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3 years ago

What is common between transverse waves and longitudinal waves?

Physics

2 answers:

rjkz [21]3 years ago

7 0

Answer:

Explanation:

i took the quiz

balandron [24]3 years ago

3 0

Answer:

Explanation:

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Which object has the least amount of kinetic energy? a car driving down a road a soccer ball rolling down a hill a bicycle locke

mars1129 [50]

a bicycle locked to a bike rack im pretty sure

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3 years ago

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The water behind Grand Coulee Dam is 1000 m wide and 200 m deep. Find the hydrostatic force on the back of the dam. (Hint: the t

Vika [28.1K]

Answer:

The hydro static force on the back of the dam is $1.96\times10^{11}\ N$

Explanation:

Given that,

Width b= 1000 m

Depth d= 200 m

We need to calculate the average pressure

Using formula of average pressure

$P_{avg}=\rho\times g\times d_{avg}$

Put the value into the formula

$P_{avg}=1000\times9.8\times100$

$P_{avg}=980000\ Pa$

We need to calculate the hydro static force on the back of the dam

Using formula of force

$F = P_{avg}\times A$

Put the value into the formula

$F = 980000\times1000\times200$

$F=1.96\times10^{11}\ N$

Hence, The hydro static force on the back of the dam is $1.96\times10^{11}\ N$

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3 years ago

Which material is the MOST dense? A. lead B. brick C. copper D. platinum

Murljashka [212]

I think platinum is most dense

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4 years ago

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What is a diffraction grating? What is a diffraction grating? A device used to grate cheese and other materials A musical instru

hammer [34]

Answer:

An opaque object with many closely spaced slits

Explanation:

Diffraction grating is an opaque object which will have many close slits on it

Each slit will allow the light wave pass through it which incident on it.

So here each slit will behave like a secondary source which will transmit the light and the superposition of light is then observed on the screen

These large number of slits on the object is combined known as diffraction grating.

By the superposition of waves due to grating we will have pattern of maximum and minimum intensity on the screen and this intensity if highest at the mid point of screen and then decreases as we move away

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3 years ago

A certain airplane has a speed of 290.0 km/h and is diving at an angle of 0 : 30.0" below the horizontal when the pilot releases

prisoha [69]

Answer:

10.03 s is the time the decoy is in the air

Explanation:

From the information given we know:

$\theta_{0}=-30$ because is measured clockwise from horizontal.

The initial speed of the decoy is the plane's speed at the moment of release $v_{0}=290 \:\frac{km}{h}$

We will need to work in meters and m/s, so $290 \:\frac{km}{h} \cdot \frac{1000 \:m}{km} \cdot \frac{1\:h}{3600\:s} = 80.56 \:\frac{m}{s}$

The horizontal motion of a projectile is given by:

$x-x_{0}=v_{0x}\cdot t$

because $v_{0x}=v_0cos(\theta_{0})$ , this becomes

$x-x_{0}=(v_0cos(\theta_{0}))\cdot t$

We have that $\Delta x= 700\:m$ , solving for t, we have

$t=\frac{\Delta x}{v_{0}cos\theta_{0}} \\t=\frac{700 \:m}{(80.56 \:\frac{m}{s} )\cdot cos(-30)} \\t= 10.03 \:s$

5 0

3 years ago