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3 years ago

What is the period of a wave with a speed of 20.0 m/s and a frequency of 10.0 Hz?

Physics

1 answer:

Delvig [45]3 years ago

4 0

im confused hold on imma send you a link to the answerExplanation:

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What is the frequency of microwaves of wavelength 3 cm?

tiny-mole [99]

Answer:

10 GHz

Explanation:

Applying,

v = λf.................... Equation 1

Where v = speed of microwave, λ = wavelength, f = frequency.

make f the subject of the equation

f = v/λ................ Equation 2

Note: Microwave is an electromagnetic wave, and all electromagnetic wave have the same speed, which is 3×10⁸ m/s

From the question,

Given: λ = 3 cm = 0.03 m

Constant; v = 3×10⁸ m/s

Substitute these values into equation 2

f = 3×10⁸/(0.03)

f = 10¹⁰ Hz

f = (10¹⁰/10⁹) GHz

f = 10 GHz

4 0

2 years ago

Select the correct answer.

Juliette [100K]

Answer: the answer is C

Explanation:

4 0

3 years ago

Could anyone help with number 9?

Alisiya [41]

The answer would be A

3 0

3 years ago

easy bio A person is standing on a level floor. His head, upper torso, arms, and hands together weigh 438 N and have a center of

goblinko [34]

Answer:

1.034 m above the floor

Explanation:

The location of center of body for a compound body, when the weights are given is calculated as:

$\bar x = \frac{W_1x_1+W_2x_2+W_3x_3+W_4x_4+W_5x_5+.......+Wnx_n}{W_1+W_2W_3W_4W_5+.....+W_n}$

where,

$\bar x$ is the center of gravity of the entire body

W = weight of the individual body

x = center of gravity of the individual body

Thus on substituting the values we get,

$\bar x = \frac{438\times 1.28+144\times 0.760+87\times 0.250}{438+144+87}$

$\bar x = \frac{691.83}{669}$

$\bar x =1.034m$

Hence, the center of gravity of the entire body lies 1.034 m above the floor

6 0

3 years ago

Consider the reaction.

Free_Kalibri [48]

2.1 x 102

Is the correct solution for this problem

5 0

3 years ago

Read 2 more answers