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3 years ago

The colors of light that televisions primarily use to make a picture are ______________.

Physics

2 answers:

Bumek [7]3 years ago

3 0

Answer:

Red, Green, and Blue

Explanation:

Each of the pixels on a computer monitor or TV screen is composed of phosphors surrounded by a black mask. The different colors we see are results from different combinations and intensities of these three primary colors (Red, Green, and Blue).

WINSTONCH [101]3 years ago

3 0

The colors mainly used in television are red green and blue

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The force exerted by the wind on the sails of a sailboat is Fsail = 330 N north. The water exerts a force of Fkeel = 210 N east.

Elena L [17]

Answer:

The magnitude of the acceleration is $a_r = 1.50 \ m/s^2$

The direction is $\theta = 32.5 6^o$ north of east

Explanation:

From the question we are told that

The force exerted by the wind is $F_{sail} = (330 ) \ N \ north$

The force exerted by water is $F_{keel} = (210 ) \ N \ east$

The mass of the boat(+ crew) is $m_b = 260 \ kg$

Now Force is mathematically represented as

$F = ma$

Now the acceleration towards the north is mathematically represented as

$a_n = \frac{F_{sail}}{m_b}$

substituting values

$a_n = \frac{330 }{260}$

$a_n = 1.269 \ m/s^2$

Now the acceleration towards the east is mathematically represented as

$a_e = \frac{F_{keel}}{m_b }$

substituting values

$a_e = \frac{210}{260}$

$a_e =0.808 \ m/s^2$

The resultant acceleration is

$a_r = \sqrt{a_e^2 + a_n^2}$

substituting values

$a_r = \sqrt{(0.808)^2 + (1.269)^2}$

$a_r = 1.50 \ m/s^2$

The direction with reference from the north is evaluated as

Apply SOHCAHTOA

$tan \theta = \frac{a_e}{a_n}$

$\theta = tan ^{-1} [\frac{a_e}{a_n } ]$

substituting values

$\theta = tan ^{-1} [\frac{0.808}{1.269 } ]$

$\theta = tan ^{-1} [0.636 ]$

$\theta = 32.5 6^o$

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Paraphin [41]

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3 years ago

The truck is accelerating at a rate of +1.50 m/s2. The mass of the crate is 120-kg and it does not slip. The magnitude of the di

trapecia [35]

Answer:

The work done by the friction force is 11700J

Explanation:

The work done by the friction force is given by:

$Wfs=fs*cos(\theta)*d\\Wfs=fs*cos(0)*65m$

According to Newton's second law:

$f=m*a\\fs=120kg*1.50m/s^2=180N$

So:

$Wfs=180N*65m\\Wfs=11700J$

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3 years ago