Physics

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Newton's First Law is important because it explains the basic concept of a body in motion. The first law implies that an object does not change the state of uniform motion or its state of rest unless a force acts on them. It helps us understand why seat belts, brakes, and handrails are needed. It tells us that a body resists changes already in motion due to inertia, which could lead to accidents without support.

Current through zener diode,

$l_z=\frac{24-10}{1}-\frac{10}{5}mA=12mA$              

Power across zener diode,

$P_z=V_z.l_z=10*12=120mW$          

Phase difference between the two waves,

$?=k{x}_0=6.28*3.5=7\pi rad$              

Amplitude of resulting wave,

$A=\sqrt[]{A_1^2+A_2^2+2A_1{A}_{2}cos?}$              

$=\sqrt[]{12^2+5^2+2*12*5*cos\left(7\pi \right)}$              

$\tau =MBsin\theta$

$=0.2*\frac{\sqrt[]{3}}{4}*{\left(0.1\right)}^2*20*10^{-3}*sin90°$

$=\sqrt[]{3}*10^{-5}Nm$              

$kx=\raisebox{1ex}{$\pi $}\!\left/ \!\raisebox{-1ex}{$2$}\right.$

$\Rightarrow 1.57x=\frac{\pi }{2}=\frac{3.14}{2}=1.57$

x = 1 cm

${\epsilon }_{max}=nBA\omega$

= 20 * 3.0 * 10^-2 * 3.14 * (0.08)² * 50

= 60.3 * 10^-2 V

${\omega }_{modulation}=2\pi f_{modulation}$        

$f_{modulation}=\frac{{\omega }_{modulation}}{2\pi }$

$=\frac{12560}{2\pi }$         

= 2000 Hz

= 2kHz

Inertia, as the First Law says, is the resistance to any change in motion. The law states that every object at rest stays at rest and one in motion stays in motion unless acted on by a force. For example, in a bus that starts or stops suddenly, your body resists the change, making you feel pushed backward or forward.

$P=\frac{2l}{C}P\to$ radiation pressure

$=\frac{2}{C}\left(\frac{1}{2}{\epsilon }_0{E}_0^{2}C\right)$

$\begin{array}{l}={\epsilon }_0{E}_0^2\\ =\left(8.85*10^{-12}\right)*{\left(200\right)}^2\\ =354*10^{-9}N/m^2\end{array}$