At its maximum height <em>y</em>, the ball has zero vertical velocity. So we have
0² - (23 m/s)² = 2 * (-<em>g</em>) * <em>y</em>
where <em>g</em> = 9.80 m/s² is the acceleration due to gravity. Solve for <em>y</em> :
<em>y</em> = (23 m/s)² / (2 * (9.80 m/s²))
<em>y</em> ≈ 27 m
Answer:
more than 600 muscles
Explanation:
there are more than 600 muscles in a human body
Answer:
In a transverse wave, the wave energy causes the matter to move up and down or back and forth at right angles to the direction the wave travels, however in a compressional wave, matter in the medium moves forward and backward in the same direction that the wave travels. ... When amplitude increases, energy increases.
Explanation:
Answer:Hydrogen (sometimes)
Carbon
Nitrogen
Oxygen
Phosphorus
Sulfur
Selenium
Fluorine
Chlorine
Bromine
Iodine
Astatine
Tennessine (sometimes considered a halogen or metalloid)
Helium
Neon
Argon
Krypton
Xenon
Radon
Oganesson (possibly behaves as a "noble gas", except it won't be a gas under ordinary conditions)
Explanation:
Answer:
Explanation:
wavelength = velocity / frequency
= 3 x 10⁸ /5.25 x 10¹⁸
= .5714 x 10⁻¹⁰
= .05714 x 10⁻⁹
= .05714 nm .
b ) wave length in diamond
= wavelength in air / refractive index of diamond
= .05714 nm / 2.4
= .0238 nm .
c )
energy of one photon = hν where h is plank's constant and ν is frequency
= 6.6 x 10⁻³⁴ x 5.25 x 10¹⁸
= 34.65 x 10⁻¹⁶ J
= 34.65 x 10⁻¹⁶ / 1.6 X 10⁻¹⁹ eV
= 21.65 X 10³ eV .
d )
Energy does not change because its frequency does not change .