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never [62]
2 years ago
5

EASY BRAINLIEST PLEASE HELP!!

Physics
2 answers:
Soloha48 [4]2 years ago
7 0

Answer:

Solution given:

frequency[f]=x

velocity[V]=15000m/s

wave length=59m

we have

wave length=\frac{V}{f}

59m=\frac{15000}{x}

x=\frac{15000}{59}=254.Hz

frequency=254Hz

seropon [69]2 years ago
6 0

Answer:

look at the picture i have sent

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stealth61 [152]

Answer :

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(b) The distance covered by the car is, 150 m

Explanation :  

By the 1st equation of motion,

v=u+at ...........(1)

where,

v = final velocity = 5 m/s

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Now put all the given values in the above equation 1, we get:

5m/s=25m/s+a\times (10s)

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By the 2nd equation of motion,

s=ut+\frac{1}{2}at^2 ...........(2)

where,

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u = initial velocity  = 25 m/s

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Now put all the given values in the above equation 2, we get:

s=(25m/s)\times (10s)+\frac{1}{2}\times (-2m/s^2)\times (10s)^2

By solving the term, we get:

s=150m

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if i am correct rate it 5 star

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