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2 years ago

Unmoving objects are being acted on by balance forces. TRUE or FALSE?

2 answers:

8 0

True
hope this helps also their is a quizlet that can help you if you are still confused

https://quizlet.com/104253745/quizguide-flash-cards/

Reil [10]2 years ago

3 0

True. There are forced acting on it, but as they're balanced it is unmoving

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A train moving at a constant speed is passing a stationary observer on a platform. On one of the train cars, a flute player is c

Ilya [14]

Answer:

Explanation:

We shall apply the formula of Doppler effect here

F( APPARENT) = F( REAL ) X V/(V + Vs) [ v is velocity of sound and Vs is velocity of source.

415 = 440 X 343/343+Vs

142345 + 415Vs = 150920

415 V₀ = 8575

V₀ = 20.66 m/s.

8 0

3 years ago

During a solar eclipse, which of the following is true?

kaheart [24]

Answer:

The Moon blocks the suns light from hitting the surface of the earth

6 0

2 years ago

Read 2 more answers

Suppose that a comet that was seen in 563 A.D. by Chinese astronomers was spotted again in year 1951. Assume the time between ob

Mars2501 [29]

Answer:

$a=2.77*10^{13}m$

$R_a=5.49*10^{13}m$

Explanation:

The period of the comet is the time it takes to do a complete orbit:

T=1951-(-563)=2514 years

writen in seconds:

$2514years*\frac{3,154*10^7s}{1year}=7.93 *10^{10}s$

Since the eccentricity is greater than 0 but lower than 1 you can know that the trajectory is an ellipse.

Therefore, if the mass of the sun is aprox. 1.99e30 kg, and you assume it to be much larger than the mass of the comet, you can use Kepler's law of periods to calculate the semimajor axis:

$T^2=\frac{4\pi^2}{Gm_{sun}}a^3\\ a=\sqrt[3]{\frac{Gm_{sun}T^2}{4\pi^2} } \\a=1.50*10^{6}m$

Then, using the law of orbits, you can calculate the greatest distance from the sun, which is called aphelion:

$R_a=a(1+e)\\R_a=2.77*10^{13}(1.986)\\R_a=5.49*10^{13}m$

8 0

2 years ago

The lifting and removal of loose material by wind is called _____.

Mumz [18]

It would be gravity i do beileve

7 0

3 years ago

Read 2 more answers

A persons beliefs and general outlook, which Act like filters on the information they receive are called ?

lianna [129]

The correct answer is:

Consideration

<em>Consideration</em> is defined as the act of thinking something carefully, careful thought; meditation; deliberation. Consideration acts like filter on the information a person receives, because it allows them to contemplate the implications of something before acting on it.

7 0

3 years ago