PHYSICS HIGH SCHOOL

The frequency of a purple photon is 7.14×10^14 Hz. Which equation should be used to solve for the wavelength of the photon?

Answers

Answer 1
Answer:

Answer:

420.17 nm

Explanation:

Given:

f = 7.14 × 10¹⁴Hz

c = 3 × 10⁸ m/s

c = fλ

λ = c/f

  =(3*10^8)/(7.14*10^(14))

  =(3)/(7.14)*10^((8-14))

  =0.42017*10^(-6)

  =420.17*10^(-9)

  = 420.17 nm

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Geologists cannot yet predict earthquakes because

Answers

Geologists cannot yet predict earthquakes because the earthquakes caused by the movement of plates do not have the precise time and place when will it moves.

25pts The diagram shows the positions of the sun, moon and Earth during spring tides, when the high tides are at their highest and low tides at their lowest. What is it about these positions that causes these high and low tides?

Answers

The moon and sun are primarily responsible for the rising and falling of ocean tides, but, for any particular spot on Earth’s surface, the height of the tides and their fluctuation in time also depends on the shape of your specific beach, the angle of the seabed leading up to your beach, plus your larger coastline and the prevailing ocean currents and winds. 

Answer:

The moon, is wahts causing athe high and low tide  to rise and fall is like for expmale the water is metal, and the moon is metal (thats all I remembre in class )

Superposition of two wave crests produces

Answers

Superposition of two wave crests produces addtion (increase) of the crests.

A pillow is thrown downward with an initial speed of 6 m/s.After 4 seconds, the pillow's velocity is m/s. (g= -9.8m/s2)

Answers

The velocity of the pillow after 4 seconds is -45.2 m/sec and this can be determined by using the velocity formula.

Given :

A pillow is thrown downward with an initial speed of 6 m/s.

The equation of velocity is used in order to determine the pillow's velocity after 4 seconds.

v = u + at

where 'v' is the final velocity, 'a' is the acceleration due to gravity, 'u' is the initial velocity, and 't' is the time.

Now, substitute the known terms in the above equation in order to determine the pillow's velocity after 4 seconds.

v = -6 - 9.8 * (4)

Simplify the above equation.

v = -6 - 39.2

v = -45.2 m/sec

So, the velocity of the pillow after 4 seconds is -45.2 m/sec.

For more information, refer to the link given below:

brainly.com/question/13639113

Given :

Initial velocity, u = -6 m/s.

Time taken, t = 4 seconds.

Acceleration due to gravity, g = -9.8\ m/s^2.( Here negative sign means downward direction )

To Find :

Velocity after 4 seconds.

Solution :

By equation of motion.

v = u + at

Here , a = g.

v = u + gt

v = -6 + (-9.8)×4

v = -6 + (-39.2)

v = -45.2 m/s

Therefore, velocity after 4 seconds is -45.2 m/s.

Hence, this is the required solution.

Heated air rises, cools, then falls. Air near the heater is replaced by cooler air, and the cycle repeats. A) Conduction B) Convection C) Radiation

Answers

The answer is A : conduction

Which type of tape is used to round sharp edges on splices using larger conductors?a. Friction tape
b. Rubber tape
c. Cotton tape
d. Plastic tape

Answers

Rubber tape is used to round sharp edges

Answer:

Explanation:

the answer is rubber tape not friction tape
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