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2 years ago

Help me plzzzzzz! Can someone help me with number 4 Idon’t get it

Physics

2 answers:

ryzh [129]2 years ago

6 0

Pollution of the spheres has impacted is the answer I think

andrew11 [14]2 years ago

5 0

I can only think of one at the moment but I would say that pollution and greenhouse gases have impacted out atmosphere. You could mention cars and factories. You could also say that oil spills and trash have impacted the hydrosphere.

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Which statements describe the image produced by a concave lens?check all that apply.

kotegsom [21]

Answer:

The answers are:

A-which is the image is always right side up.

E-the image is virtual

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3 years ago

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You toss a ball in the air. what is the work done by gravity as the ball goes up?

jolli1 [7]

Answer: Gravity slows the ball down as it goes up and eventually stops it from going up and starts to pull it back down to earth.

Explanation:

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2 years ago

What is the frequency of sound waves whose wavelength is 0.25 m on a day when the air temperature is 25 degree Celsius? Group of

Dvinal [7]

Answer:1384 Hz

Explanation:

Given

wavelength $(\lambda )$ =0.25 m

Temperature T $=25^{\circ}$

at $T=25^{\circ}$ velocity of sound is 346 m/s

and we know

$velocity=frequency\times \lambda$

$v=f\times \lambda$

$346=f\times 0.25$

f=1384 Hz

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2 years ago

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The ability of water molecules to form hydrogen bonds with other water molecules and water's ability to dissolve substances that

Arlecino [84]

Answer:

The ability of water molecules to form hydrogen bonds with other water molecules and water's ability to dissolve substances that have charges or partial charges are due to water's partial charges.

Explanation:

The partial negative charge on oxygen and partial positive charge on hydrogen enables them to make hydrogen bond and also makes it to dissolve the the other substances having partial charges.

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2 years ago

A model rocket is launched directly upward at a speed of 16 meters per second from a height of 2 meters. The function f(t)=−4.9t

Crank

Answer:

$Hmax=15.06$ meters