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3 years ago

The Doppler effect related change in wave frequency to what?

Chemistry

1 answer:

Irina18 [472]3 years ago

8 0

Answer:

Relative motion of source and observer.

Explanation:

Doppler Effect : It is the change in the observed frequency of the wave due to<em><u> relative motion of the source and object </u></em>.

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Measurements indicate that boat A has twice the kinetic energy of boat B of the same mass. How fast is boat A traveling if boat

tresset_1 [31]

Answer:

The speed of the boat-A is 47.84 knots.

Explanation:

Mass of boat-A = m

Mass of boat-B = m

Kinetic energy if the boat-A = E

Kinetic energy if the boat-B = E'

Velocity of boat-A = v = ?

Velocity of boat-B = v'= 34 knots = 34 nautical miles /hour

1 knot = 1 nautical mile per hour

1 nautical mile = 6,076 feet

34 nautical miles /hour = 34 nautical miles /hour × 6,076 ft/miles = 205,564 ft/hour

Kinetic energy of boat-A is given by :

$E=\frac{1}{2}mv^2$

Kinetic energy of boat-A is given by :

$E'=\frac{1}{2}mv^2$ ..[1]

Kinetic energy of boat-B is given by :

$E'=\frac{1}{2}mv'^2$ ..[2]

E= 2E' (given)

[1] ÷ [2]

$\frac{E}{E'}=\frac{\frac{1}{2}mv^2}{\frac{1}{2}mv'^2}$

$\frac{2E'}{E'}=\frac{v^2}{v'^2}$

$2\times v'^2=v^2$

$2 \times (205,564 ft/hour)^2=v^2$

$8.4513\times 10^{10} ft^2/hour^2=v'^2$

$v'=290,711.4 ft/hour=\frac{290,711.4}{6,076} nautical mile/hour$

v' = 47.84 knots

The speed of the boat-A is 47.84 knots.

3 0

4 years ago

What gas is this?

Lilit [14]

Answer:

Carbon Monoxide

Explanation:

Everything you listen matches everything of Carbon Monoxide

7 0

3 years ago

Please help easy chemistry

Rzqust [24]

Answer:

The answer to your question is the third option, atoms of each lose one electron to achieve stability.

Explanation:

a) The first option is incorrect, those elements are extremely reactive and can explode.

b) The option is also incorrect, metalloids are located in groups 3A, 4A OR 5A in the periodic table.

c) This option is correct

d) These elements have 1 valence electron, this option is wrong.

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3 years ago

Air contains maximum amount of?

melisa1 [442]

Nitrogen by 78 percentage.

7 0

4 years ago

Molecular formula: C19H16

eimsori [14]

Is the something missing from the question

8 0

3 years ago