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ivann1987 [24]
3 years ago
12

If the color red has a wavelength of 7.0 107 m. its frequency is

Physics
2 answers:
stepan [7]3 years ago
7 0
I think it’s 5.0.1014
kodGreya [7K]3 years ago
5 0

Answer:

4.3⋅1014 is the answer

Explanation:

λf = c = 2.998e8 m/s (speed of light in vacuum)

f = 2.998e8 / 7e-7 = 4.28e14 Hz (a)

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Alla [95]

Answer:

a.Distance = 150 m

b. Displacement = 50 m

Time lapsed = 5 seconds

Explanation:

a. Distance is the change in the position of an object.

The distance covered by the car = 100 + 50

                                                   = 150 m

b. Since displacement is a vector quantity,

Displacement of the car = 100 - 50

                                        = 50 m due east

c. Time elapsed is the time taken for the motion of the car starting from when its starts to when it stops.

Thus, the time elapsed = 4 + 1

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2 years ago
What is the net force of a 25 g object with an acceleration of 3 m/s^2? 100PTS
gayaneshka [121]

Explanation:

Force=Mass×acceleration

force=25×3

force=75N

5 0
3 years ago
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a bicycle accelerates at 1 m/s² from an initial velocity of 4 m/s² for 10s. Find the distance moved by it during this interval o
BaLLatris [955]

Answer:

90 m

Explanation:

Acceleration, a=\frac {v-u}{t} where v and u are final and initial velocities respectively, t is the time taken

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Making s the subject then

s=\frac {v^{2}-u^{2}}{2a}=\frac {14^{2}-4^{2}}{2\times 1}=90 m

6 0
2 years ago
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Ivenika [448]

950kg. It is W=mg. therefore, mass= W/g which is W/10

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Pani-rosa [81]

Answer:

dababy

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dababy is the best and that's the answer

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