To know how many times does the current oscillates in the given time, you take into account that the number of oscillation can be calculated by using the following expression:

$n=ft$ (1)

f: frequency of the oscillation of the current

t: time = 0.30s

The frequency is the number of cycles per second, that is, f = 60 cycles/s

You replace the values of f and t in the equation (1):

$n=(60\frac{cycles}{s})(0.30s)=18\ cycles$

In 0.30s the current oscillates 18 times

5 0

2 years ago

set up the algebra tiles for each equation and take a snippet of it to submit, along with the work and the answer. 6x + 2 = 4x –

lapo4ka [179]

X = -5 is the answer

3 0

2 years ago

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In ΔEFG, the measure of ∠G=90°, FG = 1.5 feet, and EF = 7.5 feet. Find the measure of ∠F to the nearest degree.

fomenos

Answer:

78°

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you of the relations between angles and sides of a right triangle. In particular, ...

Cos = Adjacent/Hypotenuse

cos(F) = FG/FE = 1.5/7.5 = 0.2

The inverse cosine function is used to find the angle:

∠F = arccos(0.2)

∠F ≈ 78°

8 0

3 years ago

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What is the value of ▲ in the equation shown? 8x4=( ▲ x7)-( ▲ x3)

Gwar [14]

32=7-3
32=4
divide by 4
8=

3 0

3 years ago

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