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Answer:
Explanation:
The equations for the horizontal and vertical position of the ball are, respectivelly:
By isolating each trigonometric component and summing each equation:
The positive real roots are:
The needed angle is:
<h3><u>Answer</u>;</h3>
Decrease
<h3><u>Explanation</u>;</h3>
- Chemical reaction may be either endothermic or exothermic based on whether they use heat energy or release it to the surroundings.
- An endothermic reaction occurs when the temperature of an isolated system decreases while the surroundings of a non-isolated system gains heat.
- In endothermic reactions the temperature of the surroundings decreases.
Answer:
The frequency increases with a shorter horn <em>(Option B)</em>.
Explanation:
The length of the horn determines the distance along which the wave travels; simply called the wavelength. Therefore, a short horn tube will produce a short wavelength and vice versa.
Sound waves have various characteristics that define pitches in musical instruments and these characteristics are interdependent on each other.
in this case, the frequency and the frequency and the wavelength are related.
The relationship between the wavelength and its frequency is given as:
<em> </em><em>c = f λ </em><em> </em>
<em>where 'c' is the speed of sound through the instrument; 'f ' is the frequency and 'λ' is the wavelength.</em>
Let's assume that the speed at which the musician blows air into the mouthpiece remains constant, an increase in wavelength will cause a decrease in frequency. Conversely, as the tube of the horn becomes shorter the frequency increases.
Yes, you need to convert unless the question specifically requires km/h.