A cannon is shot from the ground with a speed of 100 m/s at an unknown angle, if itlands after being in the air for 6 s, what was the angle of the launch?
Answers
Answer:
The angle of the launch is 17.09 degrees.
Explanation:
Given that,
The initial speed of a cannon is 100 m/s
It is launched at some angle and it lands after being in the air for 6 s.
We need to find the angle of the launch.
The time taken by the projectile to reach the ground is called the time of flight. It is given by the formula as follows :
Here, = launch angle
Hence, the angle of the launch is 17.09 degrees.
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Answers
Given the value of wavelength and speed at which the wave travels, the frequecy of the wave is 20 Hertz.
What is Wavelength?
Wavelength is simply the distance over which the shapes of waves are repeated. It is the spatial period of a periodic wave.
From the wavelength, frequency and speed relation;
λ = v ÷ f
Where λ is wavelength, v is velocity/speed and f is frequency.
Given the data in the question;
- Wavelength λ = 15m
- Speed of the wave v = 300m/s
- Frequency f = ?
To determine the frequency of the wave, we substitute our given values into the expression above.
λ = v ÷ f
f = v ÷ λ
f = 300m/s ÷ 15m
f = 20s⁻¹
f = 20Hz
Given the value of wavelength and speed at which the wave travels, the frequecy of the wave is 20 Hertz.
Learn more about Speed, Frequency and Wavelength here: brainly.com/question/27120701
Answers
Answers
Answer: cluster
Explanation:
There are four main shapes of galaxies: spiral, galaxies are divided into four main groups: spiral, lenticular, elliptical, and irregular, elliptical, and irregular.
The least common shape is cluster
Spiral galaxies- These are the most common. These have arms extending from a bright bulge in spiral shape.
Elliptical galaxy have ellipsoidal shape.
Lenticular galaxies - Intermediate between elliptical and spiral galaxies.
Irregular shape- No well defined shape
Spherical - Nearly spherical galaxies. These are least
cluster- group of galaxies having irregular shape is the least common shape.
Question: The least common shape for a galaxy _____.
Answer:Cluster
Answers
The frequency of the wave with a speed of 330 m/s and 2 meter wavelength is 165 Hz. The time period of the wave is then, 0.006 seconds.
What is frequency ?
Frequency of a wave is the number of wave cycles per second. Frequency of a wave is the inverse of its time period. It is inversely proportional to the wavelength and directly proportional to the speed.
Hence, ν = c/λ, where c is the speed.
The frequency of a sound wave is called its pitch.
Given that, c = 330 m/s
wavelength λ = 2 meters.
frequency = 330/2 = 165 s⁻¹ or 165 Hz.
The time period of a wave = 1/ frequency.
T = 1/165 = 0.006 s or 6 milliseconds.
Therefore, the frequency of the wave is 165 Hz and time period is 0.006 seconds.
Find more on sound waves:
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I would personally drink a hot beverage from a ceramic cup than a metal cup for various reasons.
Firstly, ceramic cups do not change the taste of the beverage, while in some cases, metal cups do.
Secondly, since metal conducts heat, it would be wise to drink a hot beverage from a ceramic cup. Heated metal can burn your fingers if touched.
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