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3 years ago

Ninas measurements shown in the table here BEST represent a wave with

Physics

2 answers:

krok68 [10]3 years ago

4 0

it will decrease the frequency. Because the wavelength increases

Finger [1]3 years ago

3 0

They best represent a wave with zero energy and zero amplitude.

There are no measurements shown in a table that accompanies
this question having any amplitude or energy greater than zero.

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When are zeros significant when found to the trailing (to the right) of the decimal point?

Lelechka [254]

Answer:

Usually, zeroes are found to the right of a decimal point in significant numbers if you have something like $7\frac{1}{100000000000000000000000000}$ (exaggerated example of course), which is when you have a number that is very very close to the integer before it, but isn't that integer.

7 0

3 years ago

Explain how the gas laws apply to the act of breathing. Describe the changes that occur in each step of the process in terms of

MrRa [10]

<span>When you in inhale, you move your diaphragm down increasing the volume of the cavity in your ribs (its called pleural cavity). This lowers the pressure inside your lungs. When the pressure in your lungs is less than the atmospheric pressure, air draws inwards. Ideal gas law: PV=nRT -> assume nRT are constant for our purposes. then we allow one system to be equal to the same system at different conditions, thus: P1V1=P2V2 (Boyles Law) assume P1=1 atm and V1=1 L (keeping the numbers simple to avoid confusion). when the V is increased (for example say doubled) V2=2 L, then: (1 atm)*(1 L)=P2*(2 L) -> P2=0.5 atm The pressure was decreased. Apply the same logic for exhalation.</span>

4 0

3 years ago

A Sound wave has a frequency of 192 HZ and travels across a football field (91.4m) in 2 seconds. what is the wavelength of the s

igor_vitrenko [27]

The wavelength of the sound wave is 0.24 m

Explanation:

First of all, we calculate the speed of the wave, which is the ratio between the distance covered by the wave and the time taken:

$v=\frac{d}{t}$

where, for the wave in this problem

d = 91.4 m

t = 2 s

Substituting,

$v=\frac{91.4}{2}=45.7 m/s$

Now we can find the wavelength of the wave by using the wave equation:

$v=f \lambda$

where

v is the speed of the wave

f is its frequency

$\lambda$ is the wavelength

For the wave here,

f = 192 Hz

v = 45.7 m/s

Solving for the wavelength,

$\lambda = \frac{v}{f}=\frac{45.7}{192}=0.24 m$

Learn more about waves:

brainly.com/question/5354733

brainly.com/question/9077368

#LearnwithBrainly

3 0

3 years ago

Jack is playing with a Newton's cradle. As he lifts one ball to position A and drops it, it impacts the other balls at position

Volgvan

Answer: D

Explanation:

Because the energy from the first ball immediately impacts the other balls.

5 0

3 years ago

An aluminum cup of mass 150 g contains 800 g of water in thermal equilibrium at 80.0°C. The combination of cup and water is cool

gladu [14]

Answer:

Heat Flow Rate : ( About ) 87 W

Explanation:

The heat flowing out of the system each minute, will be represented by the following equation,

Q( cup ) + Q( water ) = m( cup ) $*$ c( al ) $*$ ΔT + m( w ) $*$ c( w ) $*$ ΔT

So as you can see, the mass of the aluminum cup is 150 grams. For convenience, let us convert that into kilograms,

150 grams = .15 kilograms - respectively let us convert the mass of water to kilograms,

800 grams = .8 kilograms

Now remember that the specific heat of aluminum is 900 J / kg $*$ K, and the specific heat of water = 4186 J / kg $*$ K. Therefore let us solve for " the heat flowing out of the system per minute, "

Q( cup ) + Q( water ) = .15 $*$ ( 900 J / kg $*$ K ) $*$ 1.5 + .8 $*$ ( 4186 J / kg $*$ K ) $*$ 1.5,

Q( cup ) + Q( water ) = 5225.7 Joules

And the heat flow rate should be Joules per minute,

5225.7 Joules / 60 seconds = ( About ) 87 W

5 0

3 years ago