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2 years ago

What is the energy of a photon of blue light with a frequency of 6.53 × 10¹4 Hz?

Physics

1 answer:

shusha [124]2 years ago

3 0

Answer:

V = 6.53 × 10^14

h = 6.626 × 10^-34

E = hV

E = (6.626 × 10^-34) (6.53 × 10^14)

E = 4.33 × 10^-19

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3 years ago

Lars is standing near the edge of a 90-meter cliff. He throws a ball upward, but does not catch it, and it falls to the bottom o

Kipish [7]

Answer:

c. 43 m/s

Explanation:

Given the following data;

Displacement, S = 90 meters

Time, t = 5.55 seconds

To find the initial velocity;

We would use the second equation of motion given by the formula;

$S = ut + \frac {1}{2}at^{2}$

Where;

S represents the displacement or height measured in meters.

u represents the initial velocity measured in meters per seconds.

t represents the time measured in seconds.

a represents acceleration measured in meters per seconds square.

We know that acceleration due to gravity is -9.8m/s² because the direction is downward.

Substituting into the equation, we have;

$90 = u*5.55 + \frac {1}{2}*(-9.8)*5.55^{2}$

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Rearranging the equation, we have;

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3 years ago

A ship is to reach a place 10° south of west. In what direction should it be steered if declination at the place is 17° west?.

Readme [11.4K]

The direction is 7⁰ from west to the south.

We need to know about the degree and direction to solve this problem. The angle between west and south is 90⁰.

From the question above, we know that

Position = 10⁰ south of west

Destination = 17⁰ south of west

Hence, the direction of the ship should be

Direction from west = Destination - Position

Direction from west = 17⁰ - 10⁰

Direction from west = 7⁰

The direction is 7⁰ from west

Direction from south = Destination - Position

Direction from south = (90⁰ - 17⁰) - (90⁰ - 10⁰)

Direction from south = -7⁰

The direction is 7⁰ to the south.

Hence, the direction is 7⁰ from west to the south.

For more on directions at: brainly.com/question/6559935

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2 years ago

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lina2011 [118]

C iron oxide hope this helps

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3 years ago