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WITCHER [35]
3 years ago
12

3. What is the charge on the leaves of an electroscope if a positively charged rod is moved near the

Physics
1 answer:
dsp733 years ago
7 0
I believe the answer is letter B
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The Heaviside function H is defined by H(t)={0 if t<0, 1 if t≥0 It is used in the study of electric circuits to represent the
Studentka2010 [4]

Answer:

V(t)= 240V* H(t-5)

Explanation:

The heaviside function is defined as:

H(t) =1 \quad t\geq 0\\H(t) =0 \quad t

so we see that the Heaviside function "switches on" whent=0, and remains switched on when t>0

If we want our heaviside function to switch on when t=5, we need the argument to the heaviside function to be 0 when t=5

Thus we define a function f:

f(t) = H(t-5)

The -5 term inside the heaviside function makes sure to displace the function 5 units to the right.

Now we just need to add a scale up factor of 240 V, because thats the voltage applied after the heaviside function switches on. (H(t-5) =1 when t\geq 5, so it becomes just a 1, which we can safely ignore.)

Therefore our final result is:

V(t)= 240V* H(t-5)

I have made a sketch for you, and added it as attachment.  

5 0
3 years ago
A 25-kg wagon has a momentum of 300kg m/s. What is it’s acceleration?
arsen [322]

The answer is 12 ....

8 0
3 years ago
An aircraft has a mass of 3.30 x 105 kg. At a certain instant during its landing, its speed is 45.2 m/s. If the braking force is
melamori03 [73]
Ultraconservative the future and I have been working with the following questions.
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4 years ago
When dissolved into water, a molecule of potassium chloride ___________.
avanturin [10]

Answer:

ttrttrv vt vrtttv

Explanation:

4 0
2 years ago
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I NEED THE RIGHT ANSWER ASAP NO LINKS !!!<br> This is a Science question
sdas [7]
3rd number line -5- -4 is -9
also it’s math not physics or science
8 0
3 years ago
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