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3 years ago

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Which statement describes the formation of a nebula? A. An elliptical flattened disk begins. B. A bulging core with irregular st

ars around it forms. C. A large flattened core at the center contracts. D. Gases from a dead star gather and contract.

1 answer:

max2010maxim [7]3 years ago

4 0

D is the answers Gases from a dead star gather and contract.

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Calculate the height of a cliff if it takes 2.35 s for a rock to hit the ground when it is thrown straight up from the cliff wit

pantera1 [17]

Answer:

height of a cliff is 45.86 m

Explanation:

u=8 m/s

t=2.35 s

the height of the cliff is

$S=ut+\frac{1}{2} at^2\\S=8\times2.35+\frac{1}{2} \times 9.8 \times 2.35^2\\S=45.86 m$

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3 years ago

Please Help!!! I'll make Brainliest

il63 [147K]

Answer:

Float.

Explanation:

The formula we are going to use is <span>ρ=<span>mV</span></span>
=> where ρ is the density in <span><span>gm</span>L</span>, m is the mass in grams, and V is the volume in <span>mL</span>.

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3 years ago

Whar are the types of energy associated with the microwave

Naily [24]

Type motion examples and subtypes
electromagnetic radiation disturbance propagating through electric and magnetic fields (classical physics) or the motion of photons (modern physics) radio waves, microwaves, infrared, light, ultraviolet, x-rays, gamma rays

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3 years ago

If you are building a clock by using a pendulum's oscillations to keep time and you find the period is a little too small (the c

Leviafan [203]

Time period of pendulum is given by

$T = 2\pi\sqrt{\frac{L}{g}}$

Here,

L is length

g is acceleration due to gravity

Therefore we can determine that the period of the pendulum is directly proportional to the square root of the length of the rope.

$T \propto \sqrt{L}$

Therefore, it is necessary to increase the length of the rope to increase the period so that it counts the seconds more slowly. The correct answer is A.

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3 years ago

Consider a traveling wave described by the formula

Harrizon [31]

Answer:

The wave is traveling in the +x direction.

Explanation:

The equation of a wave is given by the formula as :

$y(x,t)=A\ sin(kx-\omega t)$

Here,

A is the amplitude of wave

$(kx-\omega t)$ is the phase of wave

$\omega$ is the angular frequency of the wave

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$y(x,t)=A\ sin(\omega t-kx)$

Here, the propagation constant is negative. So, the wave is moving in +x direction. Hence, the correct option is (a).

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4 years ago