3 years ago

Vascular plants can be divided into three categories. These categories are

Physics

1 answer:

Evgesh-ka [11]3 years ago

6 0

I believe the answer here is <span>C).seedless, seed (nonflowering), and seed (flowering).</span><span>
</span>

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Answer:

time taken by the wave to reach the person is 0.2 s

Explanation:

As we know that the speed of the wave is given as

$v = \lambda f$

here we know that the wavelength of the wave is

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$f = 10 Hz$

now speed of the wave is given as

$v = 10(2.5)$

$v = 25 m/s$

Now time taken by the wave to reach 5 m distance is

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2 years ago

When the distance increases, the electrostatic force____; we call this relationship proportional

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Answer:

I think decreases inversely

Explanation:

the third

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navik [9.2K]

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A box sliding on a horizontal frictionless surface runs into a fixed spring, compressing it a distance x1 from its relaxed posit

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Answer:twice of initial value

Explanation:

Given

spring compresses $x_1$ distance for some initial speed

Suppose v is the initial speed and k be the spring constant

Applying conservation of energy

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$\dfrac{1}{2}mv^2=\dfrac{1}{2}kx_1^2----1$

When speed doubles

$\dfrac{1}{2}m(2v)^2=\dfrac{1}{2}kx_2^2----2$

divide 1 and 2

$\dfrac{1}{4}=\dfrac{x_1^2}{x_2^2}$

$x_2=2x_1$

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Explanation:

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