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4 years ago

Students who embrace an innate mindset might view their poor performance in math as inevitable or beyond their control

Physics

2 answers:

PilotLPTM [1.2K]4 years ago

4 0

Answer:

True

Explanation:

Licemer1 [7]4 years ago

4 0

Ture hdhshdjdjdjeiwkwks

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A plane electromagnetic wave with wavelength 3.0 m, travels in free space in the+xdirection with its electric field vector~E, of

mart [117]

Answer:

f =1 10⁸ Hz

Explanation:

The speed of an electromagnetic wave is given by

c = Lam f

In our case, the wavelength is 3.0 m, so we can clear the frequency

f = c / Lam

f = 3 108/3.

f =1 10⁸ Hz

6 0

3 years ago

A cube of an unknown element has a shiny, silvery color. The side of the cube measures 2.0 cm and the cube has a mass of 14.56 g

shepuryov [24]

Answer: beryllium

Explanation: i took the test i got it right!!

8 0

3 years ago

When two atoms of the same nonmetal react, they often form a(an) A. ionic bond. B. polyatomic ion. C. diatomic molecule. D. pola

Mariana [72]

<span>When two atoms of the same nonmetal react,they form what we know today as a diatomic molecule.</span>

5 0

3 years ago

Read 2 more answers

Can some help with this? id appreciate your help :)

Slav-nsk [51]

Answer:

I am not really sure but i think its option 2

Explanation:

6 0

2 years ago

RACTIC PTUDIES

Amanda [17]

Answer:

The illumination on the book before the lamp is moved is 9 times the illumination after the lamp is moved.

Explanation:

The distance of the book before the lamp is moved, $d_{b} = 30 cm$

The distance of the book after the lamp is moved, $d_{a} = 90 cm$

Illumination can be given by the formula, $E = \frac{P}{4 \pi d^{2} }$

Illumination before the lamp is moved, $E_{b} = \frac{P}{4 \pi d_{b} ^{2} }$

Illumination after the lamp is moved, $E_{a} = \frac{P}{4 \pi d_{a} ^{2} }$

$\frac{E_{a}}{E_{b}} } = \frac{\frac{P}{4 \pi d_{a} ^{2} } }{\frac{P}{4 \pi d_{b} ^{2} } }$

$\frac{E_{a} }{E_{b} } = \frac{d_{b} ^{2} }{d_{a} ^{2}} \\\frac{E_{a} }{E_{b} } = \frac{30^{2} }{90 ^{2}}\\\frac{E_{a} }{E_{b} } =\frac{900 }{8100}\\\frac{E_{a} }{E_{b} } =\frac{1 }{9}$

$E_{b} = 9E_{a}$

The illumination on the book before the lamp is moved is 9 times the illumination after the lamp is moved.

6 0

3 years ago