Answer:
#See solution for details.
Explanation:
Newton's Second law of motion states that :- the rate of change of momentum is directly proportional to the force applied on an object or system..
The force applied on an object of mass m is directly proportional to the product of mass and acceleration:
-Let be the initial momentum and be the final momentum.
#also let be the initial velocity and the final.
Momentum,:
#where k is the constant of proportionality. Given the direct proportion, k=1.
#The unit is in kgm/s but usually equated to N, 1kgm/s=1N
To solve this problem, apply the concepts related to the relationship given between the centripetal Force and the Weight.
The horizontal force component is equivalent to the weight of the car, while the vertical component is linked to the centripetal force exerted on the car, therefore,
Equating both equation we have that,
Rearranging to find the angle we have that,
Our values are given as,
Therefore the minimum angle will be 11.53°
Well, those are good ones. Now how about a <u><em>thermometer</em></u> to <em>measure the temperature</em> ?
In my opinion i think it is water
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.