The correct answer is option D.2 years
What is Kepler's third law of planetary motion?According to Kepler's Third Law of Planetary Motion, T² is proportional to r³, where T is the period of revolution of the planet and r is the distance between the planet and the star.
In order to solve for T,
AU = 1
Astronomical Unit = the average distance between the Earth and the Sun = 149.6 million kilometres
Therefore, the planet is orbiting at a distance of 149.6 million kilometres from the star.
Substituting the values of r and solving for
T².T² ∝ r³T² ∝ (149.6)³T²
= (149.6)³T²
= 3.522 x 10¹²T
= √3.522 x 10^¹²T
= 1.87 x 10⁶ seconds
T = 31,100 minutes
T = 518 hours
T = 21.6 days
T = 2 years
Therefore, the orbital period of the planet with twice the mass of Earth orbiting at a distance of 1 AU from a star with the same mass as the Sun is 2 years.
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Three forces act on an object at the same time. F1 = 100. N at 30.0degrees north of east, F2 = 200. N at 45.0degrees north of west, and F3 = 100. N at 30.0degrees east of south. What are the magnitudes and direction of both the resultant force and equilibrant force?
200N towards south are the magnitudes and direction of both the resultant force and equilibrant force.
Define force
A force is an effect that changes, or accelerates, the motion of a mass-containing object. It is a vector quantity since it can be a push or a pull and always has magnitude and direction.
The entire force operating on the item or body, combined with the body's direction, is referred to as the resultant force. When the object is stationary or moving at the same speed as the object, the resultant force is zero.
Between F1 and F2 , resultant force will be 100N towards 45.0degrees north of west,
The total resultant force will be 100+100 i.e. 200N towards south.
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Can someone help me? Put them in order. Thank you!
Answer:
2-3-1-4
Explanation:
First you will need an energy source so 2 is the first step.
Then the lead and lead oxide are reformed during re-charge so 3 is the second step.
The battery is back in operation when Lead dissolves in acid so 1 is the third step.
Battery produces electrons so 4 is the final step.
what forces must a tire deliver to the surfaces on which it travels?
When a tire travels over a surface, it must deliver three forces to ensure proper movement. These three forces are the longitudinal force, the lateral force, and the vertical force. These forces are essential for a tire to maintain good traction and control while traveling on the surface.
The Longitudinal force refers to the force that is delivered parallel to the direction of the vehicle's movement. The amount of longitudinal force that a tire can deliver will determine the amount of torque that is transferred from the vehicle to the surface beneath it.
This force is required to ensure that the vehicle moves forward or backward in the desired direction. The Lateral force refers to the force that is delivered perpendicular to the direction of the vehicle's movement. This force is required to ensure that the vehicle can maintain its course on the road or surface on which it's traveling. The lateral force must be controlled to ensure the vehicle stays on its desired path.
The vertical force refers to the force that is delivered downward on the surface. This force is required to maintain the tire's contact with the road or surface beneath it. The amount of vertical force delivered must be sufficient to support the vehicle's weight. This force is critical in preventing the tire from losing grip while moving over an obstacle or when the vehicle is taking turns.
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What happened when red light and cyan light combine, what colour of light results?
Answer:
I'm pretty sure it makes a white light... i could be wrong and sorry if I am
what is the far point of a person whose eyes have a relaxed power of 52.7 d ? assume the lens-to-retina distance is 2.00 cm .
The far point of this person is approximately 0.37 meters, or 37 centimeters. This means that objects farther than 37 centimeters will be clearly seen by the individual when their eye is in a relaxed state.
The far point refers to the maximum distance at which an object can be clearly seen by an individual's eye when it is in a relaxed state. The relaxed power of an eye is its ability to focus on distant objects without any strain, measured in diopters (D).
In this case, a person's eye has a relaxed power of 52.7 D, and the lens-to-retina distance is given as 2.00 cm. To calculate the far point, we can use the formula:
Far point = 1 / (Relaxed power - Lens-to-retina distance)
First, we need to convert the lens-to-retina distance into diopters:
Lens-to-retina distance (in diopters) = 1 / 2.00 cm = 1 / 0.02 m = 50 D
Now, we can calculate the far point:
Far point = 1 / (52.7 D - 50 D) = 1 / 2.7 D ≈ 0.37 m
So, the far point of this person is approximately 0.37 meters, or 37 centimeters. This means that objects farther than 37 centimeters will be clearly seen by the individual when their eye is in a relaxed state.
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a mirror produces an image that is inverted and twice as tall as the object. if the image is 60 cm from the mirror, what is the radius of curvature of the mirror?
The radius of curvature of the mirror is 40 cm.
In this case, the mirror produces an inverted image, which means it is a concave mirror. We are given the object distance (u), image distance (v), and magnification (M). The magnification is -2, as the image is twice as tall and inverted. The mirror formula for concave mirrors is:
1/f = 1/u + 1/v
We can find the focal length (f) using the magnification formula:
M = -v/u
By solving for v, we get:
v = -2u
Now, we can substitute this value back into the mirror formula:
1/f = 1/u - 1/(2u)
Since the image is 60 cm from the mirror:
1/f = 1/60 - 1/(2 * 60)
1/f = 1/60 - 1/120
1/f = 2/120 - 1/120
1/f = 1/120
Thus, the focal length (f) is 60 cm / 2 = 30 cm
The radius of curvature (R) is twice the focal length:
R = 2 * f = 2 * 30 = 40 cm
Summary: The radius of curvature of the mirror is 40 cm.
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Please Its urgent I need your HELP!!!!!!!!!!!!!!!!!!!!!!!
Raising the temperature results in the radiator giving off photons of high-energy ultraviolet light. As heat is added, the radiator emits photons across a wide range of visible-light frequencies
What 4 pieces of information should be included any time you give a written
description of motion?
Answer:
In physics, motion is the phenomenon in which an object changes its position over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time. ... One can also speak of motion of images, shapes, and boundaries.
Explanation:
A simple motor consists of a wire loop that spins in a uniform magnetic field. As the the loop spins, the angle between its pivot axis and the force on the loop changes. At what angle does the torque on the loop change direction?.
At zero degree the torque on the loop change direction as a record of the loop spins in a uniform magnetic field.
What is torque and how come the angle 0 degree for the loop to change the direction?Simply we can say torque means rotational force because it helps to rotate objects.But actually torque is the product of force and radius distance.The unit of torque is N/m.The initial maximum flux is passing across the loop, when rotates flux decreases.when becomes parallel to the magnetic field the flux becomes zero.To know more about torque visit:
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A 0.05 kg ball moving at 25 m/s
Kinetic energy of the ball is 31.25 J.
Mass of the ball, m = 0.05 kg
Velocity of the ball, v = 25 m/s
Kinetic energy of the ball,
KE = 1/2 mv²
KE = 0.05 x 25²
KE = 31.25 J
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Your question was incomplete, but most probably your question will be:
A 0.05 kg is ball moving at 25 m/s. Calculate its kinetic energy.
what effect will increasing the pore size of the filter have on the filtration rate
Increasing filter pore size increases filtration rate due to less resistance.
What is the effect of increasing filter pore size?Increasing the pore size of a filter will generally result in an increase in the filtration pore .
Here are the steps to explain this:
When a filter has smaller pores, it restricts the flow of fluid through the filter. This is because the smaller pores create more resistance to the flow of fluid.Conversely, when the pore size is increased, the filter allows more fluid to flow through because there is less resistance to the flow.Therefore, increasing the pore size of a filter will increase the rate at which fluid can pass through it.It's important to note that increasing pore size may also result in a decrease in the filter's ability to capture smaller particles, since larger pores will allow more particles to pass through. So, increasing the pore size may result in a trade-off between filtration rate and particle capture efficiency.
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Which of the following is the best description of the events of anaphase I?Homologous chromosomes randomly separate and migrate to opposite poles.
Homologous chromosomes arbitrarily divide and move to opposing poles throughout Ana-phase I of meiosis, which is the best way to describe what happens.
What do the Earth's poles do?Either of the two sites on Earth in which the rotation axis crosses the surface is referred to as a geographical pole. "Poles" are the parts of magnets with the strongest magnetic fields. Numerous magnet poles will either repel, pull, or attract one another.
Which pole is stronger?A magnet's south and north poles are equally powerful. The capacity of a magnet to generate a magnetic flux and to pull or push other magnetically or superconductors is referred to as its strength. The power of a magnet is not reliant on its magnetic field.
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a ten-loop coil having an area of 0.23 m2 and a very large resistance is in a 0.047-t uniform magnetic field oriented so that the maximum flux goes through the coil. the coil is then rotated, so the flux goes to zero in 0.34 s. what is the magnitude of the emf induced in the coil during the 0.34 s?
The magnitude of electromotive force is 0.32 volts.
We need to know about the electromotive force of induction to solve this problem. The emf induction appears when there is any change in magnetic flux. The magnitude of emf can be determined by
ε = N dΦ / dt
where N is coil turns, ε is electromotive force, dΦ is change in magnetic flux and dt is time interval.
From the question above, the parameters given are
B = 0.047 T
dt = 0.34 s
N = 10
A = 0.23 m²
Find the change in magnetic flux
dΦ = (B . A)
dΦ = ( 0.047 . 0.23 )
dΦ = 0.01081 Tm²
By substituting the given parameters, we can calculate electromotive force
ε = N . dΦ / dt
ε = 10 . 0.01081 / 0.34
ε = 0.32 volt
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Samuel pushes against a door with a force of 10N, but the door doesn't move. Has Samuel done work on the door?
No, Samuel hasn't done work, Since the door doesn't move.
What is work done?Work is said to be done when an applied force moves an object over a given distance.
W = Fd
where;
W is work doneF is the applied forced is the distanceSince the door doesn't move, we can conclude that Samuel hasn't done work.
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A.
B.
C.
D.
Please help
Answer:
B
Explanation:
From the question above, you can see in the picture, the first,second ,third models have respectively 4 e in second circle (Carbon), 5 e in second circle(Nitrogen) , 6e in second circle(Oxygen) . So, to maintain the serial, the next model must have 7 e in second circle of the atom which is option B : Fluorine
A sonar emits a sound signal of frequency 40000Hz, towards the bottom of the sea.
This signal is reflected on the body of a submarine after a delay of 0.3 seconds.
Given: Speed of sound in water is 1500 m/s.
Calculate the period of this wave.
Answer:
0.000025s
Explanation:
Period it’s. : T(s)= 1/f(Hz)=1/40000Hz=0.000025s
Monitoring your grades will help you pinpoint your academic weaknesses. true or false.
Answer:
A:True It is good too monitor your grades because you can keep track of your grades and pinpoint your weaknesses.
Explanation:
Answer:
True, monitoring your grades can help you understand your weaknesses as a student.
What is the IMA of an inclined plane that is 4.0 meters in length and 0.8 m high?
A. 0.2
B. 1
C. 3.2
D. 5
The Inclined Mechanical Advantage of the given inclined plane is D.5. This means that the effort required to move an object up the inclined plane is 5 times less than lifting it directly vertically.
The Inclined Mechanical Advantage (IMA) of an inclined plane can be calculated using the formula IMA = length of the inclined plane (L) / vertical height (H).
In this case, the length of the inclined plane (L) is 4.0 meters, and the vertical height (H) is 0.8 meters. Plugging these values into the formula:
IMA = L / H
IMA = 4.0 meters / 0.8 meters
IMA = 5
Hence, the correct answer is D. Inclined planes are essential tools in various applications as they help reduce the force needed to move objects, making tasks more manageable and efficient.
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kg. m
A baseball player hits a 0.15 kg baseball that is initially at rest, changing its momentum by 11
S
What is the final speed of the baseball?
Round answer to two significant digits.
Answer: 73 m/s
Explanation:
Answer: 73 M/S
Explanation:Did the work
will violet light of wavelength 400 nm cause ejection of electrons in k ?
Yes, violet light of wavelength 400 nm can cause the ejection of electrons in K. This process is known as the photoelectric effect.
Where photons of light can interact with electrons in a material and transfer their energy to the electrons. If the energy of the photon is greater than the binding energy of the electron to the material, the electron can be ejected from the material. In terms of the specific energy required to eject electrons from the K shell of an atom, it depends on the atomic structure of the material.
It is possible for violet light of wavelength 400 nm to cause ejection of electrons in K through the photoelectric effect.
The energy of a photon is proportional to its frequency and inversely proportional to its wavelength. Since violet light has a shorter wavelength than other colors of light, it has a higher frequency and energy.
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Not all metals have the same current for a given electric potential
The statement 'Not all metals have the same current for a given electric potential' is TRUE. It is conductivity.
What is conductivity?All the metals are able to conduct electric currents, but some metals have a higher conductivity.
Metals are able to conduct electric currents due to the free movement of negatively charged particles i.e., electrons, across the conductor.
The band theory of metals states that metals can conduct electrons (e-) in an electric current by means of the help of the e- valence.
The density of free electrons in metals is around 10^28 m-3, which indicates the number of states at a particular energy level that negative e- can occupy.
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What is a simple definition of potential energy?
Potential energy is the energy an object possesses due to its position or state.
It can be thought of as stored energy that can be released or converted into other forms of energy, such as kinetic energy (energy of motion).
For example, a book sitting on a shelf has potential energy because it has the potential to fall and convert that potential energy into kinetic energy (motion). Similarly, a charged battery has potential energy because it has the potential to release electricity.
Another example of potential energy is a charged battery. A charged battery has the potential to release electricity, which is a form of energy. The more charge a battery has, the more potential energy it holds. When the battery is used to power a device, the potential energy is converted into electrical energy.
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. A 225-kg crate is pushed horizontally with a force of 710 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate
The acceleration of the crate is 1.196 m/s².
What is acceleration?This can be defined as the rate of change of velocity.
To calculate the acceleration of the crate, we use the formula below.
Formula:
a = (F-mgμ)/m................. Equation 1Where:
a = acceleration of the cratem = mass of the crateF = Force applied to the crateμ = Coefficient of frictionFrom the question,
Given:
m = 225 kgF = 710 Ng = 9.8 m/s²μ = 0.20Substitute the values above into equation 1
a = [710-(225×9.8×0.20)]/225a = (710-441)/225a = 269/225a = 1.196 m/s²Hence, The acceleration of the crate is 1.196 m/s²
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What is matter meaning
Answer:
Meaning of Matter
Explanation:
Matter, material substance that constitutes the observable universe and, together with energy, forms the basis of all objective phenomena. The three most familiar forms, or states, of matter are solid, liquid, and gas. Heating and cooling a substance may change it from one state to another.
True or False. The entire world is
ultimately made up of three kinds of
particles: protons, neutrons, and
electrons.
Answer:
Explanation:
False.
There are also fields -- gravitational, electromagnetic...
A wave of green light has a wavelength of 505 nm. How much energy does this wave have? Be sure to show your work! (remember that 1 nm = 1â10-9 m.)
To calculate the energy of a wave of green light with a wavelength of 505 nm, we can use the equation\(E = hc/λ\\\), where E represents energy, h is Planck's constant, c is the speed of light, and λ is the wavelength.
According to the equation \(E = hc/λ\\\), the energy of a wave is inversely proportional to its wavelength. As the wavelength decreases, the energy of the wave increases.
To calculate the energy of the green light wave with a wavelength of 505 nm, we need to convert the wavelength to meters. Using the conversion factor \(1 nm = 1 × 10^(-9)\)m, we can express the wavelength as \(505 nm × (1 × 10^(-9) m/1 nm) = 505 × 10^(-9) m.\)
Next, we substitute the values into the equation E = hc/λ. Planck's constant, h, is approximately 6.626 × 10^(-34) J·s, and the speed of light, c, is approximately 3.00 × 10^8 m/s.
\(E = (6.626 × 10^(-34) J·s × 3.00 × 10^8 m/s) / (505 × 10^(-9) m) = 3.941 × 10^(-19) J.\)
Therefore, the wave of green light with a wavelength of 505 nm has an energy of approximately \(3.941 × 10^(-19) joules.\)
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if the mass of object is 135 kg then its weight on earth will be?
Answer:
1323
Explanation:
we know ,
weight = m*g
= 135 * 9.8 ( acceleration due to gravity in earth is 9.8 m/S2)
= 1323 N
Someone help me with this
Answer:
I can't read the questions they aren't in the photo
Which of the following is the best example of work being done on an object? *
-holding a 50kg weight
-lifting a bag of groceries from the floor
-holding down a compressed spring
-pushing a boulder that will not move
Answer:
lifting a bag of groceries.
work is force by distance, if there is no movement there is no work done
A3.0-kg book is held at rest against a wall by a 120 N push force. The coefficient of static friction is 0.55 and the coefficient of kinetic friction is 0.20. The magnitude of the friction force of the wall on the book is Use g = 10 m/s2 120 N 3 kg 0 66 N 0 24 N 042 N 0 120 N 0 30 N
The magnitude of the friction force of the wall on the 3.0-kg book is 66 N.
To find the magnitude of the friction force of the wall on the 3.0-kg book, we need to determine the normal force and then use the coefficient of static friction to calculate the friction force.
1. Calculate the weight of the book (W = mg).
W = (3 kg)(10 m/s²) = 30 N
2. The push force against the wall (120 N) acts as the normal force (N) since the book is at rest.
N = 120 N
3. Calculate the static friction force (Fs) using the coefficient of static friction (μs) and the normal force.
Fs = μs * N
Fs = (0.55)(120 N)
Fs = 66 N
The magnitude of the friction force of the wall on the 3.0-kg book is 66 N.
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