4 years ago

Scientists infer that ancient geologic features formed through the same processes they observe today based on the principle of?

Physics

1 answer:

Gnom [1K]4 years ago

4 0

Answer: uniformitarianism

Explanation:

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How long does it take oxygen to diffuse a distance of 1 mm in water at room temperature? How long does it take oxygen to diffuse

Viktor [21]

Answer:

option A

Explanation:

given,

travel distance = 1 mm

diffusion constant for the molecule of oxygen in water = 1 x 10⁻⁹ m²/s

we know that

$t = \dfrac{x^2}{2D}$

t is the time taken for diffusion

x = 1 mm = 10⁻³ m

D is the diffusion

$t = \dfrac{(10^{-3})^2}{2\times 10^{-9}}$

$t = \dfrac{(10^{3})}{2}$

t = 500 s

so, the option to the answer is 170 s

the correct answer is option A

8 0

4 years ago

deon is running at a velocity of 7.9 meters per second. deon has a total mass of 95 kilograms including his helmet, uniform, pad

brilliants [131]

Answer:

712.5 kg m/s

Explanation:

Work out the total momentum before the event (before the collision):

p = m × v

Massof Deon = 95kg

Velocity =7.5m/s

Mass of Chuck = 120kg

Velocity = 0m/s

Momentum of Deon before = 95 × 7.5 = 712.5 kg m/s

Momentum of Chuck before = 120 × 0 = 0 kg m/s

Total momentum before = 712.5+ 0 = 712.5 kg m/s

Working out the total momentum after the event (after the collision):

Because momentum is conserved, total momentum afterwards = 712.5 kg m/s

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3 years ago

A pilot can withstand an acceleration of up to 9g, which is about 88 m/s2, before blacking out. (a) What is the acceleration exp

givi [52]

Yes the plot dose make it with out baking out

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3 years ago

Plzz Help easy quesion for 20 points Why does someone get burned if they touch an old filament bulb that has been on for a few h

fgiga [73]

Incandescent lights get hot very quickly and therefore can easily burn u or catch fire

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3 years ago

Read 2 more answers

A force of 150 N is applied to a 25 cm2 piston in a hydraulic machine. What is the area of a larger piston if the force availabl

Colt1911 [192]

Answer:

The answer to your question is 75 cm²

Explanation:

To solve this problem, we need to use the Pascal's principle that states that the pressure in a point is equal to the pressure in a second point.

$\frac{F1}{A1} = \frac{F2}{A1}$

Process

1.- Solve for A2

$A2 = \frac{F2A1}{F1}$

2.- Substitution

$A2 = \frac{450N x 25 cm2}{150 N}$

3.- Simplification and result

$A2 = \frac{11250}{150}$

A2 = 75 cm²

8 0

4 years ago