3 years ago

Hydrogen is a colorless, tasteless, and odorless gas.

Physics

2 answers:

Serga [27]3 years ago

7 0

Answer:

This is true.

Explanation:

Crazy boy [7]3 years ago

4 0

Answer:

Hydrogen is a colorless, tasteless, and odorless gas.

(physical)

Hydrogen is very combustible in the presence of oxygen.

(chemical)

Hydrogen is very reactive with most elements.

(chemical)

Hydrogen is the least dense of all elements.

(physical)

Explanation:

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A tuning fork vibrating at 508 Hz falls from rest and accelerates at 9.80 m/s^2. How far below the point of release is the tunin

JulijaS [17]

Answer:

Explanation:

given,

tuning fork vibration = 508 Hz

accelerates = 9.80 m/s²

speed of sound = 343 m/s

observed frequency = 490 Hz

$f_s = f(\dfrac{v}{v-(-v_s)})$

$f_s = f(\dfrac{v}{v+v_s})$

$v_s = v[\dfrac{f_s}{f_o}-1]$

$= 343[\dfrac{508}{490}-1]$

$v_s=12.6 m/s$

distance the tunning fork has fallen

$y_1=\dfrac{v^2}{2a_y}$

$=\dfrac{12.6^2}{2\times 9.8}$

=8.1 m

now, time required for the observed will be

$t = \dfrac{8.1}{343} = 0.023 s$

now, for the distance calculation

$y_2 = u\ t + \dfrac{1}{2}at^2$

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