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kiruha [24]
3 years ago
9

Helpppppp pleaseeeeee

Physics
1 answer:
MaRussiya [10]3 years ago
5 0

Answer:

A - Sublimation

B - Evaporation

C - Melting

Explanation:

The state of change present in A is Sublimation. Dry Ice is the most common example of Sublimation of everyday life

The state of change present in B is evaporation. Boiling water into water vapor is something that anyone can see.

The state of change present in C is called Melting. Think of Ice melting into a pool of water as the ice heats up.

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At its widest point, the diameter of a bottlenose dolphin is 0.50 m. Bottlenose dolphins are particularly sleek, having a drag c
fiasKO [112]

Answer:

497.00977 N

3742514.97005

Explanation:

\rho = Density of water = 1000 kg/m³

C = Drag coefficient = 0.09

v = Velocity of dolphin = 7.5 m/s

r = Radius of bottlenose dolphin = 0.5/2 = 0.25 m

A = Area

Drag force

F_d=\frac{1}{2}\rho CAv^2\\\Rightarrow F_d=\frac{1}{2}\times 1000 \times 0.09(\pi 0.25^2)7.5^2\\\Rightarrow F_d=497.00977\ N

The drag force on the dolphin's nose is 497.00977 N

at 20°C

\mu = Dynamic viscosity = 1.002\times 10^{-3}\ Pas

Reynold's Number

Re=\frac{\rho vd}{\mu}\\\Rightarrow Re=\frac{1000\times 7.5\times 0.5}{1.002\times 10^{-3}}\\\Rightarrow Re=3742514.97005

The Reynolds number is 3742514.97005

8 0
3 years ago
You could use an elevator or the stairs to lift a box to tenth floor.which has greater power?
erastova [34]

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An elevator gets its power from the electric motors that lift it.  All YOU
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Thorium ____ has 90 protons and 137 neutrons.
Paha777 [63]

Answer:

Thorium 227 (also known as Radioactinium)

5 0
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The answer is Monocline. And I checked it, it's correct.

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