help
Answers
Answer:
the first one is oil and water and the second one I am between homogeneous mixture and compound
A marble was thrown vertically up the air and came back down to the samelevel in 1.6 s. (using g = 9.81 ms?).(a) What is it initial velocity?(b) What would be the highest height it can reach?(c) How long would it take to reach the highest point?
Answers
ANSWER:
(a) 15.7 m/s
(b) 12.56 m
(c) 0.8 sec
STEP-BY-STEP EXPLANATION:
We can calculate the initial velocity using the following formula:
(a)
\(\begin{gathered} v=u+a\cdot t \\ v=0 \\ \text{therefore:} \\ u=-a\cdot t \\ \text{ replacing} \\ u=-(-9.81\cdot1.6) \\ u=15.7\text{ m/s} \end{gathered}\)(b)
We calculate the height in this way:
\(\begin{gathered} h=\frac{(-u)^2}{2g} \\ \text{ replacing} \\ h=\frac{(-15.7)^2}{2\cdot9.81} \\ h=12.56\text{ m} \end{gathered}\)(c)The time to reach this height would be half the time it takes for the entire journey, that is, 0.8 seconds
At what separation will two charges, each of magnitude 6.0 μC, exert a force of 0.70 N on
each other?
Answers
The given magnitude of the two charges are 6μc and they exert a force of 0.7N on each other. We need to find the distance of separation between the particles.
By Coloumb's Law :-
\(\sf\longrightarrow F =\dfrac{1}{4\pi\epsilon_0} \dfrac{q_1q_2}{r^2} \)
where
q1 and q2 are the two charges r is the distance of separation1/4πe0 = 9 * 10⁹Substitute the respective values,
\(\sf\longrightarrow \) 0.7 = {(9*10⁹) (6*6) (10-⁶ *10-⁶) }/ r²
\(\sf\longrightarrow \) r² = (36*9 * 10-³)/0.7
\(\sf\longrightarrow \) r =√{ 36*9*10-³)/√7 m
\(\sf\longrightarrow \) r = 6* 3* 10-¹ /√70 m
\(\sf\longrightarrow \) r = 0.21 m
And we are done!
The half-life of a radioactive isotope is 210 d. How many days would it take for the decay rate of a sample of this isotope to fall to 0.58 of its initial rate?
Answers
It would take approximately 546 days for the decay rate of the sample of this radioactive isotope to fall to 0.58 of its initial rate.
1. The decay rate of a radioactive isotope is proportional to the number of radioactive atoms present in the sample at any given time.
2. The decay rate can be expressed as a function of time using the formula: R(t) = R₀ * \(e^{(-\lambda t\)), where R(t) is the decay rate at time t, R₀ is the initial decay rate, λ is the decay constant, and e is the base of the natural logarithm.
3. The half-life of a radioactive isotope is the time it takes for half of the radioactive atoms in a sample to decay. In this case, the half-life is given as 210 days.
4. Using the half-life, we can find the decay constant (λ) using the formula: λ = ln(2) / T₁/₂, where ln(2) is the natural logarithm of 2 and T₁/₂ is the half-life.
5. Substituting the given half-life into the formula, we have: λ = ln(2) / 210.
6. Now, we need to find the time it takes for the decay rate to fall to 0.58 of its initial rate. Let's call this time "t".
7. Using the formula for the decay rate, we can write: 0.58 * R₀ = R₀ * e^(-λt).
8. Simplifying the equation, we get: 0.58 = \(e^{(-\lambda t\)).
9. Taking the natural logarithm of both sides, we have: ln(0.58) = -λt.
10. Substituting the value of λ from step 5, we get: ln(0.58) = -(ln(2) / 210) * t.
11. Solving for t, we have: t = (ln(0.58) * 210) / ln(2).
12. Evaluating the expression, we find: t ≈ 546.
13. Therefore, it would take approximately 546 days for the decay rate of the sample of this radioactive isotope to fall to 0.58 of its initial rate.
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what change in the gravitation occurs if the distance between two bodies is doubled by keeping the mass constant?
Answers
Explanation:
Force of gravity = G m1 m2 / r2
now double 'r'
Force = G m1 m2 / (2r) ^2
Force = 1/4 G m1 m2 / r^2 <=====this is 1/4 of the original force of gravity
ONLY answer if you know FOR SURE. if your not 100% on it, DONT FREAKING ANSWER. ONLY IF YOU KNOW FOR SURE!
Which type of graph is best to use with data that shows a comparison of categories?
A. Pie Chart (Circle Graph)
B. Line Graph
C. Bar Graph
D. Frequency Table
Answers
Answer: the answer is (C)
Explanation: Bar graphs show comparisons using number comparisons
1. Objective observations do not include
2. Observations can capture a child's
3. It's important to use observations because they provide
growth.
or
happen
4. Understanding a child's
and
5. After writing an observation, you can use the
milestones a child has accomplished
6. To make sure an observation is objective you can ask yourself, "Did I capture
happened?"
7. One of the ways you can capture your observations is through
8
and
that define child
helps you accurately interpret an observation.
of child development to understand what
what
or
are ways to count specific skills or behaviors and determine when they
9
and
are ways to organize observation data.
10. The federal law which ensures that all children and family education information is confidential
is called
Answers
Objective observations do not include bias or opinions.
Observations can capture a child's strengths and weaknesses
What is an Objective Observation?This refers to the types of observation that is done through the senses through what we see, touch, feel, hear, smell, and taste.
Hence, we can see that objective observation is important because they provide insight into the strengths and needs of a child.
One of the ways you can capture your observations is through note-taking.
The federal law which ensures that all children and family education information is confidential is called The Family Educational Rights and Privacy Act (FERPA)
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If an object continues to accelerate, what happens to its speed?
Answers
If an object continues to accelerate, the speed of the object will also increase.
What is acceleration?Acceleration is the amount by which a speed or velocity increases (and so a scalar quantity or a vector quantity).
The relationship between acceleration and speed is direct.
If the speed is increasing, the car has positive acceleration. When the car slows down, the speed decreases. The decreasing speed is called negative acceleration
Therefore, as the object continues accelerating, the speed increases.
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Describe an comets origin and orbit?
Answers
Answer:
Comets are frozen leftovers from the formation of the solar system composed of dust, rock and ices.They range from a few miles to tens of miles wide, but as they orbit closer to the sun.
Explanation:
Personal computers are a fixture in most business and in many homes.
true or false
Answers
true
Explanation:
computers have become a need in many businesses and homes we now living in a era of technology a computer is now a neccecity
The statement is True.
Personal computers have become an essential fixture in most businesses and households.
They have revolutionized the way we work, communicate, access information, and perform various tasks.
In the business world, personal computers are ubiquitous, serving as indispensable tools for productivity, data management, communication, and decision-making.
From small businesses to large corporations, computers have streamlined operations and enhanced efficiency.
Similarly, in homes, personal computers have become commonplace, enabling individuals and families to connect with the world, pursue online education, engage in entertainment, and manage various aspects of their lives.
With their versatility and functionality, personal computers have become an integral part of modern life, transforming the way we live and work.
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What is the acceleration due to gravity in a region where a simple pendulum having a length 75.000 cm has a period of 1.7357 s?
Answers
Answer:
Explanation:
T = 2π\(\sqrt{L/g}\)
(T / 2π)² = L/g
g = 4π²L/T²
g = 4π²(0.75000)/(1.7357)²
g = 9.82814766...
g = 9.8281 m/s²
8. A unique property of water because of its chemical structure is that it's _____ dense when it's a solid than when it's a liquid.
A. less
B. equally
C. inversely
D. more
Answers
A unique property of water because of its chemical structure is that it's A. less dense when it's a solid than when it's a liquid.
What is water?Water is an incredibly unique substance, and its physical properties are largely due to its chemical structure. Water is a polar molecule, meaning it has a positively charged end and a negatively charged end, which creates an attraction between molecules of water that is known as hydrogen bonding.
This hydrogen bonding is responsible for a number of the unique properties of water, one of which is its density. Water is less dense when it is a solid than when it is a liquid. This is counterintuitive to most substances, which are more dense when they are solid than when they are liquid. The explanation for this is that when water freezes, the hydrogen bonds between the molecules force them to move further apart, resulting in a decrease in density.
This is why ice floats on top of liquid water, and it is why bodies of water don’t freeze from the bottom up.
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3 ) find the electrical force between the two charges Q1=3mc ,Q2=-6mc when they are 0.3 m parted ?
find the amount of the force when Q1 is doubled ?
Answers
Answer:
F = 3.6 10⁶ N
Explanation:
The expression for the electric force is
F = \(k \ \frac{q_1 q_2}{r^2}\)
in this case it indicates that the charge q1 is doubled
q₁ = 2 3 10⁻³ C
q₁ = 6 10⁻³ C
let's reduce the magnitudes to the SI system
q₂ = 6 10⁻³ C
r = 0.3 m
let's calculate
F = 9 10⁹ 6 10⁻³ 6 10⁻³ / 0.3²
F = 3.6 10⁶ N
Question 12 of 20
In which scenario will the two objects have the least gravitational force
between them?
O A. Mass of object 1 = 15 kg
Mass of object 2 = 12 kg
Distance between objects = 1.5 m
O B. Mass of object 1 = 15 kg
Mass of object 2 = 12 kg
Distance between objects = 0.5 m
C. Mass of object 1 = 12 kg
Mass of object 2 = 12 kg
Distance between objects = 1.5 m
D. Mass of object 1 = 12 kg
Mass of object 2 = 12 kg
Distance between objects = 0.5 m
Answers
Answer:
C. Mass of object 1 = 12 kg
Mass of object 2 = 12 kg
Distance between objects = 1.5 m
Explanation:
From the universal gravitation equation
Force of gravity between two objects is directly proportional to the product of mass 1 and mass 2 and inversely proportional to the square of the distance apart
Option B is has the greatest factor
Force of gravity between the objects = (15 x 12)/(0.5)^2
Force of gravity between the objects = 720G
Option C has the least factor and the answer
Force of gravity between the objects = (12 x 12)/(1.5)^2
Force of gravity between the objects = 64G
G = The constant of proportionality = 6.673 x 10-11 N m^2/kg^2
A set of electric trains are powered by a 9 V battery. What is the resistance of the trains if they draw 4.0 A of current?
Answers
Answer:
2.25 Ω
Explanation:
Standard equation
V = IR re-arrange to
V /I = R then sub in the values given
9 / 4 = 2.25 Ω
Help! Help!
Alcohol abuse has...
A. only physiological aspects.
B. only psychological aspects.
C. physiological and psychological aspects.
Answers
Answer
I feel the answer is C because it could cause mental and physical trauma
Explanation: