3 years ago

A plate glass window (n = 1.5 has a thickness of 3.6 mm. how long does it take light to pass perpendicularly through the plate?

Physics

1 answer:

Artyom0805 [142]3 years ago

8 0

Hope this helps you.

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When time is measured in days, the decay constant for a particular radioactive isotope is 0.16. Determine the time required for

san4es73 [151]

Answer:

The time take is $t = 1.3964 \ days$

Explanation:

From the question we are told that

The decay constant is $\lambda = 0.16$

The percentage fall is $c = 0.80$

The equation for radioactive decay is mathematically represented as

$N(t) = N_o * e^{- \lambda t }$

Where is $N(t)$ is the new amount of the new the isotope while $N_o$ is the original

At initial $N_o = 100$ % = 1

At $N(t ) = 80$ % = 0.80

$0.80 = 1 * e^{- 0.16 t }$

=> $-0.223 = -0.16 t$

=> $t = 1.3964 \ days$

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3 years ago

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Which electromagnetic waves can have wavelengths of 300 nm?

Gelneren [198K]

I believe that the answer is A

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3 years ago

Does a 2000 mercury cougar have a timing belt

Katena32 [7]

No it does not have a timing belt

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An object of mass 30 kg is falling in air and experiences a force due to air resistance of 50

Setler79 [48]

Answer:

very hard others will answer it

Explanation:

hard

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Wilma can mow a lawn in 80 minutes. Rocky can mow the same lawn in 120 minutes. Construct an equation that would allow you to de

xeze [42]

Answer:

$t = 96 minutes$

Explanation:

Time to mow 1 lawn by Wilma is 80 minutes

so work done in 1 minute by Wilma is given as

$W_1 = \frac{1}{80}$

Similarly Rocky mow same lawn in 120 minute

so work done in 1 minute by Rocky is given as

$W_2 = \frac{1}{120}$

now we know that they both worked by "t" time

so total work performed by them

$W = \frac{t}{80} + \frac{t}{120}$

they both mow 2 lawns then it is given as

$2 = (\frac{1}{80} + \frac{1}{120})t$

$t = 96 minutes$

5 0

3 years ago