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beks73 [17]
3 years ago
15

What is velocity Write its formula

Physics
2 answers:
fenix001 [56]3 years ago
5 0
Velocity (v) is a vector quantity that measures displacement (or change in position, Δs) over the change in time (Δt), represented by the equation
v = Δs/Δt.
stellarik [79]3 years ago
5 0

Answer:    

Explanation:

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3 years ago
What does it mean when someone says that radio waves can be modulated?
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Answer:

It means that information can be added to the radio waves and can be carried through electronic or optical signals.

Explanation:

Modulation is the process of converting data into radio waves by adding information to an electronic or optical carrier signal. A carrier signal is one with a steady waveform -- constant height, or amplitude, and frequency

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2 years ago
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What does it mean to dissolve something
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Suppose the voltage source for a series RL-circuit were given as V0sin(ωt) instead of V0cos(ωt). Write an expression for the cur
Gala2k [10]

Answer:

Explanation:

This is an RL circuit, therefore:

Impedance; z = \mathbf{\sqrt{R^2+L^2}}

\mathbf{z = \sqrt{R^2+(Lw)^2}}

Current amplitude

\mathbf{I_o = \dfrac{V_o}{z}} \\ \\  \mathbf{I_o = \dfrac{V_o}{\sqrt{R^2+L^2\omega ^2}}}

a)

Given that:

V_o = 1.9 \ V \\ \\ \omega= 51 \ rad/s\\\\ R = 21 \Omega \\ \\  L = 0.52 H

∴

I_o= \dfrac{1.9}{\sqrt{21^2+(0.52\times 51)^2}}

\mathbf{I_o= 0.0562}  \\ \\ \mathbf{I_o = 56.2 \ mA}

b)

Phase constant :

tan  \ \phi = \dfrac{L \omega}{R } \\ \\  tan  \ \phi = \dfrac{0.52 \times 51}{21} \\ \\  tan \phi = 1.263

\text{Phase constant : }\phi = tan^{-1} (1.263)   \\ \\  \phi = 51.6^0\\ \\\text{To radians} \phi  = 51.6 \times \dfrac{\pi}{180} \\ \\  \phi = 0.287 \pi \\ \\ \mathbf{\phi = 0.9 \ rad}

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3 years ago
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Answer:

C. If the masses of the objects increase, then the force between them also increases.

Explanation:

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