Answer:
A d-t graph's slope is equivalent to the speed and direction while a v-t graph's slope is equal to its acceleration. A constant slope for a d-t graph means that the speed is constant. The area underneath a v-t graph would be its distance.
Explanation:
Incandescent lights get hot very quickly and therefore can easily burn u or catch fire
Answer:
Mixture C (salt and sugar)
Explanation:
Both salt and sugar can dissolve in water. And you can't just separate the mixture by filtering it like you could in the other mixtures.
Answer:
555
Explanation:
The scenario is shown in the image attached below. A Right Angled Triangle is formed. We have an angle of 6 degrees, the side adjacent to angle which measures 1 mile and we need to find the side opposite to the angle.
Since 1 mile = 5280 feet, the side adjacent to the angle has a measure of 5280 feet.
Tangent ratio relates the opposite and adjacent side by following formula:
Using the given values, we get:
Thus, rounded to nearest foot, the height of the building is 555 feet
T = 12.4 h, x(t) = .250 d (displacement)
The total amplitude is half of the distance d from the highest to lowest level.
Using the equation x(t) = x(m) cos(wt + φ), we get:
.250d = .5d cos(wt + φ)
To find w, use the equation w = 2π / T
.250d = .5d cos((2π / 12.4)t + φ)
.250d = .5d cos((2π / 12.4)t + 0)
Solve the equation for t.
.250d / .5d = cos ((2π / 12.4) t)
arccos(.5) = 2π / 12.4 * t
arccos(.5) * 12.4 / 2 / π = t
t = 2.066666 hours
