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4 years ago

Who is this guy and what did he do?

Physics

1 answer:

blsea [12.9K]4 years ago

6 0

According to Google, that is Tyler the Creator. He participates in Camp Flog Gnaw which claims to "<span>got a better, more star-studded </span>lineup<span> than most rap festivals can offer." He is also a rapper and appears to be a pretty sick dude.</span>

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You've recently read about a chemical laser that generates a 20.0-cm-diameter, 22.0 MW laser beam. One day, after physics class,

Setler [38]

Answer:

0.3847 m/s

Explanation:

$I$ = Intensity = $\dfrac{P}{A}=\dfrac{P}{\pi r^2}$

d = Diameter = 20 cm

r = Radius = $\dfrac{d}{2}=\dfrac{20}{2}=10\ cm$

c = Speed of light = $3\times 10^8\ m/s$

s = Distance = 100 m

P = Power = 22 MW

Pressure due to the laser is given by

$P_r=\dfrac{I}{c}\\\Rightarrow P_r=\dfrac{P}{Ac}\\\Rightarrow P_r=\dfrac{P}{\pi r^2c}\\\Rightarrow P_r=\dfrac{22\times 10^{6}}{\pi 0.1^2\times 3\times 10^8}\\\Rightarrow P_r=2.33427\ N/m^2$

Force is given by

$F=P_rA\\\Rightarrow F=2.33427\times \pi 0.1^2\\\Rightarrow F=0.07333\ N$

Acceleration is given by

$a=\dfrac{F}{m}\\\Rightarrow a=\dfrac{0.07333}{99}\\\Rightarrow a=0.00074\ m/s^2$

Speed of the block would be

$v=\sqrt{2as}\\\Rightarrow v=\sqrt{2\times 0.00074\times 100}\\\Rightarrow v=0.3847\ m/s$

The speed of the block is 0.3847 m/s

5 0

3 years ago

Which of the following examples does not illustrate Newton's first law of motion?

Stella [2.4K]

Answer: B

Explanation: The rocket is accelerating the the spacecraft. Accelerating relates to Newtons Second Law of Motion.

6 0

3 years ago

There are five different types of muscles in exercise physiology.

9966 [12]

Answer: The answer is B) False

Explanation: There are only three muscle types in the exercise physiology.

Skeletal Muscle

Smooth Muscle

Cardiac Muscle

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3 years ago

Who wants to play Minecraft education edition with me the IP Address is 192.168.1.12

LekaFEV [45]

Answer:

Ok hold up

Explanation:

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3 years ago

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Why is moon is non-lomis back

qwelly [4]

Explanation:

At night, when that part of Earth is facing away from the sun, space looks black because there 8s no nearby bright source of light like the sun , to be scattered

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4 years ago