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3 years ago

On a wave, the distance between two points that have identical status is termed by ______

Physics

2 answers:

natka813 [3]3 years ago

8 0

D.) wavelength. Velocity involves speed, frequency is how fast the wave vibrates, and amplitude is sound.

Sedaia [141]3 years ago

5 0

D wavelength

velocity deals w/ speed
frequency/amplitude deals with sound

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The acceleration of a baseball pitcher's hand as he delivers a pitch is extreme. For a professional player, this acceleration ph

SashulF [63]

Answer:

116 N.

Explanation:

Given,

mass of the ball, m = 0.145 Kg

initial speed = 0 m/s

Final speed = 40 m/s

time = 50 ms = 0.05 s

Force is equal to change in momentum per unit time

$F = \dfrac{m\Delta v}{\Delta t}$

$F = \dfrac{0.145(40-0)}{0.05}$

F = 116 N

Force of the pitcher hand on the ball is equal to 116 N.

4 0

3 years ago

Are photons causing the electrons to flow off of the target? ( the target is calcium)

Sliva [168]

Answer:

The energy lost by the atoms is given off as an electromagnetic wave. ... even if it's not very intense, will always cause electrons to be emitted.

Explanation:

5 0

3 years ago

A tall cylinder with a cross-sectional area 12.0 cm² is partially filled with mercury; the surface of the mercury is 5.00 cm abo

JulijaS [17]

Answer:

$V = 816 cm^3$

Explanation:

As we know that gauge pressure of the fluid at the bottom of the cylinder is given as

$P = \rho g h$

now we know that pressure at the bottom is double when water is poured on the mercury

So we have

$\rho_{hg} g h_1 = \rho_w g h_2$

so we will have

$13.6 \times 5 = 1 \times h$

so we have

$h = 68 cm$

now the volume of the water added to it is given as

$V = h A$

$V = (68 cm)(12 cm^2)$

$V = 816 cm^3$

6 0

4 years ago

Physics help please. Topic is free fall.

Anastasy [175]

If I ask you to tell me the acceleration of gravity on Earth, you'll tell me a number. That acceleration of gravity is always that number, no matter WHEN you measure it. t doesn't change. So the graph of it is the number. The graph of a number is a horizontal line. Its equation is:

. Y = (the number) .

The correct choice is ' A ' .

8 0

3 years ago

If light is used to promote the electron, what are the selection rules for the initial and final spin and orbital angular moment

loris [4]

Answer:

(1) $\Delta S=0$

(2) $\Delta L=0, +1,-1$ but $J=0 to J=0$ transition not allowed.

Explanation:

Atoms can be described by the quantum number n, spin quantum number S, angular momentum quantum number L, and total angular momentum quantum number J. Based on approximation Russel- Saunders electron coupling, the atomic term symbol can be written as $L_{J} ^{2S+1}$ .

The conditions or selection rule to promoting the electron are discussed below:

(1) The total spin should not change that is $\Delta S=0$ .

(2) The total angular momentum change should be, $\Delta L=0, +1,-1$ but $J=0 to J=0$ transition not allowed.

8 0

4 years ago