Answer:
earth's shadow covering the moon,thats lunar eclipse
I would assume that the magnesium would have to come into contact with an ion in order to become a magnesium ion.
Density =mass/Volume
0.8=mass/60
Mass=0.8*60
Mass=48g
Their relative speed is the sum of 60 and 40 or 100km/hr. They will travel the 150km in 1.5 hrs. When two object approach each other, the closing speed is just the sum of the speeds, therefore, the closing speed is your case is 100kph. So they will meet in 1.5 hours.
Answer:
The number of complete vibration or wave made in
one second is called frequency.
