What is the hottest temperature a star need to be to become a star?
Answers
To first become a star, your core must cross a critical temperature threshold: ~4,000,000 K.
Related Questions
Using the Skygazer's Almanac for 2022 at 40 degrees.
What day will Venus and Saturn be in opposite parts of the sky
this year?
Answers
According to the Skygazer's Almanac for 2022 at 40 degrees, Venus and Saturn will be in opposite parts of the sky on December 17, 2022.
The Skygazer's Almanac provides astronomical information for a specific location and year. In this case, at a latitude of 40 degrees, the almanac indicates that Venus and Saturn will be in opposite parts of the sky on December 17, 2022. This means that Venus and Saturn will appear at opposite sides of the celestial sphere as observed from Earth. However, it's important to note that the almanac's predictions are approximate and can be influenced by various factors, including atmospheric conditions and the observer's specific location. To obtain the most accurate and up-to-date information, it is recommended to consult more recent astronomical sources or use specialized software that can provide precise positions and dates for celestial events.
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The forearm has a total mass of 1.7kg. What is the moment, about the elbow joint, of the weight of the forearm
Answers
Help!! Or I get an F!!!
What planet could you jump the highest?
Answers
Answer:
Is Mercury an answer on your thing?
Explanation:
Mercury has the least amount of gravity, so therefore you can jump the highest on Mercury.
Answer:
Jupiter
Explanation:
Jupiter has more than 300 time the mass as earth. so, it's gravitational pull is stronger.
Hopefully this helps
Which statements best describe magnetic fields? Check all that apply.
O A magnetic field is a region where a magnetic force is exerted on certain objects.
O A magnetic field behaves like a force vector.
O Magnetic field lines are strongest around the middle of the magnet.
O Magnetic field lines form closed loops that spread out of the north end of a magnet.
O Magnetic field lines form closed loops that spread out of the south end of a magnet.
Answers
O.A magnetic field is a region where a magnetic force is exerted on certain objects.
O. A magnetic field behaves like a force vector.
O.Magnetic field lines form closed loops that spread out of the north end of a magnet.
Explanation:
1,2, and 4
Answer:
a,b,d
Explanation:
i took the test
A 25.0 kg door is 0.925 m wide. A customer
pushes it perpendicular to its face with a 19.2
N force, and creates an angular acceleration
of 1.84 rad/s2. At what distance from the axis
was the force applied?
[?] m
Hint: Remember, the moment of inertia for a panel
rotating about its end is I = mr².
Answers
The distance from the axis of the force applied is 2.05 m.
What is the distance from the axis of the force applied?The distance from the axis of the force applied is calculated as follows;
The formula for torque;
τ = Fr
where;
F is the applied forcer is the distance from the axis of the force appliedAnother formula for torque is given as;
τ = Iα
where;
I is the moment of inertia of the doorα is the angular acceleration;τ = (mr²)α
τ = (25 kg x (0.925 m)²) x (1.84 rad/s²)
τ = 39.36 Nm
The distance is calculated as;
r = τ/F
r = ( 39.36 Nm ) / (19.2 N)
r = 2.05 m
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How does the distance between consecutive bright fringes depend on the wavelength of the light? a. The spacing of the fringes does not change when the wavelength changes. b. The fringes get closer together as the wavelength increases. c. The fringes get farther apart as wavelength increases.
Answers
The distance between consecutive bright fringes in interference patterns is directly related to the wavelength of the light used.
This relationship is given by the equation dλ = mλ, where d is the distance between the fringes, λ is the wavelength of the light, and m is the order of the fringe. From this equation, we can see that the distance between the fringes increases with an increase in the wavelength of the light used. Therefore, the correct answer is option c - the fringes get farther apart as wavelength increases. This is because when the wavelength of light is longer, it takes more time for the waves to meet each other and interfere constructively, resulting in a wider spacing between the fringes. Understanding this relationship between the distance between fringes and the wavelength of the light is crucial in interpreting interference patterns and can help in determining the properties of light sources.
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3. According to Newton's First Law, unless acted upon by an unbalanced force, an object at rest will
Answers
Answer:
An object at rest remains at rest
Explanation:
An object at rest stays at rest and an object in motion stays in motion with the same speed
4. Jerry is going to meet Tom to play chess at his house. Jerry’s home is 2 kilometers north and 8 kilometers west of Tom’s. All the roads between the two houses are two-way and run either north to south or east to west. How many kilometers will Jerry drive to visit Tom?
Answers
Answer:
follow me and mark me brainliest
Help!!
Earth has a radius R = 1.5 x 1011 m, T= 365.3 days, and m= 5.97 x 1024 kg. Calculate the
speed of Earth around the sun, assuming a circular orbit.
Answers
Answer:
\(29861.23\ \text{m/s}\)
Explanation:
\(R=\text{Radius of Earth's orbit}=1.5\times10^{11}\ \text{m}\)
\(T=\text{Time taken by the Earth to complete the orbit}=365.3\ \text{days}\)
Assuming the orbit is of circular shape the distance the Earth has to travel is the circumference
\(C=2\pi R\\\Rightarrow C=2\pi\times 1.5\times10^{11}\\\Rightarrow C=942477796076.938\ \text{m}\)
Velocity is given by
\(v=\dfrac{C}{T}\\\Rightarrow v=\dfrac{942477796076.938}{365.3\times 24\times 60\times 60}\\\Rightarrow v=29861.23\ \text{m/s}\)
The speed of the Earth around the Sun is \(29861.23\ \text{m/s}\)
Wil-E-Coyote drops a bowling ball off a cliff to try to catch the Roadrunner. The cliff is 132m high. how far does it fall in the first 3.0 seconds
Answers
SOMEONE HELP PLS I WILL MARK CORRECT ANSWER BRAINLYEST ANSWER FAST PLEASE!!!!!
Answers
Answer:
C
Explanation:
what is the velocity of the student?how much kinetic energy does the student have while sprinting?what is the mechanical energy of the student?
Answers
Given data:
* The mass of the student is m = 65 kg.
* The distance covered by the student is d = 100 m.
* The time taken by the student to cover the distance is t = 12 seconds.
Solution:
(a). The velocity of the student is,
\(\begin{gathered} v=\frac{d}{t} \\ v=\frac{100}{12} \\ v=8.33\text{ m/s} \end{gathered}\)Thus, the velocity of the student is 8.33 meters per second.
(b). The kinetic energy of the student is,
\(\begin{gathered} K=\frac{1}{2}mv^2 \\ K=\frac{1}{2}\times65\times(8.33)^2 \\ K=2255.14\text{ J} \end{gathered}\)Thus, the kinetic energy of the student is 2255.14 J.
(c). The mechanical energy of the student is the energy acquired by the student during its motion.
Thus, the mechanical energy of the student is 2255.14 J.
What is a transverse wave like?
Answers
Answer:
a transverse wave is a moving wave whose oscillations are perpendicular to the direction of the wave or path of propagation
Explanation:
wave oscillate along paths at right angles to the direction of the wave’s advance.
Explanation:
when the wavelength is tripled at a constant frequency, what happens to the velocity of the wave?
a. it is tripled
b. it remains the same
c. it decreases to half the original value
d. it increases to six times the original value
Answers
Answer:
increases over time is the correct answer
Explanation:
Which benefits do mangrove trees provide to surrounding coastal wetlands? Select two options. They hold soil in place. They store floodwaters. They maintain surface water flow. They absorb the energy of waves. They filter water and improve water quality.
Answers
Mangrove trees provide a variety of benefits to surrounding coastal wetlands, including holding soil in place and storing floodwaters.
Their extensive root systems act as a barrier against erosion caused by waves and storms, keeping soil in place and preventing sediment from washing away. Additionally, the dense vegetation of mangroves can store and slow down floodwaters, reducing the impact of high tides and storm surges. This can prevent damage to nearby communities and protect other important wetland ecosystems.
Furthermore, mangrove trees also absorb the energy of waves, reducing the amount of erosion and damage to nearby shores. They also filter water and improve water quality by removing pollutants and excess nutrients from the surrounding environment, providing a healthier habitat for both wildlife and humans alike.
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vector = 6.0 m and points 30° north of east. vector = 4.0 m and points 30° west of south. the resultant vector is given by
Answers
The resultant vector has a magnitude of approximately 8.4 m and points at an angle of about 10.3° east of north.
To find the resultant vector, first resolve the given vectors into their components.
Vector 1:
- x-component: 6.0 m * cos(30°) = 5.2 m (east)
- y-component: 6.0 m * sin(30°) = 3.0 m (north)
Vector 2:
- x-component: 4.0 m * sin(30°) = 2.0 m (west)
- y-component: 4.0 m * cos(30°) = 3.5 m (south)
Now, sum the components:
- x-total: 5.2 m (east) - 2.0 m (west) = 3.2 m (east)
- y-total: 3.0 m (north) - 3.5 m (south) = 0.5 m (north)
Next, calculate the magnitude of the resultant vector: sqrt(3.2^2 + 0.5^2) ≈ 8.4 m.
Lastly, find the angle: tan^-1(0.5/3.2) ≈ 10.3° east of north.
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A westward-moving bicycle increased its speed from 2.0m/s to 12.0m/s in 4.0 seconds. What is the magnitude and direction of the acceleration?
Answers
Magnitude and direction of the acceleration is 2.5 m/s² (Toward west)
Given that;
Initial speed of car = 2 m/s
Final speed of car = 12 m/s
Time taken = 4 second
Find:
Magnitude and direction of the acceleration
Computation:
Acceleration = [v - u] / t
Magnitude and direction of the acceleration = [12 - 2] / 4
Magnitude and direction of the acceleration = 10 / 4
Magnitude and direction of the acceleration = 2.5 m/s² (Toward west)
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A single current-carrying circular loop of radius r is placed next to a long, straight wire, as shown in the figure. The current i in the wire flows to the right. In which direction must current flow in the loop to produce a net magnetic field of zero at its center?.
Answers
The current in the loop must flow in the clockwise direction to produce a net magnetic field of zero at its center.
To understand why the current should flow in the clockwise direction, let's analyze the magnetic fields produced by both the wire and the loop.
1. The long straight wire produces a magnetic field that wraps around the wire. Using the right-hand rule, we can determine that the direction of the magnetic field at the center of the loop is into the plane of the loop (since the current is flowing to the right).
2. Now, we want to find the direction of the current in the loop that will produce a magnetic field at its center, which will cancel out the magnetic field created by the wire. Using the right-hand rule again, we determine that the current in the loop should flow in a clockwise direction to produce a magnetic field coming out of the plane of the loop at its center.
By having the current flow in the clockwise direction in the loop, the magnetic field produced by the loop will counteract the magnetic field produced by the straight wire, resulting in a net magnetic field of zero at the center of the loop.
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To minimize signal distortion, at each end of the J-1939 CAN-bus there is a(n)_____________resistor.
Answers
Extra
Variable
120-ohm
Variable
Pg. 614
Which of the following is an example of a chemical property? Density Solubility Flammability Magnetism
Answers
Answer:
Flammability.
Explanation:
I took the test.
Choose the element that has the larger atomic radius: francium or sodium.
Answers
Answer:
Francium.
I hope it will be useful.
what is a concentration?
Answers
Answer/Explanation:
In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration.
A concentration refers to a subject or study within a specific major. As part of the degree coursework, concentration classes count toward your major requirements as well.
Once you have completed a correct water cycle, include a paragraph summary of the process, and how certain steps of the process may affect you.Write your answer in the essay box below.(basically explain the water cycle keep it simple pls thx)
Answers
Answer:
water process?
Explanation:
Always wash your hands, hand washing skills. By the way you spelt thanks* improperly.
Which of the following describes how upsilon_rms and T are related in the previous two parts? As T shrinks to zero, upsilon_rms shrinks to zero. As T grows toward infinity, upsilon_rms shrinks to zero. As T shrinks to zero, upsilon_rms shrinks to zero. As T grows toward infinity, upsilon_rms grows toward infinity. As T shrinks to zero, upsilon_rms grows toward infinity. As T grows toward infinity, upsilon_rms shrinks to zero. As T shrinks to zero, upsilon_rms grows toward infinity. As T grows toward infinity, upsilon_rms grows toward infinity.
Answers
As T shrinks to zero, upsilon_rms shrinks to zero. As T grows toward infinity, upsilon_rms grows toward velocity infinity.
In the previous two parts, it was shown that the relationship between the root-mean-square velocity (upsilon_rms) and the temperature (T) is directly proportional. As the temperature decreases, so does the root-mean-square velocity. Conversely, as the temperature increases, the root-mean-square velocity also increases.
Therefore, as T shrinks to zero (approaching absolute zero), the root-mean-square velocity approaches zero. However, as T approaches zero, the kinetic energy of the particles also approaches zero, causing the root-mean-square velocity to approach infinity. Therefore, the correct answer is: As T shrinks to zero, upsilon_rms grows toward infinity.
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True or false? if we want to build a telescope that detects radio waves, we must build it with a very large dish since radio waves have very large wavelengths,
Answers
Building a telescope that detects radio waves must be built with a very large dish since radio waves have very large wavelengths is regarded as a true statement.
Wavelength can be defined as the spatial period of a periodic wave—the distance over which the wave's shape repeats.
It is the distance between consecutive corresponding points of the same phase on the wave, such as two adjacent crests, troughs, or zero crossings, and is a characteristic of both traveling waves and standing waves, as well as other spatial wave patterns.
Radio waves are a type of electromagnetic radiation with the longest wavelengths in the electromagnetic spectrum, typically with frequencies of 300 gigahertz (GHz) and below.
Radio waves are generated artificially by an electronic device called a transmitter, which is connected to an antenna which radiates the waves. They are received by another antenna connected to a radio receiver, which processes the received signal.
Radio waves are very widely used in modern technology for fixed and mobile radio communication, broadcasting, radar and radio navigation systems, communications satellites, wireless computer networks and many other applications.
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constant patterns of particle behavior are called what
Answers
Constant patterns of particle behavior are called "laws of nature" or "physical laws."
These terms refer to the regular, predictable behavior of particles under certain conditions, which can be described mathematically or through scientific principles.
Examples of physical laws include Newton's laws of motion, the laws of thermodynamics, and the laws of conservation of energy and mass.
The constant patterns of particle behavior are often referred to as laws or principles.
In the context of physics, these laws describe the fundamental rules that govern the behavior of particles and systems, such as the laws of motion, the laws of thermodynamics, and the laws of electromagnetism.
These laws have been formulated through observation, experimentation, and theoretical modeling, and they provide a framework for understanding the natural world.
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Calculate the density of 2.00 cm^3 of salt having a mass of 4.32 g. Express the answer using proper significant figures and units.
Answers
Answer:
Explanation:
Density = mass / volume
mass = 4.32 grams
volume = 2 cm^3
Density = 4.32 / 2
Density = 2.16 grams/cm^3
The units and the sig digs are correct for density.
A red 120 kg bumper car moving at 4 m/s collides with a green 100 kg bumper car moving at 3 m/s. The red bumper car bounces off at 2 m/s. What is the green car's final velocity?
Answers
what would happen after a warm front passes to the air
Answers
After a warm front passes through the air, the air becomes more warm and humid.
If warm air mass replaces the cold air mass, it is called as warm front. A warm front is called as transition zone. Warm fronts usually move from southwest to northeast. Warm fronts move slower than cold fronts.
When a warm front passes over a region there will be some significant weather changes. Before the warm front passes precipitation will be light to moderate, snow, sleet or drizzle and after the front has passed there will be usually no precipitation.
Therefore, after a warm front passes through the air, the air becomes more warm and humid.
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When light hits a surface it usually bounces off at a larger angle. True or false? Justify
Answers
Answer:That only applies to highly polished surfaces, eg mirrors.
If you take a high quality laser (ie with low divergence) and aim it at a wall, you can see the spot where the laser beam reaches the wall from anywhere with a direct line-of-sight to the spot where the laser beam reaches the wall. This due to micro imperfections on the surface of the wall. At a microscopic level, the wall surface is very rough and pointing in all directions.
As to why, a beam of light bounces of a highly polished surface, I can only surmise that it is essentially due to kinematics, ie the only force opposing the light beam is normal to the surface, hence there no forces along the reflective surface. Since there are no forces along the reflective surface, the speed component of light along the reflective surface remains unchanged. However, on the plane perpendicular to the reflective surface the, the light photons bounce off at the same speed at which the hit the reflective surface because the mass of the reflective surface is much much much larger than the mass of the photons, which means that the reflective surface won’t move at all. Since conservation of momentum requires that momentum after the collision be the same as the momentum before the collision then the only way for that to happen is if the velocity of the photon perpendicular to the reflective surface is of exactly the same magnitude but in the opposite direction. Vector resolution of the speed component of the reflected beam means that the angle of reflection must be the same as the angle of incidence.
Explanation: