Which of the following substances is a mixture? a. Baking soda b. Gasoline c. Salt d. Sugar
Answers
Among the following substances, Gasoline is a mixture. The correct option is (b).
Octane, heptane, and other hydrocarbon molecules obtained from petroleum are all mixed together to make petrol. The gasoline utilized in engines is not a single, pure material but rather a mixture of several different compounds.
Baking soda (a), salt (c), and sugar (d) are pure ingredients as opposed to mixes. While sugar (sucrose) is a pure organic component, baking soda (sodium bicarbonate) and salt (sodium chloride) are substances with particular chemical compositions.
Hence, the correct option is (b).
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The majority of visible stars are _____ stars.a. neutron b. red giant c. white dwarf d. main sequence
on a high way a car is driven 80 km the first 1 he of travel, 50km during the next 0.5 he, and 40 km in the final 0.5 hr. What is the cars average speed for the entire trip?
B. reverse
C. transform
D. normal and reverse
Answers
b. meteoroid
c. dwarf planet
d. Kuiper Belt object
Answers
Ceres is best classified as a dwarf planet. Ceres is located in he asteroid belt. Ceres is much closer to Earth than Pluto and it was discovered in the year of 1801.
Ceres is considered the smallest dwarf planet of the solar system.
Answers
The required period of the wave is 0.125 seconds.
What is the frequency and time period?
In physics, frequency and period are two related concepts that are used to describe the properties of waves. Period, on the other hand, is a measure of the time it takes for one complete cycle of a wave.
Frequency is a measure of how many cycles of a wave occur in one second. It is measured in units of Hertz (Hz), which is defined as cycles per second.
Here,
The period (T) of a wave is the time it takes for one complete cycle of the wave. It is related to the frequency (f) of the wave by the formula:
T = 1/f
Where T is in seconds and f is in Hertz (Hz).
Given that the frequency of the wave is 8 Hz, we can calculate the period as follows,
T = 1/f
T = 1/8
T = 0.125 seconds
Therefore, the period of the wave is 0.125 seconds.
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b) cooled
c) warmed
d) unchanged
Answers
When a refrigerant condenses, the surrounding air is warmed. The correct option is c.
What is a refrigerant?
The refrigerant is a working fluid in a refrigerator which is capable of changes of phase at low temperatures.
A refrigerator undergoes a vapor compression refrigeration cycle using the working fluid.
When a refrigerant condenses, the surrounding air is warmed.
Thus, the correct option is c.
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In short, Your Answer would be Option C
Hope this helps!
Answers
The characteristics of electromagnetic waves typically represent as follows:
- There are changes in the electric and magnetic fields simultaneously so that both fields have maximum and minimum values at the same time and place.
- The direction of the electric field and the magnetic field are perpendicular to each other. The direction of both is perpendicular to the direction of the wave propagation.
- The shape of electromagnetic waves is transverse waves.
- It has general wave characteristics like polarization, reflection, refraction, interference, and diffraction.
- The amount of the electric field (E) is directly proportional to the magnitude of the magnetic field, with the relationship E = cB.
- The universal constant of the velocity of electromagnetic waves in a vacuum is
- The speed at which electromagnetic waves propagate depends merely on the electrical and magnetic properties of the medium that it travels on.
- Because electromagnetic waves do not contain an electric charge, they do not experience any possible deviation in the electric or magnetic fields.
Further explanation
- Two physicists who contributed significantly to developing the concept of electromagnetic waves are Faraday and Maxwell around 1831-1864.
- From the observations, Faraday suggested that changes in the magnetic field cause an electric charge to flow in the loop of wire, contributing in the emergence of an electric field.
- Maxwell proposed a reverse process, which is a change in the electric field will generate a magnetic field.
- As follows, according to Faraday's Law, changes in sinusoidal magnetic fields generate electric fields which also change sinusoidally.
- Meantime, according to Maxwell's Hypothesis, changes in sinusoidal electric fields generate magnetic fields which also change sinusoidally.
- Furthermore, there is a process of combining electric and magnetic fields that propagate in all directions called electromagnetic waves.
Learn more
- About vector components brainly.com/question/1600633
- Determine the shortest wavelength in electron transition brainly.com/question/4986277
- Particle's speed and direction of motion brainly.com/question/2814900
Keywords: the characteristics, electromagnetic waves, transverse, vacuum, electric fields, magnetic, perpendicular, propagation, Maxwell, Faraday, the speed, polarization, reflection, refraction, interference, and diffraction
Answer: reflection
Refraction
Energy
Speed
Explanation:
Reflection results when em wave hits a plane surface and returns in the same angle it incident
Refraction is the change in velocity and direction of em wave as it crosses boundaries of different medium
The energy of em wave is evenly distributed in electric field and magnetic field
The speed of em wave is the same as 3×10^8