- Why can distance be negative?
- Are the brightest stars low or high magnitude?
- Does magnitude have direction?
- Can vectors cancel out?
- Can the resultant of two vectors be zero?
- Does magnitude have a sign?
- What is the 2nd brightest star?
- Are vectors equal?
- What does a negative magnitude mean?
- What are the 5 brightest stars?
- What’s the biggest star in the universe?
- What magnitude can the human eye see?
- What does a negative vector look like?
- What color is the hottest star?
- What is the brightest thing in the universe?
- What is a magnitude of a vector?
- Is the magnitude always positive?
- Which star shines the most?
- What is the difference between distance and magnitude?
- Can the magnitude of a scalar be negative?
- Can you have a negative vector?
Why can distance be negative?
Distance is the total length traveled.
Distance can be measured in a variety of units (inches, feet, miles, kilometers, centimeters), but the SI unit is the meter.
It is a scalar quantity because it does NOT take into account direction.
Distance can NEVER be negative; it is always going to be positive..
Are the brightest stars low or high magnitude?
The brightest stars were 1st-magnitude and the faintest stars were 6th-magnitude. However, modern astronomy has expanded the magnitude scale to include brighter celestial objects (such as the sun, moon and Venus) and in the other direction to telescopic objects that lie beyond the limit of the naked eye.
Does magnitude have direction?
A quantity which does not depend on direction is called a scalar quantity. Vector quantities have two characteristics, a magnitude and a direction. Scalar quantities have only a magnitude. When comparing two vector quantities of the same type, you have to compare both the magnitude and the direction.
Can vectors cancel out?
Vectors can certainly cancel each other out. Just imagine you have a box, and you push on it from both sides. You’ve applied two forces, but the box doesn’t move. The forces canceled out!
Can the resultant of two vectors be zero?
Yes, two vectors of equal magnitude that are pointing in opposite directions will sum to zero. Two vectors of unequal magnitude can never sum to zero. If they point along the same line, since their magnitudes are different, the sum will not be zero.
Does magnitude have a sign?
Answer: Magnitude cannot be negative. It is the length of the vector which does not have a direction (positive or negative).
What is the 2nd brightest star?
CanopusMeasurements from Hipparcos pinpointed the distance of Canopus (313 light-years away) and its luminosity (at least 12,000 times that of the sun.) The luminosity makes it the second-brightest star in the night sky despite its distance from Earth.
Are vectors equal?
When are Two Vectors Equal? Two or more vectors are equal when they have the same length, and they point in the same direction. Any two or more vectors will be equal if they are collinear, codirected, and have the same magnitude. If two vectors are equal, their column vectors will also be equal.
What does a negative magnitude mean?
An earthquake of negative magnitude is a very small earthquake that is not felt by humans.
What are the 5 brightest stars?
The top 10 brightest stars in the night sky.Sirius A (Alpha Canis Majoris) … Canopus (Alpha Carinae) … Rigil Kentaurus (Alpha Centauri) … Arcturus (Alpha Bootis) … Vega (Alpha Lyrae) … Capella (Alpha Aurigae) … Rigel (Beta Orionis)Nov 15, 2019
What’s the biggest star in the universe?
The largest known star in the universe is UY Scuti, a hypergiant with a radius around 1,700 times larger than the sun.
What magnitude can the human eye see?
magnitude 6.5As mentioned above, the dimmest object visible with the naked eye is typically magnitude 6.5. However this magnitude (called the magnitude limit) can vary….Magnitudes.Magnitude -27The SunMagnitude 6The dimmest objects visible with the naked eyeMagnitude 10The dimmest objects visible with binoculars4 more rows
What does a negative vector look like?
A negative vector is a vector which points in the direction opposite to the reference positive direction. For example, if in a particular situation, we define the upward direction as the reference positive direction, then a force →F1=30 N downwards would be a negative vector and could also be written as →F1=−30 N.
What color is the hottest star?
Blue starsWhite stars are hotter than red and yellow. Blue stars are the hottest stars of all. Stars are not really star-shaped.
What is the brightest thing in the universe?
The Brightest Quasar of the Early Universe Shines with the Light of 600 Trillion Suns. Scientists have discovered the energetic core of a distant galaxy that shatters the record for the brightest object in the early universe, blazing with the light equivalent to 600 trillion suns.
What is a magnitude of a vector?
The magnitude of a vector is the length of the vector. The magnitude of the vector a is denoted as ∥a∥. See the introduction to vectors for more about the magnitude of a vector. … For a two-dimensional vector a=(a1,a2), the formula for its magnitude is ∥a∥=√a21+a22.
Is the magnitude always positive?
No: Magnitude is always positive even if the direction is negative. For the sum of two vectors to equal zero the sum of their respective components must equal zero.
Which star shines the most?
Sirius, also known as the Dog Star or Sirius A, is the brightest star in Earth’s night sky. The name means “glowing” in Greek — a fitting description, as only a few planets, the full moon and the International Space Station outshine this star.
What is the difference between distance and magnitude?
Distance is defined to be the magnitude or size of displacement between two positions. Note that the distance between two positions is not the same as the distance traveled between them. Distance traveled is the total length of the path traveled between two positions. Distance traveled is not a vector.
Can the magnitude of a scalar be negative?
Any scalars that are defined as the magnitude of a vector is non-negative. Electric charge is one of the examples of scalars that can take negative values. … If a scalar can be represented on a number line, then it is a real number, and both positive, and negative numbers, and zero.
Can you have a negative vector?
Vectors are only negative with respect to another vector. … The magnitude, or length, of a vector, cannot be negative; it can be either be zero or positive. The negative sign is used here to indicate that the vector has the opposite direction of the reference vector.