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4 years ago

What is a Cartesian diver? What does it do?

Physics

1 answer:

Len [333]4 years ago

3 0

a cartesian diver is a classic science experiment which demonstrates the principle of buoyancy and the ideal gas law.

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A laboratory dish, 20 cm in diameter, is half filled with water. One at a time, 0.50/µL drops of oil from a micropipette are dro

aleksklad [387]

Answer:

n = 1.45

Explanation:

Given:

- Diameter of the dish d = 0.2 m

- Volume per drop V/drop = 0.5 uL

- wavelength of incident light λ = 600 nm

- minimum intensity @ 13 drops

- refractive index of oil : n

Find:

What is the index of refraction of the oil?

Solution:

- Destructive interference can be seen @ 13 drops. So we will use the relation of destructive interference:

n = m*λ / 2*t

- Compute the thickness of the film.

Volume of film = 0.5*13*10^-9 = 6.5*10^-9 m^3

Volume of cylinder = pi*d^2 / 4 * t

pi*d^2 / 4 * t = 6.5*10^-9 m^3

t = 4*(6.5*10^-9 )/ pi*0.2^2 = 2.069*10^-7 m

- Use the given relation @ m = 1:

n = λ / 2*t

n = (600*10^-9) / 2*2.069*10^-7

n = 1.45

3 0

4 years ago

A pair of parallel plates is charged by a 24-V battery. How much work is required to move a particle with a charge of-3.0uC from

densk [106]

Answer:

$72\times 10^{-6}$ J

Explanation:

$V$ = Voltage of the battery = Potential difference across the plates of capacitor = 24 Volts

$q$ = Amount of charge being moved from one plate to another = 3 μC = 3 x 10⁻⁶ C

$W$ = amount of work done in moving the charge

Work done is given as

$W = q V$

$W = (3\times 10^{-6})(24)$

$W = 72\times 10^{-6}$ J

3 0

3 years ago

Read 2 more answers

Using the solar constant, estimate the rate at which the whole Earth receives energy from the Sun. (Hint: Think about the area o

harkovskaia [24]

Answer:

1.475×10²⁴ W

Explanation:

I = Solar constant of the sun = 1362 W/m² (measured using satellites with value 1.3608 ± 0.0005 kW/m² the error is due to fact that solar output is not always constant)

r = Radius of earth = 6371 km = 6371000 m (mean radius)

A = Area of earth = (4/3)×π×r³

=(4/3)×π×6371000³ = 1.083×10²¹ m²

P = I×A

⇒P = 1362×1.083×10²¹

⇒P = 1.475×10²⁴ W

∴ Rate at which the whole Earth receives energy from the Sun is 1.475×10²⁴ W

4 0

3 years ago

What would happen to the particles in this box if it lost heat energy?

Alika [10]

Answer:

Explanation:

i think its A

6 0

3 years ago

Two students, Nora and Allison, are both the same age when Allison hops aboard a flying saucer and blasts off to achieve a cruis

White raven [17]

Answer:

23.38 years

Explanation:

Speed of Allison = 0.83 c = v

Time passed according to Allison = Δt = 29.5 years

Time dilation

$\Delta t'=\frac{\Delta t}{\sqrt{1-\frac{v^2}{c^2}}}\\\Rightarrow \Delta t'=\frac{29.5}{\sqrt{1-\frac{0.83^2c^2}{c^2}}}\\\Rightarrow \Delta t'=\frac{29.5}{\sqrt{1-0.83^2}}\\\Rightarrow \Delta t'=52.88\ years$

For Nora 52.88 years would have passed

So, their age difference would be 52.88-29.5 = 23.38 years

6 0

4 years ago