This series of images shows the pulsar at the center of the crab nebula looking bright every 0. 033 second. Based on these data and current theory of pulsars, what can we conclude?.
Answers
The series of images shows the pulsar at the center of the crab nebula looking bright every 0. 033 second. Based on these data and current theory of pulsars, we can conclude that pulsars are rotating neutron stars that emit beams of radiation from their magnetic poles.
A pulsar is a rotating neutron star that emits beams of radiation from its magnetic poles. These beams of radiation emit a lighthouse-like pattern of radiation that can be detected as pulsations of light when the beam sweeps across the Earth. Pulsars are extremely dense objects that have a radius of only about 10 kilometers and a mass of about 1.4 times that of the Sun.
The regularity of the pulsations indicates that the pulsar is very stable and has a well-defined magnetic field. The discovery of pulsars in 1967 was a major milestone in astrophysics, as it provided the first direct evidence for the existence of neutron stars. Since then, pulsars have been studied extensively and have provided a wealth of information about the properties of matter under extreme conditions. Pulsars are also important probes of the interstellar medium, as they allow astronomers to study the properties of the material that lies between the pulsar and the Earth.
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Related Questions
Describe a situation
where you know the mechanical
energy was not conserved. That is,
you know that total energy at the
start is not the same as at the end.
Why do you think it was not
conserved?
If you are struggling to think of
something, imagine a scenario where
there's some energy in the system at
the start, but then 0 J of energy in
the system by the end. Or vice versa.
Answers
Answer:
It has previously been mentioned that there is a relationship between work and mechanical energy change. Whenever work is done upon an object by an external force (or nonconservative force), there will be a change in the total mechanical energy of the object. If only internal forces are doing work (no work done by external forces), then there is no change in the total amount of mechanical energy. The total mechanical energy is said to be conserved. In this part of Lesson 2, we will further explore the quantitative relationship between work and mechanical energy in situations in which there are no external forces doing work.
The quantitative relationship between work and the two forms of mechanical energy is expressed by the following equation:
KEi + PEi + Wext = KEf + PEf
There are no results for Particles q1 = -66.3 UC, q2 = +108 uC, and 93 = -43.2 uC are in a line. Particles q1 and q2 are separated by 0.550 m and particles q2 and q3 are separated by 0.550 m. What is the net force on particle q2? Remember: Negative forces (-F) will point Left Positive forces (+F) will point Right + 108 MC 92 -43.2 MC 93 0.550 m -66.3 MC 91 0.550 m
Answers
The total of all forces acting on an object is known as the net force. A mass can accelerate due to net force.
How to calculate net force ?The total of all forces acting on an object is known as the net force. A mass can accelerate due to net force. Whether a body is at rest or in motion, it is subject to another force. When there are a lot of forces acting on a system, the term "net force" is used.
here r12 = 0.550m r23= = 0.550m Then the distance from the first charge to the third one will be:
r13 =r12+r23=0.550+0.550 = 1.1m
According to the Coulomb's law, the net force on particle q2 will be equal to the sum of the forces on particle q2 from the particle q1 and q3.
F3+=F13+F23=q1q2/r²13 + k q3q2/r²23
Where k = 9×\(10^{9}\) N m²/C²
Substituting numerical values, obtain:
F3= 9×\(10^{9}\)(-66.3 × \(10^{-6}\))(-43.2×9×\(10^{-6}\))/1.45²+9 ×\(10^{9}\) 108×\(10^{-6}\)(-43.2 ×\(10^{-6}\))/0.550²
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In any thermodynamic system that deals with the transfer of thermal energy, which of thefollowing is the most ideal state for that system?
Answers
Thermodynamics can be said to be a branch of Physics which involves the transfer of heat and other energy forms.
Thermal energy is the energy possesed by a system due to its temperature.
In thermodynamics, during the transfer of thermal energy, energy is wasted due to entryopy. And entropy is the measure of disorder of a system.
Therefore, in amy thermodynamic system that deals with the transfer of thermal energy, the most ideal state for that system is Entropy
ANSWER:
A. Entropy
Two persons (each on a skateboard) are initially standing still and facing each other before pushing off of each other. One person (50 kg) moves backwards at 1.1 m/s. Calculate the velocity of the second person (65 kg).
Answers
Answer:
The second person will have a velocity of 0.85 m/s in the opposite direction of the first person.
Explanation:
Law Of Conservation Of Linear Momentum
The total momentum of a system of bodies is conserved unless an external force is applied. The formula for the momentum of a body with mass m and velocity v is:
P=mv.
If we have a system of bodies, then the total momentum is the sum of them all
\(P=m_1v_1+m_2v_2+...+m_nv_n\)
If a collision occurs, the velocities change to v' and the final momentum is:
\(P'=m_1v'_1+m_2v'_2+...+m_nv'_n\)
In a system of two masses, the law of conservation of linear momentum is:
\(m_1v_1+m_2v_2=m_1v'_1+m_2v'_2\)
According to the conditions of the problem, two persons standing on a frictionless surface are initially at rest (v1=0, v2=0). Their masses are m1=50 Kg and m2=65 Kg. After the push, one person (say m1) moves backward at v1'=-1.1 m/s. We can calculate the speed of the other person by solving for v2':
\(\displaystyle v'_2=\frac{m_1v_1+m_2v_2-m_1v'_1}{m_2)\)
Substituting:
\(\displaystyle v'_2=\frac{50*0+65*0-50(-1.1)}{65)\)
\(\displaystyle v'_2=\frac{55}{65}\)
\(v'_2=0.85 \ m/s\)
The second person will have a velocity of 0.85 m/s in the opposite direction of the first person.
10.
You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is
negligible friction between your feet and the ice. A friend throws you a 0.4 kg ball that is traveling
horizontally at 10 m/s. Your mass is 70 kg. If you catch the ball, with what speed do you and the ball
move afterwards?
1.02 m/s
0.06 m/s
0.02 m/s
0.12 m/s
Answers
Answer:
Explanation:
This is a classic Law of Momentum Conservation problem. For us the equation will look like this:
\([(m_yv_y+m_bv_b)]_b=[(m_y+m_b)v_{both}]_a\) Filling in with our given info:
\([(70.0)(0)+(.40)(10.0)]_b=[(70.0+.40)v_{both}]_a\) and
4.0 = 70.4v and
v = .06 m/s
A 7 kg rock has been dropped from a high cliff and experiences a force of air resistance of 7 N. What is the acceleration of the rock
Answers
The acceleration of the rock is approximately 8.8 m/s².
To find the acceleration of the rock, we need to consider the net force acting on it. In this case, the net force is the difference between the force of gravity and the force of air resistance.
The force of gravity acting on the rock can be calculated using the equation F = mg, where m is the mass of the rock (7 kg) and g is the acceleration due to gravity (approximately 9.8 m/s²).
F_gravity = (7 kg) × (9.8 m/s²) = 68.6 N
The net force can be determined by subtracting the force of air resistance from the force of gravity: Net force = F_gravity - F_air resistance = 68.6 N - 7 N = 61.6 N
Finally, we can calculate the acceleration using Newton's second law, F = ma, where F is the net force and m is the mass of the rock: 61.6 N = (7 kg) × a
Solving for a, we find: a = 61.6 N / 7 kg ≈ 8.8 m/s²
Therefore, the acceleration of the rock is approximately 8.8 m/s².
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The nucleus and the _____ are held together by the electrostatic force.
Answers
Answer:
should be chemical bond
Explanation:
briefly summarize the planetary properties we can in principle measure with current detection methods.
Answers
The planetary properties are given as follows:
Orbital Period and Distance: All of the primary detection methods provide an orbital period, which may be used to compute orbital distance. Doppler and astrometric approaches can be used to calculate orbital eccentricity.
Planetary Mass: A larger planet will lead its star to travel faster around its center of mass. Transit observations can determine the size/radius of a planet.
The density of the Planet: It is possible to provide a transit method size and a dopplers technique with mass. Temperature and Atmospheric Composition.
What are Planetary Properties?According to the rules, a planet must perform three things:
It must revolve around a star (in our cosmic neighborhood, the Sun). It must be large enough to be pushed into a spherical form by gravity. It had to be large enough that its gravity swept away any other objects of a similar size in its orbit around the Sun.Planets differ in attributes because they are at various distances from the sun, have different sizes, and are formed of different materials than the Earth. Very small planets lack the gravitational field required to retain much of their atmosphere.
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what is the difference between speed and velocity in physics
Answers
The primary difference between speed and velocity is that speed is a scalar quantity that describes how fast an object is moving, while velocity is a vector quantity that describes how fast an object is moving in a particular direction
Speed and velocity are two critical concepts in physics. They are used to describe the motion of an object. While both describe how fast an object is moving, there are some fundamental differences between the two. Let's explore these differences.
What is speed?
Speed is a scalar quantity that describes how quickly an object moves. It is measured in meters per second (m/s) or kilometers per hour (km/h).
Speed can be calculated using the following formula:
speed = distance ÷ time
For example,
if an object covers a distance of 150 meters in 10 seconds, its speed can be calculated as follows:
Speed = distance ÷ time= 150 meters ÷ 10 seconds= 15 meters per second (m/s)
What is velocity?
Velocity, on the other hand, is a vector quantity that describes how fast an object is moving in a particular direction. It is measured in meters per second (m/s) or kilometers per hour (km/h).
Velocity can be calculated using the following formula:
velocity = displacement ÷ time
For example, if an object travels a displacement of 150 meters in 10 seconds in a specific direction, its velocity can be calculated as follows:
Velocity = displacement ÷ time= 150 meters ÷ 10 seconds= 15 meters per second (m/s) in a specific direction.
In conclusion, the primary difference between speed and velocity is that speed is a scalar quantity that describes how fast an object is moving, while velocity is a vector quantity that describes how fast an object is moving in a particular direction.
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How much work is performed when a 50 kg crate is pushed 15 m with a force of 20 N?
Answers
Answer:
300 jules
Explanation:
Which best describes the electric field created by a positive charge?
A. It circles clockwise around the charge.
B. It circles counterclockwise around the charge.
C. Its rays point away from the charge.
D. Its rays point toward the charge.
Answers
Answer:
Which best describes the electric field created by a positive charge? ... Its rays point toward the charge.
Explanation:
thank me later
A 1.25 m long pendulum on Mars
has a period of 3.65 s. What is the
acceleration of gravity g on Mars?
(Unit = m/s^2)
Help please
Answers
Explanation:
\(period = 2\pi \sqrt{ \frac{length}{g} } \)
\(3.65 \: s = 2\pi \sqrt{ \frac{(1.25 \: m)}{g} } \)
Squaring both sides and solving for g, we get
g = 3.70 m/s^2
which is close to what is expected (3.71 m/s^2).
what 3 things are produced as a result of the fusion of two atoms
Answers
Answer:
Electron, proton and neutron
Explanation:
In each and every atom they are consist of electron, proton and neutron.
1. When is the kinetic energy of an electron transformed into potential energy?
when it interacts with other electrons, decreasing its speed
when it interacts with other electrons without changing its speed
2. Atoms bond to form molecules. Which structures or regions of the atoms interact in these bonds?
electric fields of particles with no charge
electric fields of particles with negative charge
electric fields of particles with opposite charges
3. In particle accelerators such as the one shown, fields are employed to separate different subatomic particles. What type or types of fields are employed, and what characteristics do these particles need to have in order to be separated?
Both electric and magnetic fields are applied. Particles need to be charged.
Electric fields are applied. Particles need to come from the same type of atom.
4. If two electrons that are apart get pushed toward each other, how does the repulsion between them change?
Initial repulsion is high and increases as they approach.
Initial repulsion is low and decreases as they approach.
Initial repulsion is high and decreases as they approach.
Initial repulsion is low and increases as they approach.
Answers
Answer:
1.) when it interacts with other electrons, decreasing its speed
Explanation:
2.) electric fields of particles with opposite charges
3.)Both electric and magnetic fields are applied. Particles need to be charged.
4.)Initial repulsion is high and increases as they approach.
5.)5.6×10^2 N
The correct options shown below,
1. When it interacts with other electrons, decreasing its speed
2. Electric fields of particles with opposite charges
3. Electric fields are applied. Particles need to come from the same type of atom.
4. Initial repulsion is high and increases as they approach.
The kinetic energy of an electron transformed into potential energy . when it interacts with other electrons, decreasing its speed The Atoms bond to form molecules. the structures which interact in these bonds is, electric fields of particles with opposite charges. In particle accelerators such as the one shown, Electric fields are applied and Particles need to come from the same type of atom. When two electrons that are apart get pushed toward each other, the Initial repulsion is high and increases as they approach.Learn more:
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A gannet is a seabird that fishes by diving from a great height. You may want to review If a gannet hits the water at 32 m/s, what height did it dive from? Assume that the gannet was motionless before starting its dive. Express your answer to two significant figures and include the appropriate units. h =
Answers
After considering the given data the height from which the gannet dived is approximately 51.84 m.
To evaluate the height from which a gannet dived if it hits the water at 32 m/s, assuming that the gannet was motionless before starting its dive, we can apply the law of conservation of energy, which projects that the initial potential energy of the gannet is equivalent to its final kinetic energy prior to hitting the water. Then, we can write:
\(mgh = (1/2)mv^2\)
Here:
m = mass of the gannet
g = acceleration due to gravity
h = height from which the gannet dived
v = velocity of the gannet just before hitting the water
Considering that the mass of the gannet is 1 kg, and applying substitution of the given values, we get:
\((1 kg)(9.8 m/s^2)(h) = (1/2)(1 kg)(32 m/s)^2\)
\(h = (1/2)(32 m/s)^2 / (9.8 m/s^2)\)
h = 51.84 m
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The complete question is
A gannet is a seabird that fishes by diving from a great height. If a gannet hits the water at 32 m/s , what height did it dive from? Assume that the gannet was motionless before starting its dive.
A satellite 1000 km above Mars is orbiting Mars every 15 hours.
The radius of Mars is approximately equal to 3,300 km. How far does
the satellite travel in 1 hour?
Answers
The satellite travels approximately 1,798.07 km in 1 hour. The circumference of the satellite's orbit is 8,600π km, and the satellite orbits Mars every 15 hours.
To find out how far the satellite travels in 1 hour, we need to determine its orbital circumference.
The circumference of a circular orbit can be calculated using the formula:
C = 2πr
where C is the circumference and r is the radius of the orbit.
In this case, the satellite is orbiting Mars, which has a radius of approximately 3,300 km. The satellite is 1,000 km above the surface of Mars. Therefore, the radius of the satellite's orbit is the sum of the radius of Mars and the distance above the surface:
r = 3,300 km + 1,000 km = 4,300 km
Now we can calculate the circumference:
C = 2π(4,300 km) = 8,600π km
Since the satellite orbits Mars every 15 hours, the distance traveled in 1 hour is 1/15th of the circumference:
\(\begin{equation}\text{Distance traveled in 1 hour} = \frac{1}{15} \cdot 8600\pi \text{ km}\)
Calculating this value gives us:
Distance traveled in 1 hour ≈ 1,798.07 km
Therefore, the satellite travels approximately 1,798.07 km in 1 hour.
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An impulse of 20,000 N*s is applied to a car, bringing it to a stop in 0.17 seconds. What force was applied to the car?
Answers
F =
t = 0.17 s
Impulse (J) = 20,000 N
J = F x t
F = J / t = 20,000 Ns / 0.17 s = 117,647.0588 N
A clockwise net torque acts on a wheel. What can be said about it's angular velocity?
1) it is ccounterclockwise
2) it is clockwise
3) it doesnt exist
4) Not enough information
Answers
When a clockwise net torque acts on a wheel, it creates a rotational force that causes the wheel to rotate in the same direction, which is clockwise. So, (2) is the correct option.
The magnitude of the angular velocity depends on factors such as the moment of inertia of the wheel and the magnitude of the torque applied.
If the net torque is strong enough, it will accelerate the wheel's rotation, resulting in a higher angular velocity.
Conversely, if the torque is weak or opposing torques are present, the wheel's angular velocity may decrease or even come to a stop.
So, 2) it clockwise seems correct answer.
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what is the magnitude of the electric field between the plates
Answers
Answer: The magnitude of the electric field (E) between the plates is the potential difference (V) divided by the distance between the plates (d).
Explanation:
What is the electric field?An electric field is a physical field that surrounds electrically charged particles and exerts a force on other charged particles that are present in the field. It is a vector field, meaning that it has both magnitude and direction, and it is typically denoted by the symbol E.
To determine the magnitude of the electric field between the plates, you need to follow these steps:
1. Identify the potential difference (voltage) between the plates, usually denoted as V.
2. Measure the distance between the plates, typically represented as d.
3. Apply the formula for the magnitude of the electric field, E = V/d.
The magnitude of the electric field (E) between the plates is the potential difference (V) divided by the distance between the plates (d).
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A piano has a mass of 99 kg. What is the weight of the piano?
Answers
Explanation:
weight of the piano = mg
w = 99 x 10 =990 N
Write a hypothesis about the effect of the fan speed on the acceleration of the cart. Use the "if . . . then . . . because . . .” format and be sure to answer the lesson question: "How does an object's position and velocity change as the object accelerates?”
Answers
Answer:
If the fan speed increases, then the acceleration increases because a greater fan speed supplies more energy to move the cart.
Explanation:
Edge
A ray of sunlight forms a 24°-angle with the ground. what is the length of the shadow cast by a person 1.82 m tall?
Answers
The length of the shadow cast by a person who is 1.82 m tall when a ray of sunlight forms a 24° angle with the ground is approximately 4.09 meters.
To solve this problem, we'll use trigonometry with the given angle and the height of the person to find the length of the shadow. We know that the angle between the sunlight and the ground is 24°, and the person is 1.82 m tall.
We can model this situation using a right triangle, where the person's height represents the opposite side, the length of the shadow represents the adjacent side, and the angle of elevation is 24°. To find the length of the shadow, we can use the tangent function, which is defined as the ratio of the opposite side to the adjacent side in a right triangle.
So, we have:
tan(24°) = opposite side (height of the person) / adjacent side (length of the shadow)
Now, we can plug in the height of the person:
tan(24°) = 1.82 m / length of the shadow
To find the length of the shadow, we can rearrange the equation and solve for it:
Length of the shadow = 1.82 m / tan(24°)
Using a calculator, we find that:
Length of the shadow ≈ 1.82 m / 0.4452 ≈ 4.09 m
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Cho hai quả cầu nhỏ trung hòa điện đặt trong không khí, cách nhau 40cm và sử có bốn nhân 10 mũ 12 electron tư quả cầu này di chuyển sang qua câu kia hỏi khi đó hai quả cầu Vũ thấy đầy nhau tỉnh đô lớn của lực đó
Answers
Answer:
Cho hai quả cầu nhỏ trung hòa điện đặt trong không khí, cách nhau 40cm và sử có bốn nhân 10 mũ 12 electron tư quả cầu này di chuyển sang qua câu kia hỏi khi đó hai quả cầu Vũ thấy đầy nhau tỉnh đô lớn của lực đó
while at rest on a hillside, army the armadillo rolls up into a ball. as a result, they begin to roll down the hill. at a certain moment during the roll, their gravitational potential energy has decreased by 40 j, and their translational kinetic energy has increased by 15 j. by how much has their rotational kinetic energy changed?
Answers
The rotational kinetic energy of the armadillo has increased by 25 joules.
This is because the armadillo is rolling down the hill, which means that it is rotating around its center of mass. As it rolls, it is converting its gravitational potential energy into translational and rotational kinetic energy.
Since the gravitational potential energy has decreased by 40 joules and the translational kinetic energy has increased by 15 joules, the remaining 25 joules must have been converted into rotational kinetic energy. This means that the armadillo's rotational kinetic energy has increased by 25 joules.
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Which of the following statement/s is/are true? Check all that apply. Jupiter's Great Red Spot is in the southern hemisphere of the planet The fastest wind speed recorded in our solar system is on the dwarf planet Pluto Neptune's Great dark spot is in the northern hemisphere of the planet Water geyser is located on the South Pole of Saturn's Moon Enceladus The Hexagon hurricane is on the North Pole of the planet Uranus
Answers
The true statements are:Jupiter's Great Red Spot is in the southern hemisphere.The fastest wind speed recorded in our solar system is on Neptune.
Among the given statements, only two are true. Jupiter's Great Red Spot, a massive storm, is indeed located in the southern hemisphere of the planet. The Great Red Spot is a prominent feature on Jupiter, visible as a giant swirling storm system. On the other hand, the fastest wind speed recorded in our solar system, reaching speeds of up to 2,100 kilometers per hour (1,300 miles per hour), is found on Neptune.
The strong winds on Neptune contribute to its dynamic atmosphere and the formation of features like the Great Dark Spot. The remaining statements about Pluto, Saturn's moon Enceladus, and Uranus are not true according to our current understanding.
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A car accelerates at a rate of 13m/s^2[S]. If the car's initial velocity is 120km/h[N]. What will its final velocity be in m/s, after two seconds.
Answers
Answer:
the final velocity of the car is 59.33 m/s [N]
Explanation:
Given;
acceleration of the car, a = 13 m/s²
initial velocity of the car, u = 120 km/h = 33.33 m/s
duration of the car motion, t = 2 s
The final velocity of the car in the same direction is calculated as follows;
v = u + at
where;
v is the final velocity of the car
v = 33.33 + (13 x 2)
v = 59.33 m/s [N]
Therefore, the final velocity of the car is 59.33 m/s [N]
which of the following do you predict will conduct electricity when dissolved in water?
Answers
Answer:
Ionic compounds conduct electricity when dissolved in water
Explanation:
I need help!!!!
Please and thank u!
Answers
Answer:
False
True
False
True
False
True
Explanation:
A ball has a centripetal acceleration of 12.0 m/s 2 while traveling in a circle of radius 3.0 m.
a. In what direction is the ball's acceleration?
b. Calculate the ball's tangential speed?
c. Calculate the ball's period of frequency?
Answers
The ball's acceleration is directed towards the center of the circle.
the tangential speed of the ball is 7.35 m/s.
The period of frequency of the ball is 2.56 s.
a. The centripetal acceleration is the acceleration of an object moving in a circular path towards the center of the circle. Therefore, the ball's acceleration is directed towards the center of the circle.
b. The tangential speed is the speed of an object moving in a circular path along the tangent to the circle at a given point. The tangential speed of the ball can be calculated using the formula v = ωr, where ω is the angular velocity and r is the radius of the circle.
The centripetal acceleration can also be expressed as a = ω²r. Solving for ω, we get ω = √(a/r) = √(12.0 m/s² / 3.0 m) = 2.45 rad/s. Therefore, the tangential speed of the ball is v = ωr = (2.45 rad/s) x (3.0 m) = 7.35 m/s.
c. The period of frequency is the time taken for one complete revolution or cycle. It can be calculated using the formula T = 2π/ω, where ω is the angular velocity. Substituting the value of ω calculated in part (b), we get T = 2π/2.45 rad/s = 2.56 s.
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Explain what major mistake producers made when editing the battle scenes for the movie Star Wars
Answers
Answer: Air
Explanation:
Roffns dn b bdd