<u>Answer:</u>
Displacement = 100 meter
Distance covered = 180 meter.
<u>Explanation:</u>
Let east represents positive x- axis and north represent positive y - axis. Horizontal component is i and vertical component is j.
Carl runs 100 m West, Displacement = -100 i
He then runs 60 m North, Displacement = 60 j
He then runs 20 m East, Displacement = 20 i
Total displacement of Carl's running = -100 i + 60 j + 20 i = (-80 i + 60 j) m (Vector)
Magnitude of displacement = 
Distance traveled by Carl = 100 + 60 + 20 = 180 m ( Scalar)
<span>Density is a value for
mass, such as kg, divided by a value for volume, such as m3. Density is a
physical property of a substance that represents the mass of that substance per
unit volume. We do as follows:
</span><span>A. 1L
100 g /1L = 100 g/L
B. 0.10 L.
100g/0.10L = 1000 g/L ------> MOST DENSE SUBSTANCE
C. 100 L
</span>100g/100L = 1 g / L <span>
D. 10 L
</span>100g/10L = 10 g/L
The answer is d.8,120 foot-pounds
If the separation between the openings in a laser is increased, then the distance between the interference fringes decreases
<h3>What is Interference fringe ?</h3>
Interference fringe refers to bands caused by different lights which can be found in phase or not each other.
- Distances between laser fringes are short which is due to light wavelength.
- The interference fringes can be estimated by knowing slit separation and wavelength.
In conclusion, if the separation between the openings in a laser is increased, then the distance between the interference fringe decreases
Learn more about Interference fringe here:
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Answer:
Electromagnetic Radiation
Explanation:
Electromagnetic radiation is formed by the combination of electric and magnetic fields, which propagate through space in the form of energy-carrying waves.
Electromagnetic waves have vibrations perpendicular to the direction of wave propagation. For this reason, they are classified among the transverse waves.
Electromagnetic waves travel through space, and do not need a material medium to propagate.
Main types of electromagnetic radiation.
Gamma rays: More energetic radiation. It has the highest frequency (and therefore, the shortest wavelength). They constitute a form of radioactivity.
X-rays: Radiation of less energy than gamma rays. It is used in medical examinations and in the study of metals.
Ultraviolet (UV) rays: Radiation of less energy than X-rays. It comes mainly from the sun.
Visible radiation: Radiation of lower energy than ultraviolet rays. Collect the range of frequencies that can be perceived with the view, from red to violet.
Infrared rays (IR): Radiation of less energy than visible radiation. It is emitted by hot bodies.
Microwave: Radiation of less energy than infrared. It is used in appliances and medical therapy.
TV and radio waves: Less energetic radiation. They are used in telecommunications
