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kodGreya [7K]
3 years ago
14

you throw a rock with a horizontal velocity at 36.6 m/s out a window that is 29.5 m above the ground. What was it’s total time i

n the air?

Physics
1 answer:
ANEK [815]3 years ago
4 0
29.5-4.9x^2= your answer
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radio waves travel at the speed of light, 3 x 10^8 m/s. the wavelength of a radio wave record is 200,000,000 hz is?
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Answer:

1.5m

Explanation:

Speed of waves is given as the product of the wavelength and frequency. Sometimes when frequency is not given but the period is given, we get the frequency as the reciprocal of the period. The speed of waves is given in m/s, wavelength in m while frequency in Hz.

Speed, s= fw and making w the subject of formula,

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Substituting 300, 000, 000 m/s for s and 200, 000, 000 for f then we obtain that

w=\frac {300000000}{200000000}=1.5 m

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A sound wave has a wavelength of 3.0m. The distance from a compression center to the adjacent rarefaction center is:
antiseptic1488 [7]

Answer:

3 m

Explanation:

It is given that,

The wavelength of a sound wave is 3 m.

We need to find the distance from a compression center to the adjacent rarefaction.

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Two point charges of +2.50 x 10^-5 C and -2.50 x 10^-5 C are separated by 0.50m. Which of the following describes the force betw
Marizza181 [45]

Answer:

Explanation:

Q1 = +2.50 x 10^-5C and Q2 = -2.50 x 10^-5C, r = 0.50m, F=?

Using Coulomb's law:

F = 1/(4πE) x Q1 x Q2/ r^2

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Therefore,

F = 9x 10^9 x 2.50 x 10^-5 x2.50 x

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F= 5.625/ 0.25

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Thanks.

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3 years ago
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