Answer:
<h3><em><u>Magnesium has an atomic number of 12, which means its neutral atom has 12 electrons. The Mg2+ ion is formed when the neutral magnesium atom loses 2 electrons, which brings its total number of electrons to 10</u></em></h3>
Answer:
mass= 60kg
velocity= 10m/s
momentum = mass × velocity
p=m×v
p= 60×10
p= 600kgm/s
Answer:
Take the measurement of the distance (d) with a meter rule (in meters) and also measure the time (t) of the travel in seconds with a stopwatch.
question: What is the speed of the cart?
Explanation:
The speed of an object in motion is the distance covered by the object with respect to time, that is, the ratio of distance covered to the time taken to reach that distance.
Speed = distance / time
= d (in meters m) / t (in seconds s) = m/s
The greater the cross sectional area of the condoctor<span>, the greater the number of electrons that move and contribute to the current. Having a larger current for the same </span><span>voltage means having a larger conductance. Since </span>resistance<span> is the </span>inverse<span> of conductance, </span>cross sectional area<span> is </span>inversely related<span> to the </span>resistance<span>.</span>
Some of the forms of energy are: heat energy, mechanical energy, gravitational energy, electrical energy, sound energy, chemical energy, nuclear or atomic energy <span>and so on. Some examples of this are:
</span>Heat energy: the sun in our solar system. Mechanical energy: a moving car. Gravitational energy: a pen being held above a table. Electrical energy: lightning. Sound energy: musical Instruments. Chemical energy: batteries. Nuclear or atomic energy: the fusion reaction in the sun.
