2 years ago

FIRST PERSON WILL BE MARKED BRAINLIEST! 50 POINTS!

Physics

1 answer:

Tomtit [17]2 years ago

4 0

Answer:

D- Strong and gravitational

Explanation:

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What is it called when velocity changes over time

natka813 [3]

Well,

When an object's velocity changes, we call it acceleration.

Acceleration: The time rate of change in an object's velocity

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3 years ago

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An 80-cm-long steel string with a linear density of 1.0 g/m is under 200 N tension. It is plucked and vibrates at its fundamenta

icang [17]

Answer:

Wavelength of the sound wave that reaches your ear is 1.15 m

Explanation:

The speed of the wave in string is

$v=\sqrt{\frac{T}{\mu} }$

where T= 200 N is tension in the string , $\mu$ =1.0 g/m is the linear mass density

$v=\sqrt{\frac{200}{1\times 10^{-3} }$

$v=447.2 m/s$

Wavelength of the wave in the string is

$\lambda =2L=2\times 0.8=1.6 m$

The frequency is

$f=\frac{v}{\lambda} \\f=\frac{447.2}{1.6}\\f=298.25 Hz$

The required wavelength pf the sound wave that reaches the ear is( take velocity of air v=344 m/s)

$\lambda=\frac{v_{air}}{f} \\\lambda=\frac{344}{298.25} \\\lambda=1.15 m$

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3 years ago

Find the net force produced by a 6 N and an 8 N when acting in same

tankabanditka [31]

Answer:

14 newtons is the answer

Explanation:

because if they act in the same direction they are added together

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2 years ago

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Physics Question (attached)

hammer [34]

Answer:

The answer is " $\bold{10.6 \ \ \frac{m}{s^2}}$ "

Explanation:

The Formula of acceleration:

$\bold{a= \frac{v-v_0}{t}}$

Given value:

$t= 50\\v= 856\\v_0= 324$

Calculating the acceleration:

$\to a = \frac{(856 - 324)}{50}\\\\$

$= \frac{(532)}{50}\\\\= \frac{(106.4)}{10}\\\\= 10.64 \ \ \frac{ m}{s^2}$

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3 years ago

A spool of thread, free to unwind, is on a horizontal surface (with friction) and pulled directly upward (+y) at all times. The

k0ka [10]

Answer:

The Correct Answer is "D"

Explanation:

For Detail of this answer Please see the attached file.

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2 years ago