Answers
Answer: D 400 N/m
Explanation:
Related Questions
Can you think of a way to explain Hubble's Law other than the
standard Big Bang idea, which includes the concept of a Universe
with no center and no edge?
Answers
An alternative way to explain Hubble's Law without relying on the standard Big Bang idea of a universe with no center and no edge is through the concept of a "tired light" hypothesis.
According to this hypothesis, the redshift observed in distant galaxies is not due to their motion away from us in an expanding universe, but rather the result of photons gradually losing energy as they travel through space.
In the tired light scenario, the wavelength of light is thought to stretch over time due to interactions with matter or other unknown processes. As a result, the light from distant galaxies appears redshifted, mimicking the effect of cosmic expansion. This explanation implies that the universe may have a finite size and a center, challenging the notion of an infinite and uniformly expanding universe.
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Why can emission of gravitational waves lead to mergers of white dwarfs, neutron stars, and black holes?.
Answers
The binary system of the two compact bodies emits gravitational waves which take the momentum away from the system and cause a reduction in the orbital distance in the system leading to the collision of the objects.
What are gravitational waves?Gravitational waves can be described as waves of the intensity of gravity produced by the accelerated masses of a binary system that propagate as waves at the speed of light outward from their source.
They are similar to electromagnetic waves but the gravitational equivalent. Gravitational waves transport energy as gravitational radiation in the form of radiant energy.
The first direct observation of gravitational waves was when a signal generated by the merger of two black holes was received by the LIGO gravitational wave detectors. Gravitational waves are attributed to ripples in spacetime, otherwise, the gravitational waves can be considered as a product of the orbit of binary systems.
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A negative charge, q1, of 6 µC is 0. 002 m north of a positive charge, q2, of 3 µC. What is the magnitude and direction of the electrical force, Fe, applied by q1 on q2? magnitude: 8 × 101 N direction: south magnitude: 8 × 101 N direction: north magnitude: 4 × 104 N direction: south magnitude: 4 × 104 N direction: north.
Answers
Force on the particle is defined as the application of the force field of one particle on another particle. The magnitude and direction of the electrical force will be 4.05×10⁴N towards the north.
What is electrical force?Force on the particle is defined as the application of the force field of one particle on another particle. It is a type of virtual force.
The given data in the problem is
q₁ is the negative charge = 6 µC=6×10⁻⁶ C
q₂ is the positive charge = 3 µC=3×10⁻⁶ C
r is the distance between the charges=0.002 m
\(F_E\) is the electric force =?
The value of electric force will be;
\(\rm F_E= \frac{Kq_1q_2}{r^2} \\\\ F_E= \frac{9\times 10^9\times 6\times 10^{-6}\times3\times10^{-6}}{(0.002)^2}\\\\ \rm F_E=4.05\times10^4\;N\)
Hence the magnitude and direction of the electrical force will be 4.05×10⁴N towards the north.
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Answer:
DDDD
Explanation:
Circle the contact forces from the list:
Magnetism
Air resistance
Weight
Upthrust
Reaction
Answers
If the distance between the two spheres A and B is 500 cm, find the location for the third sphere C so that the net force on it is zero.
Given: mA = 5m and mB = 8m
Answers
The third sphere, C, should be located 750 cm away from both sphere A and B. This is because the magnitude and direction of the forces created at the midpoint of the line connecting two spheres is equal to zero.
Thus, for there to be a net force of zero, the sphere C should be placed at the midpoint of that line which is 500 cm from both spheres A and B, i.e. 750 cm away from each sphere. sphere, C, must be placed at a distance of 900 cm away from sphere A and 800 cm away from sphere B in order for the net force on it to be zero. This can be deduced from using the equation F=Gm1m2/r^2, where F is the gravitational attraction between two masses m1 and m2 that are separated by a distance r.
The net force will be zero when the gravitational attraction of each sphere are equal.The location of the third sphere C must be at a distance 250 cm away from Sphere A and 250 cm away from Sphere B in order for the net force to be zero. This can be determined using F=G*mA*mB/r2, where F is the force of gravity, G is the universal gravitational constant, mA and mB are the masses of the two spheres, and r is the distance between them. If mA is 5m and mB is 8m, the net force of gravity will be zero when r is equal to 500 cm.
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Which substance in the air of U.S. cities has decreased least since the Clean Air Act began?
A. carbon monoxide
B. ground-level ozone
C. particulate matter
D. sulfur dioxide
Answers
Answer: the answer is carbon monoxide
Explanation:
hope this helps :)
What type of waves can be found during a Tsunami?
Answers
Normal ocean waves are caused by the wind, weather, tides, and currents, whereas tsunamis are powered by a geological force. Tsunami waves are surface gravity waves that are formed as the displaced water mass moves under the influence of gravity and radiates across the ocean like ripples on a pond.
hope this helps! ^^
____________________________________________________________
通常の海の波は風、天候、潮汐、海流によって引き起こされますが、津波は地質学的な力によって動かされます。津波は、変位した水塊が重力の影響下で移動し、池のさざ波のように海を横切って放射するときに形成される表面重力波です。
お役に立てれば！ ^^
please help its in science CER, 30 points
Answers
Answer:We have seasons because the earth is tilted (wonky) as it makes its yearly journey around the sun. The Earth's axis is tilted at an angle of 23.5 degrees. This means that the Earth is always "pointing" to one side as it goes around the Sun.
Explanation:
got this from the internet
013 10.0 points
Given: The battleship and enemy ships A
and B lie along a straight line. Neglect air
friction.
A battleship simultaneously fires two shells
with the same initial velocity at these two
enemy ships.
battleship
If the shells follow the parabolic trajectories
shown in the figure, which ship gets hit first?
1. both at the same time
2, need more information
3. A
4. B
Answers
Ship A with a greater angle of projection will hit the target first.
What is time of flight?
The time of flight is the time a projectile takes to reach maximum height and return to the plane of projection. The time of flight is just double the maximum-height time.
Mathematically, time of flight is given as;
T = (2usinθ)/g
where;
u is the initial velocity of projectionθ is angle of projectionThe time of flight depends on initial velocity of the object and angle of projection.
When the initial velocity of both ships is the same and angle of projection varies, the difference in the time of flight will depend greatly on the angle of projection.
Thus, ship A with a greater angle of projection will hit the target first.
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is the force ratio fp/fe greater than 1, less than 1, or equal to 1? explain.
Answers
The force ratio fp/fe is equal to 1. This is because the unsigned charges of the proton and the electron are equal, and they experience the same electric field. The magnitude of the electric force experienced by a charged particle in an electric field at a position is equal to the product of the electric field and the unsigned charge of the particle.
F = qE
where
F is the force
q is the charge
E is the electric field
The proton and the electron have the same charge, so the magnitude of the force they experience is equal. The electric field is also the same, so the force ratio fp/fe is equal to 1.
fp/fe = q_p E / q_e E = 1
In other words, the force on the proton is equal to the force on the electron.
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A box of textbooks is pulled to the right by a force of 10 Newtons and to the left by a force of 5 Newtons. The net force is
Answers
Answer:
I think 5 Newtons to the right.
Answer:
5
52.386552
Explanation:
5 Newton is right
A golf ball of mass 0.045 kg is hit off the tee at a speed of 38 m/s . The golf club was in contact with the ball for 3.10×10−3 s
Find the impulse imparted to the golf ball.
Find the average force exerted on the ball by the golf club.
Answers
The golf club was in contact with the ball for 3.10×10−3 s. The impulse imparted to the golf ball is -1.71 N-s. The average force exerted on the ball by the golf club is -551.6 N.
Given that a golf ball of mass 0.045 kg is hit off the tee at a speed of 38 m/s and the golf club was in contact with the ball for 3.10 × 10⁻³ s.
The impulse imparted to the golf ball:
Impulse, I = Change in momentum = mΔv
Where m = 0.045 kg, v = 38 m/s
When the ball is hit, it will come to rest.
Therefore, final velocity,
v₂ = 0Δv = v₂ - v₁= 0 - 38= -38 m/s
Therefore,
I = mΔv= 0.045 kg × (-38 m/s)= -1.71 N-s
The impulse imparted to the golf ball is -1.71 N-s.
The average force exerted on the ball by the golf club:
Average force,
F = Impulse / Time
Since impulse = -1.71 N-s, time, t = 3.10 × 10⁻³ s
Therefore, F = -1.71 / 3.10 × 10⁻³= -551.6 N
The average force exerted on the ball by the golf club is -551.6 N.A golf ball of mass 0.045 kg is hit off the tee at a speed of 38 m/s.
The golf club was in contact with the ball for 3.10×10−3 s. The impulse imparted to the golf ball is -1.71 N-s. The average force exerted on the ball by the golf club is -551.6 N.
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What does the scale read after the elevator reaches it final constant speed as it heads to the bottom floor?
Answers
The scale in the elevator will read the same value as it did when the elevator was at rest after the elevator reaches its final constant speed as it heads to the bottom floor.
After the elevator reaches its final constant speed as it heads to the bottom floor, the scale in the elevator will read the same value as it did when the elevator was at rest. This is because the scale measures the force exerted by the person standing on it, and this force remains constant once the elevator is moving at a constant speed.
When the elevator is at rest or moving at a constant speed, the force experienced by the person standing on the scale is equal to their weight. This weight is the force exerted on their body due to gravity. Gravity pulls us downwards with a constant acceleration, so the weight of a person remains the same as long as the acceleration is constant.
When the elevator starts moving, there is a brief moment when the scale reading may change due to the acceleration or deceleration. But once the elevator reaches its final constant speed, the acceleration becomes zero. At this point, the scale reading will return to the person's weight, which is the force exerted on the scale.
In conclusion, the scale in the elevator will read the same value as it did when the elevator was at rest after the elevator reaches its final constant speed as it heads to the bottom floor.
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n airplane that flies at 100 km/h in a 100 km/h hurricane crosswind (i.e., the wind is blowing perpendicular to the direction the plane is pointing) has a ground speed of:
A) 200 km/h
B) 0 km/h
C) 141 km/h
D) 100km/h
Answers
The ground speed of the airplane is approximately 141 km/h. Option C is the correct answer.
The ground speed of an airplane flying in a crosswind can be determined using vector addition.
The airplane's ground speed is the vector sum of its airspeed (100 km/h) and the velocity of the crosswind (100 km/h). Since the wind is blowing perpendicular to the direction the plane is pointing, we can use the Pythagorean theorem to find the magnitude of the ground speed.
Ground speed = √(airspeed² + crosswind velocity²)
Ground speed = √(100² + 100²)
Ground speed = √(10000 + 10000)
Ground speed = √20000
Ground speed ≈ 141.4 km/h
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Compared to blue light, red light has ...
a. shorter wavelength, larger frequency, less energy
b. longer wavelength, larger frequency, greater energy
c. shorter wavelength, smaller frequency, greater energy
d. longer wavelength, smaller frequency, less energy
e. shorter wavelength, larger frequency, greater energy
Answers
Compared to blue light, red light has a longer wavelength, smaller frequency, less energy. Therefore, the correct option is (d) longer wavelength, smaller frequency, less energy.
Wavelength is the distance between two peaks or two troughs in a wave, while frequency is the number of waves that pass through a point in a second. The amount of energy in a wave is determined by its wavelength and frequency. The shorter the wavelength and the greater the frequency, the more energy a wave has. Similarly, the longer the wavelength and the smaller the frequency, the less energy a wave has.
Red light has a longer wavelength than blue light, which means it has a smaller frequency. Thus, red light has less energy than blue light, which has a shorter wavelength and a larger frequency.
This makes option (d) the correct answer, longer wavelength, smaller frequency, less energy.
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An object, moving with a constant velocity, travels 274 m in 23 s, What is its velocity?
Answers
Answer:
11.91 s
Explanation:
274/23=11.91 Second
Two particles are separated by 0.38 m and have charges of -6.25x 10-9 C
and 2.91 x 10-9 C. Use Coulomb's law to predict the force between the
particles if the distance is cut in half. The equation for Coulomb's law is
Fe=
kag, and the constant, &, equals 9.00 x 10º N-m?/C2
A. -1.13 x 10-6 N
B. 4.53 x 10-6 N
C. 1.13 x 10-6 N
D. -4.53 x 10-6 N
Answers
Answer: -4.53×10-6N
Explanation:
The magnitude of the electrostatic force F between two point charges q1 and q2 is directly proportional to the product of the magnitudes of charges and inversely proportional to the square of the distance between them. Like charges repel each other, and opposite charges mutually attract.
As the name states, the cars of a roller coaster really do coast along the tracks. A motor pulls the cars up a high hill at the beginning of the ride. After the hill, however, the motion of the car is a result of gravity and inertia. As the cars roll down the hill, they must pick up the speed that they need to whiz through the rest of the curves, loops, twists, and bumps in the track. To learn more about designing roller coasters, read the interview with Steve Okamoto.
How did you become a roller coaster designer?
I have been fascinated with roller coasters ever since my first ride on one. I remember going to Disneyland as a kid. My mother was always upset with me because I kept looking over the sides of the rides, trying to figure out how they worked. My interest in finding out how things worked led me to study mechanical engineering. What sort of training do you have I earned a degree in product design. For this degree, I studied mechanical engineering and studio art. Product designers consider an object's form as well as its function.They also take into account the interests and abilities of the
product's consumer. Most rides and parks have some kind of theme, so I must consider marketing goals and concerns in my designs.
What is the nature of your work?
To design a roller coaster, I study site maps of the location. Then, I go to the amusement park to look at the actual site.Because most rides I design are for older parks (few parks are built from scratch), fitting a coaster around, above, and in
between existing rides and buildings is one of my biggest challenges. I also have to design how the parts of the ride will work together. The towers and structures that support the ride have to be strong enough to hold up a track and speeding cars that are full of people. The cars themselves need special wheels to keep them locked onto the track andseat belts or bars to keep the passengers safely inside. It's
like putting together a puzzle, except the pieces haven't
been cut out yet.
What advice do you have for a student who is interested in designing
roller coasters?
Studying math and science is very important. To design a successtulcoaster, I have to understand how energy is converted from one form to another as the cars move along the track. I have to calculate speeds and accelerations of the cars on each part of the
track. They have to go fast enough to make it up the next hill! I rely on my knowledge of geometry and physics to create the roller coaster's curves.loops, and dips. Sammrazie in two paragraphs
Answers
The summary of the interview with Steve Okamoto a roller coaster designer highlighted how he developed a fascination for rollercoasters and how he successfully learned how to build them.
What is the summary of the interview with Steve Okamoto?The summary of the interview with Steve Okamoto is given below.
In an interview with Steve Okamoto, a roller coaster designer, he explained that his fascination with roller coasters began at a young age, and his interest in finding out how they worked led him to study mechanical engineering and product design. As a roller coaster designer, Okamoto's work involves studying site maps, designing how the parts of the ride will work together, and fitting coasters around existing rides and buildings. He also has to consider marketing goals and concerns in his designs, as most parks have some kind of theme. Okamoto recommends that students interested in designing roller coasters should focus on studying math and science, and understanding how energy is converted from one form to another as the cars move along the track.
Overall, Okamoto's work as a roller coaster designer involves a combination of mechanical engineering, product design, and consideration for marketing goals and existing park infrastructure. To design a successful roller coaster, he relies on his knowledge of math, science, geometry, and physics to calculate speeds, accelerations, and the coaster's curves, loops, and dips. His advice for students interested in designing roller coasters is to focus on studying math and science, and understanding how energy is converted throughout the coaster's track.
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Which is NOT an example of work?
pushing a box across the floor
trying to push a rock that never moves
picking up a box off the floor
raising a barbell over your head
Answers
Answer:
trying to push a rock that never moves
Explanation:
let me try my best to break the concepts down for you.
the definition of work done is
work done by a constant force on an object is the product of the force and the distance moved by the object in the direction of the force.
this means that when you apply a force, it must move.
basically it is like holding a book in your hands and not moving, are you fighting the gravitational force?
when you push a box, it definitely moves in the direction you push right?
when you raise the barbel, you are applying a upward force, and barbel us moving upwards, so work is done
hope it helps, if not please report it so that someone else gets to try it
a boat in the trough of a wave takes 3 s to reach the highest point of the wave. the velocity of the wave is 5 m/s. what is its wavelength?
Answers
Answer: A boat in the trough of a wave takes 3 seconds to reach the highest peak of the wave, then its wavelength will be equal to 30 m.
Explanation:
The wavelength of the wave is 15 m.
The wavelength of a wave is the distance between two consecutive crests or troughs. The velocity of a wave is the speed at which it travels. The time it takes for a boat to travel from the trough of a wave to the highest point of the wave is the same as the time it takes for the wave to travel one wavelength.
In this case, the velocity of the wave is 5 m/s and the time it takes for the boat to travel from the trough of the wave to the highest point is 3 s.
wavelength = velocity * time
wavelength = 5 m/s * 3 s = 15 m
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Use words from the box to complete the sentences below.
-direction
-energy
-mass
-size
Vectors have size and ___
Scalars have only ____
Answers
Answer:
direction
size
Explanation:
Vectors are physical quantities with both magnitude or size and direction.
Scalars are physical quantities with only size but not direction.
Examples of vectors are velocity, displacement and force. Examples of scalar are distance and speedWhen describing a vector, on must specify its magnitude and direction.
Only the size of scalar quantities are needed to describe them.
Un punto se ubica en un sistema de coordenadas polar por las coordenadas r = 7.6 m y = 30°. Encuentre las coordenadas x y y de este punto (en m), suponiendo que los dos sistemas de coordenadas tienen el mismo origen.
Answers
Answer:
Las coordenadas del punto son \((x,y) = (6.582\,m, 3.8\,m)\).
Explanation:
La relación entre un vector en formato polar y uno con formato rectangular con respecto al mismo origen queda sintetizado por la siguiente expresión:
\((x, y) = r\cdot (\cos \theta, \sin \theta)\) (1)
Donde:
\(r\) - Magnitud de la distancia del punto con respecto al origen, medido en metros.
\(\theta\) - Dirección del punto con respecto del semieje +x, medido en grados sexagesimales.
\(x,y\) - Coordenadas rectangulares del punto con respecto al origen, medidas en metros.
Si sabemos que \(r = 7.6\,m\) y \(\theta = 30^{\circ}\), entonces las coordenadas rectangulares del punto con respecto al origen son:
\((x,y) = (7.6\,m)\cdot (\cos 30^{\circ}, \sin 30^{\circ})\)
\((x,y) = (6.582\,m, 3.8\,m)\)
Las coordenadas del punto son \((x,y) = (6.582\,m, 3.8\,m)\).
a rock stays in the same position without moving, which law is it ?
Answers
Answer:This is also known as the law of inertia. EXPLANATION: Inertia is the tendency of an object to remain at rest or remain in motion.
True or false, galaxies look the same whether viewed in visible or x-ray wavelengths.
Answers
False.
Galaxies do not look the same when viewed in visible or X-ray wavelengths. The electromagnetic spectrum consists of various wavelengths, including visible light and X-rays, each carrying different types of information about celestial objects.
When observing galaxies in visible light, we primarily see the light emitted by stars within the galaxies. This provides information about the distribution of stars, their colors, and the overall structure of the galaxy. Visible light observations are commonly used to study the morphology and stellar populations of galaxies.
On the other hand, X-ray observations reveal a different aspect of galaxies. X-rays are produced by extremely energetic processes, such as accretion onto black holes, supernova remnants, and hot gas in galaxy clusters. By observing galaxies in X-ray wavelengths, we can study active galactic nuclei, high-energy phenomena, and hot gas properties within galaxies and galaxy clusters.
Visible light observations provide insights into the stellar content and structure of galaxies, while X-ray observations give us information about the energetic processes and hot gas within galaxies. Therefore, galaxies can appear different when viewed in visible or X-ray wavelengths.
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A vehicle is traveling at a velocity of 30 meters per second. Exactly 5 second later, its velocity changed by a factor of 0.6. What was the vehicle's average acceleration over that time period?
Answers
Answer:
30MPH
Explanation:
30/5 = 6 x 5 = 30 mph
What is the main source of carbon dioxide in the atmosphere
Answers
Answer: respiration by animals and plants and burning of fuel.
Explanation: would be happy if u give me branliest pls do it
you drive five blocks due north, five blocks due east, and another two blocks due north. what is the magnitude of your displacement?
Answers
The magnitude of your displacement is approximately 8.6 blocks.
The magnitude of your displacement is the shortest distance between your starting point and ending point, regardless of the path taken. To calculate this, we can use the Pythagorean theorem:
- The distance traveled due north is 5 + 2 = 7 blocks.
- The distance traveled due east is 5 blocks.
Therefore, the total displacement is the hypotenuse of a right triangle with sides of 7 blocks and 5 blocks. Using the Pythagorean theorem, we get:
displacement^2 = (7 blocks)^2 + (5 blocks)^2
displacement^2 = 49 blocks^2 + 25 blocks^2
displacement^2 = 74 blocks^2
Taking the square root of both sides, we get:
displacement = √74 blocks
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The pitch of sound is determined by its:
A
Frequency
B
Speed
C
Intensity
D
Amplitude
Answers
The pitch of sound is determined by its: Frequency. The correct option is (A).
The pitch of sound refers to how high or low a sound is perceived by the human ear. It is primarily determined by the frequency of the sound wave.
Frequency is defined as the number of cycles or vibrations of a wave that occur in a given unit of time. In the context of sound, it represents the number of oscillations or back-and-forth movements of air particles per second.
When a sound wave has a high frequency, it is perceived as a high-pitched sound. This means that the air particles vibrate rapidly, creating a higher frequency of compressions and rarefactions.
On the other hand, when a sound wave has a low frequency, it is perceived as a low-pitched sound, with slower vibrations and a lower frequency of compressions and rarefactions.
Speed, intensity, and amplitude are other characteristics of sound but are not directly related to the perception of pitch.
The speed of sound refers to how fast it travels through a medium, intensity relates to the energy or power of a sound wave, and amplitude refers to the maximum displacement of air particles from their equilibrium position.
While these factors can affect the overall perception of sound, they do not determine the specific pitch of a sound.
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how far does an object move in 1 second
Answers
It accelerates at about 32 feet per second every second, so it starts falling at zero feet per second and, one second later it is traveling at 32 feet per second. That means that its average speed is 16 feet per second, so it will fall 16 feet in the first second.
fill in the blanks
11) Stored energy is called ________ energy.
12) When you move your hand or foot, your body has converted potential energy into ________ energy.
13) When coasting while roller skating, you eventually stop due to ________.
14) A ball has 100 J of potential energy when it is on a shelf. The kinetic energy of the ball the instant it hits the floor is ________J.