2 years ago

I need help quick!! Urgent!

Physics

1 answer:

faltersainse [42]2 years ago

6 0

Explanation: Because mirrors are lighter, and they are easier than lenses to make perfectly smooth.

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_____ is a chemical property of matter.

german

Answer:

it is chemical reactivity (D)

Explanation:

it is because chemical properties are properties that can be measured and observed only when matter undergoes a change to become an entirely different kind of matter.Which they include Chemical reactivity,flammable,and the ability to rust.And Chemical reactivity is the ability of matter to react chemically with other substances.

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3 years ago

How far will an object move in 6 seconds if its average speed during that time is 45 m/s

babunello [35]

Answer:

270 Meters

Explanation:

45×6=270

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3 years ago

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If the pressure exerted on a 300.0 mL sample of hydrogen gas at constant temperature is increased from 0.500 kPa to 0.750 kPa, w

uranmaximum [27]

Answer:

200 mL

Explanation:

Given that,

Initial volume, V₁ = 300 mL

Initial pressure, P₁ = 0.5 kPa

Final pressure, P₂ = 0.75 kPa

We need to find the final volume of the sample if pressure is increased at constant temperature. It is based on Boyle's law. Its mathematical form is given by :

$V\propto \dfrac{1}{P}\\\\P_1V_1=P_2V_2$