2 years ago

Rusting metal is an example of a _________ change. A) phase B) state C) chemical D) physical

Physics

2 answers:

elena55 [62]2 years ago

8 0

Answer:

chemical

Explanation:

chemical change

sergeinik [125]2 years ago

6 0

Answer:

C. Chemical Change

Explanation:

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Blababa [14]

The speed of the car is 60 m/s

Explanation:

The speed of an object is a scalar quantity telling "how fast" the object is moving, regardless of its direction. It can be calculated as follows:

$speed=\frac{d}{t}$

where

d is the distance covered

t is the time taken

For the car in this problem, we have

$d=108 km =1.08\cdot 10^5 m$ is the distance covered

$t=30 min \cdot 60 =1800 s$ is the time taken

Subsituting into the equation, we find the speed:

$speed=\frac{1.08\cdot 10^5}{1800}=60 m/s$

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boyakko [2]

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A stationary 90 kg baseball pitcher throws a 0.15 kg baseball forward

Marina CMI [18]

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given that the baseball pitcher is at stationary position, his velocity will be equal to zero. If velocity is zero, his linear momentum will therefore equal to zero.

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