1670 km/h; 40 200 km/day
<em>a) Velocity in kilometers per hour</em>
The conversion factors are 1 km/1000 m, 60 s/1 min, and 60 min/1 h.
We can string these together to get
Velocity = (465 m/1 s) x (1 km/1000 m) x (60s/1min) x (60 min/1 h)
= 1674 km/h
= 1670 km/h (three significant figures)
<em>b) Velocity in kilometers per day
</em>
The conversion factor is 24 h/1 day.
Velocity = (1674 km/1 h) x (24 h/1 day) = 40 200 km/day
still need help with this?
Answer:
the third one i do belive
Explanation:
Lets do process of elimination!
A. Breaking glass - That is a psychical change because if you break it, it is still glass. It didn't change to another substance.
B. Melting ice on a windshield - During the melting process, there is no chemical change, and therefore, no new substance is created.
C. Burning gasoline - When gas burns it usually combines with oxygen to give carbon dioxide, water etc. It is a chemical change.
D. Denting a bumper - The bumper is still a bumper, only thing is it has a dent in it. The properties did not change, meaning no chemical change.
Answer:
A... According to the periodic table, elements with one electron at the outermost shell or orbital are classified as alkali METALS