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4 years ago

What would happen to life on earth if all the plants died? plz help

Physics

2 answers:

DaniilM [7]4 years ago

8 0

Answer:

If all the plants on earth died,, then we would have no oxygen and all life would die too :(

Explanation:

mooooo :(

denis-greek [22]4 years ago

4 0

Answer:

we would have no oxygen and barely any water.

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What do you need to know to describe velocity?

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Is the speed given with a direction

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The uses of fossil fuel causes:

All of the above

Fossil fuels burn and increases in global temperature because it emits greenhouse gases. And the extreme climate change decreases biodiversity and last but not the least it increases pollution because burning of fuels emit gases like Carbon-dioxide etc...~

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An artillery shell is launched on a flat, horizontal field at an angle of α = 31.7° with respect to the horizontal and with an i

kompoz [17]

Answer:193.90 m/s

Explanation:

Given

launch angle $\theta =31.7^{\circ}$

launch velocity $v_0=202 m/s$

Horizontal velocity of the shell after $t=18.96 s$

time of flight of Projectile $T=\frac{2u\sin \theta }{g}$

$T={\frac2\times 202\sin 31.7}{9.8}$

$T=21.66 s$

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3 years ago

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A police car parked on the side of the highway emits a 1200 Hz sound that bounces off a vehicle farther down the highway and ret

emmasim [6.3K]

f' = frequency observed by the police car after sound reflected from the vehicle and comes back to police car = 1250 Hz

f = frequency emitted by the police car = 1200 Hz

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v = speed of vehicle = ?

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f' = f (V + v)/(V - v)

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4 years ago

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Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y

AnnyKZ [126]

The wavelength of the interfering waves is 3.14 m.

<h3>Calculation:</h3>

The general equation of a standing wave is given by:

y = 2A sin (kx) cos (ωt) ......(1)

The given equation represents the standing wave produced by the interference of two harmonic waves:

y = 3 sin (2x) cos 5t .......(2)

Comparing equations (1) and (2):

k = 2

We know that,

k = 2π/λ

λ = 2π/k

λ = 2 (3.14)/ 2

λ = 3.14 m

Therefore, the wavelength of the interfering waves is 3.14 m.

I understand the question you are looking for is this:

Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y = 3 sin (2x) cos 5t where x is in m and t is in s. What is the wavelength of the interfering waves?

Learn more about interfering waves here:

brainly.com/question/2910205

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2 years ago