3 years ago

8th grade science help help

Physics

1 answer:

Maslowich3 years ago

7 0

Answer: A

Explanation:

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To measure the height of a building without a ruler or tape measure, an engineer drops a rock off the top of the building and fi

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The relevant equation we can use in this problem is:

h = v0 t + 0.5 g t^2

where h is height, v0 is initial velocity, t is time, g is gravity

Since it was stated that the rock was drop, so it was free fall and v0 = 0, therefore:

h = 0 + 0.5 * 9.81 m/s^2 * (4.9 s)^2

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2 years ago

What is the correct name for this formula BaCI 2?

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BaCI2 stands for Barium Chloride.

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Only the sun and other stars in space generate these kinds of waves:

Reika [66]

Answer:

<h2>Ultraviolet Waves.</h2>

Explanation:

The Sun emits waves called "Solar Waves", which have a wavelengths between 160 and 400 nanometers. According to the electromagnetic spectrum, these waves are defined as Ultraviolet, which have a frequency around the order of $10^{16}$ , which is really intense and high energy.

Therefore, the answer is Ultraviolet Waves.

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3 years ago

1–Find the components of each vector

navik [9.2K]

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2 years ago

Dimension for electric charge

Artemon [7]

Answer:

Explanation:

Dimensions of current = A

Dimensions of time = T

Current = Charge / time

Therefore Charge = Current × time

[Charge] = [Current] × [time]

= AT

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2 years ago