<h3>The metre is the length of the path travelled by light in vacuum during a time interval of 1299 792 458 of a second.</h3>
Answer:
The answer is "Walk three days a week, gradually adding distance and hills."
Explanation:
The FITT Principle <u>guides a person in becoming a fitter version of himself by following a particular frequency, intensity, time and type of exercise in order to achieve his goals.</u>
<u>Frequency</u>- this refers to how often a person should do an exercise. For example, 5 times a week of intense core workout.
<u>Intensity</u>- this refers to the person's vigour or strength in doing the workout. This depends whether the person is doing a high-intensity or a low-intensity exercise.
<u>Time</u>- this refers to the length of a person's exercise. This will largely depend on every individual's fitness level.
<u>Type of Exercise</u>- this refers to the exercise that a person should incorporate in his training<u> in order to avoid injuries of using the same muscles over and over again.</u>
Among the choices above, it is only the second choice (Walk three days a week, gradually adding distance and hills) that follows the FITT principle. Walking shouldn't be kept at the same pace and distance for many weeks, since it results to<em> boredom and overuse injuries. </em>This will also lead to a plateau when it comes to people who are trying to lose weight because the body has already well-adjusted to the exercise and cannot be challenged anymore.
<em>Gradually increasing the distance and hills will allow the person to be more challenged </em>and<em> </em>will also increase his desire to workout (because he is seeing results).
Considering the answers.
1. Halve the voltage across it
2. Quarter the voltage across it
3. Double the voltage across it
4. Quadruple the voltage across
The appropriate answer would be 3. Double the voltage. According to ohms law the current through a conductor between two points is directly proportional to the voltage across the two points at a constant resistance. Therefore a increase in voltage causes a corresponding increase in the current.
Answer:
89.87m/s
Explanation:
Given the velocity function
v(t)=−t²+3t−2
In order to get the displacement function, we will integrate the velocity function as shown:
![\int\limits^5_{-2} {v(t)} \, dt \\d(t)= \int\limits^5_{-2}{(-t^2+3t+2)} \, dt \\\\d(t)=[\frac{-t^3}{3}+\frac{3t^2}{2}+2t ]^5_{-2}\\](https://tex.z-dn.net/?f=%5Cint%5Climits%5E5_%7B-2%7D%20%7Bv%28t%29%7D%20%5C%2C%20dt%20%5C%5Cd%28t%29%3D%20%5Cint%5Climits%5E5_%7B-2%7D%7B%28-t%5E2%2B3t%2B2%29%7D%20%5C%2C%20dt%20%5C%5C%5C%5Cd%28t%29%3D%5B%5Cfrac%7B-t%5E3%7D%7B3%7D%2B%5Cfrac%7B3t%5E2%7D%7B2%7D%2B2t%20%20%5D%5E5_%7B-2%7D%5C%5C)
at t = 5
![d(5)=[\frac{-5^3}{3}+\frac{3(5)^2}{2}+2(5) ]\\d(5)=[\frac{-125}{3}+\frac{75}{2}+10 ]\\d(5)=-41.7+37.5+10\\d(5)=89.2m/s](https://tex.z-dn.net/?f=d%285%29%3D%5B%5Cfrac%7B-5%5E3%7D%7B3%7D%2B%5Cfrac%7B3%285%29%5E2%7D%7B2%7D%2B2%285%29%20%20%5D%5C%5Cd%285%29%3D%5B%5Cfrac%7B-125%7D%7B3%7D%2B%5Cfrac%7B75%7D%7B2%7D%2B10%20%20%5D%5C%5Cd%285%29%3D-41.7%2B37.5%2B10%5C%5Cd%285%29%3D89.2m%2Fs)
at t = -2
![d(-2)=[\frac{-(-2)^3}{3}+\frac{3(-2)^2}{2}+2(-2) ]\\d(-2)=[\frac{-8}{3}+\frac{12}{2}+(-4) ]\\d(-2)=-2.67+6-4\\d(-2)=-0.67m/s](https://tex.z-dn.net/?f=d%28-2%29%3D%5B%5Cfrac%7B-%28-2%29%5E3%7D%7B3%7D%2B%5Cfrac%7B3%28-2%29%5E2%7D%7B2%7D%2B2%28-2%29%20%20%5D%5C%5Cd%28-2%29%3D%5B%5Cfrac%7B-8%7D%7B3%7D%2B%5Cfrac%7B12%7D%7B2%7D%2B%28-4%29%20%20%5D%5C%5Cd%28-2%29%3D-2.67%2B6-4%5C%5Cd%28-2%29%3D-0.67m%2Fs)
Required displacement = d(5) - d(-2)
Required displacement = 89.2 - (-0.67)
Required displacement = 89.2 + 0.67
Required displacement = 89.87m/s
If the light is really "white", then it contains all wavelengths
of visible light.
When white light strikes any object that reflects any wavelength
of visible light, the object appears to be the color that it reflects.
