"The increased availability of mobile digital devices has had a positive impact on how young people use their free time."
There are many different views that you could take upon this subject.
1) You could say that the increased availability of mobile digital devices has allowed children to increase their academic success, by being able to search for and complete assignments using these devices.
2) You could say that the increased availability of mobile digital devices allows for children to occupy themselves by providing games, videos, books, and other things to provide them with entertainment, a learning experience, and more.
Hope this helps!
Answer:
A. 0.0450
B. 4
C. 0.25
D. 37.68
E. 6Hz
F. -0.523
G. 1.5m/s
H. vy = ∂y/∂t = 0.045(-37.68) cos (25.12x - 37.68t - 0.523)
I. -1.67m/s.
Explanation:
Given the equation:
y(x,t) = 0.0450 sin(25.12x - 37.68t-0.523)
Standard wave equation:
y(x, t)=Asin(kx−ωt+ϕ)
a.) Amplitude = 0.0450
b.) Wave number = 1/ λ
λ=2π/k
From the equation k = 25.12
Wavelength(λ ) = 2π/25.12 = 0.25
Wave number (1/0.25) = 4
c.) Wavelength(λ ) = 2π/25.12 = 0.25
d.) Angular frequency(ω)
ωt = 37.68t
ω = 37.68
E.) Frequency (f)
ω = 2πf
f = ω/2π
f = 37.68/6.28
f = 6Hz
f.) Phase angle(ϕ) = -0.523
g.) Wave propagation speed :
ω/k=37.68/25.12=1.5m/s
h.) vy = ∂y/∂t = 0.045(-37.68) cos (25.12x - 37.68t - 0.523)
(i) vy(3.5m, 21s) = 0.045(-37.68) cos (25.12*3.5-37.68*21-0.523) = -1.67m/s.
Complete The test as quickly as possible
Either options C or D
You can change the chart type of the whole chart or for single data series in most 2-D charts to give the chart a different look. In 3D or bubble charts, you can only change the chart type of the whole chart. By following the steps in the answers above, you will be in a position to select available chart type like column chart or line chart.
