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omeli [17]
3 years ago
9

2. A child on a toboggan sits at rest on the top of a tobogganing hill. If the child travels

Physics
1 answer:
Alenkasestr [34]3 years ago
5 0

kalakalallalalakalakakkakakakakakakakkakakakakkakakakakjdjshsjsbdbd

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A nylon guitar string is fixed between two lab posts 2.00 m apart. The string has a linear mass density of μ=7.20 g/m\mu=7.20~\t
vladimir2022 [97]

Answer:

4.6 m

Explanation:

First of all, we can find the frequency of the wave in the string with the formula:

f=\frac{1}{2L}\sqrt{\frac{T}{\mu}}

where we have

L = 2.00 m is the length of the string

T = 160.00 N is the tension

\mu =7.20 g/m = 0.0072 kg/m is the mass linear density

Solving the equation,

f=\frac{1}{2(2.00 m)}\sqrt{\frac{160.00 N}{0.0072 kg/m}}=37.3 Hz

The frequency of the wave in the string is transmitted into the tube, which oscillates resonating at same frequency.

The n=1 mode (fundamental frequency) of an open-open tube is given by

f=\frac{v}{2L}

where

v = 343 m/s is the speed of sound

Using f = 37.3 Hz and re-arranging the equation, we find L, the length of the tube:

L=\frac{v}{2f}=\frac{343 m/s}{2(37.3 Hz)}=4.6 m

4 0
4 years ago
Are active centers of galaxies that radiate powerful x-rays visible across the universe
ira [324]

Answer:

no

Explanation:

5 0
3 years ago
A flea may live on the skin of a dog and feed on the dog's blood. This relationship between the flea and the dog is an example o
AlexFokin [52]
I think it might be a Parasite
8 0
3 years ago
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A 1,383 kg purple car is driving southbound on a road and collides with a 1,827 kg orange car, that was traveling 31.87 m/s east
user100 [1]

Answer:

Explanation:

We shall apply work energy theorem to calculate the initial velocity just after the collision .

Their kinetic energy will be equal to work done by friction .

force of friction = μ mg , where μ is coefficient of friction , m is total mass and g is acceleration due to gravity

force = .463 x 3210 x 9.8

= 14565.05 N

work done = force x displacement

= 14565.05 x 14.54 = 211775.88 J

now applying work energy theorem

1/2 m v² = 211775.88 , m is composite mass , v is velocity just after the collision

.5 x 3210 x v² = 211775.88

v² = 131.94

v  11.48 m /s

3 0
3 years ago
PLZ HELP ASAP! TYSM! I WILL AWARD BRAINLIEST!
Taya2010 [7]

Answer:

im not smart enough, all i figured out is the track is going 1.2 miles every minute

Explanation:

7 0
3 years ago
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