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.
The GUI or Graphical <u /><u></u><em />User Interface.
Answer:
Explanation:
proviene del francés informatique, implementado por el ingeniero Philippe Dreyfus a comienzos de la década del '60. ... De esta forma, la informática se refiere al procesamiento automático de información mediante dispositivos electrónicos y sistemas computacionales.
Answer:
Deleting a record on a B-tree consists of three main events:
- Searching the node where the key to be deleted exists
- Deleting the key
- Balancing the tree if required
Explanation:
q = NULL;
p = tree;
while (p) {
i = nodesearch(p, key);
q = p;
if (i < used(p) -1 && key == k(p,i)) {
found = TRUE;
position = i;
break;
}
p = son(p,i);
}
if (!found)
else if (subtree(p)) {
if (used(p) > ((n-1)/2)+1)
delkey (p, position, key);
else {
replace (p, position, fsucc(p));
p0 r1 p1 r2 p2 r3 ……. pn-1 rn-1 pn
q = &fsucc(p);
qpos = index of fsucc;
if (used(rbrother(p)) > ((n-1)/2)+1)
replace (q, qpos, sonsucc(q));
else
while (q && used(q) < (n-1)/2) {
concatenate(q, brother(q));
q = father(q);
}
}
}
else
delkey(p, position, key);
}
Answer:
The correct option is a.
A business that collects personal information about consumers and sells that information to other organizations.
Explanation:
Data brokers, also known as data suppliers, data fetchers, information brokers, or even data providers are businesses or companies (even individuals) that, on the most basic level, source and aggregate data and information (mostly information that are meant to be confidential or that are in the real sense difficult to get) and then resell them to third parties. These third parties could be other data brokers.
They collect data and information from a wide range of resources and sources - offline and/or online e.g web access history, bank details, credit card information, official records (such as birth and marriage certificates, driver's licenses).
Brokers can steal round about any information. Examples of information that brokers legally or illegally steal are full name, residential address, marital status, age, gender, national identification number, bank verification number. Brokers and hackers are siblings.
A couple types of data brokers are:
1. Those for fraud detection
2. Those for risk mitigation
Hope this helps!
