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lawyer [7]
2 years ago
15

Different substances have different physical properties meaning they have properties that can be observed when a substance under

goes a
chemical change.
For example, Rust v forms when water and oxygen interact with certain metals.
Physics
2 answers:
Ann [662]2 years ago
8 0

Explanation:

physical properties are those get can measured and observed without bringing a chemical change chemical properties are those that that get observed and measured when the substance undergoes a chemical change

BaLLatris [955]2 years ago
5 0
Yea, when water interacts with oxygen the process is called oxidation
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A ball is thrown into the air with an upward velocity of 20 feet per second. Its height, h, in feet after t seconds is given by
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3 years ago
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navik [9.2K]
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3 0
2 years ago
a driver travels 135 km, east in 1.5 h, stops for 45 minutes for lunch, and then resumes driving for the next 2.0 h through a di
daser333 [38]

Answer:

v = 98.75 km/h

Explanation:

Given,

The distance driver travels towards the east, d₁ = 135 km

The time period of the travel, t₁ = 1.5 h

The halting time, tₓ = 46 minutes

The distance driver travels towards the east, d₂ = 215 km

The time period of the travel, t₁ = 2 h

The average speed of the vehicle before stopping

                                    v₁ = d₁/t₁

                                        = 135/1.5

                                       = 90 km/h

The average speed of vehicle after stopping

                                    v₂ = d₂/t₂

                                         = 215/2

                                        = 107.5 km/h

The total average velocity of the driver

                                      v = (v₁ +v₂) /2

                                         = (90 + 107.5)/2

                                         = 98.75 km/h

Hence, the average velocity of the driver, v = 98.75 km/h

7 0
3 years ago
Beginning<br> lonic compounds are made up of a__<br> and a__
Romashka-Z-Leto [24]

Answer:

metal and non-metal

Explanation:

Ionic bonds are formed when a metal loses electrons and a non-metal gains said electrons.

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3 years ago
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