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Related Questions
This model shows an example of a fog bank formation. This can happen in the Great Lakes area as warm summer air moves across the water and cools down quickly. Which statement explains how this happens?
A) The cooled air becomes warm again after passing over the lake.
B) The moisture in the cooled air condenses, forming a thick fog.
C) The cooled air forms thick snow clouds that resemble dense fog.
D) The air surrounding the lake rises, making clouds break into fog.
Answers
Fog bank formation occurs when the moisture in the cooled air condenses, forming a thick fog.
How Fog banks formed?Fog banks form at sea where cool air moves quickly over the surface of the ocean that is warm. The cool incoming air lowers the temperature of the air just above the water surface and water vapor condenses into fog.
So we can conclude that Fog bank formation occurs when the moisture in the cooled air condenses, forming a thick fog.
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The first P-wave of an earthquake travels 5600 kilometers from the epicenter and arrives at a seismic station at 10:05 a.m. At what time did this earthquake occur?
Ahhhhhh I have a Regent's test in 2 hours and I don't know how to solve this type of question! Any help would be appreciated.
Anyone know what the steps to do this are? I dont even need an answer, just how to get to it. Thank you!
Answers
The earthquake would occur 13 minutes before 10:05 a.m. which will be at 9.52 am.
The p-waves travel with a constant velocity of 7 km/s
The time can be calculated by using the formula
t = d / v
where
T1 = 10:05 a.m
d is the distance they take to travel from the epicenter
v is the speed of the p-waves
On average, the speed of p-waves is
v = 7 km/s
d = 5600 km (given)
Substituting the values in the formula;
t = d / v
t = 5600 ÷ 7
t = 800 seconds
Converting into minutes,
t = 800 ÷ 60
t = 13.3
≈ 13 mins
T1 - 13 mins = T2
10:05 - 13 mins = 9.52 am
It means the earthquake occurred prior 13 minutes, that is at 9.52 am.
Therefore, the earthquake occurred at 9.52 am.
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in solid conductors, what is responsible for the flow of electrical current??
Answers
Answer:
Ussually, soft metals. or solid objects that allow the flow of eletrons.
Explanation:
Electric Current is the flow of electrons through a wire or solution. In a solid the electrons are passed from one positively charged metallic atom to next but in solution the electron is carried by the ions present in the solution. A solution capable of carrying charge is called an electrolyte.
In solid conductors, electron mobility is responsible for the flow of electrical current.
Electron mobility is principally responsible for the flow of electrical current in solid conductors. The subatomic particles known as electrons orbit the atomic nuclei of atoms and are negatively charged. The outermost energy levels of the atoms in a solid conductor, such as a metal like copper or aluminum, have numerous free or loosely bound electrons.
The conductor experiences an electric field that pulls on the free electrons when an electric potential difference (voltage) across its ends is applied (for example, by connecting it to a battery or power source). The electrons are propelled by this force toward the direction of the electric field.
Hence, in solid conductors, electron mobility is responsible for the flow of electrical current.
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. A 5cm tall object is placed perpendicular to the principal axis of a convex lens of focal
length 10 cm. The distance of the object from the lens is 15 cm. Find the nature, position
and size of the image. Also find its magnification
Answers
The nature of the image formed by the convex lens is virtual, the position of the image is 30 cm away from the lens on the same side as the object, and the size of the image is twice the size of the object. The magnification is 2, meaning the image is magnified.
Given:
Object height (h) = 5 cm
Focal length of the convex lens (f) = 10 cm
Object distance (u) = 15 cm (positive since it's on the same side as the incident light)
To determine the nature, position, and size of the image, we can use the lens formula:
1/f = 1/v - 1/u
Substituting the given values:
1/10 = 1/v - 1/15
To simplify the equation, we find the common denominator:
3v - 2v = 2v/3
Simplifying further:
v = 30 cm
The image distance (v) is 30 cm. Since the image distance is positive, the image is formed on the opposite side of the lens from the object.
To find the magnification (M), we use the formula:
M = -v/u
Substituting the values:
M = -30 / 15 = -2
The magnification is -2, indicating that the image is inverted and twice the size of the object.
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An iceberg of density 920kg/m^3 floats in seawater of density 1025kg/m^3 with volume of 10^6m^3.What is the total mass of the iceberg?
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An 8.5 kg bowling ball initially at rest is dropped from the top of a building. The ball hits the ground with an acceleration of 9.8 m/s2. Find the net force on the falling ball.
Answers
Answer:
The answer is 83.3 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × accelerationFrom the question we have
force = 8.5 × 9.8
We have the final answer as
83.3 NHope this helps you
Determine the angular momentum of a 74- g particle about the origin of coordinates when the particle is at x = 4.3 m , y = -5.5 m , and it has velocity υ=(3.1i^−8.1k^)m/s .
Find the x -component.
Find the y -component.
Find the z -component.
Answers
The x -component of the angular momentum of the particle is 0.99 kgm²/s.
The y -component of the angular momentum of the particle is 3.3 kgm²/s.
The z -component of the angular momentum of the particle is 0.
What is angular momentum?
Angular momentum is the property of any rotating object given by moment of inertia times angular velocity.
Mathematically, the formula for angular momentum is given as;
L = mvr
where;
m is the mass of the objectv is the velocity of the objectr is the radius of the objectThe given parameters include the following;
the velocity of the particle = ( 3.1i - 8.1 k) m/s
the mass of the particle = 74 g = 0.074 kg
the displacement of the particle, x = 4.3 m, y = - 5.5 m
The x -component of the angular momentum of the particle is calculated as;
Lx = 0.074 x 3.1 x 4.3
Lx = 0.99 kgm²/s
The y -component of the angular momentum of the particle is calculated as;
Ly = 0.074 x ( -8.1) x (-5.5)
Ly = 3.3 kgm²/s
The z-component of the angular momentum of the particle is calculated as;
Lz = 0.074 x ( 0 ) x (0)
Lz = 0
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A bowling ball of mas 6.0 kg is released from rest
Answers
Answer:
could u give a more longer understanding
Physics. All the answers I get are wrong. Need help
Answers
The torque is given by:
\(\tau=I\alpha\)where I is the moment of inertia of the disk and alpha is the angular acceleration.
The moment of inertia for a disk is given by:
\(I=\frac{1}{2}mr^2\)where m is the mass and r is the radius. The angular acceleration can be obtained from the relation:
\(\alpha=\frac{\omega^2_f-\omega^2_i}{2\theta}\)In this case the mass is 0.240 kg and the radius is 15.25 cm or 0.1525 meters. Furthermore, the initial angular velocity is zero, the final angular velocity is 3.49 rad/s and the angle it takes to reach it is 1.2 by 2pi. Plugging this in the equation for the torque we have:
\(\begin{gathered} \tau=(\frac{0.240\cdot0.1525^2}{2})(\frac{3.49^2-0^2}{2(1.2\cdot2\pi)}) \\ \tau=2.0663\times10^{-3} \end{gathered}\)Therefore the torque the motor must deliver is:
\(2.0663\times10^{-3}\text{ Nm}\)Question 9 of 10
In the engineering design process, what do engineers do immediately after
testing a prototype?
A. Communicate the solution.
B. Brainstorm multiple solutions.
C. Iterate to improve the solution.
D. Select one solution.
SUBMIT
Kk
Answers
Answer:
Answer the first 2 answers was incorrect
Three capacitors C1 = 10.4 µF, C2 = 20.0 µF, and C3 = 29.5 µF are connected in series. To avoid breakdown of the capacitors, the maximum potential difference to which any of them can be individually charged is 125 V. Determine the maximum potential difference across the series combination.
Answers
Answer:
66.75 V
Explanation:
A capacitor is a device that stores electrical energy in an electric field. It is made up of two conductor plates separated by a dielectric. It stores electrical charges which then produces a potential difference between the plates.
The equivalent capacitance for capacitors in series is given as:
\(\frac{1}{C_{eq}}=\frac{1}{C_1} +\frac{1}{C_2}+\frac{1}{C_3} \\ \\\frac{1}{C_{eq}}=\frac{1}{10.4} +\frac{1}{20}+\frac{1}{29.5}\\ \\C_{eq}=5.55\ \mu F\)
\(The\ total\ charge\ stored(Q)\ is:\\\\Q=C_{eq}V\\\\Q=5.55*10^{-6}F*125\ V=694 \mu C\)
The potential difference on each capacitor is:
\(V_1=\frac{Q}{C_1}=\frac{694\mu C}{10.4\mu F} =66.75\ V\\\\V_2=\frac{Q}{C_2}=\frac{694\mu C}{20\mu F} =34.71\ V\\\\V_3=\frac{Q}{C_3}=\frac{694\mu C}{29.5\mu F} =23.53\ V\)
The maximum potential difference is 66.75 V across the small capacitor
In hiking, what fitness component is required of you
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Please help me with the following problem.
Answers
The equivalent of what mathematicians refer to as a self-adjoint operator in physics is a Hermitian operator.
What are some examples of the Hermitian operator? Mathematicians refer to an object as a self-adjoint operator; this is the physicist's equivalent.This vector space V's linear operator has a positive definite inner product.Following Dirac, the conventional notation for an inner product in physics is a bra and ket.A function f(x) could, for instance, be multiplied by x using the operator x.A is a Hermitian operator2 if we assume that f(x)=2x + 3 and xf(x)=2x2 + 3x satisfy the condition that d is across all space.The equivalent of what mathematicians refer to as a self-adjoint operator in physics is a Hermitian operator.The fundamentals of quantum physics are two properties of hermitian operators.To learn more about Hermitian operator refer
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A projectile is fired straight up with an initial velocity of 40.0 m/s . Approximately how high will the projectile ?
Answers
Answer:
it depends on the wind and any other conditions but if you have a controlled environment it should take 1 second to get 40 meters but it could go higher in which it could take about 5 seconds to go 200 meters
Explanation:
hope it helped
:)
7. What do the following scientists study:
a. Geologists -
b. Zoologists -
c. Anthropologists -
d. Botanists -
e. Chemists -
f. Physicists -
on line papper
Answers
These scientists are known to study different aspects of science. The study they engage are;
What do scientists studya. Geologists - study the physical structure and composition of the Earth, including rocks, minerals, and natural resources.
b. Zoologists - study animals, their behavior, physiology, evolution, and distribution.
c. Anthropologists - study human societies, cultures, and behavior across time and space.
d. Botanists - study plants, their physiology, structure, ecology, and evolution.
e. Chemists - study the composition, properties, and behavior of matter and the chemical changes it undergoes.
f. Physicists - study the fundamental principles that govern the behavior of matter and energy in the universe, including mechanics, thermodynamics, electromagnetism, quantum mechanics, and relativity.
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Which of the following would you expect to be a strong electrolyte in solution?
Answers
The following would expect to be a strong electrolyte in solution (b) KCI is correct option.
When dissolved in water, a strong electrolyte produces a large concentration of ions in solution by totally dissociating into ions. The following compounds are typically strong electrolytes in solution according to this definition:
Al(OH)₃ (aluminum hydroxide) is a weak electrolyte. It does not dissociate significantly into ions in solution, resulting in a low electrical conductivity.KCl (potassium chloride) is a strong electrolyte. It completely dissociates into potassium ions (K⁺) and chloride ions (Cl⁻) in solution, resulting in a high concentration of ions and a high electrical conductivity.PbI₂ (lead(II) iodide) is a weak electrolyte. It does not dissociate significantly into ions in solution, resulting in a low electrical conductivity.These substances readily dissociate into ions in water and exhibit high electrical conductivity, making them strong electrolytes in solution.
Therefore, the correct option is (b).
The complete question is,
Which of the following would be a strong electrolyte in solution?
a) Al(OH)₃ b) KCI c) Pbl₂
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he electric field is dependent on the distance between the plates. false: The voltage of a connected charged capacitor decreases when the plate area is increased. false: The voltage of a disconnected charged capacitor increases when the plates are brought closer together.
Answers
Answer:
False.
Explanation:
The voltage of a disconnected charged capacitor decreases when the plates are brought closer together because the capacitance is inversely proportional to the area. If the area between plates decreases, its capacitance increases and vice versa. There is direct relationship between voltage of a disconnected charged capacitor and plates. If the distance between plates decreases, the voltage of a disconnected charged capacitor is also decreases while on the other hand, if the distance between plates increases, the voltage of a disconnected charged capacitor is also increases.
Please help me! I don’t understand these types of problems.
Answers
Answer:
60 m
Explanation:
also if u ever get stuck just look up displacment caculator it can help . Please give me brainlist
Can you help? It give a example and I need help seeing what type of boundary it is.
Answers
Answer:
Explanation:
4. Convergent boundary- when two plates move closer together.
5. Divergent boundary- when two plates move apart
6. Transform boundary- when two plates move past each other
27. Raven is a geologist. She is measuring something called the porosity of a rock. The actual porosity of the rock sample is 0.114. Raven measures the porosity as 0.120. What is Raven's percent error on this
measurement?
0.0526%
0.006%
0.600%
5.26%
Answers
Raven's percentage error of the measurement is 5.26%
Formula for percentage errorPercentage error = (absolute error / standard measurement) × 100
How to determine the percentage error on the measurementThe pecenrage error of the measurement can be obtained as illustrated below:
Standard measurement = 0.114Measured value = 0.120Absolute error = 0.120 - 0.114 = 0.006Percentrage error =?Percentage error = (absolute error / standard measurement) × 100
Percentage error = (0.006 / 0.114) × 100
Percentage error = 5.26%
Thus, the perecentage error of Raven's measurement is 5.26%
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Answer:
I think the answer is 5.26%
but please let me know if I was wrong.
5.26% is the answer I got
Explanation:
An object is placed at several different distances to the left of the lenses and mirrors (focal length = f). For each case, draw the 3 principal rays to locate the image and then (S.A.L.T.) [Size, Attitude, Location, Type] the image.
Answers
To determine the image characteristics using the 3 principal rays and SALTS (Size, Attitude, Location, Type), we'll consider both lenses and mirrors separately. Here's how you can analyze each case:
Lenses:
Place an object at different distances to the left of a lens with a focal length (f).
a) Object placed beyond 2f:
In this case, the object is placed far beyond twice the focal length of the lens.
Principal ray 1: A ray parallel to the principal axis will pass through the focal point on the opposite side.
Principal ray 2: A ray passing through the optical center will continue in a straight line without any deviation.
Principal ray 3: A ray passing through the focal point on the object side will emerge parallel to the principal axis.
The image will be formed on the opposite side of the lens, between the focal point and twice the focal length.
SALTS:
Size: The image will be smaller than the object.
Attitude: The image will be inverted.
Location: The image will be located between the focal point and twice the focal length.
Type: The image will be real.
b) Object placed at 2f:
In this case, the object is placed at twice the focal length of the lens.
Principal ray 1: A ray parallel to the principal axis will pass through the focal point on the opposite side.
Principal ray 2: A ray passing through the optical center will continue in a straight line without any deviation.
Principal ray 3: A ray passing through the focal point on the object side will emerge parallel to the principal axis.
The image will be formed on the opposite side of the lens at twice the focal length.
SALTS:
Size: The image will be the same size as the object.
Attitude: The image will be inverted.
Location: The image will be located at twice the focal length.
Type: The image will be real.
c) Object placed between f and 2f:
In this case, the object is placed between the focal point and twice the focal length of the lens.
In this case, the object is placed far beyond twice the focal length of the mirror.
Principal ray 1: A ray parallel to the principal axis will reflect through the focal point on the same side.
Principal ray 2: A ray passing through the focal point on the object side will reflect parallel to the principal axis.
Principal ray 3: A ray passing through the center of curvature will reflect back along the same path.
The image will be formed on the opposite side of the mirror, between the focal point and twice the focal length.
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Someone help me I’ll give brainliest
Answers
Answer:
2.83 m/s
Explanation:
you have the right answer
A spacecraft is in a circular orbit around the planet Mars at a height of 140km.
A small part of the spacecraft falls off and eventually lands on the surface of the Mars
The small part has a mass of 1.8kg
During its fall, the small part loses 0.932 MJ of gravitational potential energy.
Calculate the gravitational field strength of Mars
Answers
Answer:
3.79 m/s^2
Explanation:
We know the small part loses 0.932 MJ of gravitational potential energy during its fall.
Potential energy = mass x gravitational field strength x height
Re-arranging to solve for gravitational field strength:
g = Potential energy/(mass x height)
Plugging in the given values:
g = 0.932 MJ / (1.8kg x 140km)
= 0.932 x 10^6 J / (1.8 x 1000kg x 140 x 1000m)
= 3.79 m/s^2
Therefore, the gravitational field strength of Mars is calculated to be 3.79 m/s^2.
50 POINTS!!!
In the graph, which machine has the smallest mechanical advantage?
Answers
The mechanical advantage of an inclined plane increases with the length of the ramp, where we assume the height is constant. So, the correct option is D.
What is Mechanical advantage?Mechanical advantage is defined as the measure of force amplification achieved using a device, mechanical device, or machine system, where the device offsets input forces against movement to achieve a desired amplification in output force.
There are three types of mechanical advantage:
ForceDistance Speed.In the above given information, graph D has lowest inclined plane as compare to other graphs, so it has smallest mechanical advantage.
Therefore, the correct option is D.
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what change occurs to the gravitational force of attraction between two bodies when the distance between them is made half 1 by 2 by keeping masses constant
Answers
Explanation:
Since the gravitational force is inversely proportional to the square of distance, changing the distance to half the original results in 4 times the original force
All living creatures have some form of sleep that they engage in at regular periods, making sleep a(n) __________ function. A. environmental B. biological C. species-specific D. psychological
The answer is B. biological
Answers
Answer:
ans: a biological function
Answer:
B
Explanation:
EDGE2020
A person throws a ball from height of 6 feet with an initial
vertical velocity of 48 feet per second. Use the vertical motion
model, h = - - 16t2 + vt +s, where v is the initial velocity in
feet per second and s is the height in feet, to calculate the
amount of time the ball is in the air before it hits the ground
again. Round your answer to the nearest tenth if necessary.
time in air: _____ seconds
Answers
Answer:
3.1 s
Explanation:
use the quadratic formula
x = −b + √(b2 − 4ac)/2a
where a=-16 b=48 (the velocity) and c=6 (the height)
A hydrogen atom in an excited state absorbs a photon of wavelength 411 nm. What were the initial and final states of the hydrogen atom?
Answers
Answer:
The initial and final states of the hydrogen atom were n=2 and n=6 respectively.
Explanation:
We must first obtain the energy of the photon;
E= hc/λ
where;
h= Plank's constant = 6.6 * 10^-34 JS
c= speed of light = 3* 10^8 m/s
λ = wavelength of light= 411 nm = 411* 10^-9 m
Substituting values;
E = 6.6 * 10^-34 * 3* 10^8 / 411* 10^-9
E = 4.8 * 10^-19 J or 3.0 eV
But ;
En = 13.6/n^2
So E = En final - En initial
3.0 = -13.6(1/n^2final - 1/n^2initial)
If we substitute n^2final = 6 and n^2 initial = 2 then the RHS becomes approximately equal to the LHS
Therefore the initial and final states of the hydrogen atom were n=2 and n=6 respectively.
How does a team win in baseball?
A. Score the least amount of points by the end of the first inning
B. Score the most amount of points by the end of the first inning
C. Score the least amount of points by the end of the ninth inning
D. Score the most amount of points by the end of the ninth inning
Answers
Answer:
d
Explanation:
this is just common sense, why did you even need to ask?
A parachutist is falling with terminal velocity. Which of the following statement is not correct?
a) Gravitational potential energy is converted into kinetic energy of the air
b) G.P.E is converted into K.E of the parachutist
c) G.P.E is converted into thermal energy of the air
d) G.P.E is converted into thermal energy of the parachutist
Answers
Answer: D i think
Explanation: