2 years ago

By increasing the temperature, the solubility of _____.

Physics

2 answers:

kati45 [8]2 years ago

5 0

The answer is A my man

svetoff [14.1K]2 years ago

3 0

The answer is A - when liquid is heated it evaporates (Decreases) and the vapor (Gas) increases.

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Name two ways that friction is harmful and two ways that friction is helpful to you when riding a bicycle

lawyer [7]

Harmful

-causes heat; if it's not used correctly, it can cause injury
-when falling, the friction between your knee/leg and the ground can cause scrapes

Helpful

-helps stop the bike, the brakes rub against the tire which slows it down to a stop
-it can also help move the bike; the chains rub against tires which accelerate the bike

6 0

2 years ago

If a marathon runner averages 9.51 mi/hr, how long does it take him to run a 26.220-mile marathon. Express your answers in hours

ASHA 777 [7]

Explanation:

Speed of the marathon runner, v = 9.51 mi/hr

Distance covered by the runner, d = 26.220 mile

Let t is the time taken by the marathon runner. We know that the speed of the runner is given by total distance divided by total time taken. Mathematically, it is given by :

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