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3 years ago

Bro i need help omg.

Physics

2 answers:

sergey [27]3 years ago

8 0

Answer:

25.

Explanation:

olga nikolaevna [1]3 years ago

4 0

because you're taking off the front number which is one

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The second-order bright fringe in a single-slit diffraction pattern is 1.35 mm from the center of the central maximum. The scree

Dafna11 [192]

Answer:

The wavelength is 754.2 nm.

Explanation:

Given that,

Diffraction pattern y= 1.35 mm

Width = 0.838 mm

Distance D= 75 cm

We need to calculate the wavelength

Using formula of diffraction pattern

$y=\dfrac{m\lambda D}{d}$

$\lambda=\dfrac{yd}{mD}$

Where, y = diffraction pattern

m = order

d = width

D = distance

Put the value into the formula

$\lambda=\dfrac{1.35\times10^{-3}\times0.838\times10^{-3}}{2\times75\times10^{-2}}$

$\lambda=7.542\times10^{-7}\ m$

$\lambda=754.2\ nm$

Hence, The wavelength is 754.2 nm.

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3 years ago

Who was the first president of America

ivolga24 [154]

Answer:George Washington

Explanation:On April 30, 1789, George Washington, standing on the balcony of Federal Hall on Wall Street in New York, took his oath of office as the first President of the United States.

5 0

3 years ago

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The pressure of a 1.0 liter balloon is at 1 atm at 293 K if you were to take the balloon into a freezer that is still at One ATM

Fofino [41]

Here we can say that number of moles as well as pressure will remain same for the balloon

so here we can say by ideal gas equation

$PV = nRT$

so here for constant pressure and constant number of moles we have

$\frac{V_1}{T_1} = \frac{V_2}{T_2}$

$\frac{1}{293} = \frac{V}{263}$

now by rearranging the equation we have

$V = \frac{263}{293}$

$V = 0.89 Liter$

so final volume will be 0.89 liter

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3 years ago

Which of the following statements is false?

Pie

A is false because light and sound waves can both reflect off of objects

3 0

3 years ago

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I takes you 42 minutes to travel 32 miles to Ann Arbor. What was your<br> speed getting there?

frez [133]

Answer: $45.71 mi/h$

Explanation:

Speed $S$ is defined a:

$S=\frac{d}{t}$

Where:

$d=32 miles$ is the traveled distance

$t=42 min \frac{1 h}{60 min}=0.7 h$ is the time

Solving:

$S=\frac{32 miles}{0.7 h}$

$S=45.71 mi/h$ This is the speed

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4 years ago