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2 years ago

Any girls come to talk on insta or here

Physics

1 answer:

xxMikexx [17]2 years ago

7 0

Answer:

Explanation:

Sorry hun, I'm a lesbian lol

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The population in the United States in 2015 was 321 million people. It is projected to increase to 438 million people by the yea

jolli1 [7]

Answer:

Haven't done this but I think it will increase by 73.29% not too anyone correct me if I'm worng

3 0

2 years ago

The New England Merchants Bank Building in Boston is 152 m high. On windy days it sways with a frequency of 0.17 Hz, and the acc

aksik [14]

Answer:

d = 8.4 cm

Explanation:

In order to calculate the amplitude of oscillation of the top of the building, you use the following formula for the max acceleration of as simple harmonic motion:

$a_{max}=A\omega^2$ (1)

A: amplitude of the oscillation

w: angular speed of the oscillation = 2 $\pi$ f

f: frequency = 0.17Hz

The maximum acceleration of the top of the building is a 2.0% of the free-fall acceleration. Then, you have:

$a_{max}=0.02(9.8m/s^2)=0.196\frac{m}{s^2}$

Then, you solve for A in the equation (1) and replace the values of the parameters:

$A=\frac{a_{max}}{\omega^2}=\frac{a_{max}}{4\p^2i f^2}\\\\A=\frac{0.196m/s^2}{16\pi^2(0.17Hz)^2}\\\\A=0.042m=4.2cm$

The total distance, side to side, of the oscilation of the top of the building is twice the amplitude A. Then you obtain:

d = 2A = 2(4.2cm) = 8.4cm

4 0

2 years ago

Based on experimental observations, the acceleration of a particle is defined by the relation a = -(0.1 + sin x/b), where a and

Fiesta28 [93]

Answer:

Velocity,v = 0.323 m/s

Explanation:

The acceleration of a particle is given by :

$a=-(0.1+sin\dfrac{x}{b})$

b = 0.8 m when x = 0

Since, $a=v\dfrac{dv}{dx}$

$v\dfrac{dv}{dx}=-(0.1+sin\dfrac{x}{b})$

$\int{v.dv}=\int{-(0.1+sin\dfrac{x}{b})}.dx$

$\dfrac{v^2}{2}=-[0.1x-0.8cos\dfrac{x}{0.8}]+c$

At x = 0, v = 1 m/s

$\dfrac{1}{2}=0.8+c$

$c=-0.3$

$\dfrac{v^2}{2}=-[0.1x-0.8cos\dfrac{x}{0.8}]-0.3$

At x = -1 m

$\dfrac{v^2}{2}=-0.1(-1)+0.8cos\dfrac{(-1)}{0.8}-0.3$

${v^2}=0.1045$

v = 0.323 m/s

So, the velocity of the particle is 0.323 m/s. Hence, this is the required solution.

8 0

2 years ago

During a thunderstorm Benjamin Franklin attempted to collect electricity from the air in a _____.

Karolina [17]

Your answer would be : Leyden jar.

4 0

2 years ago

Stars which never disappear below the horizon are called__stars. A. Polaris B. visible C. constellation D. circumpolar

miss Akunina [59]

Answer:

D. circumpolar

Explanation:

A circumpolar star is a star, as viewed from a given latitude on Earth, that never sets below the horizon due to its apparent proximity to one of the celestial poles.

-Wikipedia

5 0

2 years ago

Any girls come to talk on insta or here​

Any girls come to talk on insta or here