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4 years ago

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A trough is 12 ft long and its ends have the shape of isosceles triangles that are 4 ft across at the top and have a height of 1

ft. If the trough is being filled with water at a rate of 13 ft3/min, how fast is the water level rising when the water is 8 inches deep

1 answer:

zhenek [66]4 years ago

5 0

Answer:

169/4 ft/min.

Explanation:

See the attached picture.

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Which statement best describes Cleo's mistake? Light travels through air and water in angled, scattered paths. Light does not ch

pashok25 [27]

<u>The question</u> (obtained from the internet);

Cleo stated that light travels through air in straight paths, and when it moves from air to water, light changes direction, speeds up, and bends towards the normal

Answer:

The statement that best describes Cleo's mistake is;

Light slows down when it moves from air into water

Explanation:

The question;

Cleo stated that light travels through air in straight paths, and when it moves from air to water, light changes direction, speeds up, and bends towards the normal

The speed of light in water = 225,000 km/s

The speed of light in air = 299,702,547 m/s

The speed of light in vacuum = 299,792,458 m/s

Therefore, light slows down when it moves from a less dense medium to a denser medium

Light moves closer (bends) towards the normal when it moves from air into water. Light therefore, changes direction, and light moves in straight path which is known as rectilinear motion

Therefore, the statement that describes Cleo's mistake is that light actually slows down when it moves from air into water.

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3 years ago

The quantum model suggests that electrons __________.

yan [13]

The correct answer is (d), electrons are in probable cloud location.

An atom is made up of three fundamental particles, electron, proton and neutron. Proton and neutron are located in the nucleus, while the electrons orbit the nucleus in relative large orbit, however the exact position of the electron in the shall is highly unpredictable, therefore they are assumed to be in probable cloud location where the probability of finding an electron is very high.

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4 years ago

on takeoff, the propellers on a uav (unmanned aerial vehicle) increase their angular velocity from rest at a rate of ω = (25.0t)

Rudik [331]

Hi there!

a)
We can find the angular velocity at t = 2.0 s by plugging in this value into the equation.

$\omega (t) = 25.0t \\\\\omega (2) = 25.0(2) = \boxed{50.0 \frac{rad}{s}}$

b)

The angular acceleration is the derivative of the angular velocity, so:
$\alpha (t) = \frac{d\omega}{dt} (25.0t) = 25.0$

Thus, the angular acceleration is a <u>constant 25 rad/s².</u>

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2 years ago

He travels 17 km south and then 3 km north how far he needs to go back to where he started

I am Lyosha [343]

Answer:

14 km

Explanation:

He goes south 17km then goes back 3km which leaves 14km left.

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3 years ago

How can Ohm's Law relate to a house fire?

8_murik_8 [283]

There is no connection there that I can think of.

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4 years ago