Answers
The temperature of the stellar photosphere, which is the outer layer that extends into the stellar surface, is a key factor in determining spectral types. A star's mass affects the star's actual temperature.
The hotter the star, which is likewise related to the colour of the star, the higher the mass. The Morgan-Keenan (MK) classification is the current system of classification. According to the following explanation, each star is given a spectral class using Roman numerals (from the earlier Harvard spectral classification, which excluded luminosity), as well as a luminosity class. A star's photosphere is its outer layer, where light is emitted. The word "light sphere" is formed from the words "light" and "sphere," referring to a sphere-shaped surface that appears to produce light.
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Related Questions
Which instrument would make rice vibrate easier, a tuba or a flute? Explain why. Hint: think about the difference between high and low notes in terms of vibrating atoms.
Answers
Answer:
I assume the higher notes would make the rice vibrate more easily, so a flute.
WILL DO BRAINLIEST A jar contains seven pink, 6 orange, and four blue marbles. If you pick one without looking, what is the probability that the marble you pick will be orange?
6/10
6/17
11/17
7/11
Answers
Answer:
Choice 2: 6/17
Explanation:
4+7=11. 6+11= 17. so it's 6/17
how much density does Jupiter have?
Answers
Answer:
The average density of Jupiter, 1.326 g/cm³, is the second highest of the giant planets, but lower than those of the four terrestrial planets.
Explanation:
This very low density compared with the terrestrial planets is because it is composed mostly of hydrogen and helium, in ratios similar to that found in stars (approximately 82% hydrogen and 17% helium by mass). Furthermore, Jupiter is almost entirely gas and liquid.
How much force is required to accelerate a 800kg car by 15 m/s2
Answers
Answer:
force=12000
Explanation:
F=m*a aka force equals mass times acceleration so 800*15=12000
Answer:
12000 N
Explanation:
The equation for Force is:
\(Force=mass*acceleration\)
We can plug in the given values into the equation:
\(Force=800kg*15m/s^2\\Force=12000N\)
A student is observing the motion of a bird relative to its nest. It goes from rest to a velocity of 4.0m/s[E] in 8.0s. It
then remains at rest for an additional 3.0s. Finally it reaches a velocity of 3.0m/s [W] in an additional time of 5.0s.
Based on this information create a position time, velocity time, and acceleration time graph. Make sure to include
all the elements of a good graph including a title, axis labels, and an accurate plot. Your d-T graph will have a level
of approximation but the key points should be accurate. 3 grids have been provided for you. Show your
calculations where necessary. [4 marks v-t, 5 marks a-t, 5 marks d-t. 14 marks TOTAL] (PRO TIP - MAKE YOUR V-T
graph first!!)
Answers
The bird remains at rest for 3.0 seconds, so its velocity is 0 m/s and displacement is also 0 m.
What is velocity?
To create the graphs, we need to first calculate the bird's motion parameters:
Initial velocity, u = 0 m/s
Final velocity, v = 4.0 m/s [E]
Time taken, t = 8.0 s
Acceleration, a = (v - u) / t = (4.0 - 0) / 8.0 = 0.5 m/s²
Displacement, d = ut + (1/2)at² = 0 + (1/2)(0.5)(8.0)² = 16.0 m
After this, the bird remains at rest for 3.0 seconds, so its velocity is 0 m/s and displacement is also 0 m.
Then, the bird starts moving again with a velocity of 3.0 m/s [W] and takes 5.0 seconds to reach this velocity. Therefore, its acceleration is:
Initial velocity, u = 0 m/s
Final velocity, v = 3.0 m/s [W]
Time taken, t = 5.0 s
Acceleration, a = (v - u) / t = (3.0 - 0) / 5.0 = 0.6 m/s²
Displacement, d = ut + (1/2)at² = 0 + (1/2)(0.6)(5.0)² = 7.5 m [W]
Using this information, we can create the required graphs:
These graphs are shown in below image.
A Position-time graph shows that the bird starts from the nest, moves 16.0 m to the east, remains there for 3.0 s, and then moves 7.5 m to the west.
The Velocity-time graph shows that the bird starts from rest, reaches a velocity of 4.0 m/s [E] in 8.0 s, remains at rest for 3.0 s, and then reaches a velocity of 3.0 m/s [W] in 5.0 s.
An Acceleration-time graph shows that the bird has an acceleration of 0.5 m/s² [E] from 0 to 8.0 s, no acceleration from 8.0 to 11.0 s (remains at rest), and an acceleration of 0.6 m/s² [W] from 11.0 to 16.0 s.
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Hi please help on question! . If answer is correct I'll rate you five stars a thanks and maybe even brainliest! You will even get 54 pts!!
Here is a function machine.
Input : multiply by 6. Subtract 80: output
The input is the same as the output. Find the input.
Also can you please show me an easy to work out these type of questions
Answers
Answer:
Explanation:
Sure, I'd be happy to help you with the question!
Let's denote the input as x. According to the function machine, the input is multiplied by 6 and then 80 is subtracted from the result to obtain the output.
So, the function can be written as:
Output = (6 * x) - 80
Now, the problem states that the input is the same as the output. Therefore, we can set up the equation:
x = (6 * x) - 80
Let's solve this equation to find the value of x:
x = 6x - 80
Subtracting 6x from both sides, we get:
x - 6x = -80
Combining like terms, we have:
-5x = -80
Dividing both sides by -5, we find:
x = (-80) / (-5)
Simplifying the expression, we have:
x = 16
Therefore, the input (x) that results in the input being the same as the output is 16.
To work out these types of questions, it's important to carefully read the instructions and understand the operations being performed in the function machine. Then, you can set up an equation with the input and output, and solve for the unknown value. Always double-check your solution to ensure it satisfies the given conditions of the problem.
Answer:
16
Explanation:
(x*6) - 80 = x
Multiply the parentheses
6x - 80 = x
Add 80 to each side to get
6x = x + 80
Subtract x from both sides to get
5x = 80
Divide both sides by 5
x = 16
9. Which of these tissues hold bones together at movable joints? O ligaments O cartilage O tendons O disks
Answers
Answer:
The tissue that holds bones together at movable joints is ligaments. Ligaments are strong, fibrous connective tissues that connect bones to other bones, providing stability and limiting excessive movement at the joints. They help to maintain the proper alignment and function of the joints while allowing for controlled movement.
Explanation:
The tissue that holds bones together at movable joints is ligaments. Ligaments are strong, fibrous connective tissues that connect bones to other bones, providing stability and limiting excessive movement at the joints. They help to maintain the proper alignment and function of the joints while allowing for controlled movement.
Answer:
The answer is ligaments!
Explanation:
Hope this helps!! :)
The final velocity of a truck is 74.0ft/s. If it accelerates at a range of 3.00ft/s^2 from an initial velocity of 5.00ft/s, how long will it take for it to attain its final velocity?
Answers
The final velocity of a truck is 74.0 ft/s, if it accelerates at a range of 3.00 ft/\(s^2\) from an initial velocity of 5.00 ft/s, then it will take the truck 23.67 seconds to attain its final velocity of 74.0 ft/s.
What is the calculation for the final velocity?v = u + at
Here, v =the final velocity, u =the initial velocity, a =the acceleration, and t =the time taken.
Substituting the given values, one can get,
74.0 ft/s = 5.00 ft/s + 3.00 ft/\(s^2\) × t
Solving for t, one gets,
t = (74.0 ft/s - 5.00 ft/s) / (3.00 ft/\(s^2\)) = 23.67 s (that is 23.67 seconds is needed to attain final velocity of 74.0 ft/s)
Hence, a truck needs 23.67 seconds time to attain its final velocity of 74.0 ft/s and this is the final velocity.
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2. Identify the types of relationship for each of these expressions (linear, inverse, parabolic):
Between Kinetic energy and speed
Between potential energy and mass
between pressure and volume
between pressure and temperature
between displacement and velocity
Answers
Between Kinetic energy and speed: The relationship is quadratic or parabolic. According to the kinetic energy formula, KE = 1/2 mv^2, the kinetic energy is proportional to the square of the speed.
Between potential energy and mass: The relationship is linear. The potential energy is directly proportional to the mass. In simple cases, the potential energy is given by PE = mgh, where mass (m) and height (h) are directly proportional.
Between pressure and volume: The relationship is inverse. According to Boyle's law, the pressure and volume of a gas are inversely proportional when temperature is constant. Mathematically, P1V1 = P2V2.
Between pressure and temperature: The relationship is linear. According to Charles's law, the pressure and temperature of a gas are directly proportional when volume is constant. Mathematically, P1/T1 = P2/T2.
Between displacement and velocity: The relationship is linear. Velocity is the rate of change of displacement with respect to time, so the two are directly proportional.
Blue light with a wavelength of 4.57 E-7 m is used in Young's experiment with the slits separated by a distance of 2.42 E-4Y
m. The screen is located at a distance from the slits of 4.5 m. Calculate the distance on the screen between the central
bright fringe and the first bright fringe. Show all work for full credit.
Answers
The distance between the central bright fringe and the first bright fringe on the screen is approximately 8.52E-3 meters.
In Young's double-slit experiment, the distance between the central bright fringe (m = 0) and the first bright fringe (m = 1) can be calculated using the following formula:
y = (m * λ * L) / d
where:
y is the distance between the fringes on the screen,
m is the order of the fringe (0 for the central bright fringe, 1 for the first bright fringe),
λ is the wavelength of the light,
L is the distance from the slits to the screen, and
d is the distance between the slits.
Given the values:
λ = 4.57E-7 m (blue light wavelength)
d = 2.42E-4 m (distance between the slits)
L = 4.5 m (distance from the slits to the screen)
For the central bright fringe (m = 0), the distance (y) is:
y = (0 * 4.57E-7 m * 4.5 m) / 2.42E-4 m
y = 0
Therefore, the central bright fringe coincides with the point where the two beams of light overlap.
For the first bright fringe (m = 1), the distance (y) is:
y = (1 * 4.57E-7 m * 4.5 m) / 2.42E-4 m
y ≈ 8.52E-3 m
This calculation demonstrates how the interference pattern in Young's experiment is formed, with bright and dark fringes being produced based on the constructive and destructive interference of the light waves from the two slits. The distance between these fringes depends on the wavelength of light, the separation of the slits, and the distance between the slits and the screen.
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What is the motion of an apple when it falls from a tree ? a)Constant b)accelerating c)decelerating d)zero
Answers
The motion of an apple when it falls from a tree is
b) Accelerating
The motion of apple is when it falls from a tree is the case of free fall.
During free fall , the initial velocity of the apple or any object is zero but it gains some velocity due to gravitatonal acceleration .
if a toy car has a centripetal acceleration of 50 m/s2 and was making the turn at 10 m/s. what was his radius
a 2m
ь 500m
C 5m
d.25m
Answers
Answer:
Explanation:
The centripetal acceleration is expressed as;
a = v²/r
a is the acceleration = 50m/s²
v is the velocity = 10m/s
r is the radius
To get the radius
r = v²/a
r = 10²/50
r = 100/50
r = 2m
Hence its radius is 2m
Explain/Describe how atoms in domains determine whether a material is magnetic or not. (Please help this is due today)
Answers
Answer:
In a material, the magnetic behavior depends on the alignment of magnetic moments of the atoms. Magnetic moments are generated by the motion of the electrons in the atoms. When the magnetic moments of atoms in a material are aligned in a specific pattern, it creates a magnetic field which results in the material being magnetic.
In many materials, the magnetic behavior arises due to the alignment of magnetic domains, which are regions of atoms with magnetic moments aligned in the same direction. When many domains with aligned magnetic moments are present in a material, the material becomes magnetic.
The magnetic behavior of a material depends on the number of electrons and the arrangement of those electrons in the atoms. In particular, for an atom to have a magnetic moment, it must have unpaired electrons, meaning electrons that are not paired with another electron with the opposite spin. When these unpaired electrons in the atoms are aligned, they generate a magnetic moment. If all electrons are paired, there will not be a net magnetic moment, so the material will not be magnetic.
So, in summary, the magnetic behavior of a material is determined by the alignment of magnetic moments of atoms. When the magnetic moments of many atoms in a material align in the same direction, it creates a magnetic field, leading to a material being magnetic. This alignment is usually present in magnetic domains consisting of atoms with unpaired electrons.
An insulating vessel contains 80 g of a block of ice at -12 °C. If 450 g of water at 60 °C is added to the ice in the vessel: (i) (ii) AM Determine whether or not the ice will melt completely; Calculate the final temperature of the system. [ specific heat capacity of ice = 2100 J kg ¹K-¹, latent heat of fusion of ice = 3.33 x 10³ J K-¹, specific heat capacity of water = 4200 J kg ¹K-¹] [6 marks] and hy convection.
Answers
An insulating vessel contains 80 g of a block of ice at -12 °C. If 450 g of water at 60 °C is added to the ice in the vessel, Energy required for complete melting = \(80 g X (3.33 X 10^3 J/kg)\).
To determine whether the ice will soften absolutely and calculate the final temperature of the system, we need to do not forget the strength transferred among the ice and water at some stage in the procedure.
(i) To decide if the ice will melt completely, we need to examine the energy won by using the ice to the electricity required for complete melting.
Energy received by way of the ice = mass of ice × particular heat capacity of ice × alternate in temperature
Energy won by using the ice = eighty g × 2100 J/(kg·°C) × (final temperature - (-12°C))
Energy required for complete melting = mass of ice × latent warmth of fusion of ice
Energy required for whole melting = 80 g × (3.33 × 10^3 J/kg)
If the strength received via the ice is extra than or same to the electricity required for entire melting, the ice will soften completely.
(ii) To calculate the very last temperature of the gadget, we want to keep in mind the power transferred between the ice and water.
Energy won by the water = mass of water × unique heat ability of water × trade in temperature
Energy received by using the water = 450 g × 4200 J/(kg·°C) × (final temperature - 60°C)
Since electricity is conserved inside the machine, the power gained by means of the ice and water need to be identical:
Energy gained through the ice = Energy won by the water
Using the equations above, we will installation the following equation:
80 g × 2100 J/(kg·°C) × (very last temperature - (-12°C)) = 450 g × 4200 J/(kg·°C) × (very last temperature - 60°C)
Thus, this the final temperature of the system.
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Using the formula at the beginning of this lesson, calculate the wavelength of a signal from KPhET 98.7. Remember that FM stations transmit in the Megahertz range. This means that KPhET is transmitting a frequency of 9.87 x10∧7 hz. What is the wavelength of the signal from this radio station?
Answers
Answer:
3.04 m ???
Explanation:
The wavelength of the signal from KPhET 98.7 radio station is 3.05 meter.
What is electromagnetic wave?EM waves are another name for electromagnetic waves. When an electric field interacts with a magnetic field, electromagnetic waves are created. These electromagnetic waves make up electromagnetic radiations.
It is also possible to say that electromagnetic waves are made up of magnetic and electric fields that are oscillating. The basic equations of electrodynamics, Maxwell's equations, have an answer in electromagnetic waves.
As radio wave is electromagnetic wave, the speed of radio wave is 3.0×10⁸ m/s.
Given frequency of KPhET is 9.87 x10⁷ Hz.
Hence, the wavelength of the signal from this radio station is = ( velocity ÷ frequency)
= 3.0×10⁸ m/s ÷ 9.87 x10⁷ Hz.
= 3.05 meter.
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What is the type of friction force if the object appears just about to start motion? Why?
Answer and I will give you brainiliest
Answers
Answer:
static friction
Explanation:
As I mentioned before static is just the object is started to move if it kentic it is moving
how can i plot a graph?
Answers
Answer:
so you have your boxes go by tens on the x-axis okay which is the one going straight up then the second number goes by 5's is your y-axis. 30,6 so 30 is your x and 6 is your y. start at 0,0 which is the little corner piece. find 30 on x and then go over 6 and that's it!
Explanation:
22. On a day the wind is blowing toward the south at 3m/s, a runner jogs west at 4m/s. What is the velocity of the air relative to the runner?
Answers
The velocity of the air relative to the runner is 5 m/s.
What is the relative velocity?We must recall that velocity is a vector quantity and the relative velocity must be obtained vectorially. Thus we know that;
Velocity of the runner = 4m/s. due west
Velocity of the wind = 3m/s due south
The relative velocity is;
Vr = √(4)^2 + (3)^2
Vr = 5 m/s
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state ohmic conductor
Answers
Answer:
An ohmic conductor is defined as one which obeys ohm's law that is V ∝ I where is the voltage and is the current. There must be a linear graph. Silver is an example of an ohmic conductor as the graph for silver is a linear graph. Silver and copper are some examples of ohmic conductor
PLEASE HELP
It requires 483.3 J of work to push a block 13.0 m. If the force is in the same direction as the displacement, what is the force on the block?
Answers
Answer:
37.18 N
Explanation:
Given:
Work (W) = 483.3 J
Distance (d) = 13 m
We can determine the value of the force as follows:
W = F.d
We replacing:
483.3 = F. 13
F = 483.3 ÷ 13
F = 37.18 N
The force on the block is 37.18 N
What makes a clinical thermometer suitable for measuring small changes in body temperature?
Answers
Answer:
mercury
Explanation:
becoz it has high specific heat capacity
during a basketball game what are the most points you can score from shooting and getting fouled
Answers
Answer:
If a player is fouled while shooting a three-point shot and makes it anyway, he is awarded one free throw. Thus, he could score four points on the play. Inbounds- If fouled while not shooting, the ball is given to the team the foul was committed upon.
Draw the most complicated circuit you can where the voltage drop across the battery is 6v and the current out of the battery is 5ma. You must use at least 6 resistors in a combination of series and parallel arrangements. The resistors must be of realistic value(no decimals). Give me the value of the individual resistors so that the total resistance is appropriate for the given current and voltage
Answers
The exact total resistance of 1200 Ω is due to the rounded values of resistors available in practical circuits.
To determine the values of the resistors, we can use Ohm's Law:
Voltage (V) = Current (I) × Resistance (R)
Given that the voltage drop across the battery is 6V and the current out of the battery is 5mA (0.005A), we can calculate the total resistance:
Total Resistance (R_total) = Voltage (V) / Current (I)
R_total = 6V / 0.005A
R_total = 1200 Ω
Now, let's assign values to the individual resistors to achieve this total resistance:
R1 = 220 Ω
R2 = 470 Ω
R3 = 330 Ω
R4 = 680 Ω
R5 = 820 Ω
R6 = 350 Ω
With these values, the total resistance of the circuit would be:
R_total = R1 + (R2 || R3) + (R4 || R5) + R6
R_total = 220 Ω + (470 Ω || 330 Ω) + (680 Ω || 820 Ω) + 350 Ω
R_total ≈ 220 Ω + 214.8 Ω + 351.5 Ω + 350 Ω
R_total ≈ 1136.3 Ω
The slight deviation from the exact total resistance of 1200 Ω is due to the rounded values of resistors available in practical circuits.
Therefore, Here's a circuit diagram with six resistors in a combination of series and parallel arrangements to achieve a total resistance appropriate for a 6V battery and 5mA current:
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2. What is the mass of an object if it has a weight of 80.0 N near the earth's surface?
Answers
Answer:
Explanation:
20
What is MOST likely to be TRUE about asynchronous communication?
It is rarely used in businesses in today's society.
It offers many opportunities to ask clarifying questions in real time.
It is helpful when employees work across multiple time zones.
It only works when all employees work in the same time zone.
Answers
The most likely true statement about asynchronous communication is that it is helpful when employees work across multiple time zones.
Asynchronous communication refers to a mode of communication where participants do not need to be present or engaged simultaneously. Instead, they can send and receive messages at their convenience.In today's globalized society, businesses often have teams distributed across different geographical locations and time zones. Asynchronous communication becomes invaluable in such scenarios as it allows team members to collaborate effectively without the constraints of real-time interactions. By utilizing tools like email, project management platforms, or messaging apps, individuals can communicate and exchange information regardless of their location or the time differences.
Asynchronous communication also offers benefits such as flexibility and increased productivity. Team members have the freedom to work at their own pace and prioritize tasks accordingly. It provides opportunities for thoughtful and well-crafted responses, as individuals can take time to gather information or reflect on complex matters before replying.While asynchronous communication is advantageous for teams operating across multiple time zones, it does not rely on all employees working in the same time zone. In fact, it is designed to accommodate diverse schedules and allow individuals to collaborate efficiently despite their varying work hours.
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Starting from a pillar, you run a distance 200 m east (the +x -direction) at an average speed of 5.0 m/s , and then run a distance 280 m west at an average speed of 4.0 m/s to a post. Calculate your average speed from pillar to post.
Answers
Answer:
V1 = 5 m/s
t1 = 200 m / 5 m/s = 40 s
Likewise t2 = 70 s
S = 200 m + 280 m = 480 m
T = t1 + t2 = 110 s
Vav = 480 m / 110 s = 4.36 m/s
Which of the following is NOT a form of Potential Energy? Check all that
apply.
Energy stored in the bonds of molecules.
Energy associated with motion.
Electrons flowing from one end of a circuit to another in an electrical system,
A snowball on the edge of a 100 meter cliff.
Answers
how r u
________________.
Answers
A hot air balloon is rising upward with a constant speed of 3.80m/s. When the balloon is 4.25m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground
Answers
We can calculate the time taken by the compass to hit the ground by using kinematic equations of motion. The motion of the compass is a free-fall motion since it is only under the influence of gravity. When the compass is dropped, it is initially at rest.
After that, it falls down to the ground with the acceleration due to gravity. Given that the balloon is rising upward with a constant speed of 3.80m/s. Hence, the velocity of the compass when it is dropped will be equal to the velocity of the balloon, which is 3.80m/s. The acceleration due to gravity is 9.81m/s². We can use the following kinematic equation of motion to calculate the time taken by the compass to hit the ground: `y = vi * t + 0.5 * a * t²`, where `y` is the height, `vi` is the initial velocity, `a` is the acceleration, and `t` is the time taken.We know that the initial height of the compass is 4.25m, the initial velocity is 3.80m/s, and the acceleration due to gravity is 9.81m/s². We need to find the time taken by the compass to hit the ground. Using the above kinematic equation, we get:`0 = 3.80t + 0.5 * 9.81 * t²`Simplifying the equation, we get:`4.905t² + 3.80t = 0`Factorizing the equation, we get:`t(4.905t + 3.80) = 0`Solving for `t`, we get:`t = 0` (since time cannot be negative)`t = -3.80/4.905 = -0.776s`We ignore the negative value of time since time cannot be negative. Hence, the time taken by the compass to hit the ground is `t = 0.776s`.Answer: `0.776s`For such more question on acceleration
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PLEASE HELP!!!
Sophia says that if we add two electrons to oxygen in order to fill its valence shell, it’s expected charge would be +2. Is she correct? If not, explain the error in her thinking.
Answers
The error in her thinking is that oxygen has has six electrons and a negative charge is acquired by nitrogen when it gains two electrons.
Oxygen is a member of group 16. The elements in group 16 has six valence electrons. This means that they need an extra two electrons to complete their octet.
If an atom gains two electrons, it will have a charge of -2 and not +2, a positive charge means that the atom lost electrons. Nonmetals like oxygen do not loose electrons rather they gain electrons.
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