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3 years ago

What can I do to stay positive from bad things like commits?

Physics

1 answer:

____ [38]3 years ago

4 0

Answer:

u can listen to good music that makes u happy

ignore them and dont talk to them. engage it makes things worse

u can smile, and follow ur passion and do something u love

always put out kindness even when people are being meen

Explanation:

have a great day and remember to never give up on hope it will come one way or another, sooner or later :) :) :) :) :) :)

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A tuning fork is held over a resonance tube, and resonance occurs when the surface of the water is 12 cm below the top of the tu

Rainbow [258]

Answer:

786 Hz

Explanation:

Recall, the speed of sound is

v = 332 + 0.6t

Where t = 23°

v = 332 + 0.6(23)

v = 332 + 13.8

v = 345.8 m

Also, it is known that distance between two consecutive resonance length is half of the wavelength.

L2 - L1 = λ/2

34 - 12 = λ/2

λ/2 = 22

λ = 44 cm

Finally, remember that also

Frequency = speed/ wavelength

Frequency = 345.8/0.4

Frequency = 786 Hz

Therefore, the frequency of the tuning fork is 786 Hz

6 0

3 years ago

In which state of matter are the particles closest together?

vovikov84 [41]

Answer: The particles of a solid are [generally] closest together while those of a gas are farthest apart

Explanation:

6 0

3 years ago

A golfer takes two putts to get his ball into the hole he is on green. The first putt displaces the ball 4.5m east, and the seco

LenaWriter [7]

I think its the one going it at 4.5m

8 0

4 years ago

It’s your birthday, and to celebrate you’re going to make your first bungee jump. You stand on a bridge 100 m above a raging riv

amm1812

Answer:

$X'=50.4\,m$

Explanation:

Given that:

Height of jump, $h=100\,m$

length of elastic cord, $l=30\,m$

spring constant of the cord, $k=40\,N.m^{-1}$

mass of the body that jumps, $m=80\,kg$

Force on the bungee elastic cord:

$F=m.g$

$F=80\times 9.8$

Now this force F will be responsible for the elongation in the elastic cord, so:

$F=k.x$ ............................(1)

where :

k = spring constant

x = extension in the elastic cord

using eq. (1)

$80\times 9.8=40\times x$

$x=19.6\,m$

So the cord stretches 19.6 meters more beyond its original length of 30 meters.

Hence, the remaining distance from the river surface at the bottom is:

$X'=100-(30+19.6)$

$X'=50.4\,m$

3 0

3 years ago

A 25-turn circular coil of wire has diameter 1.00 m. It is placed with its axis along the direction of the Earth’s magnetic fiel

slava [35]

Answer:

The magnitude of average emf is 9.813 mV.

Explanation:

Given that,

Number of turns = 25 turns

Diameter = 1.00 m

Magnetic field = 50.0μm

Time = 0.200 s

Angle = 180°

We need to calculate the area of the coil

Using formula of area

$A=\pr r^2$

$A=\pi\times(\dfrac{1.00}{2})^2$

$A=0.785\ m^2$

We need to calculate the average emf

Using formula of emf

$E=NAB\cos\theta$

$E=NA(\dfrac{B\cos0^{\circ}-B\cos180^{\circ}}{dt}$

$E=\dfrac{2NA}{dt}$

Where, N = number of turns

A = Area

B = magnetic field

Put the value into the formula

$E=\dfrac{2\times25\times0.785\times50.0\times10^{-6}}{0.200}$

$E=9.813\ mV$

Hence, The magnitude of average emf is 9.813 mV.

3 0

4 years ago