3 years ago

Rust forms when what reacts with chemicals in rocks

Physics

2 answers:

Sav [38]3 years ago

6 0

Rust forms when oxygenreacts with chemicals in rocks, and that is often the case

leonid [27]3 years ago

6 0

With chemical weathering<span> of rock, we see a </span>chemical<span> reaction happening between the minerals found in the rock and rainwater. </span>

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Answer:

51.2 J, 86.2 J, 137.4 J

Explanation:

The kinetic energy of the ball is given by:

$K=\frac{1}{2}mv^2$

where

m = 0.40 kg is its mass

v = 16 m/s is its speed

Substituting,

$K=\frac{1}{2}(0.40)(16)^2=51.2 J$

The potential energy of the ball is given by

$U=mgh$

where

m = 0.40 kg

$g=9.8 m/s^2$ is the acceleration of gravity

h = 22 m is the heigth of the cliff

Substituting,

$U=(0.40)(9.8)(22)=86.2 J$

Finally, the total mechanical energy is the sum of the kinetic energy and the potential energy:

$E=K+U=51.2 + 86.2=137.4 J$

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nadezda [96]

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Why is gravitational forces equal for everyone?

Alik [6]

That equation is Newton's universal law of gravitation. ... Any two masses exert equal-and-opposite gravitational forces on each other. If we drop a ball, the Earth exerts a gravitational force on the ball, but the ball exerts a gravitational force of the same magnitude (and in the opposite direction) on the Earth.

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A magnifying glass or a hand lens is a bi-convex lens. It is convex on both sides, meaning that the glass is curved outward to

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Answer:

Refracted

Explanation:

If on UsaTestPrep

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A note of frequency 2000Hz has a velocity of 400 ms! What is the wavelength of the note?

Rudik [331]

Answer:

Explanation:

frequency=c/λ

c=400m/s

putting values

2000=400/λ

λ=0.2m

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3 years ago

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