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Tanzania [10]
3 years ago
9

Please help me with this

Physics
1 answer:
amm18123 years ago
3 0

the answer might be 2.3 kilos

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A wave with a frequency of 14Hz has a wavelength of 3 meters. At what speed will this wave travel​
topjm [15]

Answer:

42 m/s

Explanation:

by definition of the velocity(speed) of a wave,

The velocity of light, v, is the product of its wavelength, λ , and its frequency, f.

V= fλ

frequency - number of occurances in a unit time

(check the graph)

velocity=frequency*wave.length\\=14Hz*3m\\=42 ms^{-1}

6 0
3 years ago
Niels Bohr's important discovery was?
Tom [10]
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7 0
3 years ago
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John shot a bullet from his rifle with a speed of 650 m/s. How much time is needed for the bullet to strike a target 3900 m away
7nadin3 [17]

Answer:

6 seconds

Explanation:

Just divide 3900 by 650 to get the amount of time.

8 0
2 years ago
You calibrate a set of automobile springs using a 25 kg car battery, attached to a rope that runs over a pulley, as shown in the
Goshia [24]

For an automobile spring using a 25 kg car battery, the spring constant is mathematically given as

K=4.08.3N/m

<h3>What is the spring constant?</h3>

Question Parameter(s):

a 25 kg car battery

The springs are pulled out by 0.06 meters

Generally, the equation for the Force  is mathematically given as

F=mg

Therefore

F=(25*9.8)

(25*9.8)=K(0.06)

K=4.08.3N/m

In conclusion, the spring constant

K=4.08.3N/m

Read more about Force

brainly.com/question/13370981

3 0
2 years ago
Mr John slides from rest a height of 12.2m down a smooth plane inclined at an angle 30° to the horizontal,.. calculate the dista
pentagon [3]

Answer:

24.4 m

Explanation:

sin 30 =  12.2 / x

x = 12.2 / sin 30    =  24.4 m

5 0
2 years ago
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