Average velocity is a vector unit (i.e. includes magnitude <em>and </em>direction) calculated by working out distance ÷ time:
80 metres ÷ 20 seconds = 4 metres/seconds (m/s)
Therefore, your final answer is C. 4 m/s south.
Energy can only be converted from one form to another
eg kinetic energy is converted to heat energy
Answer:
The toy car
Explanation:
the real car is parked so yeah but maybe in some way technically the real car has more "momentum"
From the balanced reaction, we are given that 1418 kJ of
heat is released for every 2 moles of nitromethane (CH3NO2) reacted.
So first calculate the moles of CH3NO2:
moles CH3NO2 = 5560 g / (61.04 g/mol)
moles CH3NO2 = 91.1 mol
So total heat released is:
total heat = (-1418 kJ / 2mol) * 91.1 mol
<span>total heat = -129,162.52 kJ = -129.16 MJ</span>
They have the same number of electrons in their outermost shell
Explanation:
Lithium, sodium, potassium, rubidium, cesium and francium are in the same column on the periodic table because they have the same number of electrons in their outermost shell.
- The periodic table is based on the precepts of the modern periodic law which states that "the properties of elements are a periodic function of their atomic number".
- In the table elements having the same number of electrons in the outermost shell of their atoms are placed over one another in vertical columns.
- Each of the resulting vertical column is known as a group or family.
- The given elements belongs to the first family on the periodic table.
- In this group, all the elements have just one electron in their outermost shell.
learn more:
Periodic table brainly.com/question/5090516
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