Answer:
True
Explanation:
The color an object reflects is what we see. What an object absorbs is what we do not see.
Electromagnetic radiation consists of particles called ______, each of which has a discrete amount, or quantum, of energy. However, since electromagnetic radiation also has wave properties, each particle is also characterized by a specific ___________ (m) and frequency (s⁻¹).a. Photons, Wavelengthb. Energy, Waves.c. Wave, Mass.d. Decreases, Less.
If you think of electromagnetic radiation as a flow of massless particles called photons,
What is the name of the electromagnetic radiation subatomic particles, each of which has a specific quantity of energy termed a?An electromagnetic wave makes up a photon, a small particle. They are both massless and chargeless. They can be compared to a tiny bag of light energy. A quantum, or discrete packet of gas or matter, is an example.
Are photons a component of electromagnetic waves?a spectrum of electromagnetic waves. A stream of photons, each carrying energy and flowing at the speed of light, can be compared to electromagnetic radiation, as was stated in the handy guide on the electromagnetic spectrum.
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What conditions are necessary for a lunar or solar eclipse?
Both lunar and solar eclipses occur due to the alignment of the Sun, Moon, and Earth, but the specific conditions required for each type of eclipse are slightly different.
For a lunar eclipse to occur, three conditions are necessary:
Full Moon: A lunar eclipse can only occur during a Full Moon when the Moon is on the opposite side of the Earth from the Sun.
Alignment: The Earth, Moon, and Sun must be aligned in a straight line, with the Earth in the middle.
Angle: The Moon's orbit around the Earth is tilted at an angle of about 5 degrees to the Earth's orbit around the Sun. Therefore, for a lunar eclipse to occur, the Moon must pass through the Earth's shadow, which only happens when the alignment is just right.
For a solar eclipse to occur, three different conditions are necessary:
New Moon: A solar eclipse can only occur during a New Moon, when the Moon is between the Earth and the Sun.
Alignment: The Earth, Moon, and Sun must be aligned in a straight line, with the Moon in the middle.
Distance: The Moon's distance from the Earth can affect whether or not a solar eclipse occurs. The Moon's orbit around the Earth is elliptical, meaning that it is not always the same distance from Earth. If the Moon is too far away, it appears smaller in the sky and cannot completely block the Sun's disk, resulting in an annular solar eclipse. If the Moon is closer to the Earth, it appears larger and can fully block the Sun, resulting in a total solar eclipse.
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the pressure indicated by the question mark is the __________.
The pressure indicated by the question mark is systolic pressure. Option 1 is correct.
Systolic pressure is the highest pressure exerted on the walls of the arteries when the heart contracts and pumps blood out into the circulatory system. During each heartbeat, the heart first contracts and pushes blood out of the left ventricle into the aorta, causing an increase in pressure within the arteries.
For instance, in a blood pressure reading of 120/80 mmHg, the systolic pressure is 120 mmHg. Systolic pressure can vary based on factors such as age, physical activity, stress, and overall health. High systolic pressure over time can damage blood vessels and increase the risk of heart disease, stroke, and other health problems.
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--The complete question is, The pressure indicated by the question mark is the __________.
a. systolic pressure
b. mean arterial pressure
c. pulse pressure
d. diastolic pressure--
the primary mirror of telescope a has a diameter of 20 cm, and telescope b has a diameter of 100 cm. how do the light gathering powers of these two telescopes compare?
The area of its primary mirror determines the light-gathering power of a telescope. The larger the mirror, the more light it can collect; thus, the brighter and more detailed the image produced.
The area of a circle is calculated as A = πr^2, where A is the area and r is the circle's radius. Since the diameter of the primary mirror is given, we can calculate the radius by dividing it by 2.
The radius of telescope A, with a diameter of 20 cm, is 10 cm. Therefore, the area of its primary mirror is:
A = πr^2 = π(10 cm)^2 = 100π cm^2
For telescope B, with a diameter of 100 cm, the radius is 50 cm. Therefore, the area of its primary mirror is:
A = πr^2 = π(50 cm)^2 = 2500π cm^2
Comparing the two areas, we can see that telescope B has 25 times more light-gathering power than telescope A:
(2500π cm^2) / (100π cm^2) = 25
So, even though the diameter of telescope B is only 5 times larger than that of telescope A, its light-gathering power is 25 times greater.
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which kind of wave is created by moving a spring toy up and down?
Answer:
Longitudinal wave
Explanation:
Longitudinal waves go up and down. Transverse waves are compression waves.
how much 8fl oz in ml?
The value 8 oz ≈ 236.588 ml.
There are 29.5735296 milliliters (ml) per ounce (oz). Therefore, the formula to convert oz to ml is as follows:
oz x 29.5735296 = ml
When we enter 8 oz into our formula, we get the answer to "What is 8 oz to ml?"
shown below:
8 x 29.5735296 = 236.5882368
8 oz ≈ 236.588 ml
An ounce is a unit of mass or weight that is commonly used in both the imperial and United States customary systems of measurement. One ounce is equivalent to 1/16 of a pound, or approximately 28.35 grams. In the US customary system, ounces are used to measure both solid and liquid substances, such as food ingredients, medications, and cleaning products.
Ounces are often abbreviated as "oz," and they can be divided into smaller units, such as fluid ounces (used to measure the volume of liquids) and troy ounces (used to measure the weight of precious metals like gold and silver). In some industries, such as the cosmetics industry, milliliters are often used instead of ounces. Understanding the concept of ounces is important in many areas of daily life, including cooking, baking, and shopping.
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Which motor performs more work in the same amount of time- a 10 kW motor or a 20 kW motor? How much more work can it do?
Answer:
20kw twice the work
Explanation:
What happens if you scan all the keepers in Mass Effect?
If you scan all the keepers, players can gain a deeper understanding of the game's lore and the larger story arc that unfolds throughout the Mass Effect trilogy.
If you scan all the keepers in the original Mass Effect game, it will unlock an achievement called "Scholar". Scanning all the Keepers is not required to complete the main story or any side missions, but it provides additional lore and backstory to the game's world and its inhabitants.
In the game's story, Keepers are a type of insect-like creatures that maintain the Citadel, a massive space station that serves as the central hub of galactic civilization. Scanning each Keeper reveals additional information about their behavior and physiology, and also uncovers a hidden signal that is being transmitted by the Keepers. This signal is later revealed to be part of a larger plot involving the reapers, a highly advanced and ancient race of machines that periodically wipe out all organic life in the galaxy. The Keepers are revealed to be under the control of the Reapers, and their signal is a key part of their plan to launch a massive invasion of the galaxy.
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Under what condition is pressure altitude and density altitude the same value?
Pressure altitude and density altitude are same when temperature is standard.
When is the pressure altitude and density altitude the same value?Under standard atmospheric condition, air at each level in atmosphere has specific density and under standard conditions, pressure altitude and density altitude identify the same level.
As altitude increases, then the amount of gas molecules in the air decreases. Air becomes less dense than the air nearer to sea level. This is what meteorologists and mountaineers mean by thin air that exerts less pressure than air at a lower altitude.
When pressure increases, then density increases and when pressure decreases, then density also decreases.
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what total force will cause an object with a mass of 10kg to gain 5 meters per second every second?
The total force required to cause an object with a mass of 10kg to gain 5 meters per second every second is 50 Newtons.
What does total force mean?Total force is an important concept in physics, as it is used to calculate the net force acting on an object. This net force determines the acceleration of the object, as well as its direction of motion. Total force can be calculated by summing up all of the individual forces acting on the object. It is important to note that the total force is always equal to the mass of an object times its acceleration. This means that if the total force is increased, the object will experience an increased acceleration. Similarly, if the total force is decreased, the object will experience a decreased acceleration.
In addition, total force can be used to calculate the momentum of an object. The momentum of an object is equal to its mass times its velocity, and can be calculated by multiplying the total force acting on the object by the time it is acted upon. Momentum is important in physics as it is used to calculate the amount of energy an object has, as well as the amount of work that it can do.
The total force required to cause an object with a mass of 10kg to gain 5 meters per second every second is calculated as follows:
Total force = Mass x Acceleration
Total force = 10kg x 5m/s2
Total force = 50 Newtons
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a mass is hanging from spring and vibrating. it is replaced by a mass which is twice as large and its amplitude is increased by a factor of two. what happens to the period of the pendulum?
The period of the pendulum will increase by a factor of √2 when the mass is replaced by a mass that is twice as large, but the amplitude is increased by a factor of 2.
The period of a simple harmonic oscillator, such as a mass hanging from a spring, is given by:
T = 2π√(m/k)
where T is the period, m is the mass, and k is the spring constant.
If we replace the original mass with a new mass that is twice as large, the period will change as follows:
T' = 2π√(2m/k)
where T' is the new period.
If we also increase the amplitude of the motion by a factor of 2, this will not affect the period of the pendulum. The period depends only on the mass and the spring constant, and is independent of the amplitude of the motion.
Therefore, the new period of the pendulum will be:
T' = 2π√(2m/k)
which is equal to the original period multiplied by the square root of 2.
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Which of the following was part of the Challenger’s goals for their mission into space?
to measure distances between satellites orbiting above Earth
to film a documentary segment
to conduct routine repairs on the International Space Station
to initiate contact back to mission control via new communication devices
Answer:
"To film a documentary segment"
Explanation:
For me its option D, but as the answers are listed here it would be option B. I just took the quiz and got this question right. Have a great day! C :
what is fl oz in l conversion?
Fluid ounces (fl oz) and liters (L) are units of volume, with the former being more commonly used in the United States and the latter being more commonly used in most other parts of the world.
To convert from fluid ounces to liters, you can use the following conversion factor:
1 fl oz = 0.0295735 L
Volume is the measure of space occupied by an object or substance. It is expressed in different units depending on the system of measurement used. In the International System of Units (SI), the standard unit of volume is cubic meters (m³). However, in practical situations, other units are commonly used.
In the metric system, liters (L) and milliliters (mL) are used as units of volume. A liter is equal to one cubic decimeter (1 dm³), while a milliliter is one-thousandth of a liter. In the US customary system, fluid ounces (fl oz), cups (c), pints (pt), quarts (qt), and gallons (gal) are used. One fluid ounce is equal to 29.5735 milliliters, while one gallon is equal to 3.78541 liters.
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Why do the hours of daylight and the heating of Earth vary with latitude and throughout the year as the seasons change?
* the way they word it kind of confuses me!
Answer:
The varying Sun-Earth distance and Earth's rotation cause this phenomenon.
Explanation:
Heating of the Earth: A fun fact is that the Earth does not revolve around the sun in a perfect circular path, but instead it revolves in a ellipse path (like an oval shape). This phenomenon would explain Summer and Winter periods. Since the sun is more inclined to one side of the oval, as the Earth gets closer to the same side of the oval, it also gets closer to the Sun, absorbing much more heat, causing higher general temperatures in which we call it Summer. The vice versa could also be explained when the Earth is getting further away from the Sun.
Hours of daylight: We know that the Earth rotates around its axis at an angle of about 23.5 degrees. Now, imagine this. The axis never changes directions no matter the position of the Earth when it revolves around the Sun. During Summer, most continents are directly facing the Sun, projecting more sunlight on a larger surface area. As such, it would take a longer time for the Earth to rotate itself away from the sunlight, causing longer hours of daylight. The vice versa could also be explained when the Earth is further away and generally facing away from the Sun.
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The Greek mathematician Eratosthenes made measurements to show the size of _______.A. the Sun B. the Moon C. Earth D. All of these
The Greek mathematician Eratosthenes made measurements to show the size of Earth.
Eratosthenes is famous for his accurate calculation of the Earth's circumference, which he did using measurements of the Sun's angles of incidence at two different locations on Earth. He realized that the difference in the angles of incidence was due to the curvature of the Earth's surface, and he used this information to calculate the Earth's circumference with remarkable accuracy.
This was a significant achievement in the history of science, and it demonstrated the power of mathematical and observational methods in understanding the world around us.
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What is different about these two trains? explain how this describes speed and velocity.
Speed describes how fast an train is moving, while velocity describes how fast an train is moving in a specific direction.
Speed is a scalar quantity that refers to the magnitude of an object's displacement per unit time. It is expressed in units of distance per unit time e.g. meters per second, miles per hour, etc..
Velocity, on the other hand, is a vector quantity that refers to both the magnitude and direction of an object's displacement per unit time. It is expressed in units of distance per unit time in a specific direction.
When two trains are traveling at the same speed but in different directions, they have different velocities. The velocity of a train traveling in one direction will be positive, while the velocity of a train traveling in the opposite direction will be negative. This difference in direction is what distinguishes velocity from speed.
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An equipotential surface that surrounds a point charge, q, has a potential of 490V and an area of 1.1m^2. Determine q
I tried to solve for r using 1.1 = (pi) r^2....but I see that the cramster solution uses A= 4(pi)r^2. Where does 4(pi) come from?
The value of charge q on an equipotential surface that surrounds a point charge is calculated to be 12.52× 10⁻⁹ C.
The expression to find out electric potential at a distance r is given by,
v = k q /r
where,
v is electric potential
q is charge
r is distance
k is coulomb's constant (9 × 10⁹ Nm²/C²)
Electric potential is given as 490 V.
Area is given as 1.1 m². The expression for area is A = 4 π r².
Making r as subject, we have,
Radius r = √(A/4π) = √(1.1/4π) = √0.087 = 0.23 m
To find out charge, let us make q as subject,
q = v r / k = (490 × 0.23)/(9 × 10⁹) = 12.52× 10⁻⁹ C
Thus, the charge on an equipotential surface that surrounds a point charge is calculated to be 12.52× 10⁻⁹ C.
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A 4500-kg helicopter accelerates upward at 2. 0 m/s2. What lift force is exerted by the air on the propellers?.
The lift force is exerted by the air on the propellers is 53100 N
L = lift
W = weight
The term "force" has a clear definition in science. It is quite acceptable to refer to a force of this level as a push or a pull. An object does not "have in it" or "contain" a force. One thing is subject to a force from another. There is no distinction between living and non-living things in the concept of a force.
F = L - W = ma
L = ma + W = ma + mg = m(a + g)
L = (4500 kg) * (2.0 + 9.8) m/s^2 = 53100 N
Hence, lift force is exerted by the air on the propellers is 53100 N
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A feather and a coin dropped in a vacuum fall with the equal
a) Momentum
b) Acceleration
c) Kinetic energy
d) Forces
In a vacuum, a feather and a coin will fall with equal acceleration, but not with equal forces, momentum, or kinetic energy.
What is kinetic energy?The drag force created by the air causes the feather to descend more slowly than the coin when there is air present. Both objects will descend with the same acceleration owing to gravity if there is no air present since there will be no air resistance.
Because the acceleration caused by gravity is constant, all objects in free fall will experience the same acceleration, which is around 9.8 m/s2, regardless of their mass. This implies that in a vacuum, the feather and the coin will descend at the same pace.
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22. A dry climate causes weathering to take place ____.
A. At the same rate as when the climate is wet
B. More rapidly if it is cold
C. More rapidly than a wet climate
D. More slowly than wet climate
Weathering happens more gradually in a dry climate than in a wet one.
How does the weathering process depend on the climate?The amount of rainfall and the temperature can influence how quickly rocks weather. The pace of chemical weathering is accelerated by high temperatures and heavier rainfall. 2. Compared to comparable rocks living in cold, dry climates, rocks in tropical regions exposed to heavy rainfall and high temperatures weather far more quickly.
What impact do cold and dry have on weathering?The pace of weathering will be the slowest in a cold, dry climate. The rate of weathering will be fastest in an area with a warm, humid climate. A warmer environment will support a wider variety of vegetation, and biological weathering will occur more quickly.
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find the wavelength of 101.7 MHz
The wavelength of a wave with frequency of 101.7 M Hz will be 2.94 meters.
What is Wavelength?Wavelength can be defined as the distance between the two identical points or adjacent crests in the adjacent cycles of a waveform signal which propagates in the space or along a wire.
Speed of light = Wavelength × Frequency
Speed of light = 3 × 10⁸ m/s
Wavelength of light = Speed of light/ Frequency of light
Frequency = 101.7 × 10⁶ Hz
Wavelength = 3 × 10⁸/ 101.7 × 10⁶
Wavelength = 0.0294 × 10² meters
Wavelength = 2.94 meters.
The wavelength of the wave will be 2.94 meters.
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why did newton conclude that gravity has to be mutual and universal?
Newton concluded that gravity had to be mutual and universal because of his laws of motion. According to these laws, every action must have an equal and opposite reaction.
So, when an object attracts another object, the second object must also attract the first. This attraction must exist between all objects in the universe, thus making gravity mutual and universal.
Sir Isaac Newton's laws of motion, which were published in 1687, describe the motion of all objects in the universe.
The first law states that an object will remain at rest or move in a straight line unless an external force acts on it. The second law states that an object will accelerate when an external force acts on it.
From this, Newton concluded that if one object attracted another, then the second object must also be attracted to the first.
Therefore, Newton concluded that gravity was a mutual and universal force that acted between all objects in the universe.
He reasoned that since this force was mutual and acted on all objects, it must be the same force that kept the planets in orbit around the Sun.
This idea of universal gravity was revolutionary and changed the way people thought about the universe.
By demonstrating that all objects in the universe were subject to the same force, Newton showed that the universe was interconnected in a way that had never been seen before.
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Please match each term with it’s correct definition
The terms are paired with their correct definitions as shown above.
Why is physics?Physics is the cornerstone of the other natural sciences (chemistry, geology, biology, astronomy) and is essential to understanding our modern technological society. At the heart of physics is a combination of experiment, observation and the analysis of phenomena using mathematical and computational toolsGiven is to match the terms with the correct definition.
We can write the pairs as -
{ 1 } → { b }
{ 2 } → { f }
{ 3 } → { a }
{ 4 } → { d }
{ 5 } → { e }
{ 1 } → { c }
Therefore, the terms are paired with their correct definitions as shown above.
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What planets are on the ecliptic plane?
The eight planets in our solar system, including Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, are on the ecliptic plane.
The ecliptic plane is defined as the imaginary plane in space that contains Earth's orbit around the sun. Since all of the planets in our solar system orbit the sun, they are also on this same plane. The planets' orbits are not perfect circles, but are rather slightly elliptical, meaning they can vary slightly from the ecliptic plane.
However, in general, the planets stay relatively close to the ecliptic plane as they orbit the sun. This is significant because it allows astronomers to make predictions and observations about the planets' movements and positions in the sky.
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2. Arrange your magnet so that the hoop does the opposite of what it did previously (i.e., if it continued to move, make the hoop stop, and if it stopped, make it continue to move). How did the arrangement of the magnet differ in this case?
Answer:
Step-by-step explanation to arrange a magnet so that the hoop does the opposite of what it did previously:
1. Place the magnet on a flat surface.
2. Identify the direction that the hoop moved previously (i.e., whether it continued or stopped).
3. Turn the magnet so that the poles are facing in the opposite direction of the previous movement of the hoop.
4. Observe the new movement of the hoop and check if it is doing the opposite of the previous movement.
How did the arrangement of the magnet differ in this case? In this case, the arrangement of the magnet was different because the poles were faced in the opposite direction of the previous movement of the hoop. This change in the direction of the magnet's poles caused the hoop to move in the opposite direction.
A particle moves in uniform circular motion with a radius of 3cm. The net force radially acting on the object is 30N. If the mass of the object is 6kg, find;
The centripetal acceleration
The particles linear speed
The acceleration if the radius is doubled with changing the particles speed
Answer:
a = V^2 / r centripetal acceleration
a = F / m given F (radial) = 30 N
1) a = 30 N / 6 kg = 5 m/s^2 centripetal acceleration
2) V^2 = a r = 5 m/s^2 * .03 m = .15 m^2 / s^2
V = .39 m/s
3) I assume "with" should read "without" otherwise the question can't be answered
a = V^2 / (2 * r) if the radius is doubled then the acceleration is halved
Following are the four fundamental forces. Rank these forces from left to right based on their relative strengths between two protons located within the nucleus of an atom, from weakest to strongest.
Forces from left to right based on their relative strengths between two protons located within the nucleus of an atom, from weakest to strongest is Electromagnetism, Weak nuclear force, Strong nuclear force, Gravity.
The four fundamental forces are:
Gravity
Weak nuclear force
Electromagnetism
Strong nuclear force
When considering the strength of these forces between two protons located within the nucleus of an atom, the ranking from weakest to strongest would be:
Electromagnetism
Weak nuclear force
Strong nuclear force
Gravity
The electromagnetic force is responsible for the attraction and repulsion of charged particles, such as protons, and is the force that holds the positively charged protons together in the nucleus of an atom.
The weak nuclear force is responsible for the decay of subatomic particles and is much weaker than the electromagnetic force.
The strong nuclear force is responsible for holding the nucleus of an atom together and is much stronger than the weak nuclear force.
Gravity is the weakest of the four fundamental forces and is responsible for the attraction between massive objects, such as planets and stars. Its strength is negligible at the scale of subatomic particles.
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Question- Following are the four fundamental forces. Rank these forces from left to right based on their relative strengths between two protons located within the nucleus of an atom, from weakest to strongest.
Gravity; weak; electromagnetism; strong
A small turbo-prop commuter airplane, starting from rest on a lansing airport runway, accelerates for 19. 0 s before taking off. Its speed at takeoff is 50. 0 m/s. Calculate the acceleration of the plane, in g's, assuming it remains constant.
The acceleration of the plane, assuming it remains constant, is 0.268 g's.
We can start by using the kinematic equation:
v = u + at
where:
v = final velocity = 50.0 m/s
u = initial velocity = 0 m/s (starting from rest)
a = acceleration
t = time = 19.0 s
Rearranging the equation to solve for acceleration:
a = (v - u) / t
a = (50.0 m/s - 0 m/s) / 19.0 s
a = 2.63 m/s²
To express the acceleration in units of g's, we can divide by the acceleration due to gravity:
a(g) = a / g
a(g) = 2.63 m/s² / 9.81 m/s²
a(g) = 0.268 g
Therefore, the acceleration of the plane, assuming it remains constant, is 0.268 g's.
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John throws a rock down with speed 14 m/s from the top of a 30-m tower. If g = 9. 8 m/s2 and air resistance is negligible, what is the rock's speed just as it hits the ground?.
We can use kinematic equations to solve this kind of problems. Here when the rock is thrown with an initial velocity of 14 m/s from a 30m high tower, the velocity with which the rock hits the ground is 28 m/s.
We can use the distance equation in kinematics to find the velocity when it reaches the ground.
v²-u² = 2aS
v is the final velocity
u is the initial velocity = 14m/s
a is the acceleration, here a= g = 9.8 m/s²
S is the distance travelled = 30 m
v² = u² + 2aS
v² = 14² + 2× 9.8× 30
v² = 784
v = √784 = 28 m/s
So the final velocity is 28 m/s.
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If you were looking for exploding stars, which wavelength band would you likely like to observe?A.Exploding stars make mostly gamma-rays and X-rays, so I would observe these wavelengths.B. The false colors are usually used to represent variations in intensity. This technique allows us to visualize the structure of fainter details.C.The long wavelength of radio waves makes diffraction, and therefore the resolving power, much worse than for a visual light telescope. The solution to this problem is a larger dish, which gives better resolving power.D. No, I could not see.
Exploding stars make mostly gamma-rays and X-rays, so I would observe these wavelengths.
option A.
How does a star explode?When a star explodes, it releases a large amount of energy in various forms, including light. This light can be observed across the electromagnetic spectrum, from gamma-rays and X-rays to visible light, infrared, and radio waves. However, the most energetic and powerful radiation emitted by an exploding star is typically in the form of gamma-rays and X-rays.
Gamma-rays have the highest energy and shortest wavelength in the electromagnetic spectrum, while X-rays have slightly lower energy and longer wavelengths. By observing these wavelengths, astronomers can detect the high-energy processes associated with the explosion, such as the acceleration of particles to near-light speeds and the emission of jets of matter and radiation.
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