My Exit Ticket
The color of the Sun is more orange and red at sunrise and sunset and more yellow at noon. What is the main
factor that causes the change in color?
the scattering of short wavelengths as light
passes through the atmosphere
the change in the amount of the sunlight's
energy
the chabge in density in the atmosphere
the change in temperature in the
atmosphere
Windows
< Check My
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Answers
Answer:
the scattering of short wavelengths as light
passes through the atmosphere
Related Questions
While running, how should you throw a ball with respect to you so that you can catch it yourself? a) Slightly forward b) Slightly backward c) Straight up
Answers
C) Straight up
How will you catch the ball ?If the ball is thrown vertically up, only the horizontal component of the runner and the ball will be the same, and in that case only he may catch the ball. To catch the ball, the horizontal component of the force on the ball and the runner should be the same.
The horizontal velocity component (vx) describes the influence of the velocity in displacing the projectile horizontally. The vertical velocity component (vy) describes the influence of the velocity in displacing the projectile vertically.
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A 725 kg car that is moving with 14 m/s hit a truck of mass 2750 kg moving at 17 m/s in the opposite direction.
What is the velocity of the car after impact if the car and truck lock together?
PLEASE HELP ASAP
Answers
Answer:
16.4 m/s
Explanation:
725*14+2750*17=
10150+46750=56900
56900=(725+2750)*v ==> v, velocity, is what we're solving for
56900=3475v
56900/3475=3475v/3475
v=16.374 m/s
v=16.4 m/s
A 0.1 kg toy train car moving at 1.0 m/s runs into a stationary car with a mass of 0.15 kg. At what speed do they move off together?
Answers
The toy train and the car move off together at speed of 0.4 m/s.
What is law of conservation of momentum?
According to the law of momentum conservation, momentum is only modified by the action of forces as they are outlined by Newton's equations of motion; momentum is never created nor destroyed inside a problem domain.
From conservation of momentum, we get:
Total initial momentum = total final momentum
0.1 kg × 1.0 m/s + 0.15 kg × 0 m/s = ( 0.1 kg + 0.15 kg) × v
v = (0.1/0.25) × 1.0 m/s
v = 0.4 m/s.
Hence, they move off together at speed of 0.4 m/s.
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Which object reflects light with the longest wavelength
Answers
The longest wavelength are gamma rays.
Which object has longest wavelength?The strongest, shortest, and most powerful rays are known as gamma rays. The lowest energy, longest wavelengths, and lowest frequencies of any sort of EM radiation are found in radio waves, on the other hand.The shortest wavelength is found in gamma rays. The numerous forms of radiation and their associated wavelengths are displayed in the table below. various radiation types WavelengthRadio waves 20 cm
Infrared waves
0.3 mm - 20 cm
Infrared waves
800 nm - 0.3 mm
400 to 800 nm of visible light
X-rays 3 pm–300 pm, ultraviolet radiation 300 pm–400 nm
Gamma rays 3 pm.
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the pressure exerted by a phonograph needle on a record is surprisingly large, due to the very small width of the needle. if the equivalent of 0.95 g is supported by a needle, the tip of which is a circle 0.175 mm in radius, what pressure is exerted on the record, in pascals?
Answers
The pressure exerted on the record by the phonograph needle is approximately 970,367.48 pascals.
To calculate the pressure exerted on the record, we can use the formula:
Pressure = Force / Area
First, we need to calculate the force exerted by the needle. We know that the equivalent of 0.95 g is supported by the needle, so we can use the formula:
Force = mass x gravity
where mass is in kilograms and gravity is approximately 9.81 m/s². Converting 0.95 g to kilograms, we get:
0.95 g = 0.00095 kg
Therefore, the force exerted by the needle is:
Force = 0.00095 kg x 9.81 m/s² = 0.0093395 N
Next, we need to calculate the area of the needle tip. Since the tip of the needle is a circle, we can use the formula:
Area = π x radius²
where π is approximately 3.14. Substituting the values we have, we get:
Area = 3.14 x (0.175 mm)² = 0.00961925 mm²
However, we need to convert this to square meters to use in the pressure formula. Since 1 mm² = 10⁻⁶ m², we get:
Area = 0.00961925 mm² x (10⁻⁶ m²/mm²) = 9.61925 x 10⁻⁹ m²
Now we can substitute the values we have into the pressure formula:
Pressure = Force / Area = 0.0093395 N / 9.61925 x 10⁻⁹ m²
Simplifying, we get:
Pressure = 970,367.48 Pa
Therefore, the pressure exerted on the record by the phonograph needle is approximately 970,367.48 pascals.
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Please answer correctly.
Will give the brainliest!
Urgent!!!
Answers
Answer:
A. Piccolo
B. The flute would usually have the highest pitch, but because the piccolo is half the size of a flute, it's higher pitched. The piccolo in C has a range from D5 – C8 which is pretty high pitched. This means that the piccolo's range is an octave above that of the flute.
C. The human ear naturally picks out higher notes, so when piccolos play extremely high, we can hear them more easily than the other instruments in a band or orchestra.
D. I'm sorry but I don't know this one.
ater is added to liquid isopropanol (a polar liquid) to form a solution of rubbing alcohol. describe what happens on the molecular level as the water dissolves in the isopropanol. select the correct step order from the drop-down menu for each step listed. the polar isopropanol molecules are attracted to the polar water molecules at the surface of the water. 1 the water molecules spread evenly throughout the solution. 2 the water molecules are carried into the solution. 1 the isopropanol molecules surround the water molecules
Answers
The correct step order for the molecular level description of water dissolving in isopropanol is as follows:
The polar isopropanol molecules surround the water molecules.
The water molecules are carried into the solution.
The water molecules spread evenly throughout the solution.
How does water dissolve in isopropanol at the molecular level?When water is added to liquid isopropanol to form a solution of rubbing alcohol, several molecular-level processes occur. Initially, the polar nature of isopropanol, characterized by its oxygen atom and hydroxyl group, leads to an attraction between the isopropanol molecules and the polar water molecules at the surface of the water.
As the interaction between the polar molecules takes place, the isopropanol molecules surround the water molecules.
This phenomenon occurs due to the attractive forces between the polar ends of the isopropanol and water molecules, resulting in the formation of hydration shells around the water molecules.
The hydration shells essentially involve the orientation of isopropanol molecules around the water molecules, stabilizing their presence within the solution.
Next, the isopropanol molecules carrying the water molecules are dispersed throughout the solution.
This dispersion occurs through the random motion of the molecules, allowing the water molecules to become incorporated into the isopropanol solution.
As more water molecules are introduced, they continue to spread evenly throughout the solution, becoming uniformly mixed with the isopropanol molecules. This process leads to a homogeneous solution where the isopropanol and water molecules are thoroughly intermixed.
Overall, the addition of water to isopropanol results in the formation of a solution where the water molecules are surrounded by the isopropanol molecules, leading to a well-dispersed mixture at the molecular level.
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What is reflection of light with example?
Answers
Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated.
For light, reflection occurs when light rays hit a surface and bounce back into the same medium. Reflection is the basis of how we see objects, as light reflected off of objects enters our eyes and allows us to see them.
An example of reflection is when light rays from the sun hit a calm body of water, like a lake, and reflect back up towards the sky. This creates a reflection of the sky and the surrounding environment on the surface of the water. Similarly, when light hits a smooth and flat mirror, it reflects off the mirror and produces an image. This is known as a specular reflection.
Reflection also occurs at rough or irregular surfaces, like a wall painted with a matte finish. In these cases, the light rays reflect in many different directions, producing a diffuse reflection.
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How much would a pair of 0.5 kg shoes weigh on Earth? (Include units in
your answer) *
Answers
Answer:
1.1 lbs
Explanation:
To convert kg to lbs you multiply kilograms by 2.2. So 0.5kg × 2.2 equals to 1.1 lbs
Atom A and Atom B have the same number of protons and neutrons, but they do not have the same number of electrons.
Which statement describes the atoms?
The atoms have the same chemical symbol.
The atoms have the same charge.
The atoms have different atomic numbers.
The atoms have different atomic masses.
Answers
Answer:
The answer is C- the atoms have different. A. Topic numbers
Explanation:
if they have the same neutrons and protons but not electrons the atomic numbers cant be the same if they dont have all 3 of the same numbers.
(on edge 2020-2021)
The atoms have different atomic numbers.
The atomic number of an atom is equal to the number of protons in its nucleus. Since Atom A and Atom B have the same number of protons and neutrons, they have the same atomic mass, which is the sum of protons and neutrons in the nucleus.
However, the number of electrons in an atom can vary. An atom is electrically neutral, which means it has the same number of protons and electrons. If Atom A and Atom B have different numbers of electrons, they will have different charges. One atom may have gained or lost electrons, making it either negatively charged (anion) or positively charged (cation), while the other remains neutral.
The chemical symbol of an element represents the identity of the element, and it is determined by the number of protons in the nucleus, which is the atomic number. Since the atoms have different atomic numbers, they will have different chemical symbols.
Therefore, the correct statement is that the atoms have different atomic numbers, as their atomic numbers determine their chemical identity.
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what is electricity?write any two defects of a simple cell.
Answers
Answer:
Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations.
If a truck weighs 195,000N what is the mass of the truck
Answers
Answer:
19500kg
Explanation:
If you divide 195000N by 10
The big five personality trait affects people negatively if they have to much of it? Which trait is it?
Answers
The term personality traits has to do with the essentials of a person. One of the five big personality trait that affects people negatively if they have to much of it is neuroticism.
Personality traitsThe term personality traits refers to those traits that characterize an individual. They have the capacity to affect a person positively or negatively.
One of the five big personality trait that affects people negatively if they have to much of it is neuroticism.
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WH
Two forces are applied to a 3.0kg block on a
frictionless horizontal surface, as shown in the
diagram below
F1=25N
F2=ION
The apoeleration of the block 15
5.0 m/s2 to the left
2.0 m/s2 to the right
O 5.0 m/s2 to the left
6.0 m/s2 to the right
Answers
a certain jet is capable of a steady 20 degree climb. how much altitude does the jet gain when it moves 1 km through the air
Answers
The jet gains approximately 342 meters in altitude when it moves 1 km through the air at a steady 20-degree climb.
To determine the altitude gained by the jet when it moves 1 km through the air, we need to calculate the vertical displacement using trigonometry.
Given that the jet climbs at a steady 20 degrees, we can use the sine function to find the vertical displacement.
Vertical displacement = Distance * sin(angle)
In this case, the distance is 1 km (1000 m), and the angle is 20 degrees.
Vertical displacement = 1000 m * sin(20 degrees)
Using a calculator, we find that sin(20 degrees) is approximately 0.342.
Vertical displacement ≈ 1000 m * 0.342 ≈ 342 m
Therefore, the jet gains approximately 342 meters in altitude when it moves 1 km through the air at a steady 20-degree climb.
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the triceps muscle in the back of the upper arm extends the forearm. this muscle in a professional boxer exerts a force of 1975 n with an effective perpendicular lever arm of 2.50 cm , producing an angular acceleration of the forearm of 115.0 rad / s2 . what is the moment of inertia of the boxer's forearm?
Answers
The moment inertia of the boxer's forearm is 0.43 kgm².
We need to know about torque to solve this problem. Torque is the rotational equivalent of linear force. It can be determined as
τ = F x r
where τ is torque, F is perpendicular force and r is radius.
Torque also depends on the moment inertia
τ = I . α
where I is inertia and α is angular acceleration.
From the question above, the given parameters are
F = 1975 N
r = 2.5 cm = 0.025 m
α = 115 rad/s²
Substitute the first equation with the second equation and we can calculate the inertia of the boxer's forearm
τ = τ
F x r = I . α
1975 . 0.025 = I . 115
I = 0.43 kgm²
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Lisette decided to take this game more seriously and put both hands on the rope, applying a 150 N force to the left. Alexis still struggled with her 100 N force to the right.
Answers
Answer:
orce or acceleration b. Ms. Sunderland finally decided to take this seriously and put both hands on the rope and applied a 1000 N force to the left, while Jared and James still struggled with their 300 N force to the right. What is ... 150 more force. 10. During 5th period Dylan resisted the forces applied by her classmates in a ...
Explanation:
Saturn’s bright rings are located within the roche limit of saturn. This supports the theory that these rings:.
Answers
This supports the theory that these rings are formed from moons torn apart by tidal stress.
Write about planet saturn?After Jupiter, the second-largest planet in the Solar System is Saturn. It's a giant planet with a radius around nine and a half times that of the Earth.
Saturn is only one-eighth the average density of Earth, yet it is 95 times more massive due to its bigger volume.
Saturn’s bright rings are located within the Roche limit of Saturn. This supports the theory that these rings are formed from moons torn apart by tidal stress.
Hence this supports the theory that these rings are formed from moons torn apart by tidal stress.
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The mass of a neutron star is about the same as that of the Sun. Group of answer choices True False
Answers
The mass of a neutron star is about the same as that of the Sun is a false statement.
What is a neutron star?
A neutron star is a kind of stellar remnant made mostly of closely packed neutrons. They are formed after the explosion of a star in a supernova. These stars are the collapsed core leftovers after a massive star exhausts its fuel supply and goes supernova.Because they are so dense, neutron stars have strong gravitational fields that have an impact on their surroundings.What is the mass of a neutron star?
The mass of a neutron star is in the range of 1.4 to 2.1 solar masses, which is roughly equivalent to the mass of the sun. Neutron stars, on the other hand, are only a few kilometers in diameter, making them incredibly dense and heavy.This statement is hence false: The mass of a neutron star is about the same as that of the Sun.
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diffusion rate is directly proportional to (select all that apply) group of answer choices distance surface area 1/distance2 concentration gradient of the gas
Answers
The diffusion rate is directly proportional to the concentration gradient of the gas, distance, and surface area. Therefore, the correct options are distance, surface area, and concentration gradient of the gas.
Diffusion is the process by which particles move from an area of higher concentration to an area of lower concentration. The rate of diffusion depends on several factors, including the concentration gradient, distance, and surface area.
The concentration gradient of the gas refers to the difference in concentration between two regions. The greater the concentration gradient, the faster the diffusion rate.
This is because a larger difference in concentration provides a stronger driving force for particles to move from an area of higher concentration to an area of lower concentration.Distance also plays a role in diffusion rate.
The greater the distance between the two regions, slower the diffusion rate. This is because particles have to travel a longer distance to reach the region of lower concentration. Surface area is another important factor. An increased surface area facilitates a higher diffusion rate.
This is because a larger surface area allows for more particles to come into contact with the interface between the two regions, increasing the chances of diffusion.
In summary, the diffusion rate is directly proportional to the concentration gradient of the gas, distance, and surface area. A larger concentration gradient, shorter distance, and larger surface area will result in a faster diffusion rate. Therefore, the correct options are distance, surface area, and concentration gradient of the gas.
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The vertical and horizontal ditance of the projectile will be equal if the angel of the progectile i
Answers
The vertical and horizontal distance of a projectile will be equal if the angle of projection is 45 degrees.
What angle the range of projectile equal?Any two angles with a 2:1 ratio when launched at the same speed will have the same range.This is due to the fact that the projectile will be equally influenced by the horizontal and vertical components of its velocity at a 45 degree angle. Consequently, the missile will cover the same amount of ground horizontally as it does vertically.The projectile will be more affected by either the horizontal or vertical component of its velocity for different projection angles, depending on the angle. The projectile will be predominantly impacted by the vertical component of its motion at an angle of 90 degrees (straight up), while the horizontal component of its motion will be most influential at an angle of 0 degrees (horizontal).To learn more about angle the range of projectile equal refers to:
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What do all muscles have a store of, which is used for fuel?
O A. Oxygen
O B. Protein
O c. Carbohydrates
O D. Glycogen
Answers
Answer:
D. Glycogen
Explanation:
the major fuels for muscle are glucose fatty acids, and ketone bodies. muscle differs from the brain in having a large store of glycogen
Answer:
D. Glycogen
Explanation:
About 3/4 of all the glycogen in the body is stored in muscle.
The rotational inertia of a pencil is greatest about an axis
a)about its end, like a pendulum.
b)about its midpoint, like a propeller.
c)along its length, where the lead is.
Answers
The rotational inertia of a pencil is greatest about an axis about its midpoint, like a propeller, option B.
What is a rotational inertia?""Rotational inertia," also known as "moment of inertia." Rotational inertia is a measure of an object's resistance to changes in its rotational motion, and is defined as the sum of the products of the masses of each particle composing an object and the square of their distances from a chosen axis of rotation.
The larger an object's rotational inertia, the harder it is to get it rotating, or to change its rotational speed.
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A capacitor is discharged through a 20.0 Ω resistor. The discharge current decreases to 22.0% of its initial value in 1.50 ms.
What is the time constant (in ms) of the RC circuit?
a) 0.33 ms
b) 0.67 ms
c) 1.50 ms
d) 3.75 ms
Answers
The time constant (in ms) of the RC circuit is 3.75 ms. Hence, the correct option is (d) 3.75 ms.
The rate of decay of the current in a charging capacitor is proportional to the current in the circuit at that time. Therefore, it takes longer for a larger current to decay than for a smaller current to decay in a charging capacitor.A capacitor is discharged through a 20.0 Ω resistor.
The discharge current decreases to 22.0% of its initial value in 1.50 ms. We can obtain the time constant of the RC circuit using the following formula:$$I=I_{o} e^{-t / \tau}$$Where, I = instantaneous current Io = initial current t = time constant R = resistance of the circuit C = capacitance of the circuit
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The time constant of the RC circuit is approximately 0.674 m s.
To determine the time constant (τ) of an RC circuit, we can use the formula:
τ = RC
Given that the discharge current decreases to 22.0% of its initial value in 1.50 m s, we can calculate the time constant as follows:
The percentage of the initial current remaining after time t is given by the equation:
I(t) =\(I_oe^{(-t/\tau)\)
Where:
I(t) = current at time t
I₀ = initial current
e = Euler's number (approximately 2.71828)
t = time
τ = time constant
We are given that the discharge current decreases to 22.0% of its initial value. Therefore, we can set up the following equation:
0.22 =\(e^{(-1.50/\tau)\)
To solve for τ, we can take the natural logarithm (ln) of both sides:
ln(0.22) = \(\frac{-1.50}{\tau}\)
Rearranging the equation to solve for τ:
τ = \(\frac{-1.50 }{ ln(0.22)}\)
Calculating this expression:
τ ≈ 0.674 m s
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what is the answer of 1+8
Answers
Answer:
9
Explanation:
Say you had 1 apple, if someone gives you another 8 apples you would have 9 apples total.
Answer:
9
Explanation:
9 is 1 higher than 8, so 8+1 equals 9
Which is the best estimate for the mass of a typical lineman on a high school football team
1. 100,000 g
2. 100,000 kg
3. 100,000 mg
Answers
We have that the best estimate for the mass of a typical lineman on a high school football team is
\(100,000 g=100kg\)
From the options
1. 100,000 g
2. 100,000 kg
3. 100,000 mg
Generally
A Typical lineman cannot be as small as
\(100000mg=0.1kg=100g\)
A Typical linesman cannot be as massive as
\(100,000kg\) as that is unrealistic
With the Average Mass of A Typical linesman can be
\(100,000 g=100kg\)
In conclusion
The best estimate for the mass of a typical lineman on a high school football team is
\(100,000 g=100kg\)
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4.
Which wave diffracts the most when encountering an obstacle?
O a surface wave
O a wave with the longest wavelength
O a longitudinal wave
O a wave with the highest amplitude
Answers
Answer:
Answer is a wave with the longest wavelength.
Explanation:
I hope it's helpful!
4
12. The term, bullet, is often incorrectly applied to the:
a. primer, which includes primer powder, gunpowder, the bullet, and the
casing material that holds them all together.
b. cartridge, which includes primer powder, gunpowder, the bullet, and the
casing material that holds them all together.
c. anvil, which includes primer powder, gunpowder, the bullet, and the casing
material that holds them all together.
d. headstamp, which includes primer powder, gunpowder, the bullet, and the
casing material that holds them all together.
Answers
Answer:
B. Cartridge, which includes primer powder, gunpowder, the bullet, and the
casing material that holds them all together.
Explanation:
It is right trust me.
What amount of unbalanced force will cause a 45 kg object to accelerate at a rate of 3.0 m/s2
Answers
Answer:
135N will cause a 45 kg object to accelerate at a rate of 3.0 m/s2
Explanation:
Force = mass * acceleration
Force = 45 kg * 3 m/s2
Force = 135N
Force=F
Apply Newton's second law
\(\\ \tt\longmapsto F=ma\)
\(\\ \tt\longmapsto F=45(3)\)
\(\\ \tt\longmapsto F=135N\)
Choose whether the statements below are true or false
Answers
Answer:
1. false 2.true 3. true
Explanation:
there was more scientific method and more ways to solve
the hypothesis show the experiment design